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/wp-includes/ -> post.php (source)

   1  <?php
   2  /**
   3   * Core Post API
   4   *
   5   * @package WordPress
   6   * @subpackage Post
   7   */
   8  
   9  //
  10  // Post Type registration.
  11  //
  12  
  13  /**
  14   * Creates the initial post types when 'init' action is fired.
  15   *
  16   * See {@see 'init'}.
  17   *
  18   * @since 2.9.0
  19   */
  20  function create_initial_post_types() {
  21      WP_Post_Type::reset_default_labels();
  22  
  23      register_post_type(
  24          'post',
  25          array(
  26              'labels'                => array(
  27                  'name_admin_bar' => _x( 'Post', 'add new from admin bar' ),
  28              ),
  29              'public'                => true,
  30              'randomable'            => true,
  31              '_builtin'              => true, /* internal use only. don't use this when registering your own post type. */
  32              '_edit_link'            => 'post.php?post=%d', /* internal use only. don't use this when registering your own post type. */
  33              'capability_type'       => 'post',
  34              'map_meta_cap'          => true,
  35              'menu_position'         => 5,
  36              'menu_icon'             => 'dashicons-admin-post',
  37              'hierarchical'          => false,
  38              'rewrite'               => false,
  39              'query_var'             => false,
  40              'delete_with_user'      => true,
  41              'supports'              => array(
  42                  'title',
  43                  'editor' => array( 'notes' => true ),
  44                  'author',
  45                  'thumbnail',
  46                  'excerpt',
  47                  'trackbacks',
  48                  'custom-fields',
  49                  'comments',
  50                  'revisions',
  51                  'post-formats',
  52              ),
  53              'show_in_rest'          => true,
  54              'show_in_abilities'     => true,
  55              'rest_base'             => 'posts',
  56              'rest_controller_class' => 'WP_REST_Posts_Controller',
  57          )
  58      );
  59  
  60      register_post_type(
  61          'page',
  62          array(
  63              'labels'                => array(
  64                  'name_admin_bar' => _x( 'Page', 'add new from admin bar' ),
  65              ),
  66              'public'                => true,
  67              'publicly_queryable'    => false,
  68              'randomable'            => false,
  69              '_builtin'              => true, /* internal use only. don't use this when registering your own post type. */
  70              '_edit_link'            => 'post.php?post=%d', /* internal use only. don't use this when registering your own post type. */
  71              'capability_type'       => 'page',
  72              'map_meta_cap'          => true,
  73              'menu_position'         => 20,
  74              'menu_icon'             => 'dashicons-admin-page',
  75              'hierarchical'          => true,
  76              'rewrite'               => false,
  77              'query_var'             => false,
  78              'delete_with_user'      => true,
  79              'supports'              => array(
  80                  'title',
  81                  'editor' => array( 'notes' => true ),
  82                  'author',
  83                  'thumbnail',
  84                  'page-attributes',
  85                  'custom-fields',
  86                  'comments',
  87                  'revisions',
  88              ),
  89              'show_in_rest'          => true,
  90              'show_in_abilities'     => true,
  91              'rest_base'             => 'pages',
  92              'rest_controller_class' => 'WP_REST_Posts_Controller',
  93          )
  94      );
  95  
  96      register_post_type(
  97          'attachment',
  98          array(
  99              'labels'                => array(
 100                  'name'           => _x( 'Media', 'post type general name' ),
 101                  'name_admin_bar' => _x( 'Media', 'add new from admin bar' ),
 102                  'add_new'        => __( 'Add Media File' ),
 103                  'add_new_item'   => __( 'Add Media File' ),
 104                  'edit_item'      => __( 'Edit Media' ),
 105                  'view_item'      => ( '1' === get_option( 'wp_attachment_pages_enabled' ) ) ? __( 'View Attachment Page' ) : __( 'View Media File' ),
 106                  'attributes'     => __( 'Attachment Attributes' ),
 107              ),
 108              'public'                => true,
 109              'randomable'            => false,
 110              'show_ui'               => true,
 111              '_builtin'              => true, /* internal use only. don't use this when registering your own post type. */
 112              '_edit_link'            => 'post.php?post=%d', /* internal use only. don't use this when registering your own post type. */
 113              'capability_type'       => 'post',
 114              'capabilities'          => array(
 115                  'create_posts' => 'upload_files',
 116              ),
 117              'map_meta_cap'          => true,
 118              'menu_icon'             => 'dashicons-admin-media',
 119              'hierarchical'          => false,
 120              'rewrite'               => false,
 121              'query_var'             => false,
 122              'show_in_nav_menus'     => false,
 123              'delete_with_user'      => true,
 124              'supports'              => array( 'title', 'author', 'comments' ),
 125              'show_in_rest'          => true,
 126              'rest_base'             => 'media',
 127              'rest_controller_class' => 'WP_REST_Attachments_Controller',
 128          )
 129      );
 130      add_post_type_support( 'attachment:audio', 'thumbnail' );
 131      add_post_type_support( 'attachment:video', 'thumbnail' );
 132  
 133      register_post_type(
 134          'revision',
 135          array(
 136              'labels'           => array(
 137                  'name'          => __( 'Revisions' ),
 138                  'singular_name' => __( 'Revision' ),
 139              ),
 140              'public'           => false,
 141              '_builtin'         => true, /* internal use only. don't use this when registering your own post type. */
 142              '_edit_link'       => 'revision.php?revision=%d', /* internal use only. don't use this when registering your own post type. */
 143              'capability_type'  => 'post',
 144              'map_meta_cap'     => true,
 145              'hierarchical'     => false,
 146              'rewrite'          => false,
 147              'query_var'        => false,
 148              'can_export'       => false,
 149              'delete_with_user' => true,
 150              'supports'         => array( 'author' ),
 151          )
 152      );
 153  
 154      register_post_type(
 155          'nav_menu_item',
 156          array(
 157              'labels'                => array(
 158                  'name'          => __( 'Navigation Menu Items' ),
 159                  'singular_name' => __( 'Navigation Menu Item' ),
 160              ),
 161              'public'                => false,
 162              '_builtin'              => true, /* internal use only. don't use this when registering your own post type. */
 163              'hierarchical'          => false,
 164              'rewrite'               => false,
 165              'delete_with_user'      => false,
 166              'query_var'             => false,
 167              'map_meta_cap'          => true,
 168              'capability_type'       => array( 'edit_theme_options', 'edit_theme_options' ),
 169              'capabilities'          => array(
 170                  // Meta Capabilities.
 171                  'edit_post'              => 'edit_post',
 172                  'read_post'              => 'read_post',
 173                  'delete_post'            => 'delete_post',
 174                  // Primitive Capabilities.
 175                  'edit_posts'             => 'edit_theme_options',
 176                  'edit_others_posts'      => 'edit_theme_options',
 177                  'delete_posts'           => 'edit_theme_options',
 178                  'publish_posts'          => 'edit_theme_options',
 179                  'read_private_posts'     => 'edit_theme_options',
 180                  'read'                   => 'read',
 181                  'delete_private_posts'   => 'edit_theme_options',
 182                  'delete_published_posts' => 'edit_theme_options',
 183                  'delete_others_posts'    => 'edit_theme_options',
 184                  'edit_private_posts'     => 'edit_theme_options',
 185                  'edit_published_posts'   => 'edit_theme_options',
 186              ),
 187              'show_in_rest'          => true,
 188              'rest_base'             => 'menu-items',
 189              'rest_controller_class' => 'WP_REST_Menu_Items_Controller',
 190          )
 191      );
 192  
 193      register_post_type(
 194          'custom_css',
 195          array(
 196              'labels'           => array(
 197                  'name'          => __( 'Custom CSS' ),
 198                  'singular_name' => __( 'Custom CSS' ),
 199              ),
 200              'public'           => false,
 201              'hierarchical'     => false,
 202              'rewrite'          => false,
 203              'query_var'        => false,
 204              'delete_with_user' => false,
 205              'can_export'       => true,
 206              '_builtin'         => true, /* internal use only. don't use this when registering your own post type. */
 207              'supports'         => array( 'title', 'revisions' ),
 208              'capabilities'     => array(
 209                  'delete_posts'           => 'edit_theme_options',
 210                  'delete_post'            => 'edit_theme_options',
 211                  'delete_published_posts' => 'edit_theme_options',
 212                  'delete_private_posts'   => 'edit_theme_options',
 213                  'delete_others_posts'    => 'edit_theme_options',
 214                  'edit_post'              => 'edit_css',
 215                  'edit_posts'             => 'edit_css',
 216                  'edit_others_posts'      => 'edit_css',
 217                  'edit_published_posts'   => 'edit_css',
 218                  'read_post'              => 'read',
 219                  'read_private_posts'     => 'read',
 220                  'publish_posts'          => 'edit_theme_options',
 221              ),
 222          )
 223      );
 224  
 225      register_post_type(
 226          'customize_changeset',
 227          array(
 228              'labels'           => array(
 229                  'name'               => _x( 'Changesets', 'post type general name' ),
 230                  'singular_name'      => _x( 'Changeset', 'post type singular name' ),
 231                  'add_new'            => __( 'Add Changeset' ),
 232                  'add_new_item'       => __( 'Add Changeset' ),
 233                  'new_item'           => __( 'New Changeset' ),
 234                  'edit_item'          => __( 'Edit Changeset' ),
 235                  'view_item'          => __( 'View Changeset' ),
 236                  'all_items'          => __( 'All Changesets' ),
 237                  'search_items'       => __( 'Search Changesets' ),
 238                  'not_found'          => __( 'No changesets found.' ),
 239                  'not_found_in_trash' => __( 'No changesets found in Trash.' ),
 240              ),
 241              'public'           => false,
 242              '_builtin'         => true, /* internal use only. don't use this when registering your own post type. */
 243              'map_meta_cap'     => true,
 244              'hierarchical'     => false,
 245              'rewrite'          => false,
 246              'query_var'        => false,
 247              'can_export'       => false,
 248              'delete_with_user' => false,
 249              'supports'         => array( 'title', 'author' ),
 250              'capability_type'  => 'customize_changeset',
 251              'capabilities'     => array(
 252                  'create_posts'           => 'customize',
 253                  'delete_others_posts'    => 'customize',
 254                  'delete_post'            => 'customize',
 255                  'delete_posts'           => 'customize',
 256                  'delete_private_posts'   => 'customize',
 257                  'delete_published_posts' => 'customize',
 258                  'edit_others_posts'      => 'customize',
 259                  'edit_post'              => 'customize',
 260                  'edit_posts'             => 'customize',
 261                  'edit_private_posts'     => 'customize',
 262                  'edit_published_posts'   => 'do_not_allow',
 263                  'publish_posts'          => 'customize',
 264                  'read'                   => 'read',
 265                  'read_post'              => 'customize',
 266                  'read_private_posts'     => 'customize',
 267              ),
 268          )
 269      );
 270  
 271      register_post_type(
 272          'oembed_cache',
 273          array(
 274              'labels'           => array(
 275                  'name'          => __( 'oEmbed Responses' ),
 276                  'singular_name' => __( 'oEmbed Response' ),
 277              ),
 278              'public'           => false,
 279              'hierarchical'     => false,
 280              'rewrite'          => false,
 281              'query_var'        => false,
 282              'delete_with_user' => false,
 283              'can_export'       => false,
 284              '_builtin'         => true, /* internal use only. don't use this when registering your own post type. */
 285              'supports'         => array(),
 286          )
 287      );
 288  
 289      register_post_type(
 290          'user_request',
 291          array(
 292              'labels'           => array(
 293                  'name'          => __( 'User Requests' ),
 294                  'singular_name' => __( 'User Request' ),
 295              ),
 296              'public'           => false,
 297              '_builtin'         => true, /* internal use only. don't use this when registering your own post type. */
 298              'hierarchical'     => false,
 299              'rewrite'          => false,
 300              'query_var'        => false,
 301              'can_export'       => false,
 302              'delete_with_user' => false,
 303              'supports'         => array(),
 304          )
 305      );
 306  
 307      register_post_type(
 308          'wp_block',
 309          array(
 310              'labels'                => array(
 311                  'name'                     => _x( 'Patterns', 'post type general name' ),
 312                  'singular_name'            => _x( 'Pattern', 'post type singular name' ),
 313                  'add_new'                  => __( 'Add Pattern' ),
 314                  'add_new_item'             => __( 'Add Pattern' ),
 315                  'new_item'                 => __( 'New Pattern' ),
 316                  'edit_item'                => __( 'Edit Block Pattern' ),
 317                  'view_item'                => __( 'View Pattern' ),
 318                  'view_items'               => __( 'View Patterns' ),
 319                  'all_items'                => __( 'All Patterns' ),
 320                  'search_items'             => __( 'Search Patterns' ),
 321                  'not_found'                => __( 'No patterns found.' ),
 322                  'not_found_in_trash'       => __( 'No patterns found in Trash.' ),
 323                  'filter_items_list'        => __( 'Filter patterns list' ),
 324                  'items_list_navigation'    => __( 'Patterns list navigation' ),
 325                  'items_list'               => __( 'Patterns list' ),
 326                  'item_published'           => __( 'Pattern published.' ),
 327                  'item_published_privately' => __( 'Pattern published privately.' ),
 328                  'item_reverted_to_draft'   => __( 'Pattern reverted to draft.' ),
 329                  'item_scheduled'           => __( 'Pattern scheduled.' ),
 330                  'item_updated'             => __( 'Pattern updated.' ),
 331              ),
 332              'public'                => false,
 333              '_builtin'              => true, /* internal use only. don't use this when registering your own post type. */
 334              'show_ui'               => true,
 335              'show_in_menu'          => false,
 336              'rewrite'               => false,
 337              'show_in_rest'          => true,
 338              'rest_base'             => 'blocks',
 339              'rest_controller_class' => 'WP_REST_Blocks_Controller',
 340              'capability_type'       => 'block',
 341              'capabilities'          => array(
 342                  // You need to be able to edit posts, in order to read blocks in their raw form.
 343                  'read'                   => 'edit_posts',
 344                  // You need to be able to publish posts, in order to create blocks.
 345                  'create_posts'           => 'publish_posts',
 346                  'edit_posts'             => 'edit_posts',
 347                  'edit_published_posts'   => 'edit_published_posts',
 348                  'delete_published_posts' => 'delete_published_posts',
 349                  // Enables trashing draft posts as well.
 350                  'delete_posts'           => 'delete_posts',
 351                  'edit_others_posts'      => 'edit_others_posts',
 352                  'delete_others_posts'    => 'delete_others_posts',
 353              ),
 354              'map_meta_cap'          => true,
 355              'supports'              => array(
 356                  'title',
 357                  'excerpt',
 358                  'editor',
 359                  'revisions',
 360                  'custom-fields',
 361                  'author',
 362              ),
 363              // Keep patterns when their author is deleted, as they may be used across the site.
 364              'delete_with_user'      => false,
 365          )
 366      );
 367  
 368      $template_edit_link = 'site-editor.php?' . build_query(
 369          array(
 370              'p'      => '/%s/%s',
 371              'canvas' => 'edit',
 372          )
 373      );
 374  
 375      register_post_type(
 376          'wp_template',
 377          array(
 378              'labels'                          => array(
 379                  'name'                  => _x( 'Templates', 'post type general name' ),
 380                  'singular_name'         => _x( 'Template', 'post type singular name' ),
 381                  'add_new'               => __( 'Add Template' ),
 382                  'add_new_item'          => __( 'Add Template' ),
 383                  'new_item'              => __( 'New Template' ),
 384                  'edit_item'             => __( 'Edit Template' ),
 385                  'view_item'             => __( 'View Template' ),
 386                  'all_items'             => __( 'Templates' ),
 387                  'search_items'          => __( 'Search Templates' ),
 388                  'parent_item_colon'     => __( 'Parent Template:' ),
 389                  'not_found'             => __( 'No templates found.' ),
 390                  'not_found_in_trash'    => __( 'No templates found in Trash.' ),
 391                  'archives'              => __( 'Template archives' ),
 392                  'insert_into_item'      => __( 'Insert into template' ),
 393                  'uploaded_to_this_item' => __( 'Uploaded to this template' ),
 394                  'filter_items_list'     => __( 'Filter templates list' ),
 395                  'items_list_navigation' => __( 'Templates list navigation' ),
 396                  'items_list'            => __( 'Templates list' ),
 397                  'item_updated'          => __( 'Template updated.' ),
 398              ),
 399              'description'                     => __( 'Templates to include in your theme.' ),
 400              'public'                          => false,
 401              '_builtin'                        => true, /* internal use only. don't use this when registering your own post type. */
 402              '_edit_link'                      => $template_edit_link, /* internal use only. don't use this when registering your own post type. */
 403              'has_archive'                     => false,
 404              'show_ui'                         => false,
 405              'show_in_menu'                    => false,
 406              'show_in_rest'                    => true,
 407              'rewrite'                         => false,
 408              'rest_base'                       => 'templates',
 409              'rest_controller_class'           => 'WP_REST_Templates_Controller',
 410              'autosave_rest_controller_class'  => 'WP_REST_Template_Autosaves_Controller',
 411              'revisions_rest_controller_class' => 'WP_REST_Template_Revisions_Controller',
 412              'late_route_registration'         => true,
 413              'capability_type'                 => array( 'template', 'templates' ),
 414              'capabilities'                    => array(
 415                  'create_posts'           => 'edit_theme_options',
 416                  'delete_posts'           => 'edit_theme_options',
 417                  'delete_others_posts'    => 'edit_theme_options',
 418                  'delete_private_posts'   => 'edit_theme_options',
 419                  'delete_published_posts' => 'edit_theme_options',
 420                  'edit_posts'             => 'edit_theme_options',
 421                  'edit_others_posts'      => 'edit_theme_options',
 422                  'edit_private_posts'     => 'edit_theme_options',
 423                  'edit_published_posts'   => 'edit_theme_options',
 424                  'publish_posts'          => 'edit_theme_options',
 425                  'read'                   => 'edit_theme_options',
 426                  'read_private_posts'     => 'edit_theme_options',
 427              ),
 428              'map_meta_cap'                    => true,
 429              'supports'                        => array(
 430                  'title',
 431                  'slug',
 432                  'excerpt',
 433                  'editor',
 434                  'revisions',
 435                  'author',
 436              ),
 437          )
 438      );
 439  
 440      register_post_type(
 441          'wp_template_part',
 442          array(
 443              'labels'                          => array(
 444                  'name'                  => _x( 'Template Parts', 'post type general name' ),
 445                  'singular_name'         => _x( 'Template Part', 'post type singular name' ),
 446                  'add_new'               => __( 'Add Template Part' ),
 447                  'add_new_item'          => __( 'Add Template Part' ),
 448                  'new_item'              => __( 'New Template Part' ),
 449                  'edit_item'             => __( 'Edit Template Part' ),
 450                  'view_item'             => __( 'View Template Part' ),
 451                  'all_items'             => __( 'Template Parts' ),
 452                  'search_items'          => __( 'Search Template Parts' ),
 453                  'parent_item_colon'     => __( 'Parent Template Part:' ),
 454                  'not_found'             => __( 'No template parts found.' ),
 455                  'not_found_in_trash'    => __( 'No template parts found in Trash.' ),
 456                  'archives'              => __( 'Template part archives' ),
 457                  'insert_into_item'      => __( 'Insert into template part' ),
 458                  'uploaded_to_this_item' => __( 'Uploaded to this template part' ),
 459                  'filter_items_list'     => __( 'Filter template parts list' ),
 460                  'items_list_navigation' => __( 'Template parts list navigation' ),
 461                  'items_list'            => __( 'Template parts list' ),
 462                  'item_updated'          => __( 'Template part updated.' ),
 463              ),
 464              'description'                     => __( 'Template parts to include in your templates.' ),
 465              'public'                          => false,
 466              '_builtin'                        => true, /* internal use only. don't use this when registering your own post type. */
 467              '_edit_link'                      => $template_edit_link, /* internal use only. don't use this when registering your own post type. */
 468              'has_archive'                     => false,
 469              'show_ui'                         => false,
 470              'show_in_menu'                    => false,
 471              'show_in_rest'                    => true,
 472              'rewrite'                         => false,
 473              'rest_base'                       => 'template-parts',
 474              'rest_controller_class'           => 'WP_REST_Templates_Controller',
 475              'autosave_rest_controller_class'  => 'WP_REST_Template_Autosaves_Controller',
 476              'revisions_rest_controller_class' => 'WP_REST_Template_Revisions_Controller',
 477              'late_route_registration'         => true,
 478              'map_meta_cap'                    => true,
 479              'capabilities'                    => array(
 480                  'create_posts'           => 'edit_theme_options',
 481                  'delete_posts'           => 'edit_theme_options',
 482                  'delete_others_posts'    => 'edit_theme_options',
 483                  'delete_private_posts'   => 'edit_theme_options',
 484                  'delete_published_posts' => 'edit_theme_options',
 485                  'edit_posts'             => 'edit_theme_options',
 486                  'edit_others_posts'      => 'edit_theme_options',
 487                  'edit_private_posts'     => 'edit_theme_options',
 488                  'edit_published_posts'   => 'edit_theme_options',
 489                  'publish_posts'          => 'edit_theme_options',
 490                  'read'                   => 'edit_theme_options',
 491                  'read_private_posts'     => 'edit_theme_options',
 492              ),
 493              'supports'                        => array(
 494                  'title',
 495                  'slug',
 496                  'excerpt',
 497                  'editor',
 498                  'revisions',
 499                  'author',
 500              ),
 501          )
 502      );
 503  
 504      register_post_type(
 505          'wp_global_styles',
 506          array(
 507              'label'                           => _x( 'Global Styles', 'post type general name' ),
 508              'description'                     => __( 'Global styles to include in themes.' ),
 509              'public'                          => false,
 510              '_builtin'                        => true, /* internal use only. don't use this when registering your own post type. */
 511              '_edit_link'                      => '/site-editor.php?canvas=edit', /* internal use only. don't use this when registering your own post type. */
 512              'show_ui'                         => false,
 513              'show_in_rest'                    => true,
 514              'rewrite'                         => false,
 515              'rest_base'                       => 'global-styles',
 516              'rest_controller_class'           => 'WP_REST_Global_Styles_Controller',
 517              'revisions_rest_controller_class' => 'WP_REST_Global_Styles_Revisions_Controller',
 518              'late_route_registration'         => true,
 519              'capabilities'                    => array(
 520                  'read'                   => 'edit_posts',
 521                  'create_posts'           => 'edit_theme_options',
 522                  'edit_posts'             => 'edit_theme_options',
 523                  'edit_published_posts'   => 'edit_theme_options',
 524                  'delete_published_posts' => 'edit_theme_options',
 525                  'edit_others_posts'      => 'edit_theme_options',
 526                  'delete_others_posts'    => 'edit_theme_options',
 527              ),
 528              'map_meta_cap'                    => true,
 529              'supports'                        => array(
 530                  'title',
 531                  'editor',
 532                  'revisions',
 533              ),
 534          )
 535      );
 536      // Disable autosave endpoints for global styles.
 537      remove_post_type_support( 'wp_global_styles', 'autosave' );
 538  
 539      $navigation_post_edit_link = 'site-editor.php?' . build_query(
 540          array(
 541              'p'      => '/wp_navigation/%s',
 542              'canvas' => 'edit',
 543          )
 544      );
 545  
 546      register_post_type(
 547          'wp_navigation',
 548          array(
 549              'labels'                => array(
 550                  'name'                  => _x( 'Navigation Menus', 'post type general name' ),
 551                  'singular_name'         => _x( 'Navigation Menu', 'post type singular name' ),
 552                  'add_new'               => __( 'Add Navigation Menu' ),
 553                  'add_new_item'          => __( 'Add Navigation Menu' ),
 554                  'new_item'              => __( 'New Navigation Menu' ),
 555                  'edit_item'             => __( 'Edit Navigation Menu' ),
 556                  'view_item'             => __( 'View Navigation Menu' ),
 557                  'all_items'             => __( 'Navigation Menus' ),
 558                  'search_items'          => __( 'Search Navigation Menus' ),
 559                  'parent_item_colon'     => __( 'Parent Navigation Menu:' ),
 560                  'not_found'             => __( 'No Navigation Menu found.' ),
 561                  'not_found_in_trash'    => __( 'No Navigation Menu found in Trash.' ),
 562                  'archives'              => __( 'Navigation Menu archives' ),
 563                  'insert_into_item'      => __( 'Insert into Navigation Menu' ),
 564                  'uploaded_to_this_item' => __( 'Uploaded to this Navigation Menu' ),
 565                  'filter_items_list'     => __( 'Filter Navigation Menu list' ),
 566                  'items_list_navigation' => __( 'Navigation Menus list navigation' ),
 567                  'items_list'            => __( 'Navigation Menus list' ),
 568                  'item_updated'          => __( 'Navigation Menu updated.' ),
 569              ),
 570              'description'           => __( 'Navigation menus that can be inserted into your site.' ),
 571              'public'                => false,
 572              '_builtin'              => true, /* internal use only. don't use this when registering your own post type. */
 573              '_edit_link'            => $navigation_post_edit_link, /* internal use only. don't use this when registering your own post type. */
 574              'has_archive'           => false,
 575              'show_ui'               => true,
 576              'show_in_menu'          => false,
 577              'show_in_admin_bar'     => false,
 578              'show_in_rest'          => true,
 579              'rewrite'               => false,
 580              'map_meta_cap'          => true,
 581              'capabilities'          => array(
 582                  'edit_others_posts'      => 'edit_theme_options',
 583                  'delete_posts'           => 'edit_theme_options',
 584                  'publish_posts'          => 'edit_theme_options',
 585                  'create_posts'           => 'edit_theme_options',
 586                  'read_private_posts'     => 'edit_theme_options',
 587                  'delete_private_posts'   => 'edit_theme_options',
 588                  'delete_published_posts' => 'edit_theme_options',
 589                  'delete_others_posts'    => 'edit_theme_options',
 590                  'edit_private_posts'     => 'edit_theme_options',
 591                  'edit_published_posts'   => 'edit_theme_options',
 592                  'edit_posts'             => 'edit_theme_options',
 593              ),
 594              'rest_base'             => 'navigation',
 595              'rest_controller_class' => 'WP_REST_Posts_Controller',
 596              'supports'              => array(
 597                  'title',
 598                  'editor',
 599                  'revisions',
 600              ),
 601          )
 602      );
 603  
 604      register_post_type(
 605          'wp_font_family',
 606          array(
 607              'labels'                => array(
 608                  'name'          => __( 'Font Families' ),
 609                  'singular_name' => __( 'Font Family' ),
 610              ),
 611              'public'                => false,
 612              '_builtin'              => true, /* internal use only. don't use this when registering your own post type. */
 613              'hierarchical'          => false,
 614              'capabilities'          => array(
 615                  'read'                   => 'edit_theme_options',
 616                  'read_private_posts'     => 'edit_theme_options',
 617                  'create_posts'           => 'edit_theme_options',
 618                  'publish_posts'          => 'edit_theme_options',
 619                  'edit_posts'             => 'edit_theme_options',
 620                  'edit_others_posts'      => 'edit_theme_options',
 621                  'edit_published_posts'   => 'edit_theme_options',
 622                  'delete_posts'           => 'edit_theme_options',
 623                  'delete_others_posts'    => 'edit_theme_options',
 624                  'delete_published_posts' => 'edit_theme_options',
 625              ),
 626              'map_meta_cap'          => true,
 627              'query_var'             => false,
 628              'rewrite'               => false,
 629              'show_in_rest'          => true,
 630              'rest_base'             => 'font-families',
 631              'rest_controller_class' => 'WP_REST_Font_Families_Controller',
 632              'supports'              => array( 'title' ),
 633          )
 634      );
 635  
 636      register_post_type(
 637          'wp_font_face',
 638          array(
 639              'labels'                => array(
 640                  'name'          => __( 'Font Faces' ),
 641                  'singular_name' => __( 'Font Face' ),
 642              ),
 643              'public'                => false,
 644              '_builtin'              => true, /* internal use only. don't use this when registering your own post type. */
 645              'hierarchical'          => false,
 646              'capabilities'          => array(
 647                  'read'                   => 'edit_theme_options',
 648                  'read_private_posts'     => 'edit_theme_options',
 649                  'create_posts'           => 'edit_theme_options',
 650                  'publish_posts'          => 'edit_theme_options',
 651                  'edit_posts'             => 'edit_theme_options',
 652                  'edit_others_posts'      => 'edit_theme_options',
 653                  'edit_published_posts'   => 'edit_theme_options',
 654                  'delete_posts'           => 'edit_theme_options',
 655                  'delete_others_posts'    => 'edit_theme_options',
 656                  'delete_published_posts' => 'edit_theme_options',
 657              ),
 658              'map_meta_cap'          => true,
 659              'query_var'             => false,
 660              'rewrite'               => false,
 661              'show_in_rest'          => true,
 662              'rest_base'             => 'font-families/(?P<font_family_id>[\d]+)/font-faces',
 663              'rest_controller_class' => 'WP_REST_Font_Faces_Controller',
 664              'supports'              => array( 'title' ),
 665          )
 666      );
 667  
 668      register_post_status(
 669          'publish',
 670          array(
 671              'label'       => _x( 'Published', 'post status' ),
 672              'public'      => true,
 673              '_builtin'    => true, /* internal use only. */
 674              /* translators: %s: Number of published posts. */
 675              'label_count' => _n_noop(
 676                  'Published <span class="count">(%s)</span>',
 677                  'Published <span class="count">(%s)</span>'
 678              ),
 679          )
 680      );
 681  
 682      register_post_status(
 683          'future',
 684          array(
 685              'label'       => _x( 'Scheduled', 'post status' ),
 686              'protected'   => true,
 687              '_builtin'    => true, /* internal use only. */
 688              /* translators: %s: Number of scheduled posts. */
 689              'label_count' => _n_noop(
 690                  'Scheduled <span class="count">(%s)</span>',
 691                  'Scheduled <span class="count">(%s)</span>'
 692              ),
 693          )
 694      );
 695  
 696      register_post_status(
 697          'draft',
 698          array(
 699              'label'         => _x( 'Draft', 'post status' ),
 700              'protected'     => true,
 701              '_builtin'      => true, /* internal use only. */
 702              /* translators: %s: Number of draft posts. */
 703              'label_count'   => _n_noop(
 704                  'Draft <span class="count">(%s)</span>',
 705                  'Drafts <span class="count">(%s)</span>'
 706              ),
 707              'date_floating' => true,
 708          )
 709      );
 710  
 711      register_post_status(
 712          'pending',
 713          array(
 714              'label'         => _x( 'Pending', 'post status' ),
 715              'protected'     => true,
 716              '_builtin'      => true, /* internal use only. */
 717              /* translators: %s: Number of pending posts. */
 718              'label_count'   => _n_noop(
 719                  'Pending <span class="count">(%s)</span>',
 720                  'Pending <span class="count">(%s)</span>'
 721              ),
 722              'date_floating' => true,
 723          )
 724      );
 725  
 726      register_post_status(
 727          'private',
 728          array(
 729              'label'       => _x( 'Private', 'post status' ),
 730              'private'     => true,
 731              '_builtin'    => true, /* internal use only. */
 732              /* translators: %s: Number of private posts. */
 733              'label_count' => _n_noop(
 734                  'Private <span class="count">(%s)</span>',
 735                  'Private <span class="count">(%s)</span>'
 736              ),
 737          )
 738      );
 739  
 740      register_post_status(
 741          'trash',
 742          array(
 743              'label'                     => _x( 'Trash', 'post status' ),
 744              'internal'                  => true,
 745              '_builtin'                  => true, /* internal use only. */
 746              /* translators: %s: Number of trashed posts. */
 747              'label_count'               => _n_noop(
 748                  'Trash <span class="count">(%s)</span>',
 749                  'Trash <span class="count">(%s)</span>'
 750              ),
 751              'show_in_admin_status_list' => true,
 752          )
 753      );
 754  
 755      register_post_status(
 756          'auto-draft',
 757          array(
 758              'label'         => 'auto-draft',
 759              'internal'      => true,
 760              '_builtin'      => true, /* internal use only. */
 761              'date_floating' => true,
 762          )
 763      );
 764  
 765      register_post_status(
 766          'inherit',
 767          array(
 768              'label'               => 'inherit',
 769              'internal'            => true,
 770              '_builtin'            => true, /* internal use only. */
 771              'exclude_from_search' => false,
 772          )
 773      );
 774  
 775      register_post_status(
 776          'request-pending',
 777          array(
 778              'label'               => _x( 'Pending', 'request status' ),
 779              'internal'            => true,
 780              '_builtin'            => true, /* internal use only. */
 781              /* translators: %s: Number of pending requests. */
 782              'label_count'         => _n_noop(
 783                  'Pending <span class="count">(%s)</span>',
 784                  'Pending <span class="count">(%s)</span>'
 785              ),
 786              'exclude_from_search' => false,
 787          )
 788      );
 789  
 790      register_post_status(
 791          'request-confirmed',
 792          array(
 793              'label'               => _x( 'Confirmed', 'request status' ),
 794              'internal'            => true,
 795              '_builtin'            => true, /* internal use only. */
 796              /* translators: %s: Number of confirmed requests. */
 797              'label_count'         => _n_noop(
 798                  'Confirmed <span class="count">(%s)</span>',
 799                  'Confirmed <span class="count">(%s)</span>'
 800              ),
 801              'exclude_from_search' => false,
 802          )
 803      );
 804  
 805      register_post_status(
 806          'request-failed',
 807          array(
 808              'label'               => _x( 'Failed', 'request status' ),
 809              'internal'            => true,
 810              '_builtin'            => true, /* internal use only. */
 811              /* translators: %s: Number of failed requests. */
 812              'label_count'         => _n_noop(
 813                  'Failed <span class="count">(%s)</span>',
 814                  'Failed <span class="count">(%s)</span>'
 815              ),
 816              'exclude_from_search' => false,
 817          )
 818      );
 819  
 820      register_post_status(
 821          'request-completed',
 822          array(
 823              'label'               => _x( 'Completed', 'request status' ),
 824              'internal'            => true,
 825              '_builtin'            => true, /* internal use only. */
 826              /* translators: %s: Number of completed requests. */
 827              'label_count'         => _n_noop(
 828                  'Completed <span class="count">(%s)</span>',
 829                  'Completed <span class="count">(%s)</span>'
 830              ),
 831              'exclude_from_search' => false,
 832          )
 833      );
 834  }
 835  
 836  /**
 837   * Retrieves attached file path based on attachment ID.
 838   *
 839   * By default the path will go through the {@see 'get_attached_file'} filter, but
 840   * passing `true` to the `$unfiltered` argument will return the file path unfiltered.
 841   *
 842   * The function works by retrieving the `_wp_attached_file` post meta value.
 843   * This is a convenience function to prevent looking up the meta name and provide
 844   * a mechanism for sending the attached filename through a filter.
 845   *
 846   * @since 2.0.0
 847   *
 848   * @param int  $attachment_id Attachment ID.
 849   * @param bool $unfiltered    Optional. Whether to skip the {@see 'get_attached_file'} filter.
 850   *                            Default false.
 851   * @return string|false The file path to where the attached file should be, false otherwise.
 852   */
 853  function get_attached_file( $attachment_id, $unfiltered = false ) {
 854      $file = get_post_meta( $attachment_id, '_wp_attached_file', true );
 855  
 856      // If the file is relative, prepend upload dir.
 857      if ( $file && ! str_starts_with( $file, '/' ) && ! preg_match( '|^.:\\\|', $file ) ) {
 858          $uploads = wp_get_upload_dir();
 859          if ( false === $uploads['error'] ) {
 860              $file = $uploads['basedir'] . "/$file";
 861          }
 862      }
 863  
 864      if ( $unfiltered ) {
 865          return $file;
 866      }
 867  
 868      /**
 869       * Filters the attached file based on the given ID.
 870       *
 871       * @since 2.1.0
 872       *
 873       * @param string|false $file          The file path to where the attached file should be, false otherwise.
 874       * @param int          $attachment_id Attachment ID.
 875       */
 876      return apply_filters( 'get_attached_file', $file, $attachment_id );
 877  }
 878  
 879  /**
 880   * Updates attachment file path based on attachment ID.
 881   *
 882   * Used to update the file path of the attachment, which uses post meta name
 883   * `_wp_attached_file` to store the path of the attachment.
 884   *
 885   * @since 2.1.0
 886   *
 887   * @param int    $attachment_id Attachment ID.
 888   * @param string $file          File path for the attachment.
 889   * @return int|bool Meta ID if the `_wp_attached_file` key didn't exist for the attachment.
 890   *                  True on successful update, false on failure or if the `$file` value passed
 891   *                  to the function is the same as the one that is already in the database.
 892   */
 893  function update_attached_file( $attachment_id, $file ) {
 894      if ( ! get_post( $attachment_id ) ) {
 895          return false;
 896      }
 897  
 898      /**
 899       * Filters the path to the attached file to update.
 900       *
 901       * @since 2.1.0
 902       *
 903       * @param string $file          Path to the attached file to update.
 904       * @param int    $attachment_id Attachment ID.
 905       */
 906      $file = apply_filters( 'update_attached_file', $file, $attachment_id );
 907  
 908      $file = _wp_relative_upload_path( $file );
 909      if ( $file ) {
 910          return update_post_meta( $attachment_id, '_wp_attached_file', $file );
 911      } else {
 912          return delete_post_meta( $attachment_id, '_wp_attached_file' );
 913      }
 914  }
 915  
 916  /**
 917   * Returns relative path to an uploaded file.
 918   *
 919   * The path is relative to the current upload dir.
 920   *
 921   * @since 2.9.0
 922   * @access private
 923   *
 924   * @param string $path Full path to the file.
 925   * @return string Relative path on success, unchanged path on failure.
 926   */
 927  function _wp_relative_upload_path( $path ) {
 928      $new_path = $path;
 929  
 930      $uploads = wp_get_upload_dir();
 931      if ( str_starts_with( $new_path, $uploads['basedir'] ) ) {
 932              $new_path = str_replace( $uploads['basedir'], '', $new_path );
 933              $new_path = ltrim( $new_path, '/' );
 934      }
 935  
 936      /**
 937       * Filters the relative path to an uploaded file.
 938       *
 939       * @since 2.9.0
 940       *
 941       * @param string $new_path Relative path to the file.
 942       * @param string $path     Full path to the file.
 943       */
 944      return apply_filters( '_wp_relative_upload_path', $new_path, $path );
 945  }
 946  
 947  /**
 948   * Retrieves all children of the post parent ID.
 949   *
 950   * Normally, without any enhancements, the children would apply to pages. In the
 951   * context of the inner workings of WordPress, pages, posts, and attachments
 952   * share the same table, so therefore the functionality could apply to any one
 953   * of them. It is then noted that while this function does not work on posts, it
 954   * does not mean that it won't work on posts. It is recommended that you know
 955   * what context you wish to retrieve the children of.
 956   *
 957   * Attachments may also be made the child of a post, so if that is an accurate
 958   * statement (which needs to be verified), it would then be possible to get
 959   * all of the attachments for a post. Attachments have since changed since
 960   * version 2.5, so this is most likely inaccurate, but serves generally as an
 961   * example of what is possible.
 962   *
 963   * The arguments listed as defaults are for this function and also of the
 964   * get_posts() function. The arguments are combined with the get_children defaults
 965   * and are then passed to the get_posts() function, which accepts additional arguments.
 966   * You can replace the defaults in this function, listed below and the additional
 967   * arguments listed in the get_posts() function.
 968   *
 969   * The 'post_parent' is the most important argument and important attention
 970   * needs to be paid to the $args parameter. If you pass either an object or an
 971   * integer (number), then just the 'post_parent' is grabbed and everything else
 972   * is lost. If you don't specify any arguments, then it is assumed that you are
 973   * in The Loop and the post parent will be grabbed for from the current post.
 974   *
 975   * The 'post_parent' argument is the ID to get the children. The 'numberposts'
 976   * is the amount of posts to retrieve that has a default of '-1', which is
 977   * used to get all of the posts. Giving a number higher than 0 will only
 978   * retrieve that amount of posts.
 979   *
 980   * The 'post_type' and 'post_status' arguments can be used to choose what
 981   * criteria of posts to retrieve. The 'post_type' can be anything, but WordPress
 982   * post types are 'post', 'pages', and 'attachments'. The 'post_status'
 983   * argument will accept any post status within the write administration panels.
 984   *
 985   * @since 2.0.0
 986   *
 987   * @see get_posts()
 988   * @todo Check validity of description.
 989   *
 990   * @global WP_Post $post Global post object.
 991   *
 992   * @param mixed  $args   Optional. User defined arguments for replacing the defaults. Default empty.
 993   * @param string $output Optional. The required return type. One of OBJECT, ARRAY_A, or ARRAY_N, which
 994   *                       correspond to a WP_Post object, an associative array, or a numeric array,
 995   *                       respectively. Default OBJECT.
 996   * @return WP_Post[]|array[]|int[] Array of post objects, arrays, or IDs, depending on `$output`.
 997   *
 998   * @phpstan-param 'OBJECT'|'ARRAY_A'|'ARRAY_N' $output
 999   * @phpstan-return (
1000   *     $args is array{ fields: 'ids', ... } ? int[] : (
1001   *         $output is 'ARRAY_A' ? array<int, non-empty-array<string, mixed>> : (
1002   *             $output is 'ARRAY_N' ? array<int, non-empty-array<int, mixed>> : WP_Post[]
1003   *         )
1004   *     )
1005   * )
1006   */
1007  function get_children( $args = '', $output = OBJECT ) {
1008      $kids = array();
1009      if ( empty( $args ) ) {
1010          if ( isset( $GLOBALS['post'] ) ) {
1011              $args = array( 'post_parent' => (int) $GLOBALS['post']->post_parent );
1012          } else {
1013              return $kids;
1014          }
1015      } elseif ( is_object( $args ) ) {
1016          $args = array( 'post_parent' => (int) $args->post_parent );
1017      } elseif ( is_numeric( $args ) ) {
1018          $args = array( 'post_parent' => (int) $args );
1019      }
1020  
1021      $defaults = array(
1022          'numberposts' => -1,
1023          'post_type'   => 'any',
1024          'post_status' => 'any',
1025          'post_parent' => 0,
1026      );
1027  
1028      $parsed_args = wp_parse_args( $args, $defaults );
1029  
1030      $children = get_posts( $parsed_args );
1031  
1032      if ( ! $children ) {
1033          return $kids;
1034      }
1035  
1036      if ( ! empty( $parsed_args['fields'] ) ) {
1037          return $children;
1038      }
1039  
1040      update_post_cache( $children );
1041  
1042      foreach ( $children as $key => $child ) {
1043          $kids[ $child->ID ] = $children[ $key ];
1044      }
1045  
1046      if ( OBJECT === $output ) {
1047          return $kids;
1048      } elseif ( ARRAY_A === $output ) {
1049          $weeuns = array();
1050          foreach ( (array) $kids as $kid ) {
1051              /** @var non-empty-array<string, mixed> $vars */
1052              $vars               = get_object_vars( $kids[ $kid->ID ] );
1053              $weeuns[ $kid->ID ] = $vars;
1054          }
1055          return $weeuns;
1056      } elseif ( ARRAY_N === $output ) {
1057          $babes = array();
1058          foreach ( (array) $kids as $kid ) {
1059              /** @var non-empty-array<string, mixed> $vars */
1060              $vars              = get_object_vars( $kids[ $kid->ID ] );
1061              $babes[ $kid->ID ] = array_values( $vars );
1062          }
1063          return $babes;
1064      } else {
1065          return $kids;
1066      }
1067  }
1068  
1069  /**
1070   * Gets extended entry info (<!--more-->).
1071   *
1072   * There should not be any space after the second dash and before the word
1073   * 'more'. There can be text or space(s) after the word 'more', but won't be
1074   * referenced.
1075   *
1076   * The returned array has 'main', 'extended', and 'more_text' keys. Main has the text before
1077   * the `<!--more-->`. The 'extended' key has the content after the
1078   * `<!--more-->` comment. The 'more_text' key has the custom "Read More" text.
1079   *
1080   * @since 1.0.0
1081   *
1082   * @param string $post Post content.
1083   * @return string[] {
1084   *     Extended entry info.
1085   *
1086   *     @type string $main      Content before the more tag.
1087   *     @type string $extended  Content after the more tag.
1088   *     @type string $more_text Custom read more text, or empty string.
1089   * }
1090   */
1091  function get_extended( $post ) {
1092      // Match the new style more links.
1093      if ( preg_match( '/<!--more(.*?)?-->/', $post, $matches ) ) {
1094          list($main, $extended) = explode( $matches[0], $post, 2 );
1095          $more_text             = $matches[1];
1096      } else {
1097          $main      = $post;
1098          $extended  = '';
1099          $more_text = '';
1100      }
1101  
1102      // Leading and trailing whitespace.
1103      $main      = preg_replace( '/^[\s]*(.*)[\s]*$/', '\\1', $main );
1104      $extended  = preg_replace( '/^[\s]*(.*)[\s]*$/', '\\1', $extended );
1105      $more_text = preg_replace( '/^[\s]*(.*)[\s]*$/', '\\1', $more_text );
1106  
1107      return array(
1108          'main'      => $main,
1109          'extended'  => $extended,
1110          'more_text' => $more_text,
1111      );
1112  }
1113  
1114  /**
1115   * Retrieves post data given a post ID or post object.
1116   *
1117   * See sanitize_post() for optional $filter values. Also, the parameter
1118   * `$post`, must be given as a variable, since it is passed by reference.
1119   *
1120   * @since 1.5.1
1121   *
1122   * @global WP_Post $post Global post object.
1123   *
1124   * @param int|object|null  $post   Optional. Post ID or post object. `null`, `false`, `0` and other PHP falsey values
1125   *                                 return the current global post inside the loop. A numerically valid post ID that
1126   *                                 points to a non-existent post returns `null`. Defaults to global $post.
1127   * @param string           $output Optional. The required return type. One of OBJECT, ARRAY_A, or ARRAY_N, which
1128   *                                 correspond to a WP_Post object, an associative array, or a numeric array,
1129   *                                 respectively. Default OBJECT.
1130   * @param string           $filter Optional. Type of filter to apply. Accepts 'raw', 'edit', 'db',
1131   *                                 or 'display'. Default 'raw'.
1132   * @return WP_Post|array|null Type corresponding to $output on success or null on failure.
1133   *                            When $output is OBJECT, a `WP_Post` instance is returned.
1134   *
1135   * @phpstan-param int|numeric-string|WP_Post|null $post
1136   * @phpstan-param 'OBJECT'|'ARRAY_A'|'ARRAY_N' $output
1137   * @phpstan-param 'raw'|'edit'|'db'|'display' $filter
1138   * @phpstan-return (
1139   *     $output is 'ARRAY_A' ? non-empty-array<string, mixed>|null : (
1140   *         $output is 'ARRAY_N' ? non-empty-array<int, mixed>|null : (
1141   *             WP_Post|null
1142   *         )
1143   *     )
1144   * )
1145   */
1146  function get_post( $post = null, $output = OBJECT, $filter = 'raw' ) {
1147      if ( empty( $post ) && isset( $GLOBALS['post'] ) ) {
1148          $post = $GLOBALS['post'];
1149      }
1150  
1151      if ( $post instanceof WP_Post ) {
1152          $_post = $post;
1153      } elseif ( is_object( $post ) ) {
1154          /** @var stdClass $post */
1155          if ( empty( $post->filter ) ) {
1156              $_post = sanitize_post( $post, 'raw' );
1157              $_post = new WP_Post( $_post );
1158          } elseif ( 'raw' === $post->filter ) {
1159              $_post = new WP_Post( $post );
1160          } elseif ( isset( $post->ID ) ) {
1161              $_post = WP_Post::get_instance( (int) $post->ID );
1162          } else {
1163              $_post = null;
1164          }
1165      } elseif ( is_numeric( $post ) ) {
1166          $_post = WP_Post::get_instance( (int) $post );
1167      } else {
1168          $_post = null;
1169      }
1170  
1171      if ( ! $_post ) {
1172          return null;
1173      }
1174  
1175      $_post = $_post->filter( $filter );
1176      if ( ! $_post ) {
1177          return null;
1178      }
1179  
1180      if ( ARRAY_A === $output ) {
1181          return $_post->to_array();
1182      } elseif ( ARRAY_N === $output ) {
1183          return array_values( $_post->to_array() );
1184      }
1185  
1186      return $_post;
1187  }
1188  
1189  /**
1190   * Retrieves the IDs of the ancestors of a post.
1191   *
1192   * @since 2.5.0
1193   *
1194   * @param int|WP_Post $post Post ID or post object.
1195   * @return int[] Array of ancestor IDs or empty array if there are none.
1196   * @phpstan-return list<non-negative-int>
1197   */
1198  function get_post_ancestors( $post ) {
1199      $post = get_post( $post );
1200  
1201      if ( ! $post || empty( $post->post_parent ) || $post->post_parent === $post->ID ) {
1202          return array();
1203      }
1204  
1205      $ancestors = array();
1206  
1207      $id          = $post->post_parent;
1208      $ancestors[] = $id;
1209  
1210      while ( $ancestor = get_post( $id ) ) {
1211          // Loop detection: If the ancestor has been seen before, break.
1212          if ( empty( $ancestor->post_parent ) || $ancestor->post_parent === $post->ID
1213              || in_array( $ancestor->post_parent, $ancestors, true )
1214          ) {
1215              break;
1216          }
1217  
1218          $id          = $ancestor->post_parent;
1219          $ancestors[] = $id;
1220      }
1221  
1222      return $ancestors;
1223  }
1224  
1225  /**
1226   * Retrieves data from a post field based on Post ID.
1227   *
1228   * Examples of the post field will be, 'post_type', 'post_status', 'post_content',
1229   * etc and based off of the post object property or key names.
1230   *
1231   * The context values are based off of the taxonomy filter functions and
1232   * supported values are found within those functions.
1233   *
1234   * @since 2.3.0
1235   * @since 4.5.0 The `$post` parameter was made optional.
1236   *
1237   * @see sanitize_post_field()
1238   *
1239   * @param string      $field   Post field name.
1240   * @param int|WP_Post $post    Optional. Post ID or post object. Defaults to global $post.
1241   * @param string      $context Optional. How to filter the field. Accepts 'raw', 'edit', 'db',
1242   *                             or 'display'. Default 'display'.
1243   * @return int|string|int[] The value of the post field on success, empty string on failure.
1244   *
1245   * @phpstan-param 'raw'|'edit'|'db'|'display' $context
1246   * @phpstan-return (
1247   *     $field is 'ID'|'post_parent'|'menu_order' ? int|'' : (
1248   *         $field is 'ancestors' ? non-negative-int[]|'' : string
1249   *     )
1250   * )
1251   */
1252  function get_post_field( $field, $post = null, $context = 'display' ) {
1253      $post = get_post( $post );
1254  
1255      if ( ! $post ) {
1256          return '';
1257      }
1258  
1259      if ( ! isset( $post->$field ) ) {
1260          return '';
1261      }
1262  
1263      return sanitize_post_field( $field, $post->$field, $post->ID, $context );
1264  }
1265  
1266  /**
1267   * Retrieves the mime type of an attachment based on the ID.
1268   *
1269   * This function can be used with any post type, but it makes more sense with
1270   * attachments.
1271   *
1272   * @since 2.0.0
1273   *
1274   * @param int|WP_Post|null $post Optional. Post ID or post object. Defaults to global $post.
1275   * @return string|false The mime type on success, false on failure.
1276   */
1277  function get_post_mime_type( $post = null ) {
1278      $post = get_post( $post );
1279  
1280      if ( is_object( $post ) ) {
1281          return $post->post_mime_type;
1282      }
1283  
1284      return false;
1285  }
1286  
1287  /**
1288   * Retrieves the post status based on the post ID.
1289   *
1290   * If the post ID is of an attachment, then the parent post status will be given
1291   * instead.
1292   *
1293   * @since 2.0.0
1294   *
1295   * @param int|WP_Post $post Optional. Post ID or post object. Defaults to global $post.
1296   * @return string|false Post status on success, false on failure.
1297   */
1298  function get_post_status( $post = null ) {
1299      // Normalize the post object if necessary, skip normalization if called from get_sample_permalink().
1300      if ( ! $post instanceof WP_Post || ! isset( $post->filter ) || 'sample' !== $post->filter ) {
1301          $post = get_post( $post );
1302      }
1303  
1304      if ( ! is_object( $post ) ) {
1305          return false;
1306      }
1307  
1308      $post_status = $post->post_status;
1309  
1310      if (
1311          'attachment' === $post->post_type &&
1312          'inherit' === $post_status
1313      ) {
1314          if (
1315              0 === $post->post_parent ||
1316              ! get_post( $post->post_parent ) ||
1317              $post->ID === $post->post_parent
1318          ) {
1319              // Unattached attachments with inherit status are assumed to be published.
1320              $post_status = 'publish';
1321          } elseif ( 'trash' === get_post_status( $post->post_parent ) ) {
1322              // Get parent status prior to trashing.
1323              $post_status = get_post_meta( $post->post_parent, '_wp_trash_meta_status', true );
1324  
1325              if ( ! $post_status ) {
1326                  // Assume publish as above.
1327                  $post_status = 'publish';
1328              }
1329          } else {
1330              $post_status = get_post_status( $post->post_parent );
1331          }
1332      } elseif (
1333          'attachment' === $post->post_type &&
1334          ! in_array( $post_status, array( 'private', 'trash', 'auto-draft' ), true )
1335      ) {
1336          /*
1337           * Ensure uninherited attachments have a permitted status either 'private', 'trash', 'auto-draft'.
1338           * This is to match the logic in wp_insert_post().
1339           *
1340           * Note: 'inherit' is excluded from this check as it is resolved to the parent post's
1341           * status in the logic block above.
1342           */
1343          $post_status = 'publish';
1344      }
1345  
1346      /**
1347       * Filters the post status.
1348       *
1349       * @since 4.4.0
1350       * @since 5.7.0 The attachment post type is now passed through this filter.
1351       *
1352       * @param string  $post_status The post status.
1353       * @param WP_Post $post        The post object.
1354       */
1355      return apply_filters( 'get_post_status', $post_status, $post );
1356  }
1357  
1358  /**
1359   * Retrieves all of the WordPress supported post statuses.
1360   *
1361   * Posts have a limited set of valid status values, this provides the
1362   * post_status values and descriptions.
1363   *
1364   * @since 2.5.0
1365   *
1366   * @return string[] Array of post status labels keyed by their status.
1367   */
1368  function get_post_statuses() {
1369      $status = array(
1370          'draft'   => __( 'Draft' ),
1371          'pending' => __( 'Pending Review' ),
1372          'private' => __( 'Private' ),
1373          'publish' => __( 'Published' ),
1374      );
1375  
1376      return $status;
1377  }
1378  
1379  /**
1380   * Retrieves all of the WordPress support page statuses.
1381   *
1382   * Pages have a limited set of valid status values, this provides the
1383   * post_status values and descriptions.
1384   *
1385   * @since 2.5.0
1386   *
1387   * @return string[] Array of page status labels keyed by their status.
1388   */
1389  function get_page_statuses() {
1390      $status = array(
1391          'draft'   => __( 'Draft' ),
1392          'private' => __( 'Private' ),
1393          'publish' => __( 'Published' ),
1394      );
1395  
1396      return $status;
1397  }
1398  
1399  /**
1400   * Returns statuses for privacy requests.
1401   *
1402   * @since 4.9.6
1403   * @access private
1404   *
1405   * @return string[] Array of privacy request status labels keyed by their status.
1406   */
1407  function _wp_privacy_statuses() {
1408      return array(
1409          'request-pending'   => _x( 'Pending', 'request status' ),      // Pending confirmation from user.
1410          'request-confirmed' => _x( 'Confirmed', 'request status' ),    // User has confirmed the action.
1411          'request-failed'    => _x( 'Failed', 'request status' ),       // User failed to confirm the action.
1412          'request-completed' => _x( 'Completed', 'request status' ),    // Admin has handled the request.
1413      );
1414  }
1415  
1416  /**
1417   * Registers a post status. Do not use before init.
1418   *
1419   * A simple function for creating or modifying a post status based on the
1420   * parameters given. The function will accept an array (second optional
1421   * parameter), along with a string for the post status name.
1422   *
1423   * Arguments prefixed with an _underscore shouldn't be used by plugins and themes.
1424   *
1425   * @since 3.0.0
1426   *
1427   * @global stdClass[] $wp_post_statuses Inserts new post status object into the list
1428   *
1429   * @param string       $post_status Name of the post status.
1430   * @param array|string $args {
1431   *     Optional. Array or string of post status arguments.
1432   *
1433   *     @type bool|string $label                     A descriptive name for the post status marked
1434   *                                                  for translation. Defaults to value of $post_status.
1435   *     @type array|false $label_count               Nooped plural text from _n_noop() to provide the singular
1436   *                                                  and plural forms of the label for counts. Default false
1437   *                                                  which means the `$label` argument will be used for both
1438   *                                                  the singular and plural forms of this label.
1439   *     @type bool        $exclude_from_search       Whether to exclude posts with this post status
1440   *                                                  from search results. Default is value of $internal.
1441   *     @type bool        $_builtin                  Whether the status is built-in. Core-use only.
1442   *                                                  Default false.
1443   *     @type bool        $public                    Whether posts of this status should be shown
1444   *                                                  in the front end of the site. Default false.
1445   *     @type bool        $internal                  Whether the status is for internal use only.
1446   *                                                  Default false.
1447   *     @type bool        $protected                 Whether posts with this status should be protected.
1448   *                                                  Default false.
1449   *     @type bool        $private                   Whether posts with this status should be private.
1450   *                                                  Default false.
1451   *     @type bool        $publicly_queryable        Whether posts with this status should be publicly-
1452   *                                                  queryable. Default is value of $public.
1453   *     @type bool        $show_in_admin_all_list    Whether to include posts in the edit listing for
1454   *                                                  their post type. Default is the opposite value
1455   *                                                  of $internal.
1456   *     @type bool        $show_in_admin_status_list Show in the list of statuses with post counts at
1457   *                                                  the top of the edit listings,
1458   *                                                  e.g. All (12) | Published (9) | My Custom Status (2)
1459   *                                                  Default is the opposite value of $internal.
1460   *     @type bool        $date_floating             Whether the post has a floating creation date.
1461   *                                                  Default to false.
1462   * }
1463   * @return object
1464   *
1465   * @phpstan-param lowercase-string&non-falsy-string $post_status
1466   */
1467  function register_post_status( $post_status, $args = array() ) {
1468      global $wp_post_statuses;
1469  
1470      if ( ! is_array( $wp_post_statuses ) ) {
1471          $wp_post_statuses = array();
1472      }
1473  
1474      // Args prefixed with an underscore are reserved for internal use.
1475      $defaults = array(
1476          'label'                     => false,
1477          'label_count'               => false,
1478          'exclude_from_search'       => null,
1479          '_builtin'                  => false,
1480          'public'                    => null,
1481          'internal'                  => null,
1482          'protected'                 => null,
1483          'private'                   => null,
1484          'publicly_queryable'        => null,
1485          'show_in_admin_status_list' => null,
1486          'show_in_admin_all_list'    => null,
1487          'date_floating'             => null,
1488      );
1489      $args     = wp_parse_args( $args, $defaults );
1490      $args     = (object) $args;
1491  
1492      $post_status = sanitize_key( $post_status );
1493      $args->name  = $post_status;
1494  
1495      // Set various defaults.
1496      if ( null === $args->public && null === $args->internal && null === $args->protected && null === $args->private ) {
1497          $args->internal = true;
1498      }
1499  
1500      $args->public                    ??= false;
1501      $args->private                   ??= false;
1502      $args->protected                 ??= false;
1503      $args->internal                  ??= false;
1504      $args->publicly_queryable        ??= $args->public;
1505      $args->exclude_from_search       ??= $args->internal;
1506      $args->show_in_admin_all_list    ??= ! $args->internal;
1507      $args->show_in_admin_status_list ??= ! $args->internal;
1508      $args->date_floating             ??= false;
1509  
1510      if ( false === $args->label ) {
1511          $args->label = $post_status;
1512      }
1513  
1514      if ( false === $args->label_count ) {
1515          // phpcs:ignore WordPress.WP.I18n.NonSingularStringLiteralSingular,WordPress.WP.I18n.NonSingularStringLiteralPlural
1516          $args->label_count = _n_noop( $args->label, $args->label ); // @phpstan-ignore argument.type, argument.type (The label is a runtime value, so there is nothing to extract for translation.)
1517      }
1518  
1519      $wp_post_statuses[ $post_status ] = $args;
1520  
1521      return $args;
1522  }
1523  
1524  /**
1525   * Retrieves a post status object by name.
1526   *
1527   * @since 3.0.0
1528   *
1529   * @see register_post_status()
1530   *
1531   * @global stdClass[] $wp_post_statuses List of post statuses.
1532   *
1533   * @param string $post_status The name of a registered post status.
1534   * @return stdClass|null A post status object.
1535   */
1536  function get_post_status_object( $post_status ) {
1537      global $wp_post_statuses;
1538  
1539      if ( ! is_string( $post_status ) || empty( $wp_post_statuses[ $post_status ] ) ) {
1540          return null;
1541      }
1542  
1543      return $wp_post_statuses[ $post_status ];
1544  }
1545  
1546  /**
1547   * Gets a list of post statuses.
1548   *
1549   * @since 3.0.0
1550   *
1551   * @see register_post_status()
1552   *
1553   * @global stdClass[] $wp_post_statuses List of post statuses.
1554   *
1555   * @param array|string $args     Optional. Array or string of post status arguments to compare against
1556   *                               properties of the global `$wp_post_statuses objects`. Default empty array.
1557   * @param string       $output   Optional. The type of output to return, either 'names' or 'objects'. Default 'names'.
1558   * @param string       $operator Optional. The logical operation to perform. 'or' means only one element
1559   *                               from the array needs to match; 'and' means all elements must match.
1560   *                               Default 'and'.
1561   * @return string[]|stdClass[] A list of post status names or objects.
1562   * @phpstan-return ( $output is 'names' ? array<non-falsy-string, non-falsy-string> : array<non-falsy-string, stdClass> )
1563   */
1564  function get_post_stati( $args = array(), $output = 'names', $operator = 'and' ) {
1565      global $wp_post_statuses;
1566  
1567      $field = ( 'names' === $output ) ? 'name' : false;
1568  
1569      return wp_filter_object_list( $wp_post_statuses, $args, $operator, $field );
1570  }
1571  
1572  /**
1573   * Determines whether the post type is hierarchical.
1574   *
1575   * A false return value might also mean that the post type does not exist.
1576   *
1577   * @since 3.0.0
1578   *
1579   * @see get_post_type_object()
1580   *
1581   * @param string $post_type Post type name
1582   * @return bool Whether post type is hierarchical.
1583   */
1584  function is_post_type_hierarchical( $post_type ) {
1585      if ( ! post_type_exists( $post_type ) ) {
1586          return false;
1587      }
1588  
1589      $post_type = get_post_type_object( $post_type );
1590      return $post_type->hierarchical;
1591  }
1592  
1593  /**
1594   * Determines whether a post type is registered.
1595   *
1596   * For more information on this and similar theme functions, check out
1597   * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
1598   * Conditional Tags} article in the Theme Developer Handbook.
1599   *
1600   * @since 3.0.0
1601   *
1602   * @see get_post_type_object()
1603   *
1604   * @param string $post_type Post type name.
1605   * @return bool Whether post type is registered.
1606   */
1607  function post_type_exists( $post_type ) {
1608      return (bool) get_post_type_object( $post_type );
1609  }
1610  
1611  /**
1612   * Retrieves the post type of the current post or of a given post.
1613   *
1614   * @since 2.1.0
1615   *
1616   * @param int|WP_Post|null $post Optional. Post ID or post object. Default is global $post.
1617   * @return string|false          Post type on success, false on failure.
1618   */
1619  function get_post_type( $post = null ) {
1620      $post = get_post( $post );
1621      if ( $post ) {
1622          return $post->post_type;
1623      }
1624  
1625      return false;
1626  }
1627  
1628  /**
1629   * Retrieves a post type object by name.
1630   *
1631   * @since 3.0.0
1632   * @since 4.6.0 Object returned is now an instance of `WP_Post_Type`.
1633   *
1634   * @see register_post_type()
1635   *
1636   * @global array $wp_post_types List of post types.
1637   *
1638   * @param string $post_type The name of a registered post type.
1639   * @return WP_Post_Type|null WP_Post_Type object if it exists, null otherwise.
1640   */
1641  function get_post_type_object( $post_type ) {
1642      global $wp_post_types;
1643  
1644      if ( ! is_scalar( $post_type ) || empty( $wp_post_types[ $post_type ] ) ) {
1645          return null;
1646      }
1647  
1648      return $wp_post_types[ $post_type ];
1649  }
1650  
1651  /**
1652   * Gets a list of all registered post type objects.
1653   *
1654   * @since 2.9.0
1655   *
1656   * @see register_post_type() for accepted arguments.
1657   *
1658   * @global array $wp_post_types List of post types.
1659   *
1660   * @param array|string $args     Optional. An array of key => value arguments to match against
1661   *                               the post type objects. Default empty array.
1662   * @param string       $output   Optional. The type of output to return. Either 'names'
1663   *                               or 'objects'. Default 'names'.
1664   * @param string       $operator Optional. The logical operation to perform. 'or' means only one
1665   *                               element from the array needs to match; 'and' means all elements
1666   *                               must match; 'not' means no elements may match. Default 'and'.
1667   * @return string[]|WP_Post_Type[] An array of post type names or objects.
1668   * @phpstan-return ( $output is 'names' ? string[] : WP_Post_Type[] )
1669   */
1670  function get_post_types( $args = array(), $output = 'names', $operator = 'and' ) {
1671      global $wp_post_types;
1672  
1673      $field = ( 'names' === $output ) ? 'name' : false;
1674  
1675      return wp_filter_object_list( $wp_post_types, $args, $operator, $field );
1676  }
1677  
1678  /**
1679   * Registers a post type.
1680   *
1681   * Note: Post type registrations should not be hooked before the
1682   * {@see 'init'} action. Also, any taxonomy connections should be
1683   * registered via the `$taxonomies` argument to ensure consistency
1684   * when hooks such as {@see 'parse_query'} or {@see 'pre_get_posts'}
1685   * are used.
1686   *
1687   * Post types can support any number of built-in core features such
1688   * as meta boxes, custom fields, post thumbnails, post statuses,
1689   * comments, and more. See the `$supports` argument for a complete
1690   * list of supported features.
1691   *
1692   * @since 2.9.0
1693   * @since 3.0.0 The `show_ui` argument is now enforced on the new post screen.
1694   * @since 4.4.0 The `show_ui` argument is now enforced on the post type listing
1695   *              screen and post editing screen.
1696   * @since 4.6.0 Post type object returned is now an instance of `WP_Post_Type`.
1697   * @since 4.7.0 Introduced `show_in_rest`, `rest_base` and `rest_controller_class`
1698   *              arguments to register the post type in REST API.
1699   * @since 5.0.0 The `template` and `template_lock` arguments were added.
1700   * @since 5.3.0 The `supports` argument will now accept an array of arguments for a feature.
1701   * @since 5.9.0 The `rest_namespace` argument was added.
1702   * @since 7.2.0 The `show_in_abilities` argument was added.
1703   *
1704   * @global array $wp_post_types List of post types.
1705   *
1706   * @param string       $post_type Post type key. Must not exceed 20 characters and may only contain
1707   *                                lowercase alphanumeric characters, dashes, and underscores. See sanitize_key().
1708   * @param array|string $args {
1709   *     Array or string of arguments for registering a post type.
1710   *
1711   *     @type string       $label                           Name of the post type shown in the menu. Usually plural.
1712   *                                                         Default is value of $labels['name'].
1713   *     @type string[]     $labels                          An array of labels for this post type. If not set, post
1714   *                                                         labels are inherited for non-hierarchical types and page
1715   *                                                         labels for hierarchical ones. See get_post_type_labels() for a full
1716   *                                                         list of supported labels.
1717   *     @type string       $description                     A short descriptive summary of what the post type is.
1718   *                                                         Default empty.
1719   *     @type bool         $public                          Whether a post type is intended for use publicly either via
1720   *                                                         the admin interface or by front-end users. While the default
1721   *                                                         settings of $exclude_from_search, $publicly_queryable, $show_ui,
1722   *                                                         and $show_in_nav_menus are inherited from $public, each does not
1723   *                                                         rely on this relationship and controls a very specific intention.
1724   *                                                         Default false.
1725   *     @type bool         $hierarchical                    Whether the post type is hierarchical (e.g. page). Default false.
1726   *     @type bool         $exclude_from_search             Whether to exclude posts with this post type from front end search
1727   *                                                         results. Default is the opposite value of $public.
1728   *     @type bool         $publicly_queryable              Whether queries can be performed on the front end for the post type
1729   *                                                         as part of parse_request(). Endpoints would include:
1730   *                                                          * ?post_type={post_type_key}
1731   *                                                          * ?{post_type_key}={single_post_slug}
1732   *                                                          * ?{post_type_query_var}={single_post_slug}
1733   *                                                         If not set, the default is inherited from $public.
1734   *     @type bool         $randomable                      Whether posts of this post type can be selected by random content
1735   *                                                         redirects, such as example.com/random/. If not set, the default is
1736   *                                                         true when $publicly_queryable is true and $has_archive is set.
1737   *     @type bool         $show_ui                         Whether to generate and allow a UI for managing this post type in the
1738   *                                                         admin. Default is value of $public.
1739   *     @type bool|string  $show_in_menu                    Where to show the post type in the admin menu. To work, $show_ui
1740   *                                                         must be true. If true, the post type is shown in its own top level
1741   *                                                         menu. If false, no menu is shown. If a string of an existing top
1742   *                                                         level menu ('tools.php' or 'edit.php?post_type=page', for example), the
1743   *                                                         post type will be placed as a sub-menu of that.
1744   *                                                         Default is value of $show_ui.
1745   *     @type bool         $show_in_nav_menus               Makes this post type available for selection in navigation menus.
1746   *                                                         Default is value of $public.
1747   *     @type bool         $show_in_admin_bar               Makes this post type available via the admin bar. Default is value
1748   *                                                         of $show_in_menu.
1749   *     @type bool         $show_in_rest                    Whether to include the post type in the REST API. Set this to true
1750   *                                                         for the post type to be available in the block editor.
1751   *     @type bool         $show_in_abilities               Whether to expose this post type through the Abilities API, so the
1752   *                                                         core content abilities can access its posts, subject to the current
1753   *                                                         user's capabilities. Default false.
1754   *     @type string       $rest_base                       To change the base URL of REST API route. Default is $post_type.
1755   *     @type string       $rest_namespace                  To change the namespace URL of REST API route. Default is wp/v2.
1756   *     @type string       $rest_controller_class           REST API controller class name. Default is 'WP_REST_Posts_Controller'.
1757   *     @type string|bool  $autosave_rest_controller_class  REST API controller class name. Default is 'WP_REST_Autosaves_Controller'.
1758   *     @type string|bool  $revisions_rest_controller_class REST API controller class name. Default is 'WP_REST_Revisions_Controller'.
1759   *     @type bool         $late_route_registration         A flag to direct the REST API controllers for autosave / revisions
1760   *                                                         should be registered before/after the post type controller.
1761   *     @type int          $menu_position                   The position in the menu order the post type should appear. To work,
1762   *                                                         $show_in_menu must be true. Default null (at the bottom).
1763   *     @type string       $menu_icon                       The URL to the icon to be used for this menu. Pass a base64-encoded
1764   *                                                         SVG using a data URI, which will be colored to match the color scheme
1765   *                                                         -- this should begin with 'data:image/svg+xml;base64,'. Pass the name
1766   *                                                         of a Dashicons helper class to use a font icon, e.g.
1767   *                                                        'dashicons-chart-pie'. Pass the namespaced name of a registered icon
1768   *                                                         to render it as an inline SVG, e.g. 'core-admin/pin'. Pass 'none'
1769   *                                                         to leave div.wp-menu-image empty so an icon can be added via CSS.
1770   *                                                         Defaults to use the posts icon.
1771   *     @type string|array $capability_type                 The string to use to build the read, edit, and delete capabilities.
1772   *                                                         May be passed as an array to allow for alternative plurals when using
1773   *                                                         this argument as a base to construct the capabilities, e.g.
1774   *                                                         array('story', 'stories'). Default 'post'.
1775   *     @type string[]     $capabilities                    Array of capabilities for this post type. $capability_type is used
1776   *                                                         as a base to construct capabilities by default.
1777   *                                                         See get_post_type_capabilities().
1778   *     @type bool         $map_meta_cap                    Whether to use the internal default meta capability handling.
1779   *                                                         Default false.
1780   *     @type array|false  $supports                        Core feature(s) the post type supports. Serves as an alias for calling
1781   *                                                         add_post_type_support() directly. Core features include 'title',
1782   *                                                         'editor', 'comments', 'revisions', 'trackbacks', 'author', 'excerpt',
1783   *                                                         'page-attributes', 'thumbnail', 'custom-fields', and 'post-formats'.
1784   *                                                         Additionally, the 'revisions' feature dictates whether the post type
1785   *                                                         will store revisions, the 'autosave' feature dictates whether the post type
1786   *                                                         will be autosaved, and the 'comments' feature dictates whether the
1787   *                                                         comments count will show on the edit screen. For backward compatibility reasons,
1788   *                                                         adding 'editor' support implies 'autosave' support too. A feature can also be
1789   *                                                         specified as an array of arguments to provide additional information
1790   *                                                         about supporting that feature.
1791   *                                                         Example: `array( 'my_feature', array( 'field' => 'value' ) )`.
1792   *                                                         If false, no features will be added.
1793   *                                                         Default is an array containing 'title' and 'editor'.
1794   *     @type callable     $register_meta_box_cb            Provide a callback function that sets up the meta boxes for the
1795   *                                                         edit form. Do remove_meta_box() and add_meta_box() calls in the
1796   *                                                         callback. Default null.
1797   *     @type string[]     $taxonomies                      An array of taxonomy identifiers that will be registered for the
1798   *                                                         post type. Taxonomies can be registered later with register_taxonomy()
1799   *                                                         or register_taxonomy_for_object_type().
1800   *                                                         Default empty array.
1801   *     @type bool|string  $has_archive                     Whether there should be post type archives, or if a string, the
1802   *                                                         archive slug to use. Will generate the proper rewrite rules if
1803   *                                                         $rewrite is enabled. Default false.
1804   *     @type bool|array   $rewrite                         {
1805   *         Triggers the handling of rewrites for this post type. To prevent rewrite, set to false.
1806   *         Defaults to true, using $post_type as slug. To specify rewrite rules, an array can be
1807   *         passed with any of these keys:
1808   *
1809   *         @type string $slug       Customize the permastruct slug. Defaults to $post_type key.
1810   *         @type bool   $with_front Whether the permastruct should be prepended with WP_Rewrite::$front.
1811   *                                  Default true.
1812   *         @type bool   $feeds      Whether the feed permastruct should be built for this post type.
1813   *                                  Default is value of $has_archive.
1814   *         @type bool   $pages      Whether the permastruct should provide for pagination. Default true.
1815   *         @type int    $ep_mask    Endpoint mask to assign. If not specified and permalink_epmask is set,
1816   *                                  inherits from $permalink_epmask. If not specified and permalink_epmask
1817   *                                  is not set, defaults to EP_PERMALINK.
1818   *     }
1819   *     @type string|bool  $query_var                      Sets the query_var key for this post type. Defaults to $post_type
1820   *                                                        key. If false, a post type cannot be loaded at
1821   *                                                        ?{query_var}={post_slug}. If specified as a string, the query
1822   *                                                        ?{query_var_string}={post_slug} will be valid.
1823   *     @type bool         $can_export                     Whether to allow this post type to be exported. Default true.
1824   *     @type bool         $delete_with_user               Whether to delete posts of this type when deleting a user.
1825   *                                                          * If true, posts of this type belonging to the user will be moved
1826   *                                                            to Trash when the user is deleted.
1827   *                                                          * If false, posts of this type belonging to the user will *not*
1828   *                                                            be trashed or deleted.
1829   *                                                          * If not set (the default), posts are trashed if post type supports
1830   *                                                            the 'author' feature. Otherwise posts are not trashed or deleted.
1831   *                                                        Default null.
1832   *     @type array        $template                       Array of blocks to use as the default initial state for an editor
1833   *                                                        session. Each item should be an array containing block name and
1834   *                                                        optional attributes. Default empty array.
1835   *     @type string|false $template_lock                  Whether the block template should be locked if $template is set.
1836   *                                                          * If set to 'all', the user is unable to insert new blocks,
1837   *                                                            move existing blocks and delete blocks.
1838   *                                                          * If set to 'insert', the user is able to move existing blocks
1839   *                                                            but is unable to insert new blocks and delete blocks.
1840   *                                                          * If set to 'contentOnly', the user is only able to edit the content
1841   *                                                            of existing blocks.
1842   *                                                        Default false.
1843   *     @type bool         $_builtin                       FOR INTERNAL USE ONLY! True if this post type is a native or
1844   *                                                        "built-in" post_type. Default false.
1845   *     @type string       $_edit_link                     FOR INTERNAL USE ONLY! URL segment to use for edit link of
1846   *                                                        this post type. Default 'post.php?post=%d'.
1847   * }
1848   * @return WP_Post_Type|WP_Error The registered post type object on success,
1849   *                               WP_Error object on failure.
1850   *
1851   * @phpstan-param lowercase-string&non-falsy-string $post_type
1852   */
1853  function register_post_type( $post_type, $args = array() ) {
1854      global $wp_post_types;
1855  
1856      if ( ! is_array( $wp_post_types ) ) {
1857          $wp_post_types = array();
1858      }
1859  
1860      // Sanitize post type name.
1861      $post_type = sanitize_key( $post_type );
1862  
1863      if ( empty( $post_type ) || strlen( $post_type ) > 20 ) {
1864          _doing_it_wrong( __FUNCTION__, __( 'Post type names must be between 1 and 20 characters in length.' ), '4.2.0' );
1865          return new WP_Error( 'post_type_length_invalid', __( 'Post type names must be between 1 and 20 characters in length.' ) );
1866      }
1867  
1868      $post_type_object = new WP_Post_Type( $post_type, $args );
1869      $post_type_object->add_supports();
1870      $post_type_object->add_rewrite_rules();
1871      $post_type_object->register_meta_boxes();
1872  
1873      $wp_post_types[ $post_type ] = $post_type_object;
1874  
1875      $post_type_object->add_hooks();
1876      $post_type_object->register_taxonomies();
1877  
1878      /**
1879       * Fires after a post type is registered.
1880       *
1881       * @since 3.3.0
1882       * @since 4.6.0 Converted the `$post_type` parameter to accept a WP_Post_Type object.
1883       *
1884       * @param string       $post_type        Post type.
1885       * @param WP_Post_Type $post_type_object Arguments used to register the post type.
1886       */
1887      do_action( 'registered_post_type', $post_type, $post_type_object );
1888  
1889      /**
1890       * Fires after a specific post type is registered.
1891       *
1892       * The dynamic portion of the filter name, `$post_type`, refers to the post type key.
1893       *
1894       * Possible hook names include:
1895       *
1896       *  - `registered_post_type_post`
1897       *  - `registered_post_type_page`
1898       *
1899       * @since 6.0.0
1900       *
1901       * @param string       $post_type        Post type.
1902       * @param WP_Post_Type $post_type_object Arguments used to register the post type.
1903       */
1904      do_action( "registered_post_type_{$post_type}", $post_type, $post_type_object );
1905  
1906      return $post_type_object;
1907  }
1908  
1909  /**
1910   * Unregisters a post type.
1911   *
1912   * Cannot be used to unregister built-in post types.
1913   *
1914   * @since 4.5.0
1915   *
1916   * @global array<string, string>       $post_type_meta_caps Used to store meta capabilities.
1917   * @global array<string, WP_Post_Type> $wp_post_types       List of post types.
1918   *
1919   * @param string $post_type Post type to unregister.
1920   * @return true|WP_Error True on success, WP_Error on failure or if the post type doesn't exist.
1921   */
1922  function unregister_post_type( $post_type ) {
1923      global $post_type_meta_caps, $wp_post_types;
1924  
1925      $post_type_object = get_post_type_object( $post_type );
1926      if ( ! $post_type_object ) {
1927          return new WP_Error( 'invalid_post_type', __( 'Invalid post type.' ) );
1928      }
1929  
1930      // Do not allow unregistering internal post types.
1931      if ( $post_type_object->_builtin ) {
1932          return new WP_Error( 'invalid_post_type', __( 'Unregistering a built-in post type is not allowed' ) );
1933      }
1934  
1935      $post_type_object->remove_supports();
1936      $post_type_object->remove_rewrite_rules();
1937      $post_type_object->unregister_meta_boxes();
1938      $post_type_object->remove_hooks();
1939      $post_type_object->unregister_taxonomies();
1940  
1941      unset( $wp_post_types[ $post_type ] );
1942  
1943      /*
1944       * Rebuild the meta capabilities of the post types that remain.
1945       *
1946       * They are keyed by the custom capability name, so a single entry may be owed to any
1947       * number of registered post types. Removing the entries for this post type alone could
1948       * therefore remove entries that the others still depend on.
1949       */
1950      $post_type_meta_caps = array();
1951      foreach ( $wp_post_types as $registered_post_type ) {
1952          if ( $registered_post_type->map_meta_cap ) {
1953              _post_type_meta_capabilities( get_object_vars( $registered_post_type->cap ) );
1954          }
1955      }
1956  
1957      /**
1958       * Fires after a post type was unregistered.
1959       *
1960       * @since 4.5.0
1961       *
1962       * @param string $post_type Post type key.
1963       */
1964      do_action( 'unregistered_post_type', $post_type );
1965  
1966      return true;
1967  }
1968  
1969  /**
1970   * Builds an object with all post type capabilities out of a post type object
1971   *
1972   * Post type capabilities use the 'capability_type' argument as a base, if the
1973   * capability is not set in the 'capabilities' argument array or if the
1974   * 'capabilities' argument is not supplied.
1975   *
1976   * The capability_type argument can optionally be registered as an array, with
1977   * the first value being singular and the second plural, e.g. array('story, 'stories')
1978   * Otherwise, an 's' will be added to the value for the plural form. After
1979   * registration, capability_type will always be a string of the singular value.
1980   *
1981   * By default, the following keys are accepted as part of the capabilities array:
1982   *
1983   * - edit_post, read_post, and delete_post are meta capabilities, which are then
1984   *   generally mapped to corresponding primitive capabilities depending on the
1985   *   context, which would be the post being edited/read/deleted and the user or
1986   *   role being checked. Thus these capabilities would generally not be granted
1987   *   directly to users or roles.
1988   *
1989   * - edit_posts - Controls whether objects of this post type can be edited.
1990   * - edit_others_posts - Controls whether objects of this type owned by other users
1991   *   can be edited. If the post type does not support an author, then this will
1992   *   behave like edit_posts.
1993   * - delete_posts - Controls whether objects of this post type can be deleted.
1994   * - publish_posts - Controls publishing objects of this post type.
1995   * - read_private_posts - Controls whether private objects can be read.
1996   * - create_posts - Controls whether objects of this post type can be created.
1997   *
1998   * These primitive capabilities are checked in core in various locations.
1999   * There are also six other primitive capabilities which are not referenced
2000   * directly in core, except in map_meta_cap(), which takes the three aforementioned
2001   * meta capabilities and translates them into one or more primitive capabilities
2002   * that must then be checked against the user or role, depending on the context.
2003   *
2004   * - read - Controls whether objects of this post type can be read.
2005   * - delete_private_posts - Controls whether private objects can be deleted.
2006   * - delete_published_posts - Controls whether published objects can be deleted.
2007   * - delete_others_posts - Controls whether objects owned by other users can be
2008   *   can be deleted. If the post type does not support an author, then this will
2009   *   behave like delete_posts.
2010   * - edit_private_posts - Controls whether private objects can be edited.
2011   * - edit_published_posts - Controls whether published objects can be edited.
2012   *
2013   * These additional capabilities are only used in map_meta_cap(). Thus, they are
2014   * only assigned by default if the post type is registered with the 'map_meta_cap'
2015   * argument set to true (default is false).
2016   *
2017   * @since 3.0.0
2018   * @since 5.4.0 'delete_posts' is included in default capabilities.
2019   *
2020   * @see register_post_type()
2021   * @see map_meta_cap()
2022   *
2023   * @param object $args Post type registration arguments.
2024   * @return stdClass {
2025   *     Object with all the capabilities as member variables.
2026   *
2027   *     @type string $edit_post              Capability to edit a post.
2028   *     @type string $read_post              Capability to read a post.
2029   *     @type string $delete_post            Capability to delete a post.
2030   *     @type string $edit_posts             Capability to edit posts.
2031   *     @type string $edit_others_posts      Capability to edit others' posts.
2032   *     @type string $delete_posts           Capability to delete posts.
2033   *     @type string $publish_posts          Capability to publish posts.
2034   *     @type string $read_private_posts     Capability to read private posts.
2035   *     @type string $create_posts           Capability to create posts.
2036   *     @type string $read                   Optional. Capability to read a post.
2037   *     @type string $delete_private_posts   Optional. Capability to delete private posts.
2038   *     @type string $delete_published_posts Optional. Capability to delete published posts.
2039   *     @type string $delete_others_posts    Optional. Capability to delete others' posts.
2040   *     @type string $edit_private_posts     Optional. Capability to edit private posts.
2041   *     @type string $edit_published_posts   Optional. Capability to edit published posts.
2042   * }
2043   */
2044  function get_post_type_capabilities( $args ) {
2045      if ( ! is_array( $args->capability_type ) ) {
2046          $args->capability_type = array( $args->capability_type, $args->capability_type . 's' );
2047      }
2048  
2049      // Singular base for meta capabilities, plural base for primitive capabilities.
2050      list( $singular_base, $plural_base ) = $args->capability_type;
2051  
2052      $default_capabilities = array(
2053          // Meta capabilities.
2054          'edit_post'          => 'edit_' . $singular_base,
2055          'read_post'          => 'read_' . $singular_base,
2056          'delete_post'        => 'delete_' . $singular_base,
2057          // Primitive capabilities used outside of map_meta_cap():
2058          'edit_posts'         => 'edit_' . $plural_base,
2059          'edit_others_posts'  => 'edit_others_' . $plural_base,
2060          'delete_posts'       => 'delete_' . $plural_base,
2061          'publish_posts'      => 'publish_' . $plural_base,
2062          'read_private_posts' => 'read_private_' . $plural_base,
2063      );
2064  
2065      // Primitive capabilities used within map_meta_cap():
2066      if ( $args->map_meta_cap ) {
2067          $default_capabilities_for_mapping = array(
2068              'read'                   => 'read',
2069              'delete_private_posts'   => 'delete_private_' . $plural_base,
2070              'delete_published_posts' => 'delete_published_' . $plural_base,
2071              'delete_others_posts'    => 'delete_others_' . $plural_base,
2072              'edit_private_posts'     => 'edit_private_' . $plural_base,
2073              'edit_published_posts'   => 'edit_published_' . $plural_base,
2074          );
2075          $default_capabilities             = array_merge( $default_capabilities, $default_capabilities_for_mapping );
2076      }
2077  
2078      $capabilities = array_merge( $default_capabilities, $args->capabilities );
2079  
2080      // Post creation capability simply maps to edit_posts by default:
2081      if ( ! isset( $capabilities['create_posts'] ) ) {
2082          $capabilities['create_posts'] = $capabilities['edit_posts'];
2083      }
2084  
2085      // Remember meta capabilities for future reference.
2086      if ( $args->map_meta_cap ) {
2087          _post_type_meta_capabilities( $capabilities );
2088      }
2089  
2090      return (object) $capabilities;
2091  }
2092  
2093  /**
2094   * Stores a list of post type meta caps for {@see map_meta_cap()}.
2095   *
2096   * @since 3.1.0
2097   * @since 4.5.0 The list moved to the `$post_type_meta_caps` global and the function
2098   *              no longer returns it when called without arguments.
2099   * @since 7.2.0 The `$capabilities` parameter defaults to an empty array rather than `null`.
2100   * @access private
2101   *
2102   * @global array<string, string> $post_type_meta_caps Used to store meta capabilities.
2103   *
2104   * @param array<string, string> $capabilities Map of core meta capability name to the custom
2105   *                                            capability name it is registered under.
2106   */
2107  function _post_type_meta_capabilities( $capabilities = array() ): void {
2108      global $post_type_meta_caps;
2109  
2110      foreach ( $capabilities as $core => $custom ) {
2111          if ( in_array( $core, array( 'read_post', 'delete_post', 'edit_post' ), true ) ) {
2112              $post_type_meta_caps[ $custom ] = $core;
2113          }
2114      }
2115  }
2116  
2117  /**
2118   * Builds an object with all post type labels out of a post type object.
2119   *
2120   * Note: To set labels used in post type admin notices, see the {@see 'post_updated_messages'} filter.
2121   *
2122   * @since 3.0.0
2123   * @since 4.3.0 Added the `featured_image`, `set_featured_image`, `remove_featured_image`,
2124   *              and `use_featured_image` labels.
2125   * @since 4.4.0 Added the `archives`, `insert_into_item`, `uploaded_to_this_item`, `filter_items_list`,
2126   *              `items_list_navigation`, and `items_list` labels.
2127   * @since 4.6.0 Converted the `$post_type` parameter to accept a `WP_Post_Type` object.
2128   * @since 4.7.0 Added the `view_items` and `attributes` labels.
2129   * @since 5.0.0 Added the `item_published`, `item_published_privately`, `item_reverted_to_draft`,
2130   *              `item_scheduled`, and `item_updated` labels.
2131   * @since 5.7.0 Added the `filter_by_date` label.
2132   * @since 5.8.0 Added the `item_link` and `item_link_description` labels.
2133   * @since 6.3.0 Added the `item_trashed` label.
2134   * @since 6.4.0 Changed default values for the `add_new` label to include the type of content.
2135   *              This matches `add_new_item` and provides more context for better accessibility.
2136   * @since 6.6.0 Added the `template_name` label.
2137   * @since 6.7.0 Restored pre-6.4.0 defaults for the `add_new` label and updated documentation.
2138   *              Updated core usage to reference `add_new_item`.
2139   *
2140   * @access private
2141   *
2142   * @param object|WP_Post_Type $post_type_object Post type object.
2143   * @return stdClass {
2144   *     Post type labels object. The first default value is for non-hierarchical post types
2145   *     (like posts) and the second one is for hierarchical post types (like pages).
2146   *
2147   *     @type string      $name                     General name for the post type, usually plural. The same and
2148   *                                                 overridden by `$post_type_object->label`.
2149   *                                                 Default is 'Posts' / 'Pages'.
2150   *     @type string      $singular_name            Name for one object of this post type. Default is 'Post' / 'Page'.
2151   *     @type string      $add_new                  Label for adding a new item. Default is 'Add Post' / 'Add Page'.
2152   *     @type string      $add_new_item             Label for adding a new singular item.
2153   *                                                 Default is 'Add Post' / 'Add Page'.
2154   *     @type string      $edit_item                Label for editing a singular item.
2155   *                                                 Default is 'Edit Post' / 'Edit Page'.
2156   *     @type string      $new_item                 Label for the new item page title.
2157   *                                                 Default is 'New Post' / 'New Page'.
2158   *     @type string      $view_item                Label for viewing a singular item.
2159   *                                                 Default is 'View Post' / 'View Page'.
2160   *     @type string      $view_items               Label for viewing post type archives.
2161   *                                                 Default is 'View Posts' / 'View Pages'.
2162   *     @type string      $search_items             Label for searching plural items.
2163   *                                                 Default is 'Search Posts' / 'Search Pages'.
2164   *     @type string      $not_found                Label used when no items are found.
2165   *                                                 Default is 'No posts found' / 'No pages found'.
2166   *     @type string      $not_found_in_trash       Label used when no items are in the Trash.
2167   *                                                 Default is 'No posts found in Trash' / 'No pages found in Trash'.
2168   *     @type string|null $parent_item_colon        Label used to prefix parents of hierarchical items. Not used on
2169   *                                                 non-hierarchical post types.
2170   *                                                 Default is 'Parent Page:'.
2171   *     @type string      $all_items                Label to signify all items in a submenu link.
2172   *                                                 Default is 'All Posts' / 'All Pages'.
2173   *     @type string      $archives                 Label for archives in nav menus.
2174   *                                                 Default is 'Post Archives' / 'Page Archives'.
2175   *     @type string      $attributes               Label for the attributes meta box.
2176   *                                                 Default is 'Post Attributes' / 'Page Attributes'.
2177   *     @type string      $insert_into_item         Label for the media frame button.
2178   *                                                 Default is 'Insert into post' / 'Insert into page'.
2179   *     @type string      $uploaded_to_this_item    Label for the media frame filter.
2180   *                                                 Default is 'Uploaded to this post' / 'Uploaded to this page'.
2181   *     @type string      $featured_image           Label for the featured image meta box title.
2182   *                                                 Default is 'Featured image'.
2183   *     @type string      $set_featured_image       Label for setting the featured image.
2184   *                                                 Default is 'Set featured image'.
2185   *     @type string      $remove_featured_image    Label for removing the featured image.
2186   *                                                 Default is 'Remove featured image'.
2187   *     @type string      $use_featured_image       Label in the media frame for using a featured image.
2188   *                                                 Default is 'Use as featured image'.
2189   *     @type string      $menu_name                Label for the menu name. Default is the same as `name`.
2190   *     @type string      $name_admin_bar           Label for the object name in the admin bar.
2191   *                                                 Default is the value of `singular_name` in the given labels, or the
2192   *                                                 post type key.
2193   *     @type string      $filter_items_list        Label for the table views hidden heading.
2194   *                                                 Default is 'Filter posts list' / 'Filter pages list'.
2195   *     @type string      $filter_by_date           Label for the date filter in list tables.
2196   *                                                 Default is 'Filter by date'.
2197   *     @type string      $items_list_navigation    Label for the table pagination hidden heading.
2198   *                                                 Default is 'Posts list navigation' / 'Pages list navigation'.
2199   *     @type string      $items_list               Label for the table hidden heading.
2200   *                                                 Default is 'Posts list' / 'Pages list'.
2201   *     @type string      $item_published           Label used when an item is published.
2202   *                                                 Default is 'Post published.' / 'Page published.'
2203   *     @type string      $item_published_privately Label used when an item is published with private visibility.
2204   *                                                 Default is 'Post published privately.' / 'Page published privately.'
2205   *     @type string      $item_reverted_to_draft   Label used when an item is switched to a draft.
2206   *                                                 Default is 'Post reverted to draft.' / 'Page reverted to draft.'
2207   *     @type string      $item_trashed             Label used when an item is moved to Trash.
2208   *                                                 Default is 'Post trashed.' / 'Page trashed.'
2209   *     @type string      $item_scheduled           Label used when an item is scheduled for publishing.
2210   *                                                 Default is 'Post scheduled.' / 'Page scheduled.'
2211   *     @type string      $item_updated             Label used when an item is updated.
2212   *                                                 Default is 'Post updated.' / 'Page updated.'
2213   *     @type string      $item_link                Title for a navigation link block variation.
2214   *                                                 Default is 'Post Link' / 'Page Link'.
2215   *     @type string      $item_link_description    Description for a navigation link block variation.
2216   *                                                 Default is 'A link to a post.' / 'A link to a page.'
2217   *     @type string      $template_name            Label for the single item template. Only set when the post type is
2218   *                                                 given a `singular_name` label.
2219   *                                                 Default is 'Single item: ' followed by the singular name.
2220   * }
2221   */
2222  function get_post_type_labels( $post_type_object ) {
2223      $nohier_vs_hier_defaults = WP_Post_Type::get_default_labels();
2224  
2225      $nohier_vs_hier_defaults['menu_name'] = $nohier_vs_hier_defaults['name'];
2226  
2227      $labels = _get_custom_object_labels( $post_type_object, $nohier_vs_hier_defaults );
2228  
2229      if ( ! isset( $post_type_object->labels->template_name ) && isset( $post_type_object->labels->singular_name ) ) {
2230              /* translators: %s: Post type name. */
2231              $labels->template_name = sprintf( __( 'Single item: %s' ), $post_type_object->labels->singular_name );
2232      }
2233  
2234      $post_type = $post_type_object->name;
2235  
2236      $default_labels = clone $labels;
2237  
2238      /**
2239       * Filters the labels of a specific post type.
2240       *
2241       * The dynamic portion of the hook name, `$post_type`, refers to
2242       * the post type slug.
2243       *
2244       * Possible hook names include:
2245       *
2246       *  - `post_type_labels_post`
2247       *  - `post_type_labels_page`
2248       *  - `post_type_labels_attachment`
2249       *
2250       * @since 3.5.0
2251       *
2252       * @see get_post_type_labels() for the full list of labels.
2253       *
2254       * @param object $labels Object with labels for the post type as member variables.
2255       */
2256      $labels = apply_filters( "post_type_labels_{$post_type}", $labels );
2257  
2258      // Ensure that the filtered labels contain all required default values.
2259      $labels = (object) array_merge( (array) $default_labels, (array) $labels );
2260  
2261      return $labels;
2262  }
2263  
2264  /**
2265   * Builds an object with custom-something object (post type, taxonomy) labels
2266   * out of a custom-something object
2267   *
2268   * @since 3.0.0
2269   * @access private
2270   *
2271   * @param object $data_object             A custom-something object.
2272   * @param array  $nohier_vs_hier_defaults Hierarchical vs non-hierarchical default labels.
2273   * @return object Object containing labels for the given custom-something object.
2274   */
2275  function _get_custom_object_labels( $data_object, $nohier_vs_hier_defaults ) {
2276      $data_object->labels = (array) $data_object->labels;
2277  
2278      if ( isset( $data_object->label ) && empty( $data_object->labels['name'] ) ) {
2279          $data_object->labels['name'] = $data_object->label;
2280      }
2281  
2282      if ( ! isset( $data_object->labels['singular_name'] ) && isset( $data_object->labels['name'] ) ) {
2283          $data_object->labels['singular_name'] = $data_object->labels['name'];
2284      }
2285  
2286      if ( ! isset( $data_object->labels['name_admin_bar'] ) ) {
2287          $data_object->labels['name_admin_bar'] = $data_object->labels['singular_name'] ?? $data_object->name;
2288      }
2289  
2290      if ( ! isset( $data_object->labels['menu_name'] ) && isset( $data_object->labels['name'] ) ) {
2291          $data_object->labels['menu_name'] = $data_object->labels['name'];
2292      }
2293  
2294      if ( ! isset( $data_object->labels['all_items'] ) && isset( $data_object->labels['menu_name'] ) ) {
2295          $data_object->labels['all_items'] = $data_object->labels['menu_name'];
2296      }
2297  
2298      if ( ! isset( $data_object->labels['archives'] ) && isset( $data_object->labels['all_items'] ) ) {
2299          $data_object->labels['archives'] = $data_object->labels['all_items'];
2300      }
2301  
2302      $defaults = array();
2303      foreach ( $nohier_vs_hier_defaults as $key => $value ) {
2304          $defaults[ $key ] = $data_object->hierarchical ? $value[1] : $value[0];
2305      }
2306  
2307      $labels              = array_merge( $defaults, $data_object->labels );
2308      $data_object->labels = (object) $data_object->labels;
2309  
2310      return (object) $labels;
2311  }
2312  
2313  /**
2314   * Adds submenus for post types.
2315   *
2316   * @access private
2317   * @since 3.1.0
2318   */
2319  function _add_post_type_submenus() {
2320      foreach ( get_post_types( array( 'show_ui' => true ) ) as $ptype ) {
2321          $ptype_obj = get_post_type_object( $ptype );
2322          // Sub-menus only.
2323          if ( ! $ptype_obj->show_in_menu || true === $ptype_obj->show_in_menu ) {
2324              continue;
2325          }
2326          add_submenu_page( $ptype_obj->show_in_menu, $ptype_obj->labels->name, $ptype_obj->labels->all_items, $ptype_obj->cap->edit_posts, "edit.php?post_type=$ptype" );
2327      }
2328  }
2329  
2330  /**
2331   * Registers support of certain features for a post type.
2332   *
2333   * All core features are directly associated with a functional area of the edit
2334   * screen, such as the editor or a meta box. Features include: 'title', 'editor',
2335   * 'comments', 'revisions', 'trackbacks', 'author', 'excerpt', 'page-attributes',
2336   * 'thumbnail', 'custom-fields', and 'post-formats'.
2337   *
2338   * Additionally, the 'revisions' feature dictates whether the post type will
2339   * store revisions, the 'autosave' feature dictates whether the post type
2340   * will be autosaved, and the 'comments' feature dictates whether the comments
2341   * count will show on the edit screen.
2342   *
2343   * A third, optional parameter can also be passed along with a feature to provide
2344   * additional information about supporting that feature.
2345   *
2346   * Example usage:
2347   *
2348   *     add_post_type_support( 'my_post_type', 'comments' );
2349   *     add_post_type_support( 'my_post_type', array(
2350   *         'author', 'excerpt',
2351   *     ) );
2352   *     add_post_type_support( 'my_post_type', 'my_feature', array(
2353   *         'field' => 'value',
2354   *     ) );
2355   *
2356   * @since 3.0.0
2357   * @since 5.3.0 Formalized the existing and already documented `...$args` parameter
2358   *              by adding it to the function signature.
2359   *
2360   * @global array $_wp_post_type_features
2361   *
2362   * @param string       $post_type The post type for which to add the feature.
2363   * @param string|array $feature   The feature being added, accepts an array of
2364   *                                feature strings or a single string.
2365   * @param mixed        ...$args   Optional extra arguments to pass along with certain features.
2366   */
2367  function add_post_type_support( $post_type, $feature, ...$args ) {
2368      global $_wp_post_type_features;
2369  
2370      $features = (array) $feature;
2371      foreach ( $features as $feature ) {
2372          if ( $args ) {
2373              $_wp_post_type_features[ $post_type ][ $feature ] = $args;
2374          } else {
2375              $_wp_post_type_features[ $post_type ][ $feature ] = true;
2376          }
2377      }
2378  }
2379  
2380  /**
2381   * Removes support for a feature from a post type.
2382   *
2383   * @since 3.0.0
2384   *
2385   * @global array $_wp_post_type_features
2386   *
2387   * @param string $post_type The post type for which to remove the feature.
2388   * @param string $feature   The feature being removed.
2389   */
2390  function remove_post_type_support( $post_type, $feature ) {
2391      global $_wp_post_type_features;
2392  
2393      unset( $_wp_post_type_features[ $post_type ][ $feature ] );
2394  }
2395  
2396  /**
2397   * Gets all the post type features
2398   *
2399   * @since 3.4.0
2400   *
2401   * @global array $_wp_post_type_features
2402   *
2403   * @param string $post_type The post type.
2404   * @return array Post type supports list.
2405   */
2406  function get_all_post_type_supports( $post_type ) {
2407      global $_wp_post_type_features;
2408      return $_wp_post_type_features[ $post_type ] ?? array();
2409  }
2410  
2411  /**
2412   * Checks a post type's support for a given feature.
2413   *
2414   * @since 3.0.0
2415   *
2416   * @global array $_wp_post_type_features
2417   *
2418   * @param string $post_type The post type being checked.
2419   * @param string $feature   The feature being checked.
2420   * @return bool Whether the post type supports the given feature.
2421   */
2422  function post_type_supports( $post_type, $feature ) {
2423      global $_wp_post_type_features;
2424  
2425      return ( isset( $_wp_post_type_features[ $post_type ][ $feature ] ) );
2426  }
2427  /**
2428   * Retrieves a list of post type names that support a specific feature.
2429   *
2430   * @since 4.5.0
2431   *
2432   * @global array $_wp_post_type_features Post type features
2433   *
2434   * @param array|string $feature  Single feature or an array of features the post types should support.
2435   * @param string       $operator Optional. The logical operation to perform. 'or' means
2436   *                               only one element from the array needs to match; 'and'
2437   *                               means all elements must match; 'not' means no elements may
2438   *                               match. Default 'and'.
2439   * @return string[] A list of post type names.
2440   */
2441  function get_post_types_by_support( $feature, $operator = 'and' ) {
2442      global $_wp_post_type_features;
2443  
2444      $features = array_fill_keys( (array) $feature, true );
2445  
2446      return array_keys( wp_filter_object_list( $_wp_post_type_features, $features, $operator ) );
2447  }
2448  
2449  /**
2450   * Updates the post type for the post ID.
2451   *
2452   * The page or post cache will be cleaned for the post ID.
2453   *
2454   * @since 2.5.0
2455   *
2456   * @global wpdb $wpdb WordPress database abstraction object.
2457   *
2458   * @param int    $post_id   Optional. Post ID to change post type. Default 0.
2459   * @param string $post_type Optional. Post type. Accepts 'post' or 'page' to
2460   *                          name a few. Default 'post'.
2461   * @return int|false Amount of rows changed. Should be 1 for success and 0 for failure.
2462   */
2463  function set_post_type( $post_id = 0, $post_type = 'post' ) {
2464      global $wpdb;
2465  
2466      $post_type = sanitize_post_field( 'post_type', $post_type, $post_id, 'db' );
2467      $return    = $wpdb->update( $wpdb->posts, array( 'post_type' => $post_type ), array( 'ID' => $post_id ) );
2468  
2469      clean_post_cache( $post_id );
2470  
2471      return $return;
2472  }
2473  
2474  /**
2475   * Determines whether a post type is considered "viewable".
2476   *
2477   * For built-in post types such as posts and pages, the 'public' value will be evaluated.
2478   * For all others, the 'publicly_queryable' value will be used.
2479   *
2480   * @since 4.4.0
2481   * @since 4.5.0 Added the ability to pass a post type name in addition to object.
2482   * @since 4.6.0 Converted the `$post_type` parameter to accept a `WP_Post_Type` object.
2483   * @since 5.9.0 Added `is_post_type_viewable` hook to filter the result.
2484   *
2485   * @param string|WP_Post_Type $post_type Post type name or object.
2486   * @return bool Whether the post type should be considered viewable.
2487   */
2488  function is_post_type_viewable( $post_type ) {
2489      if ( is_scalar( $post_type ) ) {
2490          $post_type = get_post_type_object( $post_type );
2491  
2492          if ( ! $post_type ) {
2493              return false;
2494          }
2495      }
2496  
2497      if ( ! is_object( $post_type ) ) {
2498          return false;
2499      }
2500  
2501      $is_viewable = $post_type->publicly_queryable || ( $post_type->_builtin && $post_type->public );
2502  
2503      /**
2504       * Filters whether a post type is considered "viewable".
2505       *
2506       * The returned filtered value must be a boolean type to ensure
2507       * `is_post_type_viewable()` only returns a boolean. This strictness
2508       * is by design to maintain backwards-compatibility and guard against
2509       * potential type errors in PHP 8.1+. Non-boolean values (even falsey
2510       * and truthy values) will result in the function returning false.
2511       *
2512       * @since 5.9.0
2513       *
2514       * @param bool         $is_viewable Whether the post type is "viewable" (strict type).
2515       * @param WP_Post_Type $post_type   Post type object.
2516       */
2517      return true === apply_filters( 'is_post_type_viewable', $is_viewable, $post_type );
2518  }
2519  
2520  /**
2521   * Determines whether a post status is considered "viewable".
2522   *
2523   * For built-in post statuses such as publish and private, the 'public' value will be evaluated.
2524   * For all others, the 'publicly_queryable' value will be used.
2525   *
2526   * @since 5.7.0
2527   * @since 5.9.0 Added `is_post_status_viewable` hook to filter the result.
2528   *
2529   * @param string|stdClass $post_status Post status name or object.
2530   * @return bool Whether the post status should be considered viewable.
2531   */
2532  function is_post_status_viewable( $post_status ) {
2533      if ( is_scalar( $post_status ) ) {
2534          if ( ! is_string( $post_status ) ) {
2535              return false;
2536          }
2537  
2538          $post_status = get_post_status_object( $post_status );
2539  
2540          if ( ! $post_status ) {
2541              return false;
2542          }
2543      }
2544  
2545      if (
2546          ! is_object( $post_status ) ||
2547          $post_status->internal ||
2548          $post_status->protected
2549      ) {
2550          return false;
2551      }
2552  
2553      $is_viewable = $post_status->publicly_queryable || ( $post_status->_builtin && $post_status->public );
2554  
2555      /**
2556       * Filters whether a post status is considered "viewable".
2557       *
2558       * The returned filtered value must be a boolean type to ensure
2559       * `is_post_status_viewable()` only returns a boolean. This strictness
2560       * is by design to maintain backwards-compatibility and guard against
2561       * potential type errors in PHP 8.1+. Non-boolean values (even falsey
2562       * and truthy values) will result in the function returning false.
2563       *
2564       * @since 5.9.0
2565       *
2566       * @param bool     $is_viewable Whether the post status is "viewable" (strict type).
2567       * @param stdClass $post_status Post status object.
2568       */
2569      return true === apply_filters( 'is_post_status_viewable', $is_viewable, $post_status );
2570  }
2571  
2572  /**
2573   * Determines whether a post is publicly viewable.
2574   *
2575   * Posts are considered publicly viewable if both the post status and post type
2576   * are viewable.
2577   *
2578   * @since 5.7.0
2579   *
2580   * @param int|WP_Post|null $post Optional. Post ID or post object. Defaults to global $post.
2581   * @return bool Whether the post is publicly viewable.
2582   */
2583  function is_post_publicly_viewable( $post = null ) {
2584      $post = get_post( $post );
2585  
2586      if ( ! $post ) {
2587          return false;
2588      }
2589  
2590      $post_type   = get_post_type( $post );
2591      $post_status = get_post_status( $post );
2592  
2593      return is_post_type_viewable( $post_type ) && is_post_status_viewable( $post_status );
2594  }
2595  
2596  /**
2597   * Determines whether a post is embeddable.
2598   *
2599   * @since 6.8.0
2600   *
2601   * @param int|WP_Post|null $post Optional. Post ID or `WP_Post` object. Defaults to global $post.
2602   * @return bool Whether the post should be considered embeddable.
2603   */
2604  function is_post_embeddable( $post = null ) {
2605      $post = get_post( $post );
2606  
2607      if ( ! $post ) {
2608          return false;
2609      }
2610  
2611      $post_type = get_post_type_object( $post->post_type );
2612  
2613      if ( ! $post_type ) {
2614          return false;
2615      }
2616  
2617      $is_embeddable = $post_type->embeddable;
2618  
2619      /**
2620       * Filter whether a post is embeddable.
2621       *
2622       * @since 6.8.0
2623       *
2624       * @param bool    $is_embeddable Whether the post is embeddable.
2625       * @param WP_Post $post          Post object.
2626       */
2627      return apply_filters( 'is_post_embeddable', $is_embeddable, $post );
2628  }
2629  
2630  /**
2631   * Retrieves an array of the latest posts, or posts matching the given criteria.
2632   *
2633   * For more information on the accepted arguments, see the
2634   * {@link https://developer.wordpress.org/reference/classes/wp_query/
2635   * WP_Query} documentation in the Developer Handbook.
2636   *
2637   * The `$ignore_sticky_posts` and `$no_found_rows` arguments are ignored by
2638   * this function and both are set to `true`.
2639   *
2640   * The defaults are as follows:
2641   *
2642   * @since 1.2.0
2643   *
2644   * @see WP_Query
2645   * @see WP_Query::parse_query()
2646   *
2647   * @param array|string $args {
2648   *     Optional. Array or query string of arguments to retrieve posts.
2649   *     See WP_Query::parse_query() for all available arguments.
2650   *
2651   *     @type int        $numberposts      Total number of posts to retrieve. Is an alias of `$posts_per_page`
2652   *                                        in WP_Query. Accepts -1 for all. Default 5.
2653   *     @type int|string $category         Category ID or comma-separated list of IDs (this or any children).
2654   *                                        Is an alias of `$cat` in WP_Query. Default 0.
2655   *     @type int[]      $include          An array of post IDs to retrieve, sticky posts will be included.
2656   *                                        Is an alias of `$post__in` in WP_Query. Default empty array.
2657   *     @type int[]      $exclude          An array of post IDs not to retrieve. Default empty array.
2658   *     @type bool       $suppress_filters Whether to suppress filters. Default true.
2659   * }
2660   * @return WP_Post[]|int[] Array of post objects or post IDs.
2661   *
2662   * @phpstan-return (
2663   *     $args is array{ fields: 'ids', ... }
2664   *         ? int[]
2665   *         : ( $args is array{ fields: 'id=>parent', ... }
2666   *             ? array<int, int>
2667   *             : WP_Post[] )
2668   * )
2669   */
2670  function get_posts( $args = null ) {
2671      $defaults = array(
2672          'numberposts'      => 5,
2673          'category'         => 0,
2674          'orderby'          => 'date',
2675          'order'            => 'DESC',
2676          'include'          => array(),
2677          'exclude'          => array(),
2678          'meta_key'         => '',
2679          'meta_value'       => '',
2680          'post_type'        => 'post',
2681          'suppress_filters' => true,
2682      );
2683  
2684      $parsed_args = wp_parse_args( $args, $defaults );
2685      if ( empty( $parsed_args['post_status'] ) ) {
2686          $parsed_args['post_status'] = ( 'attachment' === $parsed_args['post_type'] ) ? 'inherit' : 'publish';
2687      }
2688      if ( ! empty( $parsed_args['numberposts'] ) && empty( $parsed_args['posts_per_page'] ) ) {
2689          $parsed_args['posts_per_page'] = $parsed_args['numberposts'];
2690      }
2691      if ( ! empty( $parsed_args['category'] ) ) {
2692          $parsed_args['cat'] = $parsed_args['category'];
2693      }
2694      if ( ! empty( $parsed_args['include'] ) ) {
2695          $incposts                      = wp_parse_id_list( $parsed_args['include'] );
2696          $parsed_args['posts_per_page'] = count( $incposts );  // Only the number of posts included.
2697          $parsed_args['post__in']       = $incposts;
2698      } elseif ( ! empty( $parsed_args['exclude'] ) ) {
2699          $parsed_args['post__not_in'] = wp_parse_id_list( $parsed_args['exclude'] );
2700      }
2701  
2702      $parsed_args['ignore_sticky_posts'] = true;
2703      $parsed_args['no_found_rows']       = true;
2704  
2705      $get_posts = new WP_Query();
2706      return $get_posts->query( $parsed_args );
2707  }
2708  
2709  //
2710  // Post meta functions.
2711  //
2712  
2713  /**
2714   * Adds a meta field to the given post.
2715   *
2716   * Post meta data is called "Custom Fields" on the Administration Screen.
2717   *
2718   * For historical reasons both the meta key and the meta value are expected to be "slashed" (slashes escaped) on input.
2719   *
2720   * @since 1.5.0
2721   *
2722   * @param int    $post_id    Post ID.
2723   * @param string $meta_key   Metadata name.
2724   * @param mixed  $meta_value Metadata value. Arrays and objects are stored as serialized data and
2725   *                           will be returned as the same type when retrieved. Other data types will
2726   *                           be stored as strings in the database:
2727   *                           - false is stored and retrieved as an empty string ('')
2728   *                           - true is stored and retrieved as '1'
2729   *                           - numbers (both integer and float) are stored and retrieved as strings
2730   *                           Must be serializable if non-scalar.
2731   * @param bool   $unique     Optional. Whether the same key should not be added.
2732   *                           Default false.
2733   * @return int|false Meta ID on success, false on failure.
2734   */
2735  function add_post_meta( $post_id, $meta_key, $meta_value, $unique = false ) {
2736      // Make sure meta is added to the post, not a revision.
2737      $the_post = wp_is_post_revision( $post_id );
2738      if ( $the_post ) {
2739          $post_id = $the_post;
2740      }
2741  
2742      return add_metadata( 'post', $post_id, $meta_key, $meta_value, $unique );
2743  }
2744  
2745  /**
2746   * Deletes a post meta field for the given post ID.
2747   *
2748   * You can match based on the key, or key and value. Removing based on key and
2749   * value, will keep from removing duplicate metadata with the same key. It also
2750   * allows removing all metadata matching the key, if needed.
2751   *
2752   * For historical reasons both the meta key and the meta value are expected to be "slashed" (slashes escaped) on input.
2753   *
2754   * @since 1.5.0
2755   *
2756   * @param int    $post_id    Post ID.
2757   * @param string $meta_key   Metadata name.
2758   * @param mixed  $meta_value Optional. Metadata value. If provided,
2759   *                           rows will only be removed that match the value.
2760   *                           Must be serializable if non-scalar. Default empty.
2761   * @return bool True on success, false on failure.
2762   *
2763   * @phpstan-param positive-int $post_id
2764   */
2765  function delete_post_meta( $post_id, $meta_key, $meta_value = '' ) {
2766      // Make sure meta is deleted from the post, not from a revision.
2767      $the_post = wp_is_post_revision( $post_id );
2768      if ( $the_post ) {
2769          $post_id = $the_post;
2770      }
2771  
2772      return delete_metadata( 'post', $post_id, $meta_key, $meta_value );
2773  }
2774  
2775  /**
2776   * Retrieves a post meta field for the given post ID.
2777   *
2778   * @since 1.5.0
2779   *
2780   * @param int    $post_id Post ID.
2781   * @param string $key     Optional. The meta key to retrieve. By default,
2782   *                        returns data for all keys. Default empty.
2783   * @param bool   $single  Optional. Whether to return a single value.
2784   *                        This parameter has no effect if `$key` is not specified.
2785   *                        Default false.
2786   * @return mixed An array of values if `$single` is false.
2787   *               The value of the meta field if `$single` is true.
2788   *               False for an invalid `$post_id` (non-numeric, zero, or negative value).
2789   *               An empty array if a valid but non-existing post ID is passed and `$single` is false.
2790   *               An empty string if a valid but non-existing post ID is passed and `$single` is true.
2791   *               Note: Non-serialized values are returned as strings:
2792   *               - false values are returned as empty strings ('')
2793   *               - true values are returned as '1'
2794   *               - numbers (both integer and float) are returned as strings
2795   *               Arrays and objects retain their original type.
2796   *               These conversions apply to stored values. A default value registered
2797   *               with {@see register_meta()} is never stored, so it is returned with
2798   *               the type it was registered with, which may be an integer, float, or
2799   *               boolean.
2800   *
2801   * @phpstan-return (
2802   *     $key is ''|'0'
2803   *         ? array<array-key, list<string>>|false
2804   *         : ( $single is true
2805   *             ? mixed
2806   *             : list<mixed>|false )
2807   * )
2808   */
2809  function get_post_meta( $post_id, $key = '', $single = false ) {
2810      return get_metadata( 'post', $post_id, $key, $single );
2811  }
2812  
2813  /**
2814   * Updates a post meta field based on the given post ID.
2815   *
2816   * Use the `$prev_value` parameter to differentiate between meta fields with the
2817   * same key and post ID.
2818   *
2819   * If the meta field for the post does not exist, it will be added and its ID returned.
2820   *
2821   * Can be used in place of add_post_meta().
2822   *
2823   * For historical reasons both the meta key and the meta value are expected to be "slashed" (slashes escaped) on input.
2824   *
2825   * @since 1.5.0
2826   *
2827   * @param int    $post_id    Post ID.
2828   * @param string $meta_key   Metadata key.
2829   * @param mixed  $meta_value Metadata value. Must be serializable if non-scalar.
2830   * @param mixed  $prev_value Optional. Previous value to check before updating.
2831   *                           If specified, only update existing metadata entries with
2832   *                           this value. Otherwise, update all entries. Default empty.
2833   * @return int|bool Meta ID if the key didn't exist, true on successful update,
2834   *                  false on failure or if the value passed to the function
2835   *                  is the same as the one that is already in the database.
2836   */
2837  function update_post_meta( $post_id, $meta_key, $meta_value, $prev_value = '' ) {
2838      // Make sure meta is updated for the post, not for a revision.
2839      $the_post = wp_is_post_revision( $post_id );
2840      if ( $the_post ) {
2841          $post_id = $the_post;
2842      }
2843  
2844      return update_metadata( 'post', $post_id, $meta_key, $meta_value, $prev_value );
2845  }
2846  
2847  /**
2848   * Deletes everything from post meta matching the given meta key.
2849   *
2850   * @since 2.3.0
2851   *
2852   * @param string $post_meta_key Key to search for when deleting.
2853   * @return bool Whether the post meta key was deleted from the database.
2854   */
2855  function delete_post_meta_by_key( $post_meta_key ) {
2856      return delete_metadata( 'post', 0, $post_meta_key, '', true );
2857  }
2858  
2859  /**
2860   * Registers a meta key for posts.
2861   *
2862   * @since 4.9.8
2863   *
2864   * @param string $post_type Post type to register a meta key for. Pass an empty string
2865   *                          to register the meta key across all existing post types.
2866   * @param string $meta_key  The meta key to register.
2867   * @param array  $args      Data used to describe the meta key when registered. See
2868   *                          {@see register_meta()} for a list of supported arguments.
2869   * @return bool True if the meta key was successfully registered, false if not.
2870   */
2871  function register_post_meta( $post_type, $meta_key, array $args ) {
2872      $args['object_subtype'] = $post_type;
2873  
2874      return register_meta( 'post', $meta_key, $args );
2875  }
2876  
2877  /**
2878   * Unregisters a meta key for posts.
2879   *
2880   * @since 4.9.8
2881   *
2882   * @param string $post_type Post type the meta key is currently registered for. Pass
2883   *                          an empty string if the meta key is registered across all
2884   *                          existing post types.
2885   * @param string $meta_key  The meta key to unregister.
2886   * @return bool True on success, false if the meta key was not previously registered.
2887   */
2888  function unregister_post_meta( $post_type, $meta_key ) {
2889      return unregister_meta_key( 'post', $meta_key, $post_type );
2890  }
2891  
2892  /**
2893   * Retrieves post meta fields, based on post ID.
2894   *
2895   * The post meta fields are retrieved from the cache where possible,
2896   * so the function is optimized to be called more than once.
2897   *
2898   * @since 1.2.0
2899   *
2900   * @param int $post_id Optional. Post ID. Default is the ID of the global `$post`.
2901   * @return array<string|int, array<int, string>>|false Array of post meta values keyed by meta key, or false on failure.
2902   *                                                     Post meta values will always be strings, even for values which
2903   *                                                     would otherwise be retrieved individually as arrays or objects
2904   *                                                     via {@see get_post_meta()}. A meta key which is a numeric string
2905   *                                                     is keyed by the equivalent integer, as PHP casts such array keys.
2906   *                                                     An empty array is returned if the post has no post meta.
2907   *
2908   * @phpstan-return array<array-key, list<string>>|false
2909   */
2910  function get_post_custom( $post_id = 0 ) {
2911      $post_id = absint( $post_id );
2912  
2913      if ( ! $post_id ) {
2914          $post_id = get_the_ID();
2915          if ( false === $post_id ) {
2916              return false;
2917          }
2918      }
2919  
2920      return get_post_meta( $post_id );
2921  }
2922  
2923  /**
2924   * Retrieves meta field names for a post.
2925   *
2926   * If there are no meta fields, then nothing (null) will be returned.
2927   *
2928   * @since 1.2.0
2929   *
2930   * @param int $post_id Optional. Post ID. Default is the ID of the global `$post`.
2931   * @return array<string|int>|null Array of the meta field keys, if retrieved. Null if the post has no
2932   *                                post meta, or if the post meta could not be retrieved. A key which is
2933   *                                a numeric string is returned as the equivalent integer.
2934   *
2935   * @phpstan-return non-empty-list<array-key>|null
2936   */
2937  function get_post_custom_keys( $post_id = 0 ) {
2938      $custom = get_post_custom( $post_id );
2939  
2940      if ( ! is_array( $custom ) ) {
2941          return null;
2942      }
2943  
2944      $keys = array_keys( $custom );
2945      if ( $keys ) {
2946          return $keys;
2947      }
2948      return null;
2949  }
2950  
2951  /**
2952   * Retrieves values for a custom post field.
2953   *
2954   * The parameters must not be considered optional. All of the post meta fields
2955   * will be retrieved and only the meta field key values returned.
2956   *
2957   * @since 1.2.0
2958   *
2959   * @param string $key     Optional. Meta field key. Default empty.
2960   * @param int    $post_id Optional. Post ID. Default is the ID of the global `$post`.
2961   * @return string[]|null Meta field values. Null if `$key` is not specified, if the post has no
2962   *                       meta for that key, or if the post meta could not be retrieved.
2963   *                       Values are always strings, as described for {@see get_post_custom()}.
2964   *
2965   * @phpstan-return ( $key is ''|'0' ? null : list<string>|null )
2966   */
2967  function get_post_custom_values( $key = '', $post_id = 0 ) {
2968      if ( ! $key ) {
2969          return null;
2970      }
2971  
2972      $custom = get_post_custom( $post_id );
2973  
2974      return $custom[ $key ] ?? null;
2975  }
2976  
2977  /**
2978   * Determines whether a post is sticky.
2979   *
2980   * Sticky posts should remain at the top of The Loop. If the post ID is not
2981   * given, then The Loop ID for the current post will be used.
2982   *
2983   * For more information on this and similar theme functions, check out
2984   * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
2985   * Conditional Tags} article in the Theme Developer Handbook.
2986   *
2987   * @since 2.7.0
2988   *
2989   * @param int $post_id Optional. Post ID. Default is the ID of the global `$post`.
2990   * @return bool Whether post is sticky.
2991   */
2992  function is_sticky( $post_id = 0 ) {
2993      $post_id = absint( $post_id );
2994  
2995      if ( ! $post_id ) {
2996          $post_id = get_the_ID();
2997      }
2998  
2999      $stickies = get_option( 'sticky_posts' );
3000  
3001      if ( is_array( $stickies ) ) {
3002          $stickies  = array_map( 'intval', $stickies );
3003          $is_sticky = in_array( $post_id, $stickies, true );
3004      } else {
3005          $is_sticky = false;
3006      }
3007  
3008      /**
3009       * Filters whether a post is sticky.
3010       *
3011       * @since 5.3.0
3012       *
3013       * @param bool $is_sticky Whether a post is sticky.
3014       * @param int  $post_id   Post ID.
3015       */
3016      return apply_filters( 'is_sticky', $is_sticky, $post_id );
3017  }
3018  
3019  /**
3020   * Sanitizes every post field.
3021   *
3022   * If the context is 'raw', then the post object or array will get minimal
3023   * sanitization of the integer fields.
3024   *
3025   * @since 2.3.0
3026   *
3027   * @see sanitize_post_field()
3028   *
3029   * @param object|WP_Post|array $post    The post object or array
3030   * @param string               $context Optional. How to sanitize post fields.
3031   *                                      Accepts 'raw', 'edit', 'db', 'display',
3032   *                                      'attribute', or 'js'. Default 'display'.
3033   * @return object|WP_Post|array The now sanitized post object or array (will be the
3034   *                              same type as `$post`).
3035   *
3036   * @phpstan-param stdClass|WP_Post|array<string, mixed> $post
3037   * @phpstan-param 'raw'|'edit'|'db'|'display'|'attribute'|'js' $context
3038   * @phpstan-return (
3039   *     $post is WP_Post ? WP_Post : (
3040   *         $post is stdClass ? stdClass : array<string, mixed>
3041   *     )
3042   * )
3043   */
3044  function sanitize_post( $post, $context = 'display' ) {
3045      if ( is_object( $post ) ) {
3046          // Check if post already filtered for this context.
3047          if ( isset( $post->filter ) && $context === $post->filter ) {
3048              return $post;
3049          }
3050          if ( ! isset( $post->ID ) ) {
3051              $post->ID = 0;
3052          }
3053          foreach ( array_keys( get_object_vars( $post ) ) as $field ) {
3054              $post->$field = sanitize_post_field( $field, $post->$field, (int) $post->ID, $context );
3055          }
3056          $post->filter = $context;
3057      } elseif ( is_array( $post ) ) {
3058          // Check if post already filtered for this context.
3059          if ( isset( $post['filter'] ) && $context === $post['filter'] ) {
3060              return $post;
3061          }
3062          if ( ! isset( $post['ID'] ) ) {
3063              $post['ID'] = 0;
3064          }
3065          foreach ( array_keys( $post ) as $field ) {
3066              $post[ $field ] = sanitize_post_field( $field, $post[ $field ], (int) $post['ID'], $context );
3067          }
3068          $post['filter'] = $context;
3069      }
3070      return $post;
3071  }
3072  
3073  /**
3074   * Sanitizes a post field based on context.
3075   *
3076   * Possible context values are:  'raw', 'edit', 'db', 'display', 'attribute' and
3077   * 'js'. The 'display' context is used by default. 'attribute' and 'js' contexts
3078   * are treated like 'display' when calling filters. The 'sample' value is used
3079   * for permalink previewing.
3080   *
3081   * @since 2.3.0
3082   * @since 4.4.0 Like `sanitize_post()`, `$context` defaults to 'display'.
3083   *
3084   * @param string $field   The Post Object field name.
3085   * @param mixed  $value   The Post Object value.
3086   * @param int    $post_id Post ID.
3087   * @param string $context Optional. How to sanitize the field. Possible values are 'raw', 'edit', 'db', 'display',
3088   *                        'attribute' and 'js'. The 'sample' value is used for permalink previewing. Default 'display'.
3089   * @return mixed Sanitized value.
3090   *
3091   * @phpstan-param 'raw'|'edit'|'db'|'display'|'attribute'|'js'|'sample' $context
3092   * @phpstan-return (
3093   *     $field is 'ID'|'post_parent'|'menu_order' ? int : (
3094   *         $field is 'ancestors' ? non-negative-int[] : string
3095   *     )
3096   * )
3097   */
3098  function sanitize_post_field( $field, $value, $post_id, $context = 'display' ) {
3099      $int_fields = array( 'ID', 'post_parent', 'menu_order' );
3100      if ( in_array( $field, $int_fields, true ) ) {
3101          $value = (int) $value;
3102      }
3103  
3104      // Fields which contain arrays of integers.
3105      $array_int_fields = array( 'ancestors' );
3106      if ( in_array( $field, $array_int_fields, true ) ) {
3107          $value = array_map( 'absint', (array) $value );
3108          return $value;
3109      }
3110  
3111      if ( 'raw' === $context ) {
3112          return $value;
3113      }
3114  
3115      $prefixed = false;
3116      if ( str_contains( $field, 'post_' ) ) {
3117          $prefixed        = true;
3118          $field_no_prefix = str_replace( 'post_', '', $field );
3119      }
3120  
3121      if ( 'edit' === $context ) {
3122          $format_to_edit = array( 'post_content', 'post_excerpt', 'post_title', 'post_password' );
3123  
3124          if ( $prefixed ) {
3125  
3126              /**
3127               * Filters the value of a specific post field to edit.
3128               *
3129               * The dynamic portion of the hook name, `$field`, refers to the post
3130               * field name. Possible filter names include:
3131               *
3132               *  - `edit_post_author`
3133               *  - `edit_post_date`
3134               *  - `edit_post_date_gmt`
3135               *  - `edit_post_content`
3136               *  - `edit_post_title`
3137               *  - `edit_post_excerpt`
3138               *  - `edit_post_status`
3139               *  - `edit_post_password`
3140               *  - `edit_post_name`
3141               *  - `edit_post_modified`
3142               *  - `edit_post_modified_gmt`
3143               *  - `edit_post_content_filtered`
3144               *  - `edit_post_parent`
3145               *  - `edit_post_type`
3146               *  - `edit_post_mime_type`
3147               *
3148               * @since 2.3.0
3149               *
3150               * @param mixed $value   Value of the post field.
3151               * @param int   $post_id Post ID.
3152               */
3153              $value = apply_filters( "edit_{$field}", $value, $post_id );
3154  
3155              /**
3156               * Filters the value of a specific post field to edit.
3157               *
3158               * Only applied to post fields with a name which is prefixed with `post_`.
3159               *
3160               * The dynamic portion of the hook name, `$field_no_prefix`, refers to the
3161               * post field name minus the `post_` prefix. Possible filter names include:
3162               *
3163               *  - `author_edit_pre`
3164               *  - `date_edit_pre`
3165               *  - `date_gmt_edit_pre`
3166               *  - `content_edit_pre`
3167               *  - `title_edit_pre`
3168               *  - `excerpt_edit_pre`
3169               *  - `status_edit_pre`
3170               *  - `password_edit_pre`
3171               *  - `name_edit_pre`
3172               *  - `modified_edit_pre`
3173               *  - `modified_gmt_edit_pre`
3174               *  - `content_filtered_edit_pre`
3175               *  - `parent_edit_pre`
3176               *  - `type_edit_pre`
3177               *  - `mime_type_edit_pre`
3178               *
3179               * @since 2.3.0
3180               *
3181               * @param mixed $value   Value of the post field.
3182               * @param int   $post_id Post ID.
3183               */
3184              $value = apply_filters( "{$field_no_prefix}_edit_pre", $value, $post_id );
3185          } else {
3186              /**
3187               * Filters the value of a specific post field to edit.
3188               *
3189               * Only applied to post fields not prefixed with `post_`.
3190               *
3191               * The dynamic portion of the hook name, `$field`, refers to the
3192               * post field name. Possible filter names include:
3193               *
3194               *  - `edit_post_ID`
3195               *  - `edit_post_ping_status`
3196               *  - `edit_post_pinged`
3197               *  - `edit_post_to_ping`
3198               *  - `edit_post_comment_count`
3199               *  - `edit_post_comment_status`
3200               *  - `edit_post_guid`
3201               *  - `edit_post_menu_order`
3202               *
3203               * @since 2.3.0
3204               *
3205               * @param mixed $value   Value of the post field.
3206               * @param int   $post_id Post ID.
3207               */
3208              $value = apply_filters( "edit_post_{$field}", $value, $post_id );
3209          }
3210  
3211          if ( in_array( $field, $format_to_edit, true ) ) {
3212              if ( 'post_content' === $field ) {
3213                  $value = format_to_edit( $value, user_can_richedit() );
3214              } else {
3215                  $value = format_to_edit( $value );
3216              }
3217          } else {
3218              $value = esc_attr( $value );
3219          }
3220      } elseif ( 'db' === $context ) {
3221          if ( $prefixed ) {
3222  
3223              /**
3224               * Filters the value of a specific post field before saving.
3225               *
3226               * Only applied to post fields with a name which is prefixed with `post_`.
3227               *
3228               * The dynamic portion of the hook name, `$field`, refers to the post
3229               * field name. Possible filter names include:
3230               *
3231               *  - `pre_post_author`
3232               *  - `pre_post_date`
3233               *  - `pre_post_date_gmt`
3234               *  - `pre_post_content`
3235               *  - `pre_post_title`
3236               *  - `pre_post_excerpt`
3237               *  - `pre_post_status`
3238               *  - `pre_post_password`
3239               *  - `pre_post_name`
3240               *  - `pre_post_modified`
3241               *  - `pre_post_modified_gmt`
3242               *  - `pre_post_content_filtered`
3243               *  - `pre_post_parent`
3244               *  - `pre_post_type`
3245               *  - `pre_post_mime_type`
3246               *
3247               * @since 2.3.0
3248               *
3249               * @param mixed $value Value of the post field.
3250               */
3251              $value = apply_filters( "pre_{$field}", $value );
3252  
3253              /**
3254               * Filters the value of a specific field before saving.
3255               *
3256               * Only applied to post fields with a name which is prefixed with `post_`.
3257               *
3258               * The dynamic portion of the hook name, `$field_no_prefix`, refers to the
3259               * post field name minus the `post_` prefix. Possible filter names include:
3260               *
3261               *  - `author_save_pre`
3262               *  - `date_save_pre`
3263               *  - `date_gmt_save_pre`
3264               *  - `content_save_pre`
3265               *  - `title_save_pre`
3266               *  - `excerpt_save_pre`
3267               *  - `status_save_pre`
3268               *  - `password_save_pre`
3269               *  - `name_save_pre`
3270               *  - `modified_save_pre`
3271               *  - `modified_gmt_save_pre`
3272               *  - `content_filtered_save_pre`
3273               *  - `parent_save_pre`
3274               *  - `type_save_pre`
3275               *  - `mime_type_save_pre`
3276               *
3277               * @since 2.3.0
3278               *
3279               * @param mixed $value Value of the post field.
3280               */
3281              $value = apply_filters( "{$field_no_prefix}_save_pre", $value );
3282          } else {
3283              /**
3284               * Filters the value of a specific field before saving.
3285               *
3286               * Only applied to post fields with a name which is prefixed with `post_`.
3287               *
3288               * The dynamic portion of the hook name, `$field_no_prefix`, refers to the
3289               * post field name minus the `post_` prefix. Possible filter names include:
3290               *
3291               *  - `pre_post_ID`
3292               *  - `pre_post_comment_status`
3293               *  - `pre_post_ping_status`
3294               *  - `pre_post_to_ping`
3295               *  - `pre_post_pinged`
3296               *  - `pre_post_guid`
3297               *  - `pre_post_menu_order`
3298               *  - `pre_post_comment_count`
3299               *
3300               * @since 2.3.0
3301               *
3302               * @param mixed $value Value of the post field.
3303               */
3304              $value = apply_filters( "pre_post_{$field}", $value );
3305  
3306              /**
3307               * Filters the value of a specific post field before saving.
3308               *
3309               * Only applied to post fields with a name which is *not* prefixed with `post_`.
3310               *
3311               * The dynamic portion of the hook name, `$field`, refers to the post
3312               * field name. Possible filter names include:
3313               *
3314               *  - `ID_pre`
3315               *  - `comment_status_pre`
3316               *  - `ping_status_pre`
3317               *  - `to_ping_pre`
3318               *  - `pinged_pre`
3319               *  - `guid_pre`
3320               *  - `menu_order_pre`
3321               *  - `comment_count_pre`
3322               *
3323               * @since 2.3.0
3324               *
3325               * @param mixed $value Value of the post field.
3326               */
3327              $value = apply_filters( "{$field}_pre", $value );
3328          }
3329      } else {
3330  
3331          // Use display filters by default.
3332          if ( $prefixed ) {
3333  
3334              /**
3335               * Filters the value of a specific post field for display.
3336               *
3337               * Only applied to post fields with a name which is prefixed with `post_`.
3338               *
3339               * The dynamic portion of the hook name, `$field`, refers to the post
3340               * field name. Possible filter names include:
3341               *
3342               *  - `post_author`
3343               *  - `post_date`
3344               *  - `post_date_gmt`
3345               *  - `post_content`
3346               *  - `post_title`
3347               *  - `post_excerpt`
3348               *  - `post_status`
3349               *  - `post_password`
3350               *  - `post_name`
3351               *  - `post_modified`
3352               *  - `post_modified_gmt`
3353               *  - `post_content_filtered`
3354               *  - `post_parent`
3355               *  - `post_type`
3356               *  - `post_mime_type`
3357               *
3358               * @since 2.3.0
3359               *
3360               * @param mixed  $value   Value of the prefixed post field.
3361               * @param int    $post_id Post ID.
3362               * @param string $context Context for how to sanitize the field.
3363               *                        Accepts 'raw', 'edit', 'db', 'display',
3364               *                        'attribute', or 'js'. The 'sample' value is
3365               *                        used for permalink previewing. Default 'display'.
3366               */
3367              $value = apply_filters( "{$field}", $value, $post_id, $context );
3368          } else {
3369              /**
3370               * Filters the value of a specific post field for display.
3371               *
3372               * Only applied to post fields name which is *not* prefixed with `post_`.
3373               *
3374               * The dynamic portion of the hook name, `$field`, refers to the post
3375               * field name. Possible filter names include:
3376               *
3377               *  - `post_ID`
3378               *  - `post_comment_status`
3379               *  - `post_ping_status`
3380               *  - `post_to_ping`
3381               *  - `post_pinged`
3382               *  - `post_guid`
3383               *  - `post_menu_order`
3384               *  - `post_comment_count`
3385               *
3386               * @since 2.3.0
3387               *
3388               * @param mixed  $value   Value of the unprefixed post field.
3389               * @param int    $post_id Post ID
3390               * @param string $context Context for how to sanitize the field.
3391               *                        Accepts 'raw', 'edit', 'db', 'display',
3392               *                        'attribute', or 'js'. The 'sample' value is
3393               *                        used for permalink previewing. Default 'display'.
3394               */
3395              $value = apply_filters( "post_{$field}", $value, $post_id, $context );
3396          }
3397  
3398          if ( 'attribute' === $context ) {
3399              $value = esc_attr( $value );
3400          } elseif ( 'js' === $context ) {
3401              $value = esc_js( $value );
3402          }
3403      }
3404  
3405      // Restore the type for integer fields after esc_attr().
3406      if ( in_array( $field, $int_fields, true ) ) {
3407          $value = (int) $value;
3408      }
3409      return $value;
3410  }
3411  
3412  /**
3413   * Makes a post sticky.
3414   *
3415   * Sticky posts should be displayed at the top of the front page.
3416   *
3417   * @since 2.7.0
3418   *
3419   * @param int $post_id Post ID.
3420   */
3421  function stick_post( $post_id ) {
3422      $post_id  = (int) $post_id;
3423      $stickies = get_option( 'sticky_posts' );
3424      $updated  = false;
3425  
3426      if ( ! is_array( $stickies ) ) {
3427          $stickies = array();
3428      } else {
3429          $stickies = array_unique( array_map( 'intval', $stickies ) );
3430      }
3431  
3432      if ( ! in_array( $post_id, $stickies, true ) ) {
3433          $stickies[] = $post_id;
3434          $updated    = update_option( 'sticky_posts', array_values( $stickies ) );
3435      }
3436  
3437      if ( $updated ) {
3438          /**
3439           * Fires once a post has been added to the sticky list.
3440           *
3441           * @since 4.6.0
3442           *
3443           * @param int $post_id ID of the post that was stuck.
3444           */
3445          do_action( 'post_stuck', $post_id );
3446      }
3447  }
3448  
3449  /**
3450   * Un-sticks a post.
3451   *
3452   * Sticky posts should be displayed at the top of the front page.
3453   *
3454   * @since 2.7.0
3455   *
3456   * @param int $post_id Post ID.
3457   */
3458  function unstick_post( $post_id ) {
3459      $post_id  = (int) $post_id;
3460      $stickies = get_option( 'sticky_posts' );
3461  
3462      if ( ! is_array( $stickies ) ) {
3463          return;
3464      }
3465  
3466      $stickies = array_values( array_unique( array_map( 'intval', $stickies ) ) );
3467  
3468      if ( ! in_array( $post_id, $stickies, true ) ) {
3469          return;
3470      }
3471  
3472      $offset = array_search( $post_id, $stickies, true );
3473      if ( false === $offset ) {
3474          return;
3475      }
3476  
3477      array_splice( $stickies, $offset, 1 );
3478  
3479      $updated = update_option( 'sticky_posts', $stickies );
3480  
3481      if ( $updated ) {
3482          /**
3483           * Fires once a post has been removed from the sticky list.
3484           *
3485           * @since 4.6.0
3486           *
3487           * @param int $post_id ID of the post that was unstuck.
3488           */
3489          do_action( 'post_unstuck', $post_id );
3490      }
3491  }
3492  
3493  /**
3494   * Returns the cache key for wp_count_posts() based on the passed arguments.
3495   *
3496   * @since 3.9.0
3497   * @access private
3498   *
3499   * @param string $type Optional. Post type to retrieve count Default 'post'.
3500   * @param string $perm Optional. 'readable' or empty. Default empty.
3501   * @return string The cache key.
3502   */
3503  function _count_posts_cache_key( $type = 'post', $perm = '' ) {
3504      $cache_key = 'posts-' . $type;
3505  
3506      if ( 'readable' === $perm && is_user_logged_in() ) {
3507          $post_type_object = get_post_type_object( $type );
3508  
3509          if ( $post_type_object && ! current_user_can( $post_type_object->cap->read_private_posts ) ) {
3510              $cache_key .= '_' . $perm . '_' . get_current_user_id();
3511          }
3512      }
3513  
3514      return $cache_key;
3515  }
3516  
3517  /**
3518   * Counts number of posts of a post type and if user has permissions to view.
3519   *
3520   * This function provides an efficient method of finding the amount of post's
3521   * type a blog has. Another method is to count the amount of items in
3522   * get_posts(), but that method has a lot of overhead with doing so. Therefore,
3523   * when developing for 2.5+, use this function instead.
3524   *
3525   * The $perm parameter checks for 'readable' value and if the user can read
3526   * private posts, it will display that for the user that is signed in.
3527   *
3528   * @since 2.5.0
3529   *
3530   * @global wpdb $wpdb WordPress database abstraction object.
3531   *
3532   * @param string $type Optional. Post type to retrieve count. Default 'post'.
3533   * @param string $perm Optional. 'readable' or empty. Default empty.
3534   * @return stdClass An object containing the number of posts for each status,
3535   *                  or an empty object if the post type does not exist.
3536   */
3537  function wp_count_posts( $type = 'post', $perm = '' ) {
3538      global $wpdb;
3539  
3540      if ( ! post_type_exists( $type ) ) {
3541          return new stdClass();
3542      }
3543  
3544      /**
3545       * Filters the post counts before the query is run.
3546       *
3547       * Returning a stdClass object short-circuits wp_count_posts(), skipping
3548       * both the object cache lookup and the database query. This allows the
3549       * counts to be served from another source, such as a value pre-computed in
3550       * the background, when an exact real-time count is not required.
3551       *
3552       * Any registered post status missing from the filtered value is added
3553       * to the result and set to zero.
3554       *
3555       * The returned value is not cached and passed through the
3556       * {@see 'wp_count_posts'} filter.
3557       *
3558       * @since 7.2.0
3559       *
3560       * @param stdClass|null $counts An object containing the post counts by status,
3561       *                              or null to run the default query. Default null.
3562       * @param string        $type   Post type.
3563       * @param string        $perm   The permission to determine if the posts are 'readable'
3564       *                              by the current user.
3565       */
3566      $counts = apply_filters( 'pre_wp_count_posts', null, $type, $perm );
3567  
3568      if ( $counts instanceof stdClass ) {
3569          $counts = clone $counts;
3570  
3571          foreach ( get_post_stati() as $status ) {
3572              if ( ! isset( $counts->{$status} ) ) {
3573                  $counts->{$status} = 0;
3574              }
3575          }
3576  
3577          /** This filter is documented in wp-includes/post.php */
3578          return apply_filters( 'wp_count_posts', $counts, $type, $perm );
3579      }
3580  
3581      $cache_key = _count_posts_cache_key( $type, $perm );
3582  
3583      $counts = wp_cache_get( $cache_key, 'counts' );
3584      if ( false !== $counts ) {
3585          // We may have cached this before every status was registered.
3586          foreach ( get_post_stati() as $status ) {
3587              if ( ! isset( $counts->{$status} ) ) {
3588                  $counts->{$status} = 0;
3589              }
3590          }
3591  
3592          /** This filter is documented in wp-includes/post.php */
3593          return apply_filters( 'wp_count_posts', $counts, $type, $perm );
3594      }
3595  
3596      if (
3597          'readable' === $perm &&
3598          is_user_logged_in() &&
3599          ! current_user_can( get_post_type_object( $type )->cap->read_private_posts )
3600      ) {
3601          // Optimized query uses subqueries which can leverage DB indexes for better performance. See #61097.
3602          $query = "
3603              SELECT post_status, COUNT(*) AS num_posts
3604              FROM (
3605                  SELECT post_status
3606                  FROM {$wpdb->posts}
3607                  WHERE post_type = %s AND post_status != 'private'
3608                  UNION ALL
3609                  SELECT post_status
3610                  FROM {$wpdb->posts}
3611                  WHERE post_type = %s AND post_status = 'private' AND post_author = %d
3612              ) AS filtered_posts
3613          ";
3614          $args  = array( $type, $type, get_current_user_id() );
3615      } else {
3616          $query = "
3617              SELECT post_status, COUNT(*) AS num_posts
3618              FROM {$wpdb->posts}
3619              WHERE post_type = %s
3620          ";
3621          $args  = array( $type );
3622      }
3623  
3624      $query .= ' GROUP BY post_status';
3625  
3626      $results = (array) $wpdb->get_results(
3627          $wpdb->prepare( $query, ...$args ), // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared -- Placeholders are used in the string contained in the variable.
3628          ARRAY_A
3629      );
3630      $counts  = array_fill_keys( get_post_stati(), 0 );
3631  
3632      foreach ( $results as $row ) {
3633          $counts[ $row['post_status'] ] = $row['num_posts'];
3634      }
3635  
3636      $counts = (object) $counts;
3637      wp_cache_set( $cache_key, $counts, 'counts' );
3638  
3639      /**
3640       * Filters the post counts by status for the current post type.
3641       *
3642       * @since 3.7.0
3643       *
3644       * @param stdClass $counts An object containing the current post_type's post
3645       *                         counts by status.
3646       * @param string   $type   Post type.
3647       * @param string   $perm   The permission to determine if the posts are 'readable'
3648       *                         by the current user.
3649       */
3650      return apply_filters( 'wp_count_posts', $counts, $type, $perm );
3651  }
3652  
3653  /**
3654   * Counts number of attachments for the mime type(s).
3655   *
3656   * If you set the optional mime_type parameter, then an array will still be
3657   * returned, but will only have the item you are looking for. It does not give
3658   * you the number of attachments that are children of a post. You can get that
3659   * by counting the number of children that post has.
3660   *
3661   * @since 2.5.0
3662   *
3663   * @global wpdb $wpdb WordPress database abstraction object.
3664   *
3665   * @param string|string[] $mime_type Optional. Array or comma-separated list of
3666   *                                   MIME patterns. Default empty.
3667   * @return stdClass An object containing the attachment counts by mime type.
3668   */
3669  function wp_count_attachments( $mime_type = '' ) {
3670      global $wpdb;
3671  
3672      /**
3673       * Filters the attachment counts before the query is run.
3674       *
3675       * Returning a stdClass object short-circuits wp_count_attachments(),
3676       * skipping both the object cache lookup and the database queries. This
3677       * allows the counts to be served from another source, such as a value
3678       * pre-computed in the background, when an exact real-time count is not
3679       * required.
3680       *
3681       * If the filtered value does not contain a trash count, one is added to the
3682       * result and set to zero. Missing MIME types are not added, as they depend on
3683       * the attachments that exist. The filtered value should therefore contain a
3684       * count for every MIME type matching `$mime_type` that has attachments,
3685       * including types first uploaded after the value was computed, as callers
3686       * may read the count for any MIME type that exists. It should also contain
3687       * only MIME types matching `$mime_type`, with a trash count limited to
3688       * attachments of those types, as the default query does.
3689       *
3690       * The returned value is not cached and passed through the
3691       * {@see 'wp_count_attachments'} filter.
3692       *
3693       * @since 7.2.0
3694       *
3695       * @param stdClass|null   $counts    An object containing the attachment counts by
3696       *                                   mime type, or null to run the default query.
3697       *                                   Default null.
3698       * @param string|string[] $mime_type Array or comma-separated list of MIME patterns.
3699       */
3700      $counts = apply_filters( 'pre_wp_count_attachments', null, $mime_type );
3701  
3702      if ( $counts instanceof stdClass ) {
3703          $counts = clone $counts;
3704  
3705          if ( ! isset( $counts->trash ) ) {
3706              $counts->trash = 0;
3707          }
3708  
3709          /** This filter is documented in wp-includes/post.php */
3710          return apply_filters( 'wp_count_attachments', $counts, $mime_type );
3711      }
3712  
3713      $cache_key = sprintf(
3714          'attachments%s',
3715          ! empty( $mime_type ) ? ':' . str_replace( '/', '_', implode( '-', (array) $mime_type ) ) : ''
3716      );
3717  
3718      $counts = wp_cache_get( $cache_key, 'counts' );
3719  
3720      if ( false === $counts ) {
3721          $and   = wp_post_mime_type_where( $mime_type );
3722          $count = $wpdb->get_results( "SELECT post_mime_type, COUNT( * ) AS num_posts FROM $wpdb->posts WHERE post_type = 'attachment' AND post_status != 'trash' $and GROUP BY post_mime_type", ARRAY_A );
3723  
3724          $counts = array();
3725          foreach ( (array) $count as $row ) {
3726              $counts[ $row['post_mime_type'] ] = $row['num_posts'];
3727          }
3728          $counts['trash'] = $wpdb->get_var( "SELECT COUNT( * ) FROM $wpdb->posts WHERE post_type = 'attachment' AND post_status = 'trash' $and" );
3729  
3730          wp_cache_set( $cache_key, (object) $counts, 'counts' );
3731      }
3732  
3733      /**
3734       * Filters the attachment counts by mime type.
3735       *
3736       * @since 3.7.0
3737       *
3738       * @param stdClass        $counts    An object containing the attachment counts by
3739       *                                   mime type.
3740       * @param string|string[] $mime_type Array or comma-separated list of MIME patterns.
3741       */
3742      return apply_filters( 'wp_count_attachments', (object) $counts, $mime_type );
3743  }
3744  
3745  /**
3746   * Gets default post mime types.
3747   *
3748   * @since 2.9.0
3749   * @since 5.3.0 Added the 'Documents', 'Spreadsheets', and 'Archives' mime type groups.
3750   *
3751   * @return array<string, array{0: string, 1: string, 2: array}> List of post mime types, keyed by mime type group
3752   *                                                              or by a comma-separated list of mime types. Each
3753   *                                                              value is a three-item array: the plural name of the
3754   *                                                              group, the label for its "Manage" screen, and the
3755   *                                                              translatable count strings returned by _n_noop().
3756   *
3757   * @phpstan-return array<string, array{
3758   *     0: string,
3759   *     1: string,
3760   *     2: array{
3761   *         singular: literal-string,
3762   *         plural: literal-string,
3763   *         context: literal-string|null,
3764   *         domain: literal-string|null,
3765   *         ...
3766   *     },
3767   * }>
3768   */
3769  function get_post_mime_types() {
3770      $post_mime_types = array(   // array( adj, noun )
3771          'image'       => array(
3772              __( 'Images' ),
3773              __( 'Manage Images' ),
3774              /* translators: %s: Number of images. */
3775              _n_noop(
3776                  'Image <span class="count">(%s)</span>',
3777                  'Images <span class="count">(%s)</span>'
3778              ),
3779          ),
3780          'audio'       => array(
3781              _x( 'Audio', 'file type group' ),
3782              __( 'Manage Audio' ),
3783              /* translators: %s: Number of audio files. */
3784              _n_noop(
3785                  'Audio <span class="count">(%s)</span>',
3786                  'Audio <span class="count">(%s)</span>'
3787              ),
3788          ),
3789          'video'       => array(
3790              _x( 'Video', 'file type group' ),
3791              __( 'Manage Video' ),
3792              /* translators: %s: Number of video files. */
3793              _n_noop(
3794                  'Video <span class="count">(%s)</span>',
3795                  'Video <span class="count">(%s)</span>'
3796              ),
3797          ),
3798          'document'    => array(
3799              __( 'Documents' ),
3800              __( 'Manage Documents' ),
3801              /* translators: %s: Number of documents. */
3802              _n_noop(
3803                  'Document <span class="count">(%s)</span>',
3804                  'Documents <span class="count">(%s)</span>'
3805              ),
3806          ),
3807          'spreadsheet' => array(
3808              __( 'Spreadsheets' ),
3809              __( 'Manage Spreadsheets' ),
3810              /* translators: %s: Number of spreadsheets. */
3811              _n_noop(
3812                  'Spreadsheet <span class="count">(%s)</span>',
3813                  'Spreadsheets <span class="count">(%s)</span>'
3814              ),
3815          ),
3816          'archive'     => array(
3817              _x( 'Archives', 'file type group' ),
3818              __( 'Manage Archives' ),
3819              /* translators: %s: Number of archives. */
3820              _n_noop(
3821                  'Archive <span class="count">(%s)</span>',
3822                  'Archives <span class="count">(%s)</span>'
3823              ),
3824          ),
3825      );
3826  
3827      $ext_types  = wp_get_ext_types();
3828      $mime_types = wp_get_mime_types();
3829  
3830      foreach ( $post_mime_types as $group => $labels ) {
3831          if ( in_array( $group, array( 'image', 'audio', 'video' ), true ) ) {
3832              continue;
3833          }
3834  
3835          if ( ! isset( $ext_types[ $group ] ) ) {
3836              unset( $post_mime_types[ $group ] );
3837              continue;
3838          }
3839  
3840          $group_mime_types = array();
3841          foreach ( $ext_types[ $group ] as $extension ) {
3842              foreach ( $mime_types as $exts => $mime ) {
3843                  if ( preg_match( '!^(' . $exts . ')$!i', $extension ) ) {
3844                      $group_mime_types[] = $mime;
3845                      break;
3846                  }
3847              }
3848          }
3849          $group_mime_types = implode( ',', array_unique( $group_mime_types ) );
3850  
3851          $post_mime_types[ $group_mime_types ] = $labels;
3852          unset( $post_mime_types[ $group ] );
3853      }
3854  
3855      /**
3856       * Filters the default list of post mime types.
3857       *
3858       * @since 2.5.0
3859       *
3860       * @param array<string, array{0: string, 1: string, 2: array}> $post_mime_types Default list of post mime types.
3861       *                                                                              See {@see get_post_mime_types()}.
3862       *
3863       * @phpstan-param array<string, array{
3864       *     0: string,
3865       *     1: string,
3866       *     2: array{
3867       *         singular: literal-string,
3868       *         plural: literal-string,
3869       *         context: literal-string|null,
3870       *         domain: literal-string|null,
3871       *         ...
3872       *     },
3873       * }> $post_mime_types
3874       */
3875      return apply_filters( 'post_mime_types', $post_mime_types );
3876  }
3877  
3878  /**
3879   * Checks a MIME-Type against a list.
3880   *
3881   * If the `$wildcard_mime_types` parameter is a string, it must be comma separated
3882   * list. If the `$real_mime_types` is a string, it is also comma separated to
3883   * create the list.
3884   *
3885   * @since 2.5.0
3886   *
3887   * @param string|string[] $wildcard_mime_types Mime types, e.g. `audio/mpeg`, `image` (same as `image/*`),
3888   *                                             or `flash` (same as `*flash*`).
3889   * @param string|string[] $real_mime_types     Real post mime type values.
3890   * @return array array(wildcard=>array(real types)).
3891   */
3892  function wp_match_mime_types( $wildcard_mime_types, $real_mime_types ) {
3893      $matches = array();
3894      if ( is_string( $wildcard_mime_types ) ) {
3895          $wildcard_mime_types = array_map( 'trim', explode( ',', $wildcard_mime_types ) );
3896      }
3897      if ( is_string( $real_mime_types ) ) {
3898          $real_mime_types = array_map( 'trim', explode( ',', $real_mime_types ) );
3899      }
3900  
3901      $patternses = array();
3902      $wild       = '[-._a-z0-9]*';
3903  
3904      foreach ( (array) $wildcard_mime_types as $type ) {
3905          $mimes = array_map( 'trim', explode( ',', $type ) );
3906          foreach ( $mimes as $mime ) {
3907              $regex = str_replace( '__wildcard__', $wild, preg_quote( str_replace( '*', '__wildcard__', $mime ) ) );
3908  
3909              $patternses[][ $type ] = "^$regex$";
3910  
3911              if ( ! str_contains( $mime, '/' ) ) {
3912                  $patternses[][ $type ] = "^$regex/";
3913                  $patternses[][ $type ] = $regex;
3914              }
3915          }
3916      }
3917      asort( $patternses );
3918  
3919      foreach ( $patternses as $patterns ) {
3920          foreach ( $patterns as $type => $pattern ) {
3921              foreach ( (array) $real_mime_types as $real ) {
3922                  if ( preg_match( "#$pattern#", $real )
3923                      && ( empty( $matches[ $type ] ) || ! in_array( $real, $matches[ $type ], true ) )
3924                  ) {
3925                      $matches[ $type ][] = $real;
3926                  }
3927              }
3928          }
3929      }
3930  
3931      return $matches;
3932  }
3933  
3934  /**
3935   * Converts MIME types into SQL.
3936   *
3937   * @since 2.5.0
3938   *
3939   * @param string|string[] $post_mime_types List of mime types or comma separated string
3940   *                                         of mime types.
3941   * @param string          $table_alias     Optional. Specify a table alias, if needed.
3942   *                                         Default empty.
3943   * @return string The SQL AND clause for mime searching.
3944   */
3945  function wp_post_mime_type_where( $post_mime_types, $table_alias = '' ) {
3946      $where     = '';
3947      $wildcards = array( '', '%', '%/%' );
3948      if ( is_string( $post_mime_types ) ) {
3949          $post_mime_types = array_map( 'trim', explode( ',', $post_mime_types ) );
3950      }
3951  
3952      $where_clauses = array();
3953  
3954      foreach ( (array) $post_mime_types as $mime_type ) {
3955          $mime_type = preg_replace( '/\s/', '', $mime_type );
3956          $slashpos  = strpos( $mime_type, '/' );
3957          if ( false !== $slashpos ) {
3958              $mime_group    = preg_replace( '/[^-*.a-zA-Z0-9]/', '', substr( $mime_type, 0, $slashpos ) );
3959              $mime_subgroup = preg_replace( '/[^-*.+a-zA-Z0-9]/', '', substr( $mime_type, $slashpos + 1 ) );
3960              if ( empty( $mime_subgroup ) ) {
3961                  $mime_subgroup = '*';
3962              } else {
3963                  $mime_subgroup = str_replace( '/', '', $mime_subgroup );
3964              }
3965              $mime_pattern = "$mime_group/$mime_subgroup";
3966          } else {
3967              $mime_pattern = preg_replace( '/[^-*.a-zA-Z0-9]/', '', $mime_type );
3968              if ( ! str_contains( $mime_pattern, '*' ) ) {
3969                  $mime_pattern .= '/*';
3970              }
3971          }
3972  
3973          $mime_pattern = preg_replace( '/\*+/', '%', $mime_pattern );
3974  
3975          if ( in_array( $mime_type, $wildcards, true ) ) {
3976              return '';
3977          }
3978  
3979          if ( str_contains( $mime_pattern, '%' ) ) {
3980              $where_clauses[] = empty( $table_alias ) ? "post_mime_type LIKE '$mime_pattern'" : "$table_alias.post_mime_type LIKE '$mime_pattern'";
3981          } else {
3982              $where_clauses[] = empty( $table_alias ) ? "post_mime_type = '$mime_pattern'" : "$table_alias.post_mime_type = '$mime_pattern'";
3983          }
3984      }
3985  
3986      if ( ! empty( $where_clauses ) ) {
3987          $where = ' AND (' . implode( ' OR ', $where_clauses ) . ') ';
3988      }
3989  
3990      return $where;
3991  }
3992  
3993  /**
3994   * Trashes or deletes a post or page.
3995   *
3996   * When the post and page is permanently deleted, everything that is tied to
3997   * it is deleted also. This includes comments, post meta fields, and terms
3998   * associated with the post.
3999   *
4000   * The post or page is moved to Trash instead of permanently deleted unless
4001   * Trash is disabled, item is already in the Trash, or $force_delete is true.
4002   *
4003   * @since 1.0.0
4004   *
4005   * @global wpdb $wpdb WordPress database abstraction object.
4006   * @see wp_delete_attachment()
4007   * @see wp_trash_post()
4008   *
4009   * @param int  $post_id      Post ID. (The default of 0 is for historical reasons; providing it is incorrect.)
4010   * @param bool $force_delete Optional. Whether to bypass Trash and force deletion.
4011   *                           Default false.
4012   * @return WP_Post|false|null Post data on success, false or null on failure.
4013   */
4014  function wp_delete_post( $post_id = 0, $force_delete = false ) {
4015      global $wpdb;
4016  
4017      $post_id = (int) $post_id;
4018      if ( $post_id <= 0 ) {
4019          _doing_it_wrong( __FUNCTION__, __( 'The post ID must be greater than 0.' ), '6.9.0' );
4020          return false;
4021      }
4022  
4023      $post = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->posts WHERE ID = %d", $post_id ) );
4024  
4025      if ( ! $post ) {
4026          return $post;
4027      }
4028  
4029      $post = get_post( $post );
4030  
4031      if ( ! $force_delete
4032          && ( 'post' === $post->post_type || 'page' === $post->post_type )
4033          && 'trash' !== get_post_status( $post_id ) && EMPTY_TRASH_DAYS
4034      ) {
4035          return wp_trash_post( $post_id );
4036      }
4037  
4038      if ( 'attachment' === $post->post_type ) {
4039          return wp_delete_attachment( $post_id, $force_delete );
4040      }
4041  
4042      /**
4043       * Filters whether a post deletion should take place.
4044       *
4045       * @since 4.4.0
4046       *
4047       * @param WP_Post|false|null $check        Whether to go forward with deletion. Anything other than null will short-circuit deletion.
4048       * @param WP_Post            $post         Post object.
4049       * @param bool               $force_delete Whether to bypass the Trash.
4050       */
4051      $check = apply_filters( 'pre_delete_post', null, $post, $force_delete );
4052      if ( null !== $check ) {
4053          return $check;
4054      }
4055  
4056      /**
4057       * Fires before a post is deleted, at the start of wp_delete_post().
4058       *
4059       * @since 3.2.0
4060       * @since 5.5.0 Added the `$post` parameter.
4061       *
4062       * @see wp_delete_post()
4063       *
4064       * @param int     $post_id Post ID.
4065       * @param WP_Post $post    Post object.
4066       */
4067      do_action( 'before_delete_post', $post_id, $post );
4068  
4069      delete_post_meta( $post_id, '_wp_trash_meta_status' );
4070      delete_post_meta( $post_id, '_wp_trash_meta_time' );
4071  
4072      wp_delete_object_term_relationships( $post_id, get_object_taxonomies( $post->post_type ) );
4073  
4074      $parent_data  = array( 'post_parent' => $post->post_parent );
4075      $parent_where = array( 'post_parent' => $post_id );
4076  
4077      if ( is_post_type_hierarchical( $post->post_type ) ) {
4078          // Point children of this page to its parent, also clean the cache of affected children.
4079          $children_query = $wpdb->prepare(
4080              "SELECT * FROM $wpdb->posts WHERE post_parent = %d AND post_type = %s",
4081              $post_id,
4082              $post->post_type
4083          );
4084  
4085          $children = $wpdb->get_results( $children_query );
4086  
4087          if ( $children ) {
4088              $wpdb->update( $wpdb->posts, $parent_data, $parent_where + array( 'post_type' => $post->post_type ) );
4089          }
4090      }
4091  
4092      // Do raw query. wp_get_post_revisions() is filtered.
4093      $revision_ids = $wpdb->get_col(
4094          $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_parent = %d AND post_type = 'revision'", $post_id )
4095      );
4096  
4097      // Use wp_delete_post (via wp_delete_post_revision) again. Ensures any meta/misplaced data gets cleaned up.
4098      foreach ( $revision_ids as $revision_id ) {
4099          wp_delete_post_revision( $revision_id );
4100      }
4101  
4102      // Point all attachments to this post up one level.
4103      $wpdb->update( $wpdb->posts, $parent_data, $parent_where + array( 'post_type' => 'attachment' ) );
4104  
4105      wp_defer_comment_counting( true );
4106  
4107      $comment_ids = $wpdb->get_col(
4108          $wpdb->prepare( "SELECT comment_ID FROM $wpdb->comments WHERE comment_post_ID = %d ORDER BY comment_ID DESC", $post_id )
4109      );
4110  
4111      foreach ( $comment_ids as $comment_id ) {
4112          wp_delete_comment( $comment_id, true );
4113      }
4114  
4115      wp_defer_comment_counting( false );
4116  
4117      $post_meta_ids = $wpdb->get_col(
4118          $wpdb->prepare( "SELECT meta_id FROM $wpdb->postmeta WHERE post_id = %d ", $post_id )
4119      );
4120  
4121      foreach ( $post_meta_ids as $mid ) {
4122          delete_metadata_by_mid( 'post', $mid );
4123      }
4124  
4125      /**
4126       * Fires immediately before a post is deleted from the database.
4127       *
4128       * The dynamic portion of the hook name, `$post->post_type`, refers to
4129       * the post type slug.
4130       *
4131       * @since 6.6.0
4132       *
4133       * @param int     $post_id Post ID.
4134       * @param WP_Post $post    Post object.
4135       */
4136      do_action( "delete_post_{$post->post_type}", $post_id, $post );
4137  
4138      /**
4139       * Fires immediately before a post is deleted from the database.
4140       *
4141       * @since 1.2.0
4142       * @since 5.5.0 Added the `$post` parameter.
4143       *
4144       * @param int     $post_id Post ID.
4145       * @param WP_Post $post    Post object.
4146       */
4147      do_action( 'delete_post', $post_id, $post );
4148  
4149      $result = $wpdb->delete( $wpdb->posts, array( 'ID' => $post_id ) );
4150      if ( ! $result ) {
4151          return false;
4152      }
4153  
4154      /**
4155       * Fires immediately after a post is deleted from the database.
4156       *
4157       * The dynamic portion of the hook name, `$post->post_type`, refers to
4158       * the post type slug.
4159       *
4160       * @since 6.6.0
4161       *
4162       * @param int     $post_id Post ID.
4163       * @param WP_Post $post    Post object.
4164       */
4165      do_action( "deleted_post_{$post->post_type}", $post_id, $post );
4166  
4167      /**
4168       * Fires immediately after a post is deleted from the database.
4169       *
4170       * @since 2.2.0
4171       * @since 5.5.0 Added the `$post` parameter.
4172       *
4173       * @param int     $post_id Post ID.
4174       * @param WP_Post $post    Post object.
4175       */
4176      do_action( 'deleted_post', $post_id, $post );
4177  
4178      clean_post_cache( $post );
4179  
4180      if ( is_post_type_hierarchical( $post->post_type ) && $children ) {
4181          foreach ( $children as $child ) {
4182              clean_post_cache( $child );
4183          }
4184      }
4185  
4186      wp_clear_scheduled_hook( 'publish_future_post', array( $post_id ) );
4187  
4188      /**
4189       * Fires after a post is deleted, at the conclusion of wp_delete_post().
4190       *
4191       * @since 3.2.0
4192       * @since 5.5.0 Added the `$post` parameter.
4193       *
4194       * @see wp_delete_post()
4195       *
4196       * @param int     $post_id Post ID.
4197       * @param WP_Post $post    Post object.
4198       */
4199      do_action( 'after_delete_post', $post_id, $post );
4200  
4201      return $post;
4202  }
4203  
4204  /**
4205   * Resets the page_on_front, show_on_front, and page_for_post settings when
4206   * a linked page is deleted or trashed.
4207   *
4208   * Also ensures the post is no longer sticky.
4209   *
4210   * @since 3.7.0
4211   * @access private
4212   *
4213   * @param int $post_id Post ID.
4214   */
4215  function _reset_front_page_settings_for_post( $post_id ) {
4216      $post = get_post( $post_id );
4217  
4218      if ( 'page' === $post->post_type ) {
4219          /*
4220           * If the page is defined in option page_on_front or post_for_posts,
4221           * adjust the corresponding options.
4222           */
4223          if ( (int) get_option( 'page_on_front' ) === $post->ID ) {
4224              update_option( 'show_on_front', 'posts' );
4225              update_option( 'page_on_front', 0 );
4226          }
4227          if ( (int) get_option( 'page_for_posts' ) === $post->ID ) {
4228              update_option( 'page_for_posts', 0 );
4229          }
4230      }
4231  
4232      unstick_post( $post->ID );
4233  }
4234  
4235  /**
4236   * Resets the Privacy Policy page ID option when the Privacy Policy page
4237   * is permanently deleted, to prevent uncached database queries for a
4238   * non-existent page.
4239   *
4240   * @since 7.1.0
4241   * @access private
4242   *
4243   * @param int $post_id The ID of the post being deleted.
4244   */
4245  function _reset_privacy_policy_page_for_post( int $post_id ): void {
4246      if ( 'page' === get_post_type( $post_id ) && ( (int) get_option( 'wp_page_for_privacy_policy' ) === $post_id ) ) {
4247          update_option( 'wp_page_for_privacy_policy', 0 );
4248      }
4249  }
4250  
4251  /**
4252   * Moves a post or page to the Trash
4253   *
4254   * If Trash is disabled, the post or page is permanently deleted.
4255   *
4256   * @since 2.9.0
4257   *
4258   * @see wp_delete_post()
4259   *
4260   * @param int $post_id Optional. Post ID. Default is the ID of the global `$post`
4261   *                     if `EMPTY_TRASH_DAYS` equals true.
4262   * @return WP_Post|false|null Post data on success, false or null on failure.
4263   */
4264  function wp_trash_post( $post_id = 0 ) {
4265      if ( ! EMPTY_TRASH_DAYS ) {
4266          return wp_delete_post( $post_id, true );
4267      }
4268  
4269      $post = get_post( $post_id );
4270  
4271      if ( ! $post ) {
4272          return $post;
4273      }
4274  
4275      if ( 'trash' === $post->post_status ) {
4276          return false;
4277      }
4278  
4279      $previous_status = $post->post_status;
4280  
4281      /**
4282       * Filters whether a post trashing should take place.
4283       *
4284       * @since 4.9.0
4285       * @since 6.3.0 Added the `$previous_status` parameter.
4286       *
4287       * @param bool|null $trash           Whether to go forward with trashing.
4288       * @param WP_Post   $post            Post object.
4289       * @param string    $previous_status The status of the post about to be trashed.
4290       */
4291      $check = apply_filters( 'pre_trash_post', null, $post, $previous_status );
4292  
4293      if ( null !== $check ) {
4294          return $check;
4295      }
4296  
4297      /**
4298       * Fires before a post is sent to the Trash.
4299       *
4300       * @since 3.3.0
4301       * @since 6.3.0 Added the `$previous_status` parameter.
4302       *
4303       * @param int    $post_id         Post ID.
4304       * @param string $previous_status The status of the post about to be trashed.
4305       */
4306      do_action( 'wp_trash_post', $post_id, $previous_status );
4307  
4308      add_post_meta( $post_id, '_wp_trash_meta_status', $previous_status );
4309      add_post_meta( $post_id, '_wp_trash_meta_time', time() );
4310  
4311      $post_updated = wp_update_post(
4312          array(
4313              'ID'          => $post_id,
4314              'post_status' => 'trash',
4315          )
4316      );
4317  
4318      if ( ! $post_updated ) {
4319          return false;
4320      }
4321  
4322      wp_trash_post_comments( $post_id );
4323  
4324      /**
4325       * Fires after a post is sent to the Trash.
4326       *
4327       * @since 2.9.0
4328       * @since 6.3.0 Added the `$previous_status` parameter.
4329       *
4330       * @param int    $post_id         Post ID.
4331       * @param string $previous_status The status of the post at the point where it was trashed.
4332       */
4333      do_action( 'trashed_post', $post_id, $previous_status );
4334  
4335      return $post;
4336  }
4337  
4338  /**
4339   * Restores a post from the Trash.
4340   *
4341   * @since 2.9.0
4342   * @since 5.6.0 An untrashed post is now returned to 'draft' status by default, except for
4343   *              attachments which are returned to their original 'inherit' status.
4344   *
4345   * @param int $post_id Optional. Post ID. Default is the ID of the global `$post`.
4346   * @return WP_Post|false|null Post data on success, false or null on failure.
4347   */
4348  function wp_untrash_post( $post_id = 0 ) {
4349      $post = get_post( $post_id );
4350  
4351      if ( ! $post ) {
4352          return $post;
4353      }
4354  
4355      $post_id = $post->ID;
4356  
4357      if ( 'trash' !== $post->post_status ) {
4358          return false;
4359      }
4360  
4361      $previous_status = get_post_meta( $post_id, '_wp_trash_meta_status', true );
4362  
4363      /**
4364       * Filters whether a post untrashing should take place.
4365       *
4366       * @since 4.9.0
4367       * @since 5.6.0 Added the `$previous_status` parameter.
4368       *
4369       * @param bool|null $untrash         Whether to go forward with untrashing.
4370       * @param WP_Post   $post            Post object.
4371       * @param string    $previous_status The status of the post at the point where it was trashed.
4372       */
4373      $check = apply_filters( 'pre_untrash_post', null, $post, $previous_status );
4374      if ( null !== $check ) {
4375          return $check;
4376      }
4377  
4378      /**
4379       * Fires before a post is restored from the Trash.
4380       *
4381       * @since 2.9.0
4382       * @since 5.6.0 Added the `$previous_status` parameter.
4383       *
4384       * @param int    $post_id         Post ID.
4385       * @param string $previous_status The status of the post at the point where it was trashed.
4386       */
4387      do_action( 'untrash_post', $post_id, $previous_status );
4388  
4389      $new_status = ( 'attachment' === $post->post_type ) ? 'inherit' : 'draft';
4390  
4391      /**
4392       * Filters the status that a post gets assigned when it is restored from the trash (untrashed).
4393       *
4394       * By default posts that are restored will be assigned a status of 'draft'. Return the value of `$previous_status`
4395       * in order to assign the status that the post had before it was trashed. The `wp_untrash_post_set_previous_status()`
4396       * function is available for this.
4397       *
4398       * Prior to WordPress 5.6.0, restored posts were always assigned their original status.
4399       *
4400       * @since 5.6.0
4401       *
4402       * @param string $new_status      The new status of the post being restored.
4403       * @param int    $post_id         The ID of the post being restored.
4404       * @param string $previous_status The status of the post at the point where it was trashed.
4405       */
4406      $post_status = apply_filters( 'wp_untrash_post_status', $new_status, $post_id, $previous_status );
4407  
4408      delete_post_meta( $post_id, '_wp_trash_meta_status' );
4409      delete_post_meta( $post_id, '_wp_trash_meta_time' );
4410  
4411      $post_updated = wp_update_post(
4412          array(
4413              'ID'          => $post_id,
4414              'post_status' => $post_status,
4415          )
4416      );
4417  
4418      if ( ! $post_updated ) {
4419          return false;
4420      }
4421  
4422      wp_untrash_post_comments( $post_id );
4423  
4424      /**
4425       * Fires after a post is restored from the Trash.
4426       *
4427       * @since 2.9.0
4428       * @since 5.6.0 Added the `$previous_status` parameter.
4429       *
4430       * @param int    $post_id         Post ID.
4431       * @param string $previous_status The status of the post at the point where it was trashed.
4432       */
4433      do_action( 'untrashed_post', $post_id, $previous_status );
4434  
4435      return $post;
4436  }
4437  
4438  /**
4439   * Moves comments for a post to the Trash.
4440   *
4441   * @since 2.9.0
4442   *
4443   * @global wpdb $wpdb WordPress database abstraction object.
4444   *
4445   * @param int|WP_Post|null $post Optional. Post ID or post object. Defaults to global $post.
4446   * @return int|false|null int if the comments were successfully deleted, false on failure and null if the post or comment did not exist.
4447   */
4448  function wp_trash_post_comments( $post = null ) {
4449      global $wpdb;
4450  
4451      $post = get_post( $post );
4452  
4453      if ( ! $post ) {
4454          return null;
4455      }
4456  
4457      $post_id = $post->ID;
4458  
4459      /**
4460       * Fires before comments are sent to the Trash.
4461       *
4462       * @since 2.9.0
4463       *
4464       * @param int $post_id Post ID.
4465       */
4466      do_action( 'trash_post_comments', $post_id );
4467  
4468      $comments = $wpdb->get_results( $wpdb->prepare( "SELECT comment_ID, comment_approved FROM $wpdb->comments WHERE comment_post_ID = %d", $post_id ) );
4469  
4470      if ( ! $comments ) {
4471          return null;
4472      }
4473  
4474      // Cache current status for each comment.
4475      $statuses = array();
4476      foreach ( $comments as $comment ) {
4477          $statuses[ $comment->comment_ID ] = $comment->comment_approved;
4478      }
4479      add_post_meta( $post_id, '_wp_trash_meta_comments_status', $statuses );
4480  
4481      // Set status for all comments to post-trashed.
4482      $result = $wpdb->update( $wpdb->comments, array( 'comment_approved' => 'post-trashed' ), array( 'comment_post_ID' => $post_id ) );
4483  
4484      clean_comment_cache( array_keys( $statuses ) );
4485  
4486      /**
4487       * Fires after comments are sent to the Trash.
4488       *
4489       * @since 2.9.0
4490       *
4491       * @param int   $post_id  Post ID.
4492       * @param array $statuses Array of comment statuses.
4493       */
4494      do_action( 'trashed_post_comments', $post_id, $statuses );
4495  
4496      return $result;
4497  }
4498  
4499  /**
4500   * Restores comments for a post from the Trash.
4501   *
4502   * @since 2.9.0
4503   *
4504   * @global wpdb $wpdb WordPress database abstraction object.
4505   *
4506   * @param int|WP_Post|null $post Optional. Post ID or post object. Defaults to global $post.
4507   * @return true|null
4508   */
4509  function wp_untrash_post_comments( $post = null ) {
4510      global $wpdb;
4511  
4512      $post = get_post( $post );
4513  
4514      if ( ! $post ) {
4515          return null;
4516      }
4517  
4518      $post_id = $post->ID;
4519  
4520      $statuses = get_post_meta( $post_id, '_wp_trash_meta_comments_status', true );
4521  
4522      if ( ! $statuses ) {
4523          return true;
4524      }
4525  
4526      /**
4527       * Fires before comments are restored for a post from the Trash.
4528       *
4529       * @since 2.9.0
4530       *
4531       * @param int $post_id Post ID.
4532       */
4533      do_action( 'untrash_post_comments', $post_id );
4534  
4535      // Restore each comment to its original status.
4536      $group_by_status = array();
4537      foreach ( $statuses as $comment_id => $comment_status ) {
4538          $group_by_status[ $comment_status ][] = $comment_id;
4539      }
4540  
4541      foreach ( $group_by_status as $status => $comments ) {
4542          // Confidence check. This shouldn't happen.
4543          if ( 'post-trashed' === $status ) {
4544              $status = '0';
4545          }
4546          $comments_in = implode( ', ', array_map( 'intval', $comments ) );
4547          $wpdb->query( $wpdb->prepare( "UPDATE $wpdb->comments SET comment_approved = %s WHERE comment_ID IN ($comments_in)", $status ) );
4548      }
4549  
4550      clean_comment_cache( array_keys( $statuses ) );
4551  
4552      delete_post_meta( $post_id, '_wp_trash_meta_comments_status' );
4553  
4554      /**
4555       * Fires after comments are restored for a post from the Trash.
4556       *
4557       * @since 2.9.0
4558       *
4559       * @param int $post_id Post ID.
4560       */
4561      do_action( 'untrashed_post_comments', $post_id );
4562  
4563      return null;
4564  }
4565  
4566  /**
4567   * Retrieves the list of categories for a post.
4568   *
4569   * Compatibility layer for themes and plugins. Also an easy layer of abstraction
4570   * away from the complexity of the taxonomy layer.
4571   *
4572   * @since 2.1.0
4573   *
4574   * @see wp_get_object_terms()
4575   *
4576   * @param int   $post_id Optional. The Post ID. Does not default to the ID of the
4577   *                       global $post. Default 0.
4578   * @param array $args    Optional. Category query parameters. Default empty array.
4579   *                       See WP_Term_Query::__construct() for supported arguments.
4580   * @return int[]|WP_Term[]|string[]|string|WP_Error List of categories. An array of category IDs by
4581   *                                                  default, and if the `$fields` argument passed via
4582   *                                                  `$args` is 'ids'. If `$fields` is 'all' or
4583   *                                                  'all_with_object_id', an array of WP_Term objects.
4584   *                                                  If `$fields` is 'names', an array of category names.
4585   *                                                  If `$fields` is 'count', a count thereof as a numeric
4586   *                                                  string. WP_Error object if 'category' taxonomy
4587   *                                                  doesn't exist.
4588   *
4589   * @phpstan-return (
4590   *     $args is array{ fields: 'count', ... }
4591   *         ? numeric-string|WP_Error
4592   *         : ( $args is array{ fields: 'id=>parent', ... }
4593   *             ? array<int, int>|WP_Error
4594   *             : ( $args is array{ fields: 'names'|'slugs', ... }
4595   *                 ? string[]|WP_Error
4596   *                 : ( $args is array{ fields: 'id=>name'|'id=>slug', ... }
4597   *                     ? array<int, string>|WP_Error
4598   *                     : ( $args is array{ fields: 'all'|'all_with_object_id', ... }
4599   *                         ? WP_Term[]|WP_Error
4600   *                         : int[]|WP_Error ) ) ) )
4601   * )
4602   */
4603  function wp_get_post_categories( $post_id = 0, $args = array() ) {
4604      $post_id = (int) $post_id;
4605  
4606      $defaults = array( 'fields' => 'ids' );
4607      $args     = wp_parse_args( $args, $defaults );
4608  
4609      $cats = wp_get_object_terms( $post_id, 'category', $args );
4610      return $cats;
4611  }
4612  
4613  /**
4614   * Retrieves the tags for a post.
4615   *
4616   * There is only one default for this function, called 'fields' and by default
4617   * is set to 'all'. There are other defaults that can be overridden in
4618   * wp_get_object_terms().
4619   *
4620   * @since 2.3.0
4621   *
4622   * @param int   $post_id Optional. The Post ID. Does not default to the ID of the
4623   *                       global $post. Default 0.
4624   * @param array $args    Optional. Tag query parameters. Default empty array.
4625   *                       See WP_Term_Query::__construct() for supported arguments.
4626   * @return WP_Term[]|int[]|string[]|string|WP_Error Array of WP_Term objects on success or empty array if no
4627   *                                                  tags were found. A count thereof as a numeric string if
4628   *                                                  the `$fields` argument passed via `$args` is 'count'.
4629   *                                                  WP_Error object if 'post_tag' taxonomy doesn't exist.
4630   *
4631   * @phpstan-return (
4632   *     $args is array{ fields: 'count', ... }
4633   *         ? numeric-string|WP_Error
4634   *         : ( $args is array{ fields: 'ids'|'tt_ids', ... }
4635   *             ? int[]|WP_Error
4636   *             : ( $args is array{ fields: 'id=>parent', ... }
4637   *                 ? array<int, int>|WP_Error
4638   *                 : ( $args is array{ fields: 'names'|'slugs', ... }
4639   *                     ? string[]|WP_Error
4640   *                     : ( $args is array{ fields: 'id=>name'|'id=>slug', ... }
4641   *                         ? array<int, string>|WP_Error
4642   *                         : WP_Term[]|WP_Error ) ) ) )
4643   * )
4644   */
4645  function wp_get_post_tags( $post_id = 0, $args = array() ) {
4646      return wp_get_post_terms( $post_id, 'post_tag', $args );
4647  }
4648  
4649  /**
4650   * Retrieves the terms for a post.
4651   *
4652   * @since 2.8.0
4653   *
4654   * @param int             $post_id  Optional. The Post ID. Does not default to the ID of the
4655   *                                  global $post. Default 0.
4656   * @param string|string[] $taxonomy Optional. The taxonomy slug or array of slugs for which
4657   *                                  to retrieve terms. Default 'post_tag'.
4658   * @param array           $args     {
4659   *     Optional. Term query parameters. See WP_Term_Query::__construct() for supported arguments.
4660   *
4661   *     @type string $fields Term fields to retrieve. Default 'all'.
4662   * }
4663   * @return WP_Term[]|int[]|string[]|string|WP_Error Array of WP_Term objects on success or empty array if no
4664   *                                                  terms were found. A count thereof as a numeric string if
4665   *                                                  the `$fields` argument passed via `$args` is 'count'.
4666   *                                                  WP_Error object if `$taxonomy` doesn't exist.
4667   *
4668   * @phpstan-return (
4669   *     $args is array{ fields: 'count', ... }
4670   *         ? numeric-string|WP_Error
4671   *         : ( $args is array{ fields: 'ids'|'tt_ids', ... }
4672   *             ? int[]|WP_Error
4673   *             : ( $args is array{ fields: 'id=>parent', ... }
4674   *                 ? array<int, int>|WP_Error
4675   *                 : ( $args is array{ fields: 'names'|'slugs', ... }
4676   *                     ? string[]|WP_Error
4677   *                     : ( $args is array{ fields: 'id=>name'|'id=>slug', ... }
4678   *                         ? array<int, string>|WP_Error
4679   *                         : WP_Term[]|WP_Error ) ) ) )
4680   * )
4681   */
4682  function wp_get_post_terms( $post_id = 0, $taxonomy = 'post_tag', $args = array() ) {
4683      $post_id = (int) $post_id;
4684  
4685      $defaults = array( 'fields' => 'all' );
4686      $args     = wp_parse_args( $args, $defaults );
4687  
4688      $tags = wp_get_object_terms( $post_id, $taxonomy, $args );
4689  
4690      return $tags;
4691  }
4692  
4693  /**
4694   * Retrieves a number of recent posts.
4695   *
4696   * @since 1.0.0
4697   *
4698   * @see get_posts()
4699   *
4700   * @param array  $args   Optional. Arguments to retrieve posts. Default empty array.
4701   * @param string $output Optional. The required return type. One of OBJECT or ARRAY_A, which
4702   *                       correspond to a WP_Post object or an associative array, respectively.
4703   *                       Default ARRAY_A.
4704   * @return array|false Array of recent posts, where the type of each element is determined
4705   *                     by the `$output` parameter. Empty array on failure.
4706   *
4707   * @phpstan-param 'OBJECT'|'ARRAY_A' $output
4708   * @phpstan-return (
4709   *     $output is 'ARRAY_A' ? array<int, non-empty-array<string, mixed>> : WP_Post[]|false
4710   * )
4711   */
4712  function wp_get_recent_posts( $args = array(), $output = ARRAY_A ) {
4713  
4714      if ( is_numeric( $args ) ) {
4715          _deprecated_argument( __FUNCTION__, '3.1.0', __( 'Passing an integer number of posts is deprecated. Pass an array of arguments instead.' ) );
4716          $args = array( 'numberposts' => absint( $args ) );
4717      }
4718  
4719      // Set default arguments.
4720      $defaults = array(
4721          'numberposts'      => 10,
4722          'offset'           => 0,
4723          'category'         => 0,
4724          'orderby'          => 'post_date',
4725          'order'            => 'DESC',
4726          'include'          => '',
4727          'exclude'          => '',
4728          'meta_key'         => '',
4729          'meta_value'       => '',
4730          'post_type'        => 'post',
4731          'post_status'      => 'draft, publish, future, pending, private',
4732          'suppress_filters' => true,
4733      );
4734  
4735      /** @var array{ fields: null, ... } $parsed_args */
4736      $parsed_args = wp_parse_args( $args, $defaults );
4737  
4738      $results = get_posts( $parsed_args );
4739  
4740      // Backward compatibility. Prior to 3.1 expected posts to be returned in array.
4741      if ( ARRAY_A === $output ) {
4742          $posts = array();
4743          foreach ( $results as $key => $result ) {
4744              /** @var non-empty-array<string, mixed> $object_vars */
4745              $object_vars   = get_object_vars( $result );
4746              $posts[ $key ] = $object_vars;
4747          }
4748          return $posts;
4749      }
4750  
4751      return $results ? $results : false;
4752  }
4753  
4754  /**
4755   * Inserts or updates a post in the database.
4756   *
4757   * If the `$postarr` parameter contains an 'ID', the corresponding post will be updated.
4758   * If not, a new post will be created using the values provided.
4759   *
4760   * You can set the post date manually, by setting the values for 'post_date'
4761   * and 'post_date_gmt' keys. You can close the comments or open the comments by
4762   * setting the value for 'comment_status' key.
4763   *
4764   * @since 1.0.0
4765   * @since 2.6.0 Added the `$wp_error` parameter to allow a WP_Error to be returned on failure.
4766   * @since 4.2.0 Support was added for encoding emoji in the post title, content, and excerpt.
4767   * @since 4.4.0 A 'meta_input' array can now be passed to `$postarr` to add post meta data.
4768   * @since 5.6.0 Added the `$fire_after_hooks` parameter.
4769   *
4770   * @see sanitize_post()
4771   * @global wpdb $wpdb WordPress database abstraction object.
4772   *
4773   * @param array $postarr {
4774   *     An array of elements that make up a post to update or insert.
4775   *
4776   *     @type int    $ID                    The post ID. If equal to something other than 0,
4777   *                                         the post with that ID will be updated. Default 0.
4778   *     @type int    $post_author           The ID of the user who added the post. Default is
4779   *                                         the current user ID.
4780   *     @type string $post_date             The date of the post. Default is the current time.
4781   *     @type string $post_date_gmt         The date of the post in the GMT timezone. Default is
4782   *                                         the value of `$post_date`.
4783   *     @type string $post_content          The post content. Default empty.
4784   *     @type string $post_content_filtered The filtered post content. Default empty.
4785   *     @type string $post_title            The post title. Default empty.
4786   *     @type string $post_excerpt          The post excerpt. Default empty.
4787   *     @type string $post_status           The post status. Default 'draft'.
4788   *     @type string $post_type             The post type. Default 'post'.
4789   *     @type string $comment_status        Whether the post can accept comments. Accepts 'open' or 'closed'.
4790   *                                         Default is the value of 'default_comment_status' option.
4791   *     @type string $ping_status           Whether the post can accept pings. Accepts 'open' or 'closed'.
4792   *                                         Default is the value of 'default_ping_status' option.
4793   *     @type string $post_password         The password to access the post. Default empty.
4794   *     @type string $post_name             The post name. Default is the sanitized post title
4795   *                                         when creating a new post.
4796   *     @type string $to_ping               Space or carriage return-separated list of URLs to ping.
4797   *                                         Default empty.
4798   *     @type string $pinged                Space or carriage return-separated list of URLs that have
4799   *                                         been pinged. Default empty.
4800   *     @type int    $post_parent           Set this for the post it belongs to, if any. Default 0.
4801   *     @type int    $menu_order            The order the post should be displayed in. Default 0.
4802   *     @type string $post_mime_type        The mime type of the post. Default empty.
4803   *     @type string $guid                  Global Unique ID for referencing the post. Default empty.
4804   *     @type int    $import_id             The post ID to be used when inserting a new post.
4805   *                                         If specified, must not match any existing post ID. Default 0.
4806   *     @type int[]  $post_category         Array of category IDs.
4807   *                                         Defaults to value of the 'default_category' option.
4808   *     @type array  $tags_input            Array of tag names, slugs, or IDs. Default empty.
4809   *     @type array  $tax_input             An array of taxonomy terms keyed by their taxonomy name.
4810   *                                         If the taxonomy is hierarchical, the term list needs to be
4811   *                                         either an array of term IDs or a comma-separated string of IDs.
4812   *                                         If the taxonomy is non-hierarchical, the term list can be an array
4813   *                                         that contains term names or slugs, or a comma-separated string
4814   *                                         of names or slugs. This is because, in hierarchical taxonomy,
4815   *                                         child terms can have the same names with different parent terms,
4816   *                                         so the only way to connect them is using ID. Default empty.
4817   *     @type array  $meta_input            Array of post meta values keyed by their post meta key. Default empty.
4818   *     @type string $page_template         Page template to use.
4819   * }
4820   * @param bool  $wp_error         Optional. Whether to return a WP_Error on failure. Default false.
4821   * @param bool  $fire_after_hooks Optional. Whether to fire the after insert hooks. Default true.
4822   * @return int|WP_Error The post ID on success. The value 0 or WP_Error on failure.
4823   *
4824   * @phpstan-return (
4825   *     $wp_error is false ? int : int|WP_Error
4826   * )
4827   */
4828  function wp_insert_post( $postarr, $wp_error = false, $fire_after_hooks = true ) {
4829      global $wpdb;
4830  
4831      // Capture original pre-sanitized array for passing into filters.
4832      $unsanitized_postarr = $postarr;
4833  
4834      $user_id = get_current_user_id();
4835  
4836      $defaults = array(
4837          'post_author'           => $user_id,
4838          'post_content'          => '',
4839          'post_content_filtered' => '',
4840          'post_title'            => '',
4841          'post_excerpt'          => '',
4842          'post_status'           => 'draft',
4843          'post_type'             => 'post',
4844          'comment_status'        => '',
4845          'ping_status'           => '',
4846          'post_password'         => '',
4847          'to_ping'               => '',
4848          'pinged'                => '',
4849          'post_parent'           => 0,
4850          'menu_order'            => 0,
4851          'guid'                  => '',
4852          'import_id'             => 0,
4853          'context'               => '',
4854          'post_date'             => '',
4855          'post_date_gmt'         => '',
4856      );
4857  
4858      $postarr = wp_parse_args( $postarr, $defaults );
4859  
4860      unset( $postarr['filter'] );
4861  
4862      $postarr = sanitize_post( $postarr, 'db' );
4863  
4864      // Are we updating or creating?
4865      $post_id = 0;
4866      $update  = false;
4867      $guid    = $postarr['guid'];
4868  
4869      if ( ! empty( $postarr['ID'] ) ) {
4870          $update = true;
4871  
4872          // Get the post ID and GUID.
4873          $post_id     = $postarr['ID'];
4874          $post_before = get_post( $post_id );
4875  
4876          if ( is_null( $post_before ) ) {
4877              if ( $wp_error ) {
4878                  return new WP_Error( 'invalid_post', __( 'Invalid post ID.' ) );
4879              }
4880              return 0;
4881          }
4882  
4883          $guid            = get_post_field( 'guid', $post_id );
4884          $previous_status = get_post_field( 'post_status', $post_id );
4885      } else {
4886          $previous_status = 'new';
4887          $post_before     = null;
4888      }
4889  
4890      $post_type = empty( $postarr['post_type'] ) ? 'post' : $postarr['post_type'];
4891  
4892      $post_title   = $postarr['post_title'];
4893      $post_content = $postarr['post_content'];
4894      $post_excerpt = $postarr['post_excerpt'];
4895  
4896      if ( isset( $postarr['post_name'] ) ) {
4897          $post_name = $postarr['post_name'];
4898      } elseif ( $update ) {
4899          // For an update, don't modify the post_name if it wasn't supplied as an argument.
4900          $post_name = $post_before->post_name;
4901      }
4902  
4903      $maybe_empty = 'attachment' !== $post_type
4904          && ! $post_content && ! $post_title && ! $post_excerpt
4905          && post_type_supports( $post_type, 'editor' )
4906          && post_type_supports( $post_type, 'title' )
4907          && post_type_supports( $post_type, 'excerpt' );
4908  
4909      /**
4910       * Filters whether the post should be considered "empty".
4911       *
4912       * The post is considered "empty" if both:
4913       * 1. The post type supports the title, editor, and excerpt fields
4914       * 2. The title, editor, and excerpt fields are all empty
4915       *
4916       * Returning a truthy value from the filter will effectively short-circuit
4917       * the new post being inserted and return 0. If $wp_error is true, a WP_Error
4918       * will be returned instead.
4919       *
4920       * @since 3.3.0
4921       *
4922       * @param bool  $maybe_empty Whether the post should be considered "empty".
4923       * @param array $postarr     Array of post data.
4924       */
4925      if ( apply_filters( 'wp_insert_post_empty_content', $maybe_empty, $postarr ) ) {
4926          if ( $wp_error ) {
4927              return new WP_Error( 'empty_content', __( 'Content, title, and excerpt are empty.' ) );
4928          } else {
4929              return 0;
4930          }
4931      }
4932  
4933      $post_status = empty( $postarr['post_status'] ) ? 'draft' : $postarr['post_status'];
4934  
4935      if ( 'attachment' === $post_type && ! in_array( $post_status, array( 'inherit', 'private', 'trash', 'auto-draft' ), true ) ) {
4936          $post_status = 'inherit';
4937      }
4938  
4939      if ( ! empty( $postarr['post_category'] ) ) {
4940          // Filter out empty terms.
4941          $post_category = array_filter( $postarr['post_category'] );
4942      } elseif ( $update && ! isset( $postarr['post_category'] ) ) {
4943          $post_category = $post_before->post_category;
4944      }
4945  
4946      // Make sure we set a valid category.
4947      if ( empty( $post_category ) || 0 === count( $post_category ) || ! is_array( $post_category ) ) {
4948          // 'post' requires at least one category.
4949          if ( 'post' === $post_type && 'auto-draft' !== $post_status ) {
4950              $post_category = array( get_option( 'default_category' ) );
4951          } else {
4952              $post_category = array();
4953          }
4954      }
4955  
4956      /*
4957       * Don't allow contributors to set the post slug for pending review posts.
4958       *
4959       * For new posts check the primitive capability, for updates check the meta capability.
4960       */
4961      if ( 'pending' === $post_status ) {
4962          $post_type_object = get_post_type_object( $post_type );
4963  
4964          if ( ! $update && $post_type_object && ! current_user_can( $post_type_object->cap->publish_posts ) ) {
4965              $post_name = '';
4966          } elseif ( $update && ! current_user_can( 'publish_post', $post_id ) ) {
4967              $post_name = '';
4968          }
4969      }
4970  
4971      /*
4972       * Create a valid post name. Drafts and pending posts are allowed to have
4973       * an empty post name.
4974       */
4975      if ( empty( $post_name ) ) {
4976          if ( ! in_array( $post_status, array( 'draft', 'pending', 'auto-draft' ), true ) ) {
4977              $post_name = sanitize_title( $post_title );
4978          } else {
4979              $post_name = '';
4980          }
4981      } else {
4982          // On updates, we need to check to see if it's using the old, fixed sanitization context.
4983          $check_name = sanitize_title( $post_name, '', 'old-save' );
4984  
4985          if ( $update
4986              && strtolower( urlencode( $post_name ) ) === $check_name
4987              && get_post_field( 'post_name', $post_id ) === $check_name
4988          ) {
4989              $post_name = $check_name;
4990          } else { // New post, or slug has changed.
4991              $post_name = sanitize_title( $post_name );
4992          }
4993      }
4994  
4995      /*
4996       * Resolve the post date from any provided post date or post date GMT strings;
4997       * if none are provided, the date will be set to now.
4998       */
4999      $post_date = wp_resolve_post_date( $postarr['post_date'], $postarr['post_date_gmt'] );
5000  
5001      if ( ! $post_date ) {
5002          if ( $wp_error ) {
5003              return new WP_Error( 'invalid_date', __( 'Invalid date.' ) );
5004          } else {
5005              return 0;
5006          }
5007      }
5008  
5009      if ( empty( $postarr['post_date_gmt'] ) || '0000-00-00 00:00:00' === $postarr['post_date_gmt'] ) {
5010          if ( ! in_array( $post_status, get_post_stati( array( 'date_floating' => true ) ), true ) ) {
5011              $post_date_gmt = get_gmt_from_date( $post_date );
5012          } else {
5013              $post_date_gmt = '0000-00-00 00:00:00';
5014          }
5015      } else {
5016          $post_date_gmt = $postarr['post_date_gmt'];
5017      }
5018  
5019      if ( $update || '0000-00-00 00:00:00' === $post_date ) {
5020          $post_modified     = current_time( 'mysql' );
5021          $post_modified_gmt = current_time( 'mysql', true );
5022      } else {
5023          $post_modified     = $post_date;
5024          $post_modified_gmt = $post_date_gmt;
5025      }
5026  
5027      if ( 'attachment' !== $post_type ) {
5028          $now = gmdate( 'Y-m-d H:i:s' );
5029  
5030          if ( 'publish' === $post_status ) {
5031              if ( strtotime( $post_date_gmt ) - strtotime( $now ) >= MINUTE_IN_SECONDS ) {
5032                  $post_status = 'future';
5033              }
5034          } elseif ( 'future' === $post_status ) {
5035              if ( strtotime( $post_date_gmt ) - strtotime( $now ) < MINUTE_IN_SECONDS ) {
5036                  $post_status = 'publish';
5037              }
5038          }
5039      }
5040  
5041      // Comment status.
5042      if ( empty( $postarr['comment_status'] ) ) {
5043          if ( $update ) {
5044              $comment_status = 'closed';
5045          } else {
5046              $comment_status = get_default_comment_status( $post_type );
5047          }
5048      } else {
5049          $comment_status = $postarr['comment_status'];
5050      }
5051  
5052      // These variables are needed by compact() later.
5053      $post_content_filtered = $postarr['post_content_filtered'];
5054      $post_author           = $postarr['post_author'] ?? $user_id;
5055      $ping_status           = empty( $postarr['ping_status'] ) ? get_default_comment_status( $post_type, 'pingback' ) : $postarr['ping_status'];
5056      $to_ping               = isset( $postarr['to_ping'] ) ? sanitize_trackback_urls( $postarr['to_ping'] ) : '';
5057      $pinged                = $postarr['pinged'] ?? '';
5058      $import_id             = $postarr['import_id'] ?? 0;
5059  
5060      /*
5061       * The 'wp_insert_post_parent' filter expects all variables to be present.
5062       * Previously, these variables would have already been extracted
5063       */
5064      if ( isset( $postarr['menu_order'] ) ) {
5065          $menu_order = (int) $postarr['menu_order'];
5066      } else {
5067          $menu_order = 0;
5068      }
5069  
5070      $post_password = $postarr['post_password'] ?? '';
5071      if ( 'private' === $post_status ) {
5072          $post_password = '';
5073      }
5074  
5075      if ( isset( $postarr['post_parent'] ) ) {
5076          $post_parent = (int) $postarr['post_parent'];
5077      } else {
5078          $post_parent = 0;
5079      }
5080  
5081      $new_postarr = array_merge(
5082          array(
5083              'ID' => $post_id,
5084          ),
5085          compact( array_diff( array_keys( $defaults ), array( 'context', 'filter' ) ) )
5086      );
5087  
5088      /**
5089       * Filters the post parent -- used to check for and prevent hierarchy loops.
5090       *
5091       * @since 3.1.0
5092       *
5093       * @param int   $post_parent Post parent ID.
5094       * @param int   $post_id     Post ID.
5095       * @param array $new_postarr Array of parsed post data.
5096       * @param array $postarr     Array of sanitized, but otherwise unmodified post data.
5097       */
5098      $post_parent = apply_filters( 'wp_insert_post_parent', $post_parent, $post_id, $new_postarr, $postarr );
5099  
5100      /*
5101       * If the post is being untrashed and it has a desired slug stored in post meta,
5102       * reassign it.
5103       */
5104      if ( 'trash' === $previous_status && 'trash' !== $post_status ) {
5105          $desired_post_slug = get_post_meta( $post_id, '_wp_desired_post_slug', true );
5106  
5107          if ( $desired_post_slug ) {
5108              delete_post_meta( $post_id, '_wp_desired_post_slug' );
5109              $post_name = $desired_post_slug;
5110          }
5111      }
5112  
5113      // If a trashed post has the desired slug, change it and let this post have it.
5114      if ( 'trash' !== $post_status && $post_name ) {
5115          /**
5116           * Filters whether or not to add a `__trashed` suffix to the name of trashed posts that match the name of the updated post.
5117           *
5118           * @since 5.4.0
5119           *
5120           * @param bool   $add_trashed_suffix Whether to attempt to add the suffix.
5121           * @param string $post_name          The name of the post being updated.
5122           * @param int    $post_id            Post ID.
5123           */
5124          $add_trashed_suffix = apply_filters( 'add_trashed_suffix_to_trashed_posts', true, $post_name, $post_id );
5125  
5126          if ( $add_trashed_suffix ) {
5127              wp_add_trashed_suffix_to_post_name_for_trashed_posts( $post_name, $post_id );
5128          }
5129      }
5130  
5131      // When trashing an existing post, change its slug to allow non-trashed posts to use it.
5132      if ( 'trash' === $post_status && 'trash' !== $previous_status && 'new' !== $previous_status ) {
5133          $post_name = wp_add_trashed_suffix_to_post_name_for_post( $post_id );
5134      }
5135  
5136      $post_name = wp_unique_post_slug( $post_name, $post_id, $post_status, $post_type, $post_parent );
5137  
5138      // Don't unslash.
5139      $post_mime_type = $postarr['post_mime_type'] ?? '';
5140  
5141      // Expected_slashed (everything!).
5142      $data = compact(
5143          'post_author',
5144          'post_date',
5145          'post_date_gmt',
5146          'post_content',
5147          'post_content_filtered',
5148          'post_title',
5149          'post_excerpt',
5150          'post_status',
5151          'post_type',
5152          'comment_status',
5153          'ping_status',
5154          'post_password',
5155          'post_name',
5156          'to_ping',
5157          'pinged',
5158          'post_modified',
5159          'post_modified_gmt',
5160          'post_parent',
5161          'menu_order',
5162          'post_mime_type',
5163          'guid'
5164      );
5165  
5166      $emoji_fields = array( 'post_title', 'post_content', 'post_excerpt' );
5167  
5168      foreach ( $emoji_fields as $emoji_field ) {
5169          if ( isset( $data[ $emoji_field ] ) ) {
5170              $charset = $wpdb->get_col_charset( $wpdb->posts, $emoji_field );
5171  
5172              // The 'utf8' character set is a deprecated alias of 'utf8mb3'. See <https://dev.mysql.com/doc/refman/8.4/en/charset-unicode-utf8.html>.
5173              if ( 'utf8' === $charset || 'utf8mb3' === $charset ) {
5174                  $data[ $emoji_field ] = wp_encode_emoji( $data[ $emoji_field ] );
5175              }
5176          }
5177      }
5178  
5179      if ( 'attachment' === $post_type ) {
5180          /**
5181           * Filters attachment post data before it is updated in or added to the database.
5182           *
5183           * @since 3.9.0
5184           * @since 5.4.1 The `$unsanitized_postarr` parameter was added.
5185           * @since 6.0.0 The `$update` parameter was added.
5186           *
5187           * @param array $data                An array of slashed, sanitized, and processed attachment post data.
5188           * @param array $postarr             An array of slashed and sanitized attachment post data, but not processed.
5189           * @param array $unsanitized_postarr An array of slashed yet *unsanitized* and unprocessed attachment post data
5190           *                                   as originally passed to wp_insert_post().
5191           * @param bool  $update              Whether this is an existing attachment post being updated.
5192           */
5193          $data = apply_filters( 'wp_insert_attachment_data', $data, $postarr, $unsanitized_postarr, $update );
5194      } else {
5195          /**
5196           * Filters slashed post data just before it is inserted into the database.
5197           *
5198           * @since 2.7.0
5199           * @since 5.4.1 The `$unsanitized_postarr` parameter was added.
5200           * @since 6.0.0 The `$update` parameter was added.
5201           *
5202           * @param array $data                An array of slashed, sanitized, and processed post data.
5203           * @param array $postarr             An array of sanitized (and slashed) but otherwise unmodified post data.
5204           * @param array $unsanitized_postarr An array of slashed yet *unsanitized* and unprocessed post data as
5205           *                                   originally passed to wp_insert_post().
5206           * @param bool  $update              Whether this is an existing post being updated.
5207           */
5208          $data = apply_filters( 'wp_insert_post_data', $data, $postarr, $unsanitized_postarr, $update );
5209      }
5210  
5211      $data  = wp_unslash( $data );
5212      $where = array( 'ID' => $post_id );
5213  
5214      if ( $update ) {
5215          /**
5216           * Fires immediately before an existing post is updated in the database.
5217           *
5218           * @since 2.5.0
5219           *
5220           * @param int   $post_id Post ID.
5221           * @param array $data    Array of unslashed post data.
5222           */
5223          do_action( 'pre_post_update', $post_id, $data );
5224  
5225          if ( false === $wpdb->update( $wpdb->posts, $data, $where ) ) {
5226              if ( $wp_error ) {
5227                  if ( 'attachment' === $post_type ) {
5228                      $message = __( 'Could not update attachment in the database.' );
5229                  } else {
5230                      $message = __( 'Could not update post in the database.' );
5231                  }
5232  
5233                  return new WP_Error( 'db_update_error', $message, $wpdb->last_error );
5234              } else {
5235                  return 0;
5236              }
5237          }
5238      } else {
5239          // If there is a suggested ID, use it if not already present.
5240          if ( ! empty( $import_id ) ) {
5241              $import_id = (int) $import_id;
5242  
5243              if ( ! $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE ID = %d", $import_id ) ) ) {
5244                  $data['ID'] = $import_id;
5245              }
5246          }
5247  
5248          /**
5249           * Fires immediately before a new post is inserted in the database.
5250           *
5251           * @since 6.9.0
5252           *
5253           * @param array $data Array of unslashed post data.
5254           */
5255          do_action( 'pre_post_insert', $data );
5256  
5257          if ( false === $wpdb->insert( $wpdb->posts, $data ) ) {
5258              if ( $wp_error ) {
5259                  if ( 'attachment' === $post_type ) {
5260                      $message = __( 'Could not insert attachment into the database.' );
5261                  } else {
5262                      $message = __( 'Could not insert post into the database.' );
5263                  }
5264  
5265                  return new WP_Error( 'db_insert_error', $message, $wpdb->last_error );
5266              } else {
5267                  return 0;
5268              }
5269          }
5270  
5271          $post_id = (int) $wpdb->insert_id;
5272  
5273          // Use the newly generated $post_id.
5274          $where = array( 'ID' => $post_id );
5275      }
5276  
5277      if ( empty( $data['post_name'] ) && ! in_array( $data['post_status'], array( 'draft', 'pending', 'auto-draft' ), true ) ) {
5278          $data['post_name'] = wp_unique_post_slug( sanitize_title( $data['post_title'], $post_id ), $post_id, $data['post_status'], $post_type, $post_parent );
5279  
5280          $wpdb->update( $wpdb->posts, array( 'post_name' => $data['post_name'] ), $where );
5281          clean_post_cache( $post_id );
5282      }
5283  
5284      if ( is_object_in_taxonomy( $post_type, 'category' ) ) {
5285          wp_set_post_categories( $post_id, $post_category );
5286      }
5287  
5288      if ( isset( $postarr['tags_input'] ) && is_object_in_taxonomy( $post_type, 'post_tag' ) ) {
5289          wp_set_post_tags( $post_id, $postarr['tags_input'] );
5290      }
5291  
5292      // Add default term for all associated custom taxonomies.
5293      if ( 'auto-draft' !== $post_status ) {
5294          foreach ( get_object_taxonomies( $post_type, 'object' ) as $taxonomy => $tax_object ) {
5295  
5296              if ( ! empty( $tax_object->default_term ) ) {
5297  
5298                  // Filter out empty terms.
5299                  if ( isset( $postarr['tax_input'][ $taxonomy ] ) && is_array( $postarr['tax_input'][ $taxonomy ] ) ) {
5300                      $postarr['tax_input'][ $taxonomy ] = array_filter( $postarr['tax_input'][ $taxonomy ] );
5301                  }
5302  
5303                  // Passed custom taxonomy list overwrites the existing list if not empty.
5304                  $terms = wp_get_object_terms( $post_id, $taxonomy, array( 'fields' => 'ids' ) );
5305                  if ( ! empty( $terms ) && empty( $postarr['tax_input'][ $taxonomy ] ) ) {
5306                      $postarr['tax_input'][ $taxonomy ] = $terms;
5307                  }
5308  
5309                  if ( empty( $postarr['tax_input'][ $taxonomy ] ) ) {
5310                      $default_term_id = get_option( 'default_term_' . $taxonomy );
5311                      if ( ! empty( $default_term_id ) ) {
5312                          $postarr['tax_input'][ $taxonomy ] = array( (int) $default_term_id );
5313                      }
5314                  }
5315              }
5316          }
5317      }
5318  
5319      // New-style support for all custom taxonomies.
5320      if ( ! empty( $postarr['tax_input'] ) ) {
5321          foreach ( $postarr['tax_input'] as $taxonomy => $tags ) {
5322              $taxonomy_obj = get_taxonomy( $taxonomy );
5323  
5324              if ( ! $taxonomy_obj ) {
5325                  /* translators: %s: Taxonomy name. */
5326                  _doing_it_wrong( __FUNCTION__, sprintf( __( 'Invalid taxonomy: %s.' ), $taxonomy ), '4.4.0' );
5327                  continue;
5328              }
5329  
5330              // array = hierarchical, string = non-hierarchical.
5331              if ( is_array( $tags ) ) {
5332                  $tags = array_filter( $tags );
5333              }
5334  
5335              if ( current_user_can( $taxonomy_obj->cap->assign_terms ) ) {
5336                  wp_set_post_terms( $post_id, $tags, $taxonomy );
5337              }
5338          }
5339      }
5340  
5341      if ( ! empty( $postarr['meta_input'] ) ) {
5342          foreach ( $postarr['meta_input'] as $field => $value ) {
5343              update_post_meta( $post_id, $field, $value );
5344          }
5345      }
5346  
5347      $current_guid = get_post_field( 'guid', $post_id );
5348  
5349      // Set GUID.
5350      if ( ! $update && '' === $current_guid ) {
5351          $wpdb->update( $wpdb->posts, array( 'guid' => get_permalink( $post_id ) ), $where );
5352      }
5353  
5354      if ( 'attachment' === $postarr['post_type'] ) {
5355          if ( ! empty( $postarr['file'] ) ) {
5356              update_attached_file( $post_id, $postarr['file'] );
5357          }
5358  
5359          if ( ! empty( $postarr['context'] ) ) {
5360              add_post_meta( $post_id, '_wp_attachment_context', $postarr['context'], true );
5361          }
5362      }
5363  
5364      // Set or remove featured image.
5365      if ( isset( $postarr['_thumbnail_id'] ) ) {
5366          $thumbnail_support = current_theme_supports( 'post-thumbnails', $post_type ) && post_type_supports( $post_type, 'thumbnail' ) || 'revision' === $post_type;
5367  
5368          if ( ! $thumbnail_support && 'attachment' === $post_type && $post_mime_type ) {
5369              if ( wp_attachment_is( 'audio', $post_id ) ) {
5370                  $thumbnail_support = post_type_supports( 'attachment:audio', 'thumbnail' ) || current_theme_supports( 'post-thumbnails', 'attachment:audio' );
5371              } elseif ( wp_attachment_is( 'video', $post_id ) ) {
5372                  $thumbnail_support = post_type_supports( 'attachment:video', 'thumbnail' ) || current_theme_supports( 'post-thumbnails', 'attachment:video' );
5373              }
5374          }
5375  
5376          if ( $thumbnail_support ) {
5377              $thumbnail_id = (int) $postarr['_thumbnail_id'];
5378              if ( -1 === $thumbnail_id ) {
5379                  delete_post_thumbnail( $post_id );
5380              } else {
5381                  set_post_thumbnail( $post_id, $thumbnail_id );
5382              }
5383          }
5384      }
5385  
5386      clean_post_cache( $post_id );
5387  
5388      $post = get_post( $post_id );
5389  
5390      if ( ! empty( $postarr['page_template'] ) ) {
5391          $post->page_template = $postarr['page_template'];
5392          $page_templates      = wp_get_theme()->get_page_templates( $post );
5393  
5394          if ( 'default' !== $postarr['page_template'] && ! isset( $page_templates[ $postarr['page_template'] ] ) ) {
5395              if ( $wp_error ) {
5396                  return new WP_Error( 'invalid_page_template', __( 'Invalid page template.' ) );
5397              }
5398  
5399              update_post_meta( $post_id, '_wp_page_template', 'default' );
5400          } else {
5401              update_post_meta( $post_id, '_wp_page_template', $postarr['page_template'] );
5402          }
5403      }
5404  
5405      if ( 'attachment' !== $postarr['post_type'] ) {
5406          wp_transition_post_status( $data['post_status'], $previous_status, $post );
5407      } else {
5408          if ( $update ) {
5409              /**
5410               * Fires once an existing attachment has been updated.
5411               *
5412               * @since 2.0.0
5413               *
5414               * @param int $post_id Attachment ID.
5415               */
5416              do_action( 'edit_attachment', $post_id );
5417  
5418              $post_after = get_post( $post_id );
5419  
5420              /**
5421               * Fires once an existing attachment has been updated.
5422               *
5423               * @since 4.4.0
5424               *
5425               * @param int     $post_id      Post ID.
5426               * @param WP_Post $post_after   Post object following the update.
5427               * @param WP_Post $post_before  Post object before the update.
5428               */
5429              do_action( 'attachment_updated', $post_id, $post_after, $post_before );
5430          } else {
5431  
5432              /**
5433               * Fires once an attachment has been added.
5434               *
5435               * @since 2.0.0
5436               *
5437               * @param int $post_id Attachment ID.
5438               */
5439              do_action( 'add_attachment', $post_id );
5440          }
5441  
5442          return $post_id;
5443      }
5444  
5445      if ( $update ) {
5446          /**
5447           * Fires once an existing post has been updated.
5448           *
5449           * The dynamic portion of the hook name, `$post->post_type`, refers to
5450           * the post type slug.
5451           *
5452           * Possible hook names include:
5453           *
5454           *  - `edit_post_post`
5455           *  - `edit_post_page`
5456           *
5457           * @since 5.1.0
5458           *
5459           * @param int     $post_id Post ID.
5460           * @param WP_Post $post    Post object.
5461           */
5462          do_action( "edit_post_{$post->post_type}", $post_id, $post );
5463  
5464          /**
5465           * Fires once an existing post has been updated.
5466           *
5467           * @since 1.2.0
5468           *
5469           * @param int     $post_id Post ID.
5470           * @param WP_Post $post    Post object.
5471           */
5472          do_action( 'edit_post', $post_id, $post );
5473  
5474          $post_after = get_post( $post_id );
5475  
5476          /**
5477           * Fires once an existing post has been updated.
5478           *
5479           * @since 3.0.0
5480           *
5481           * @param int     $post_id      Post ID.
5482           * @param WP_Post $post_after   Post object following the update.
5483           * @param WP_Post $post_before  Post object before the update.
5484           */
5485          do_action( 'post_updated', $post_id, $post_after, $post_before );
5486      }
5487  
5488      /**
5489       * Fires once a post has been saved.
5490       *
5491       * The dynamic portion of the hook name, `$post->post_type`, refers to
5492       * the post type slug.
5493       *
5494       * Possible hook names include:
5495       *
5496       *  - `save_post_post`
5497       *  - `save_post_page`
5498       *
5499       * @since 3.7.0
5500       *
5501       * @param int     $post_id Post ID.
5502       * @param WP_Post $post    Post object.
5503       * @param bool    $update  Whether this is an existing post being updated.
5504       */
5505      do_action( "save_post_{$post->post_type}", $post_id, $post, $update );
5506  
5507      /**
5508       * Fires once a post has been saved.
5509       *
5510       * @since 1.5.0
5511       *
5512       * @param int     $post_id Post ID.
5513       * @param WP_Post $post    Post object.
5514       * @param bool    $update  Whether this is an existing post being updated.
5515       */
5516      do_action( 'save_post', $post_id, $post, $update );
5517  
5518      /**
5519       * Fires once a post has been saved.
5520       *
5521       * @since 2.0.0
5522       *
5523       * @param int     $post_id Post ID.
5524       * @param WP_Post $post    Post object.
5525       * @param bool    $update  Whether this is an existing post being updated.
5526       */
5527      do_action( 'wp_insert_post', $post_id, $post, $update );
5528  
5529      if ( $fire_after_hooks ) {
5530          wp_after_insert_post( $post, $update, $post_before );
5531      }
5532  
5533      return $post_id;
5534  }
5535  
5536  /**
5537   * Updates a post with new post data.
5538   *
5539   * The date does not have to be set for drafts. You can set the date and it will
5540   * not be overridden.
5541   *
5542   * @since 1.0.0
5543   * @since 3.5.0 Added the `$wp_error` parameter to allow a WP_Error to be returned on failure.
5544   * @since 5.6.0 Added the `$fire_after_hooks` parameter.
5545   *
5546   * @param array|object $postarr          Optional. Post data. Arrays are expected to be escaped,
5547   *                                       objects are not. See wp_insert_post() for accepted arguments.
5548   *                                       Default array.
5549   * @param bool         $wp_error         Optional. Whether to return a WP_Error on failure. Default false.
5550   * @param bool         $fire_after_hooks Optional. Whether to fire the after insert hooks. Default true.
5551   * @return int|WP_Error The post ID on success. The value 0 or WP_Error on failure.
5552   *
5553   * @phpstan-return (
5554   *     $wp_error is false ? int : int|WP_Error
5555   * )
5556   */
5557  function wp_update_post( $postarr = array(), $wp_error = false, $fire_after_hooks = true ) {
5558      if ( is_object( $postarr ) ) {
5559          // Non-escaped post was passed.
5560          $postarr = get_object_vars( $postarr );
5561          $postarr = wp_slash( $postarr );
5562      }
5563  
5564      // First, get all of the original fields.
5565      $post = get_post( $postarr['ID'], ARRAY_A );
5566  
5567      if ( is_null( $post ) ) {
5568          if ( $wp_error ) {
5569              return new WP_Error( 'invalid_post', __( 'Invalid post ID.' ) );
5570          }
5571          return 0;
5572      }
5573  
5574      // Escape data pulled from DB.
5575      $post = wp_slash( $post );
5576  
5577      // Passed post category list overwrites existing category list if not empty.
5578      if ( isset( $postarr['post_category'] ) && is_array( $postarr['post_category'] )
5579          && count( $postarr['post_category'] ) > 0
5580      ) {
5581          $post_cats = $postarr['post_category'];
5582      } else {
5583          $post_cats = $post['post_category'];
5584      }
5585  
5586      // Drafts shouldn't be assigned a date unless explicitly done so by the user.
5587      if ( isset( $post['post_status'] )
5588          && in_array( $post['post_status'], array( 'draft', 'pending', 'auto-draft' ), true )
5589          && empty( $postarr['edit_date'] ) && ( '0000-00-00 00:00:00' === $post['post_date_gmt'] )
5590      ) {
5591          $clear_date = true;
5592      } else {
5593          $clear_date = false;
5594      }
5595  
5596      // Merge old and new fields with new fields overwriting old ones.
5597      $postarr                  = array_merge( $post, $postarr );
5598      $postarr['post_category'] = $post_cats;
5599      if ( $clear_date ) {
5600          $postarr['post_date']     = current_time( 'mysql' );
5601          $postarr['post_date_gmt'] = '';
5602      }
5603  
5604      if ( 'attachment' === $postarr['post_type'] ) {
5605          return wp_insert_attachment( $postarr, false, 0, $wp_error );
5606      }
5607  
5608      // Discard 'tags_input' parameter if it's the same as existing post tags.
5609      if ( isset( $postarr['tags_input'] ) && is_object_in_taxonomy( $postarr['post_type'], 'post_tag' ) ) {
5610          $tags      = get_the_terms( $postarr['ID'], 'post_tag' );
5611          $tag_names = array();
5612  
5613          if ( $tags && ! is_wp_error( $tags ) ) {
5614              $tag_names = wp_list_pluck( $tags, 'name' );
5615          }
5616  
5617          if ( $postarr['tags_input'] === $tag_names ) {
5618              unset( $postarr['tags_input'] );
5619          }
5620      }
5621  
5622      return wp_insert_post( $postarr, $wp_error, $fire_after_hooks );
5623  }
5624  
5625  /**
5626   * Publishes a post by transitioning the post status.
5627   *
5628   * @since 2.1.0
5629   *
5630   * @global wpdb $wpdb WordPress database abstraction object.
5631   *
5632   * @param int|WP_Post $post Post ID or post object.
5633   */
5634  function wp_publish_post( $post ) {
5635      global $wpdb;
5636  
5637      $post = get_post( $post );
5638  
5639      if ( ! $post ) {
5640          return;
5641      }
5642  
5643      if ( 'publish' === $post->post_status ) {
5644          return;
5645      }
5646  
5647      $post_before = get_post( $post->ID );
5648  
5649      // Ensure at least one term is applied for taxonomies with a default term.
5650      foreach ( get_object_taxonomies( $post->post_type, 'object' ) as $taxonomy => $tax_object ) {
5651          // Skip taxonomy if no default term is set.
5652          if (
5653              'category' !== $taxonomy &&
5654              empty( $tax_object->default_term )
5655          ) {
5656              continue;
5657          }
5658  
5659          // Do not modify previously set terms.
5660          if ( ! empty( get_the_terms( $post, $taxonomy ) ) ) {
5661              continue;
5662          }
5663  
5664          if ( 'category' === $taxonomy ) {
5665              $default_term_id = (int) get_option( 'default_category', 0 );
5666          } else {
5667              $default_term_id = (int) get_option( 'default_term_' . $taxonomy, 0 );
5668          }
5669  
5670          if ( ! $default_term_id ) {
5671              continue;
5672          }
5673          wp_set_post_terms( $post->ID, array( $default_term_id ), $taxonomy );
5674      }
5675  
5676      $wpdb->update( $wpdb->posts, array( 'post_status' => 'publish' ), array( 'ID' => $post->ID ) );
5677  
5678      clean_post_cache( $post->ID );
5679  
5680      $old_status        = $post->post_status;
5681      $post->post_status = 'publish';
5682      wp_transition_post_status( 'publish', $old_status, $post );
5683  
5684      /** This action is documented in wp-includes/post.php */
5685      do_action( "edit_post_{$post->post_type}", $post->ID, $post );
5686  
5687      /** This action is documented in wp-includes/post.php */
5688      do_action( 'edit_post', $post->ID, $post );
5689  
5690      /** This action is documented in wp-includes/post.php */
5691      do_action( "save_post_{$post->post_type}", $post->ID, $post, true );
5692  
5693      /** This action is documented in wp-includes/post.php */
5694      do_action( 'save_post', $post->ID, $post, true );
5695  
5696      /** This action is documented in wp-includes/post.php */
5697      do_action( 'wp_insert_post', $post->ID, $post, true );
5698  
5699      wp_after_insert_post( $post, true, $post_before );
5700  }
5701  
5702  /**
5703   * Publishes future post and make sure post ID has future post status.
5704   *
5705   * Invoked by cron 'publish_future_post' event. This safeguard prevents cron
5706   * from publishing drafts, etc.
5707   *
5708   * @since 2.5.0
5709   *
5710   * @param int|WP_Post $post Post ID or post object.
5711   */
5712  function check_and_publish_future_post( $post ) {
5713      $post = get_post( $post );
5714  
5715      if ( ! $post ) {
5716          return;
5717      }
5718  
5719      if ( 'future' !== $post->post_status ) {
5720          return;
5721      }
5722  
5723      $time = strtotime( $post->post_date_gmt . ' GMT' );
5724  
5725      // Uh oh, someone jumped the gun!
5726      if ( $time > time() ) {
5727          wp_clear_scheduled_hook( 'publish_future_post', array( $post->ID ) ); // Clear anything else in the system.
5728          wp_schedule_single_event( $time, 'publish_future_post', array( $post->ID ) );
5729          return;
5730      }
5731  
5732      // wp_publish_post() returns no meaningful value.
5733      wp_publish_post( $post->ID );
5734  }
5735  
5736  /**
5737   * Uses wp_checkdate to return a valid Gregorian-calendar value for post_date.
5738   * If post_date is not provided, this first checks post_date_gmt if provided,
5739   * then falls back to use the current time.
5740   *
5741   * For back-compat purposes in wp_insert_post, an empty post_date and an invalid
5742   * post_date_gmt will continue to return '1970-01-01 00:00:00' rather than false.
5743   *
5744   * @since 5.7.0
5745   *
5746   * @param string $post_date     The date in mysql format (`Y-m-d H:i:s`).
5747   * @param string $post_date_gmt The GMT date in mysql format (`Y-m-d H:i:s`).
5748   * @return string|false A valid Gregorian-calendar date string, or false on failure.
5749   */
5750  function wp_resolve_post_date( $post_date = '', $post_date_gmt = '' ) {
5751      // If the date is empty, set the date to now.
5752      if ( empty( $post_date ) || '0000-00-00 00:00:00' === $post_date ) {
5753          if ( empty( $post_date_gmt ) || '0000-00-00 00:00:00' === $post_date_gmt ) {
5754              $post_date = current_time( 'mysql' );
5755          } else {
5756              $post_date = get_date_from_gmt( $post_date_gmt );
5757          }
5758      }
5759  
5760      // Validate the date.
5761      preg_match( '/^(\d{4})-(\d{1,2})-(\d{1,2})/', $post_date, $matches );
5762  
5763      if ( empty( $matches ) || ! is_array( $matches ) || count( $matches ) < 4 ) {
5764          return false;
5765      }
5766  
5767      $valid_date = wp_checkdate( $matches[2], $matches[3], $matches[1], $post_date );
5768  
5769      if ( ! $valid_date ) {
5770          return false;
5771      }
5772      return $post_date;
5773  }
5774  
5775  /**
5776   * Computes a unique slug for the post, when given the desired slug and some post details.
5777   *
5778   * @since 2.8.0
5779   *
5780   * @global wpdb       $wpdb       WordPress database abstraction object.
5781   * @global WP_Rewrite $wp_rewrite WordPress rewrite component.
5782   *
5783   * @param string $slug        The desired slug (post_name).
5784   * @param int    $post_id     Post ID.
5785   * @param string $post_status No uniqueness checks are made if the post is still draft or pending.
5786   * @param string $post_type   Post type.
5787   * @param int    $post_parent Post parent ID.
5788   * @return string Unique slug for the post, based on $post_name (with a -1, -2, etc. suffix)
5789   */
5790  function wp_unique_post_slug( $slug, $post_id, $post_status, $post_type, $post_parent ) {
5791      if ( in_array( $post_status, array( 'draft', 'pending', 'auto-draft' ), true )
5792          || ( 'inherit' === $post_status && 'revision' === $post_type ) || 'user_request' === $post_type
5793      ) {
5794          return $slug;
5795      }
5796  
5797      /**
5798       * Filters the post slug before it is generated to be unique.
5799       *
5800       * Returning a non-null value will short-circuit the
5801       * unique slug generation, returning the passed value instead.
5802       *
5803       * @since 5.1.0
5804       *
5805       * @param string|null $override_slug Short-circuit return value.
5806       * @param string      $slug          The desired slug (post_name).
5807       * @param int         $post_id       Post ID.
5808       * @param string      $post_status   The post status.
5809       * @param string      $post_type     Post type.
5810       * @param int         $post_parent   Post parent ID.
5811       */
5812      $override_slug = apply_filters( 'pre_wp_unique_post_slug', null, $slug, $post_id, $post_status, $post_type, $post_parent );
5813      if ( null !== $override_slug ) {
5814          return $override_slug;
5815      }
5816  
5817      global $wpdb, $wp_rewrite;
5818  
5819      $original_slug = $slug;
5820  
5821      $feeds = $wp_rewrite->feeds;
5822      if ( ! is_array( $feeds ) ) {
5823          $feeds = array();
5824      }
5825  
5826      if ( 'attachment' === $post_type ) {
5827          // Attachment slugs must be unique across all types.
5828          $check_sql       = "SELECT post_name FROM $wpdb->posts WHERE post_name = %s AND ID != %d LIMIT 1";
5829          $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $slug, $post_id ) );
5830  
5831          /**
5832           * Filters whether the post slug would make a bad attachment slug.
5833           *
5834           * @since 3.1.0
5835           *
5836           * @param bool   $bad_slug Whether the slug would be bad as an attachment slug.
5837           * @param string $slug     The post slug.
5838           */
5839          $is_bad_attachment_slug = apply_filters( 'wp_unique_post_slug_is_bad_attachment_slug', false, $slug );
5840  
5841          if ( $post_name_check
5842              || in_array( $slug, $feeds, true ) || 'embed' === $slug
5843              || $is_bad_attachment_slug
5844          ) {
5845              $suffix = 2;
5846              do {
5847                  $alt_post_name   = wp_truncate_slug( $slug, 200 - ( strlen( $suffix ) + 1 ) ) . "-$suffix";
5848                  $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $alt_post_name, $post_id ) );
5849                  ++$suffix;
5850              } while ( $post_name_check );
5851              $slug = $alt_post_name;
5852          }
5853      } elseif ( is_post_type_hierarchical( $post_type ) ) {
5854          if ( 'nav_menu_item' === $post_type ) {
5855              return $slug;
5856          }
5857  
5858          /*
5859           * Page slugs must be unique within their own trees. Pages are in a separate
5860           * namespace than posts so page slugs are allowed to overlap post slugs.
5861           */
5862          $check_sql       = "SELECT post_name FROM $wpdb->posts WHERE post_name = %s AND post_type IN ( %s, 'attachment' ) AND ID != %d AND post_parent = %d LIMIT 1";
5863          $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $slug, $post_type, $post_id, $post_parent ) );
5864  
5865          /**
5866           * Filters whether the post slug would make a bad hierarchical post slug.
5867           *
5868           * @since 3.1.0
5869           *
5870           * @param bool   $bad_slug    Whether the post slug would be bad in a hierarchical post context.
5871           * @param string $slug        The post slug.
5872           * @param string $post_type   Post type.
5873           * @param int    $post_parent Post parent ID.
5874           */
5875          $is_bad_hierarchical_slug = apply_filters( 'wp_unique_post_slug_is_bad_hierarchical_slug', false, $slug, $post_type, $post_parent );
5876  
5877          if ( $post_name_check
5878              || in_array( $slug, $feeds, true ) || 'embed' === $slug
5879              || preg_match( "@^($wp_rewrite->pagination_base)?\d+$@", $slug )
5880              || $is_bad_hierarchical_slug
5881          ) {
5882              $suffix = 2;
5883              do {
5884                  $alt_post_name   = wp_truncate_slug( $slug, 200 - ( strlen( $suffix ) + 1 ) ) . "-$suffix";
5885                  $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $alt_post_name, $post_type, $post_id, $post_parent ) );
5886                  ++$suffix;
5887              } while ( $post_name_check );
5888              $slug = $alt_post_name;
5889          }
5890      } else {
5891          // Post slugs must be unique across all posts.
5892          $check_sql       = "SELECT post_name FROM $wpdb->posts WHERE post_name = %s AND post_type = %s AND ID != %d LIMIT 1";
5893          $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $slug, $post_type, $post_id ) );
5894  
5895          $post = get_post( $post_id );
5896  
5897          // Prevent new post slugs that could result in URLs that conflict with date archives.
5898          $conflicts_with_date_archive = false;
5899          if ( 'post' === $post_type && ( ! $post || $post->post_name !== $slug ) && preg_match( '/^[0-9]+$/', $slug ) ) {
5900              $slug_num = (int) $slug;
5901  
5902              if ( $slug_num ) {
5903                  $permastructs   = array_values( array_filter( explode( '/', get_option( 'permalink_structure' ) ) ) );
5904                  $postname_index = array_search( '%postname%', $permastructs, true );
5905  
5906                  /*
5907                  * Potential date clashes are as follows:
5908                  *
5909                  * - Any integer in the first permastruct position could be a year.
5910                  * - An integer between 1 and 12 that follows 'year' conflicts with 'monthnum'.
5911                  * - An integer between 1 and 31 that follows 'monthnum' conflicts with 'day'.
5912                  */
5913                  if ( 0 === $postname_index ||
5914                      ( $postname_index && '%year%' === $permastructs[ $postname_index - 1 ] && 13 > $slug_num ) ||
5915                      ( $postname_index && '%monthnum%' === $permastructs[ $postname_index - 1 ] && 32 > $slug_num )
5916                  ) {
5917                      $conflicts_with_date_archive = true;
5918                  }
5919              }
5920          }
5921  
5922          /**
5923           * Filters whether the post slug would be bad as a flat slug.
5924           *
5925           * @since 3.1.0
5926           *
5927           * @param bool   $bad_slug  Whether the post slug would be bad as a flat slug.
5928           * @param string $slug      The post slug.
5929           * @param string $post_type Post type.
5930           */
5931          $is_bad_flat_slug = apply_filters( 'wp_unique_post_slug_is_bad_flat_slug', false, $slug, $post_type );
5932  
5933          if ( $post_name_check
5934              || in_array( $slug, $feeds, true ) || 'embed' === $slug
5935              || $conflicts_with_date_archive
5936              || $is_bad_flat_slug
5937          ) {
5938              $suffix = 2;
5939              do {
5940                  $alt_post_name   = wp_truncate_slug( $slug, 200 - ( strlen( $suffix ) + 1 ) ) . "-$suffix";
5941                  $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $alt_post_name, $post_type, $post_id ) );
5942                  ++$suffix;
5943              } while ( $post_name_check );
5944              $slug = $alt_post_name;
5945          }
5946      }
5947  
5948      /**
5949       * Filters the unique post slug.
5950       *
5951       * @since 3.3.0
5952       *
5953       * @param string $slug          The post slug.
5954       * @param int    $post_id       Post ID.
5955       * @param string $post_status   The post status.
5956       * @param string $post_type     Post type.
5957       * @param int    $post_parent   Post parent ID
5958       * @param string $original_slug The original post slug.
5959       */
5960      return apply_filters( 'wp_unique_post_slug', $slug, $post_id, $post_status, $post_type, $post_parent, $original_slug );
5961  }
5962  
5963  /**
5964   * Adds tags to a post.
5965   *
5966   * @see wp_set_post_tags()
5967   *
5968   * @since 2.3.0
5969   *
5970   * @param int          $post_id Optional. The Post ID. Does not default to the ID of the global $post.
5971   * @param string|array $tags    Optional. An array of tags to set for the post, or a string of tags
5972   *                              separated by commas. Default empty.
5973   * @return array|false|WP_Error Array of affected term IDs. WP_Error or false on failure.
5974   */
5975  function wp_add_post_tags( $post_id = 0, $tags = '' ) {
5976      return wp_set_post_tags( $post_id, $tags, true );
5977  }
5978  
5979  /**
5980   * Sets the tags for a post.
5981   *
5982   * @since 2.3.0
5983   *
5984   * @see wp_set_object_terms()
5985   *
5986   * @param int          $post_id Optional. The Post ID. Does not default to the ID of the global $post.
5987   * @param string|array $tags    Optional. An array of tags to set for the post, or a string of tags
5988   *                              separated by commas. Default empty.
5989   * @param bool         $append  Optional. If true, don't delete existing tags, just add on. If false,
5990   *                              replace the tags with the new tags. Default false.
5991   * @return array|false|WP_Error Array of term taxonomy IDs of affected terms. WP_Error or false on failure.
5992   */
5993  function wp_set_post_tags( $post_id = 0, $tags = '', $append = false ) {
5994      return wp_set_post_terms( $post_id, $tags, 'post_tag', $append );
5995  }
5996  
5997  /**
5998   * Sets the terms for a post.
5999   *
6000   * @since 2.8.0
6001   *
6002   * @see wp_set_object_terms()
6003   *
6004   * @param int          $post_id  Optional. The Post ID. Does not default to the ID of the global $post.
6005   * @param string|array $terms    Optional. An array of terms to set for the post, or a string of terms
6006   *                               separated by commas. Hierarchical taxonomies must always pass IDs rather
6007   *                               than names so that children with the same names but different parents
6008   *                               aren't confused. Default empty.
6009   * @param string       $taxonomy Optional. Taxonomy name. Default 'post_tag'.
6010   * @param bool         $append   Optional. If true, don't delete existing terms, just add on. If false,
6011   *                               replace the terms with the new terms. Default false.
6012   * @return array|false|WP_Error Array of term taxonomy IDs of affected terms. WP_Error or false on failure.
6013   */
6014  function wp_set_post_terms( $post_id = 0, $terms = '', $taxonomy = 'post_tag', $append = false ) {
6015      $post_id = (int) $post_id;
6016  
6017      if ( ! $post_id ) {
6018          return false;
6019      }
6020  
6021      if ( empty( $terms ) ) {
6022          $terms = array();
6023      }
6024  
6025      if ( ! is_array( $terms ) ) {
6026          $comma = _x( ',', 'tag delimiter' );
6027          if ( ',' !== $comma ) {
6028              $terms = str_replace( $comma, ',', $terms );
6029          }
6030          $terms = explode( ',', trim( $terms, " \n\t\r\0\x0B," ) );
6031      }
6032  
6033      /*
6034       * Hierarchical taxonomies must always pass IDs rather than names so that
6035       * children with the same names but different parents aren't confused.
6036       */
6037      if ( is_taxonomy_hierarchical( $taxonomy ) ) {
6038          $terms = array_unique( array_map( 'intval', $terms ) );
6039      }
6040  
6041      return wp_set_object_terms( $post_id, $terms, $taxonomy, $append );
6042  }
6043  
6044  /**
6045   * Sets categories for a post.
6046   *
6047   * If no categories are provided, the default category is used.
6048   *
6049   * @since 2.1.0
6050   *
6051   * @param int       $post_id         Optional. The Post ID. Does not default to the ID
6052   *                                   of the global $post. Default 0.
6053   * @param int[]|int $post_categories Optional. List of category IDs, or the ID of a single category.
6054   *                                   Default empty array.
6055   * @param bool      $append          If true, don't delete existing categories, just add on.
6056   *                                   If false, replace the categories with the new categories.
6057   * @return array|false|WP_Error Array of term taxonomy IDs of affected categories. WP_Error or false on failure.
6058   */
6059  function wp_set_post_categories( $post_id = 0, $post_categories = array(), $append = false ) {
6060      $post_id     = (int) $post_id;
6061      $post_type   = get_post_type( $post_id );
6062      $post_status = get_post_status( $post_id );
6063  
6064      // If $post_categories isn't already an array, make it one.
6065      $post_categories = (array) $post_categories;
6066  
6067      if ( empty( $post_categories ) ) {
6068          /**
6069           * Filters post types (in addition to 'post') that require a default category.
6070           *
6071           * @since 5.5.0
6072           *
6073           * @param string[] $post_types An array of post type names. Default empty array.
6074           */
6075          $default_category_post_types = apply_filters( 'default_category_post_types', array() );
6076  
6077          // Regular posts always require a default category.
6078          $default_category_post_types = array_merge( $default_category_post_types, array( 'post' ) );
6079  
6080          if ( in_array( $post_type, $default_category_post_types, true )
6081              && is_object_in_taxonomy( $post_type, 'category' )
6082              && 'auto-draft' !== $post_status
6083          ) {
6084              $post_categories = array( get_option( 'default_category' ) );
6085              $append          = false;
6086          } else {
6087              $post_categories = array();
6088          }
6089      } elseif ( 1 === count( $post_categories ) && '' === reset( $post_categories ) ) {
6090          return true;
6091      }
6092  
6093      return wp_set_post_terms( $post_id, $post_categories, 'category', $append );
6094  }
6095  
6096  /**
6097   * Fires actions related to the transitioning of a post's status.
6098   *
6099   * When a post is saved, the post status is "transitioned" from one status to another,
6100   * though this does not always mean the status has actually changed before and after
6101   * the save. This function fires a number of action hooks related to that transition:
6102   * the generic {@see 'transition_post_status'} action, as well as the dynamic hooks
6103   * {@see '$old_status_to_$new_status'} and {@see '$new_status_$post->post_type'}. Note
6104   * that the function does not transition the post object in the database.
6105   *
6106   * For instance: When publishing a post for the first time, the post status may transition
6107   * from 'draft' – or some other status – to 'publish'. However, if a post is already
6108   * published and is simply being updated, the "old" and "new" statuses may both be 'publish'
6109   * before and after the transition.
6110   *
6111   * @since 2.3.0
6112   *
6113   * @param string  $new_status Transition to this post status.
6114   * @param string  $old_status Previous post status.
6115   * @param WP_Post $post       Post data.
6116   */
6117  function wp_transition_post_status( $new_status, $old_status, $post ) {
6118      /**
6119       * Fires when a post is transitioned from one status to another.
6120       *
6121       * @since 2.3.0
6122       *
6123       * @param string  $new_status New post status.
6124       * @param string  $old_status Old post status.
6125       * @param WP_Post $post       Post object.
6126       */
6127      do_action( 'transition_post_status', $new_status, $old_status, $post );
6128  
6129      $new_status_object = get_post_status_object( $new_status );
6130      $old_status_valid  = get_post_status_object( $old_status ) || 'new' === $old_status;
6131      $post_type_object  = get_post_type_object( $post->post_type );
6132  
6133      if ( $new_status_object && $old_status_valid ) {
6134          /**
6135           * Fires when a post is transitioned from one status to another.
6136           *
6137           * The dynamic portions of the hook name, `$new_status` and `$old_status`,
6138           * refer to the old and new post statuses, respectively.
6139           *
6140           * Possible hook names include:
6141           *
6142           *  - `draft_to_publish`
6143           *  - `publish_to_trash`
6144           *  - `pending_to_draft`
6145           *
6146           * @since 2.3.0
6147           *
6148           * @param WP_Post $post Post object.
6149           */
6150          do_action( "{$old_status}_to_{$new_status}", $post );
6151      }
6152  
6153      if ( $new_status_object && $post_type_object ) {
6154          /**
6155           * Fires when a post is transitioned from one status to another.
6156           *
6157           * The dynamic portions of the hook name, `$new_status` and `$post->post_type`,
6158           * refer to the new post status and post type, respectively.
6159           *
6160           * Possible hook names include:
6161           *
6162           *  - `draft_post`
6163           *  - `future_post`
6164           *  - `pending_post`
6165           *  - `private_post`
6166           *  - `publish_post`
6167           *  - `trash_post`
6168           *  - `draft_page`
6169           *  - `future_page`
6170           *  - `pending_page`
6171           *  - `private_page`
6172           *  - `publish_page`
6173           *  - `trash_page`
6174           *  - `publish_attachment`
6175           *  - `trash_attachment`
6176           *
6177           * Please note: When this action is hooked using a particular post status (like
6178           * 'publish', as `publish_{$post->post_type}`), it will fire both when a post is
6179           * first transitioned to that status from something else, as well as upon
6180           * subsequent post updates (old and new status are both the same).
6181           *
6182           * Therefore, if you are looking to only fire a callback when a post is first
6183           * transitioned to a status, use the {@see 'transition_post_status'} hook instead.
6184           *
6185           * @since 2.3.0
6186           * @since 5.9.0 Added `$old_status` parameter.
6187           *
6188           * @param int     $post_id    Post ID.
6189           * @param WP_Post $post       Post object.
6190           * @param string  $old_status Old post status.
6191           */
6192          do_action( "{$new_status}_{$post->post_type}", $post->ID, $post, $old_status );
6193      }
6194  }
6195  
6196  /**
6197   * Fires actions after a post, its terms and meta data has been saved.
6198   *
6199   * @since 5.6.0
6200   *
6201   * @param int|WP_Post  $post        The post ID or object that has been saved.
6202   * @param bool         $update      Whether this is an existing post being updated.
6203   * @param null|WP_Post $post_before Null for new posts, the WP_Post object prior
6204   *                                  to the update for updated posts.
6205   */
6206  function wp_after_insert_post( $post, $update, $post_before ) {
6207      $post = get_post( $post );
6208  
6209      if ( ! $post ) {
6210          return;
6211      }
6212  
6213      $post_id = $post->ID;
6214  
6215      /**
6216       * Fires once a post, its terms and meta data has been saved.
6217       *
6218       * @since 5.6.0
6219       *
6220       * @param int          $post_id     Post ID.
6221       * @param WP_Post      $post        Post object.
6222       * @param bool         $update      Whether this is an existing post being updated.
6223       * @param null|WP_Post $post_before Null for new posts, the WP_Post object prior
6224       *                                  to the update for updated posts.
6225       */
6226      do_action( 'wp_after_insert_post', $post_id, $post, $update, $post_before );
6227  }
6228  
6229  //
6230  // Comment, trackback, and pingback functions.
6231  //
6232  
6233  /**
6234   * Adds a URL to those already pinged.
6235   *
6236   * @since 1.5.0
6237   * @since 4.7.0 `$post` can be a WP_Post object.
6238   * @since 4.7.0 `$uri` can be an array of URIs.
6239   *
6240   * @global wpdb $wpdb WordPress database abstraction object.
6241   *
6242   * @param int|WP_Post  $post Post ID or post object.
6243   * @param string|array $uri  Ping URI or array of URIs.
6244   * @return int|false How many rows were updated.
6245   */
6246  function add_ping( $post, $uri ) {
6247      global $wpdb;
6248  
6249      $post = get_post( $post );
6250  
6251      if ( ! $post ) {
6252          return false;
6253      }
6254  
6255      $pung = trim( $post->pinged );
6256      $pung = preg_split( '/\s/', $pung );
6257  
6258      if ( is_array( $uri ) ) {
6259          $pung = array_merge( $pung, $uri );
6260      } else {
6261          $pung[] = $uri;
6262      }
6263      $new = implode( "\n", $pung );
6264  
6265      /**
6266       * Filters the new ping URL to add for the given post.
6267       *
6268       * @since 2.0.0
6269       *
6270       * @param string $new New ping URL to add.
6271       */
6272      $new = apply_filters( 'add_ping', $new );
6273  
6274      $return = $wpdb->update( $wpdb->posts, array( 'pinged' => $new ), array( 'ID' => $post->ID ) );
6275      clean_post_cache( $post->ID );
6276      return $return;
6277  }
6278  
6279  /**
6280   * Retrieves enclosures already enclosed for a post.
6281   *
6282   * @since 1.5.0
6283   *
6284   * @param int $post_id Post ID.
6285   * @return string[] Array of enclosures for the given post.
6286   */
6287  function get_enclosed( $post_id ) {
6288      $custom_fields = get_post_custom( $post_id );
6289      $pung          = array();
6290      if ( ! is_array( $custom_fields ) ) {
6291          return $pung;
6292      }
6293  
6294      foreach ( $custom_fields as $key => $val ) {
6295          if ( 'enclosure' !== $key || ! is_array( $val ) ) {
6296              continue;
6297          }
6298          foreach ( $val as $enc ) {
6299              $enclosure = explode( "\n", $enc );
6300              $pung[]    = trim( $enclosure[0] );
6301          }
6302      }
6303  
6304      /**
6305       * Filters the list of enclosures already enclosed for the given post.
6306       *
6307       * @since 2.0.0
6308       *
6309       * @param string[] $pung    Array of enclosures for the given post.
6310       * @param int      $post_id Post ID.
6311       */
6312      return apply_filters( 'get_enclosed', $pung, $post_id );
6313  }
6314  
6315  /**
6316   * Retrieves URLs already pinged for a post.
6317   *
6318   * @since 1.5.0
6319   *
6320   * @since 4.7.0 `$post` can be a WP_Post object.
6321   *
6322   * @param int|WP_Post $post Post ID or object.
6323   * @return string[]|false Array of URLs already pinged for the given post, false if the post is not found.
6324   */
6325  function get_pung( $post ) {
6326      $post = get_post( $post );
6327  
6328      if ( ! $post ) {
6329          return false;
6330      }
6331  
6332      $pung = trim( $post->pinged );
6333      $pung = preg_split( '/\s/', $pung );
6334  
6335      /**
6336       * Filters the list of already-pinged URLs for the given post.
6337       *
6338       * @since 2.0.0
6339       *
6340       * @param string[] $pung Array of URLs already pinged for the given post.
6341       */
6342      return apply_filters( 'get_pung', $pung );
6343  }
6344  
6345  /**
6346   * Retrieves URLs that need to be pinged.
6347   *
6348   * @since 1.5.0
6349   * @since 4.7.0 `$post` can be a WP_Post object.
6350   *
6351   * @param int|WP_Post $post Post ID or post object.
6352   * @return string[]|false List of URLs yet to ping.
6353   */
6354  function get_to_ping( $post ) {
6355      $post = get_post( $post );
6356  
6357      if ( ! $post ) {
6358          return false;
6359      }
6360  
6361      $to_ping = sanitize_trackback_urls( $post->to_ping );
6362      $to_ping = preg_split( '/\s/', $to_ping, -1, PREG_SPLIT_NO_EMPTY );
6363  
6364      /**
6365       * Filters the list of URLs yet to ping for the given post.
6366       *
6367       * @since 2.0.0
6368       *
6369       * @param string[] $to_ping List of URLs yet to ping.
6370       */
6371      return apply_filters( 'get_to_ping', $to_ping );
6372  }
6373  
6374  /**
6375   * Does trackbacks for a list of URLs.
6376   *
6377   * @since 1.0.0
6378   *
6379   * @param string $tb_list Comma separated list of URLs.
6380   * @param int    $post_id Post ID.
6381   */
6382  function trackback_url_list( $tb_list, $post_id ) {
6383      if ( ! empty( $tb_list ) ) {
6384          // Get post data.
6385          $post = get_post( $post_id );
6386          if ( ! $post ) {
6387              return;
6388          }
6389          $postdata = $post->to_array();
6390  
6391          // Form an excerpt.
6392          $excerpt = strip_tags( $postdata['post_excerpt'] ? $postdata['post_excerpt'] : $postdata['post_content'] );
6393  
6394          if ( strlen( $excerpt ) > 255 ) {
6395              $excerpt = substr( $excerpt, 0, 252 ) . '&hellip;';
6396          }
6397  
6398          $trackback_urls = explode( ',', $tb_list );
6399          foreach ( (array) $trackback_urls as $tb_url ) {
6400              $tb_url = trim( $tb_url );
6401              trackback( $tb_url, wp_unslash( $postdata['post_title'] ), $excerpt, $post_id );
6402          }
6403      }
6404  }
6405  
6406  //
6407  // Page functions.
6408  //
6409  
6410  /**
6411   * Gets a list of page IDs.
6412   *
6413   * @since 2.0.0
6414   *
6415   * @global wpdb $wpdb WordPress database abstraction object.
6416   *
6417   * @return string[] List of page IDs as strings.
6418   */
6419  function get_all_page_ids() {
6420      global $wpdb;
6421  
6422      $page_ids = wp_cache_get( 'all_page_ids', 'posts' );
6423      if ( ! is_array( $page_ids ) ) {
6424          $page_ids = $wpdb->get_col( "SELECT ID FROM $wpdb->posts WHERE post_type = 'page'" );
6425          wp_cache_add( 'all_page_ids', $page_ids, 'posts' );
6426      }
6427  
6428      return $page_ids;
6429  }
6430  
6431  /**
6432   * Retrieves page data given a page ID or page object.
6433   *
6434   * Use get_post() instead of get_page().
6435   *
6436   * @since 1.5.1
6437   * @deprecated 3.5.0 Use get_post()
6438   *
6439   * @param int|WP_Post $page   Page object or page ID. Passed by reference.
6440   * @param string      $output Optional. The required return type. One of OBJECT, ARRAY_A, or ARRAY_N, which
6441   *                            correspond to a WP_Post object, an associative array, or a numeric array,
6442   *                            respectively. Default OBJECT.
6443   * @param string      $filter Optional. How the return value should be filtered. Accepts 'raw',
6444   *                            'edit', 'db', 'display'. Default 'raw'.
6445   * @return WP_Post|array|null WP_Post or array on success, null on failure.
6446   *
6447   * @phpstan-param int|numeric-string|WP_Post|null $page
6448   * @phpstan-param 'OBJECT'|'ARRAY_A'|'ARRAY_N' $output
6449   * @phpstan-param 'raw'|'edit'|'db'|'display' $filter
6450   * @phpstan-return (
6451   *     $output is 'ARRAY_A' ? non-empty-array<string, mixed>|null : (
6452   *         $output is 'ARRAY_N' ? non-empty-array<int, mixed>|null : (
6453   *             WP_Post|null
6454   *         )
6455   *     )
6456   * )
6457   */
6458  function get_page( $page, $output = OBJECT, $filter = 'raw' ) {
6459      return get_post( $page, $output, $filter );
6460  }
6461  
6462  /**
6463   * Retrieves a page given its path.
6464   *
6465   * @since 2.1.0
6466   *
6467   * @global wpdb $wpdb WordPress database abstraction object.
6468   *
6469   * @param string       $page_path Page path.
6470   * @param string       $output    Optional. The required return type. One of OBJECT, ARRAY_A, or ARRAY_N, which
6471   *                                correspond to a WP_Post object, an associative array, or a numeric array,
6472   *                                respectively. Default OBJECT.
6473   * @param string|array $post_type Optional. Post type or array of post types. Default 'page'.
6474   * @return WP_Post|array|null WP_Post (or array) on success, or null on failure.
6475   *
6476   * @phpstan-param 'OBJECT'|'ARRAY_A'|'ARRAY_N' $output
6477   * @phpstan-param string|string[]              $post_type
6478   * @phpstan-return (
6479   *     $output is 'ARRAY_A' ? non-empty-array<string, mixed>|null : (
6480   *         $output is 'ARRAY_N' ? non-empty-array<int, mixed>|null : (
6481   *             WP_Post|null
6482   *         )
6483   *     )
6484   * )
6485   */
6486  function get_page_by_path( $page_path, $output = OBJECT, $post_type = 'page' ) {
6487      global $wpdb;
6488  
6489      $last_changed = wp_cache_get_last_changed( 'posts' );
6490  
6491      $hash      = md5( $page_path . serialize( $post_type ) );
6492      $cache_key = "get_page_by_path:$hash";
6493      $cached    = wp_cache_get_salted( $cache_key, 'post-queries', $last_changed );
6494      if ( false !== $cached ) {
6495          // Special case: '0' is a bad `$page_path`.
6496          if ( '0' === $cached || 0 === $cached ) {
6497              return null;
6498          } else {
6499              return get_post( (int) $cached, $output );
6500          }
6501      }
6502  
6503      $page_path     = rawurlencode( urldecode( $page_path ) );
6504      $page_path     = str_replace( '%2F', '/', $page_path );
6505      $page_path     = str_replace( '%20', ' ', $page_path );
6506      $parts         = explode( '/', trim( $page_path, '/' ) );
6507      $parts         = array_map( 'sanitize_title_for_query', $parts );
6508      $escaped_parts = esc_sql( $parts );
6509  
6510      $in_string = "'" . implode( "','", $escaped_parts ) . "'";
6511  
6512      if ( is_array( $post_type ) ) {
6513          $post_types = $post_type;
6514      } else {
6515          $post_types = array( $post_type, 'attachment' );
6516      }
6517  
6518      $post_types          = esc_sql( $post_types );
6519      $post_type_in_string = "'" . implode( "','", $post_types ) . "'";
6520      $sql                 = "
6521          SELECT ID, post_name, post_parent, post_type
6522          FROM $wpdb->posts
6523          WHERE post_name IN ($in_string)
6524          AND post_type IN ($post_type_in_string)
6525          ORDER BY
6526              post_status = 'publish' DESC,
6527              post_status IN ('draft', 'pending', 'auto-draft') ASC, ID ASC
6528      ";
6529  
6530      /** @var array<object{ ID: string, post_name: string, post_parent: string, post_type: string }> $pages */
6531      $pages = $wpdb->get_results( $sql, OBJECT_K ); // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared -- The escaping has been applied above via esc_sql().
6532  
6533      $revparts = array_reverse( $parts );
6534  
6535      $found_id = 0;
6536      foreach ( (array) $pages as $page ) {
6537          if ( $page->post_name === $revparts[0] ) {
6538              $count = 0;
6539              $p     = $page;
6540  
6541              /*
6542               * Loop through the given path parts from right to left,
6543               * ensuring each matches the post ancestry.
6544               */
6545              while ( 0 !== (int) $p->post_parent && isset( $pages[ $p->post_parent ] ) ) {
6546                  ++$count;
6547                  $parent = $pages[ $p->post_parent ];
6548                  if ( ! isset( $revparts[ $count ] ) || $parent->post_name !== $revparts[ $count ] ) {
6549                      break;
6550                  }
6551                  $p = $parent;
6552              }
6553  
6554              if ( 0 === (int) $p->post_parent
6555                  && count( $revparts ) === $count + 1
6556                  && $p->post_name === $revparts[ $count ]
6557              ) {
6558                  $found_id = $page->ID;
6559  
6560                  /*
6561                   * A string like 'page' also searches attachments: /about/photo/ could be
6562                   * a child page or an attachment page, and this lookup handles both.
6563                   * Keep an attachment as a fallback, but keep looking for the requested
6564                   * type so an attachment cannot hide a page with the same path.
6565                   *
6566                   * An array is the exact list of types to search; no extra types are added.
6567                   * SQL already checks that list, so stop at the first full-path match.
6568                   */
6569                  if ( is_array( $post_type ) || $page->post_type === $post_type ) {
6570                      break;
6571                  }
6572              }
6573          }
6574      }
6575  
6576      // We cache misses as well as hits.
6577      wp_cache_set_salted( $cache_key, $found_id, 'post-queries', $last_changed );
6578  
6579      if ( $found_id ) {
6580          return get_post( (int) $found_id, $output );
6581      }
6582  
6583      return null;
6584  }
6585  
6586  /**
6587   * Identifies descendants of a given page ID in a list of page objects.
6588   *
6589   * Descendants are identified from the `$pages` array passed to the function. No database queries are performed.
6590   *
6591   * @since 1.5.1
6592   *
6593   * @param int       $page_id Page ID.
6594   * @param WP_Post[] $pages   List of page objects from which descendants should be identified.
6595   * @return WP_Post[] List of page children.
6596   */
6597  function get_page_children( $page_id, $pages ) {
6598      // Build a hash of ID -> children.
6599      $children = array();
6600      foreach ( (array) $pages as $page ) {
6601          $children[ (int) $page->post_parent ][] = $page;
6602      }
6603  
6604      $page_list = array();
6605  
6606      // Start the search by looking at immediate children.
6607      if ( isset( $children[ $page_id ] ) ) {
6608          // Always start at the end of the stack in order to preserve original `$pages` order.
6609          $to_look = array_reverse( $children[ $page_id ] );
6610  
6611          while ( $to_look ) {
6612              $p           = array_pop( $to_look );
6613              $page_list[] = $p;
6614              if ( isset( $children[ $p->ID ] ) ) {
6615                  foreach ( array_reverse( $children[ $p->ID ] ) as $child ) {
6616                      // Append to the `$to_look` stack to descend the tree.
6617                      $to_look[] = $child;
6618                  }
6619              }
6620          }
6621      }
6622  
6623      return $page_list;
6624  }
6625  
6626  /**
6627   * Orders the pages with children under parents in a flat list.
6628   *
6629   * It uses auxiliary structure to hold parent-children relationships and
6630   * runs in O(N) complexity
6631   *
6632   * @since 2.0.0
6633   *
6634   * @param WP_Post[] $pages   Posts array (passed by reference).
6635   * @param int       $page_id Optional. Parent page ID. Default 0.
6636   * @return string[] Array of post names keyed by ID and arranged by hierarchy. Children immediately follow their parents.
6637   */
6638  function get_page_hierarchy( &$pages, $page_id = 0 ) {
6639      if ( empty( $pages ) ) {
6640          return array();
6641      }
6642  
6643      $children = array();
6644      foreach ( (array) $pages as $p ) {
6645          $parent_id                = (int) $p->post_parent;
6646          $children[ $parent_id ][] = $p;
6647      }
6648  
6649      $result = array();
6650      _page_traverse_name( $page_id, $children, $result );
6651  
6652      return $result;
6653  }
6654  
6655  /**
6656   * Traverses and return all the nested children post names of a root page.
6657   *
6658   * $children contains parent-children relations
6659   *
6660   * @since 2.9.0
6661   * @access private
6662   *
6663   * @see _page_traverse_name()
6664   *
6665   * @param int      $page_id  Page ID.
6666   * @param array    $children Parent-children relations (passed by reference).
6667   * @param string[] $result   Array of page names keyed by ID (passed by reference).
6668   */
6669  function _page_traverse_name( $page_id, &$children, &$result ) {
6670      if ( isset( $children[ $page_id ] ) ) {
6671          foreach ( (array) $children[ $page_id ] as $child ) {
6672              $result[ $child->ID ] = $child->post_name;
6673              _page_traverse_name( $child->ID, $children, $result );
6674          }
6675      }
6676  }
6677  
6678  /**
6679   * Builds the URI path for a page.
6680   *
6681   * Sub pages will be in the "directory" under the parent page post name.
6682   *
6683   * @since 1.5.0
6684   * @since 4.6.0 The `$page` parameter was made optional.
6685   *
6686   * @param WP_Post|object|int $page Optional. Page ID or WP_Post object. Default is global $post.
6687   * @return string|false Page URI, false on error.
6688   */
6689  function get_page_uri( $page = 0 ) {
6690      if ( ! $page instanceof WP_Post ) {
6691          $page = get_post( $page );
6692      }
6693  
6694      if ( ! $page ) {
6695          return false;
6696      }
6697  
6698      $uri = $page->post_name;
6699  
6700      foreach ( $page->ancestors as $parent ) {
6701          $parent = get_post( $parent );
6702          if ( $parent && $parent->post_name ) {
6703              $uri = $parent->post_name . '/' . $uri;
6704          }
6705      }
6706  
6707      /**
6708       * Filters the URI for a page.
6709       *
6710       * @since 4.4.0
6711       *
6712       * @param string  $uri  Page URI.
6713       * @param WP_Post $page Page object.
6714       */
6715      return apply_filters( 'get_page_uri', $uri, $page );
6716  }
6717  
6718  /**
6719   * Retrieves an array of pages (or hierarchical post type items).
6720   *
6721   * @since 1.5.0
6722   * @since 6.3.0 Use WP_Query internally.
6723   *
6724   * @param array|string $args {
6725   *     Optional. Array or string of arguments to retrieve pages.
6726   *
6727   *     @type int          $child_of     Page ID to return child and grandchild pages of. Note: The value
6728   *                                      of `$hierarchical` has no bearing on whether `$child_of` returns
6729   *                                      hierarchical results. Default 0, or no restriction.
6730   *     @type string       $sort_order   How to sort retrieved pages. Accepts 'ASC', 'DESC'. Default 'ASC'.
6731   *     @type string       $sort_column  What columns to sort pages by, comma-separated. Accepts 'post_author',
6732   *                                      'post_date', 'post_title', 'post_name', 'post_modified', 'menu_order',
6733   *                                      'post_modified_gmt', 'post_parent', 'ID', 'rand', 'comment_count'.
6734   *                                      'post_' can be omitted for any values that start with it.
6735   *                                      Default 'post_title'.
6736   *     @type bool         $hierarchical Whether to return pages hierarchically. If false in conjunction with
6737   *                                      `$child_of` also being false, both arguments will be disregarded.
6738   *                                      Default true.
6739   *     @type int[]        $exclude      Array of page IDs to exclude. Default empty array.
6740   *     @type int[]        $include      Array of page IDs to include. Cannot be used with `$child_of`,
6741   *                                      `$parent`, `$exclude`, `$meta_key`, `$meta_value`, or `$hierarchical`.
6742   *                                      Default empty array.
6743   *     @type string       $meta_key     Only include pages with this meta key. Default empty.
6744   *     @type string       $meta_value   Only include pages with this meta value. Requires `$meta_key`.
6745   *                                      Default empty.
6746   *     @type string       $authors      A comma-separated list of author IDs. Default empty.
6747   *     @type int          $parent       Page ID to return direct children of. Default -1, or no restriction.
6748   *     @type string|int[] $exclude_tree Comma-separated string or array of page IDs to exclude.
6749   *                                      Default empty array.
6750   *     @type int          $number       The number of pages to return. Default 0, or all pages.
6751   *     @type int          $offset       The number of pages to skip before returning. Requires `$number`.
6752   *                                      Default 0.
6753   *     @type string       $post_type    The post type to query. Default 'page'.
6754   *     @type string|array $post_status  A comma-separated list or array of post statuses to include.
6755   *                                      Default 'publish'.
6756   * }
6757   * @return WP_Post[]|false Array of pages (or hierarchical post type items). Boolean false if the
6758   *                         specified post type is not hierarchical or the specified status is not
6759   *                         supported by the post type.
6760   */
6761  function get_pages( $args = array() ) {
6762      $defaults = array(
6763          'child_of'     => 0,
6764          'sort_order'   => 'ASC',
6765          'sort_column'  => 'post_title',
6766          'hierarchical' => 1,
6767          'exclude'      => array(),
6768          'include'      => array(),
6769          'meta_key'     => '',
6770          'meta_value'   => '',
6771          'authors'      => '',
6772          'parent'       => -1,
6773          'exclude_tree' => array(),
6774          'number'       => '',
6775          'offset'       => 0,
6776          'post_type'    => 'page',
6777          'post_status'  => 'publish',
6778      );
6779  
6780      $parsed_args = wp_parse_args( $args, $defaults );
6781  
6782      $number       = (int) $parsed_args['number'];
6783      $offset       = (int) $parsed_args['offset'];
6784      $child_of     = (int) $parsed_args['child_of'];
6785      $hierarchical = $parsed_args['hierarchical'];
6786      $exclude      = $parsed_args['exclude'];
6787      $meta_key     = $parsed_args['meta_key'];
6788      $meta_value   = $parsed_args['meta_value'];
6789      $parent       = $parsed_args['parent'];
6790      $post_status  = $parsed_args['post_status'];
6791  
6792      // Make sure the post type is hierarchical.
6793      $hierarchical_post_types = get_post_types( array( 'hierarchical' => true ) );
6794      if ( ! in_array( $parsed_args['post_type'], $hierarchical_post_types, true ) ) {
6795          return false;
6796      }
6797  
6798      if ( $parent > 0 && ! $child_of ) {
6799          $hierarchical = false;
6800      }
6801  
6802      // Make sure we have a valid post status.
6803      if ( ! is_array( $post_status ) ) {
6804          $post_status = explode( ',', $post_status );
6805      }
6806      if ( array_diff( $post_status, get_post_stati() ) ) {
6807          return false;
6808      }
6809  
6810      $query_args = array(
6811          'orderby'                => 'post_title',
6812          'order'                  => 'ASC',
6813          'post__not_in'           => wp_parse_id_list( $exclude ),
6814          'meta_key'               => $meta_key,
6815          'meta_value'             => $meta_value,
6816          'posts_per_page'         => -1,
6817          'offset'                 => $offset,
6818          'post_type'              => $parsed_args['post_type'],
6819          'post_status'            => $post_status,
6820          'update_post_term_cache' => false,
6821          'update_post_meta_cache' => false,
6822          'ignore_sticky_posts'    => true,
6823          'no_found_rows'          => true,
6824      );
6825  
6826      if ( ! empty( $parsed_args['include'] ) ) {
6827          $child_of = 0; // Ignore child_of, parent, exclude, meta_key, and meta_value params if using include.
6828          $parent   = -1;
6829          unset( $query_args['post__not_in'], $query_args['meta_key'], $query_args['meta_value'] );
6830          $hierarchical           = false;
6831          $query_args['post__in'] = wp_parse_id_list( $parsed_args['include'] );
6832      }
6833  
6834      if ( ! empty( $parsed_args['authors'] ) ) {
6835          $post_authors = wp_parse_list( $parsed_args['authors'] );
6836  
6837          if ( ! empty( $post_authors ) ) {
6838              $query_args['author__in'] = array();
6839              foreach ( $post_authors as $post_author ) {
6840                  // Do we have an author id or an author login?
6841                  if ( 0 === (int) $post_author ) {
6842                      $post_author = get_user_by( 'login', $post_author );
6843                      if ( empty( $post_author ) ) {
6844                          continue;
6845                      }
6846                      if ( empty( $post_author->ID ) ) {
6847                          continue;
6848                      }
6849                      $post_author = $post_author->ID;
6850                  }
6851                  $query_args['author__in'][] = (int) $post_author;
6852              }
6853          }
6854      }
6855  
6856      if ( is_array( $parent ) ) {
6857          $post_parent__in = array_map( 'absint', (array) $parent );
6858          if ( ! empty( $post_parent__in ) ) {
6859              $query_args['post_parent__in'] = $post_parent__in;
6860          }
6861      } elseif ( $parent >= 0 ) {
6862          $query_args['post_parent'] = $parent;
6863      }
6864  
6865      /*
6866       * Maintain backward compatibility for `sort_column` key.
6867       * Additionally to `WP_Query`, it has been supporting the `post_modified_gmt` field, so this logic will translate
6868       * it to `post_modified` which should result in the same order given the two dates in the fields match.
6869       */
6870      $orderby = wp_parse_list( $parsed_args['sort_column'] );
6871      $orderby = array_map(
6872          static function ( $orderby_field ) {
6873              $orderby_field = trim( $orderby_field );
6874              if ( 'post_modified_gmt' === $orderby_field || 'modified_gmt' === $orderby_field ) {
6875                  $orderby_field = str_replace( '_gmt', '', $orderby_field );
6876              }
6877              return $orderby_field;
6878          },
6879          $orderby
6880      );
6881      if ( $orderby ) {
6882          $query_args['orderby'] = array_fill_keys( $orderby, $parsed_args['sort_order'] );
6883      }
6884  
6885      $order = $parsed_args['sort_order'];
6886      if ( $order ) {
6887          $query_args['order'] = $order;
6888      }
6889  
6890      if ( ! empty( $number ) ) {
6891          $query_args['posts_per_page'] = $number;
6892      }
6893  
6894      /**
6895       * Filters query arguments passed to WP_Query in get_pages().
6896       *
6897       * @since 6.3.0
6898       *
6899       * @param array $query_args  Array of arguments passed to WP_Query.
6900       * @param array $parsed_args Array of get_pages() arguments.
6901       */
6902      $query_args = apply_filters( 'get_pages_query_args', $query_args, $parsed_args );
6903  
6904      $pages = new WP_Query();
6905      $pages = $pages->query( $query_args );
6906  
6907      if ( $child_of || $hierarchical ) {
6908          $pages = get_page_children( $child_of, $pages );
6909      }
6910  
6911      if ( ! empty( $parsed_args['exclude_tree'] ) ) {
6912          $exclude = wp_parse_id_list( $parsed_args['exclude_tree'] );
6913          foreach ( $exclude as $id ) {
6914              $children = get_page_children( $id, $pages );
6915              foreach ( $children as $child ) {
6916                  $exclude[] = $child->ID;
6917              }
6918          }
6919  
6920          $num_pages = count( $pages );
6921          for ( $i = 0; $i < $num_pages; $i++ ) {
6922              if ( in_array( $pages[ $i ]->ID, $exclude, true ) ) {
6923                  unset( $pages[ $i ] );
6924              }
6925          }
6926      }
6927  
6928      /**
6929       * Filters the retrieved list of pages.
6930       *
6931       * @since 2.1.0
6932       *
6933       * @param WP_Post[] $pages       Array of page objects.
6934       * @param array     $parsed_args Array of get_pages() arguments.
6935       */
6936      return apply_filters( 'get_pages', $pages, $parsed_args );
6937  }
6938  
6939  //
6940  // Attachment functions.
6941  //
6942  
6943  /**
6944   * Determines whether an attachment URI is local and really an attachment.
6945   *
6946   * For more information on this and similar theme functions, check out
6947   * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
6948   * Conditional Tags} article in the Theme Developer Handbook.
6949   *
6950   * @since 2.0.0
6951   *
6952   * @param string $url URL to check
6953   * @return bool True on success, false on failure.
6954   */
6955  function is_local_attachment( $url ) {
6956      if ( ! str_contains( $url, home_url() ) ) {
6957          return false;
6958      }
6959      if ( str_contains( $url, home_url( '/?attachment_id=' ) ) ) {
6960          return true;
6961      }
6962  
6963      $id = url_to_postid( $url );
6964      if ( $id ) {
6965          $post = get_post( $id );
6966          if ( 'attachment' === $post->post_type ) {
6967              return true;
6968          }
6969      }
6970      return false;
6971  }
6972  
6973  /**
6974   * Inserts an attachment.
6975   *
6976   * If you set the 'ID' in the $args parameter, it will mean that you are
6977   * updating and attempt to update the attachment. You can also set the
6978   * attachment name or title by setting the key 'post_name' or 'post_title'.
6979   *
6980   * You can set the dates for the attachment manually by setting the 'post_date'
6981   * and 'post_date_gmt' keys' values.
6982   *
6983   * By default, the comments will use the default settings for whether the
6984   * comments are allowed. You can close them manually or keep them open by
6985   * setting the value for the 'comment_status' key.
6986   *
6987   * @since 2.0.0
6988   * @since 4.7.0 Added the `$wp_error` parameter to allow a WP_Error to be returned on failure.
6989   * @since 5.6.0 Added the `$fire_after_hooks` parameter.
6990   *
6991   * @see wp_insert_post()
6992   *
6993   * @param string|array $args             Arguments for inserting an attachment.
6994   * @param string|false $file             Optional. Filename. Default false.
6995   * @param int          $parent_post_id   Optional. Parent post ID or 0 for no parent. Default 0.
6996   * @param bool         $wp_error         Optional. Whether to return a WP_Error on failure. Default false.
6997   * @param bool         $fire_after_hooks Optional. Whether to fire the after insert hooks. Default true.
6998   * @return int|WP_Error The attachment ID on success. The value 0 or WP_Error on failure.
6999   *
7000   * @phpstan-return (
7001   *     $wp_error is false ? int : int|WP_Error
7002   * )
7003   */
7004  function wp_insert_attachment( $args, $file = false, $parent_post_id = 0, $wp_error = false, $fire_after_hooks = true ) {
7005      $defaults = array(
7006          'file'        => $file,
7007          'post_parent' => 0,
7008      );
7009  
7010      $data = wp_parse_args( $args, $defaults );
7011  
7012      if ( ! empty( $parent_post_id ) ) {
7013          $data['post_parent'] = $parent_post_id;
7014      }
7015  
7016      $data['post_type'] = 'attachment';
7017  
7018      return wp_insert_post( $data, $wp_error, $fire_after_hooks );
7019  }
7020  
7021  /**
7022   * Trashes or deletes an attachment.
7023   *
7024   * When an attachment is permanently deleted, the file will also be removed.
7025   * Deletion removes all post meta fields, taxonomy, comments, etc. associated
7026   * with the attachment (except the main post).
7027   *
7028   * The attachment is moved to the Trash instead of permanently deleted unless Trash
7029   * for media is disabled, item is already in the Trash, or $force_delete is true.
7030   *
7031   * @since 2.0.0
7032   *
7033   * @global wpdb $wpdb WordPress database abstraction object.
7034   *
7035   * @param int  $post_id      Attachment ID.
7036   * @param bool $force_delete Optional. Whether to bypass Trash and force deletion.
7037   *                           Default false.
7038   * @return WP_Post|false|null Post data on success, false or null on failure.
7039   */
7040  function wp_delete_attachment( $post_id, $force_delete = false ) {
7041      global $wpdb;
7042  
7043      $post = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->posts WHERE ID = %d", $post_id ) );
7044  
7045      if ( ! $post ) {
7046          return $post;
7047      }
7048  
7049      $post = get_post( $post );
7050  
7051      if ( 'attachment' !== $post->post_type ) {
7052          return false;
7053      }
7054  
7055      if ( ! $force_delete && EMPTY_TRASH_DAYS && MEDIA_TRASH && 'trash' !== $post->post_status ) {
7056          return wp_trash_post( $post_id );
7057      }
7058  
7059      /**
7060       * Filters whether an attachment deletion should take place.
7061       *
7062       * @since 5.5.0
7063       *
7064       * @param WP_Post|false|null $delete       Whether to go forward with deletion.
7065       * @param WP_Post            $post         Post object.
7066       * @param bool               $force_delete Whether to bypass the Trash.
7067       */
7068      $check = apply_filters( 'pre_delete_attachment', null, $post, $force_delete );
7069      if ( null !== $check ) {
7070          return $check;
7071      }
7072  
7073      delete_post_meta( $post_id, '_wp_trash_meta_status' );
7074      delete_post_meta( $post_id, '_wp_trash_meta_time' );
7075  
7076      $meta         = wp_get_attachment_metadata( $post_id );
7077      $backup_sizes = get_post_meta( $post->ID, '_wp_attachment_backup_sizes', true );
7078      $file         = get_attached_file( $post_id );
7079  
7080      if ( is_multisite() && is_string( $file ) && ! empty( $file ) ) {
7081          clean_dirsize_cache( $file );
7082      }
7083  
7084      /**
7085       * Fires before an attachment is deleted, at the start of wp_delete_attachment().
7086       *
7087       * @since 2.0.0
7088       * @since 5.5.0 Added the `$post` parameter.
7089       *
7090       * @param int     $post_id Attachment ID.
7091       * @param WP_Post $post    Post object.
7092       */
7093      do_action( 'delete_attachment', $post_id, $post );
7094  
7095      wp_delete_object_term_relationships( $post_id, array( 'category', 'post_tag' ) );
7096      wp_delete_object_term_relationships( $post_id, get_object_taxonomies( $post->post_type ) );
7097  
7098      // Delete all for any posts.
7099      delete_metadata( 'post', 0, '_thumbnail_id', $post_id, true );
7100  
7101      wp_defer_comment_counting( true );
7102  
7103      $comment_ids = $wpdb->get_col( $wpdb->prepare( "SELECT comment_ID FROM $wpdb->comments WHERE comment_post_ID = %d ORDER BY comment_ID DESC", $post_id ) );
7104      foreach ( $comment_ids as $comment_id ) {
7105          wp_delete_comment( $comment_id, true );
7106      }
7107  
7108      wp_defer_comment_counting( false );
7109  
7110      $post_meta_ids = $wpdb->get_col( $wpdb->prepare( "SELECT meta_id FROM $wpdb->postmeta WHERE post_id = %d ", $post_id ) );
7111      foreach ( $post_meta_ids as $mid ) {
7112          delete_metadata_by_mid( 'post', $mid );
7113      }
7114  
7115      /** This action is documented in wp-includes/post.php */
7116      do_action( 'delete_post', $post_id, $post );
7117      $result = $wpdb->delete( $wpdb->posts, array( 'ID' => $post_id ) );
7118      if ( ! $result ) {
7119          return false;
7120      }
7121      /** This action is documented in wp-includes/post.php */
7122      do_action( 'deleted_post', $post_id, $post );
7123  
7124      wp_delete_attachment_files( $post_id, $meta, $backup_sizes, $file );
7125  
7126      clean_post_cache( $post );
7127  
7128      return $post;
7129  }
7130  
7131  /**
7132   * Deletes all files that belong to the given attachment.
7133   *
7134   * @since 4.9.7
7135   *
7136   * @global wpdb $wpdb WordPress database abstraction object.
7137   *
7138   * @param int    $post_id      Attachment ID.
7139   * @param array  $meta         The attachment's meta data.
7140   * @param array  $backup_sizes The meta data for the attachment's backup images.
7141   * @param string $file         Absolute path to the attachment's file.
7142   * @return bool True on success, false on failure.
7143   */
7144  function wp_delete_attachment_files( $post_id, $meta, $backup_sizes, $file ) {
7145      global $wpdb;
7146  
7147      $uploadpath = wp_get_upload_dir();
7148      $deleted    = true;
7149  
7150      if ( ! empty( $meta['thumb'] ) ) {
7151          // Don't delete the thumb if another attachment uses it.
7152          if ( ! $wpdb->get_row( $wpdb->prepare( "SELECT meta_id FROM $wpdb->postmeta WHERE meta_key = '_wp_attachment_metadata' AND meta_value LIKE %s AND post_id <> %d", '%' . $wpdb->esc_like( $meta['thumb'] ) . '%', $post_id ) ) ) {
7153              $thumbfile = str_replace( wp_basename( $file ), $meta['thumb'], $file );
7154  
7155              if ( ! empty( $thumbfile ) ) {
7156                  $thumbfile = path_join( $uploadpath['basedir'], $thumbfile );
7157                  $thumbdir  = path_join( $uploadpath['basedir'], dirname( $file ) );
7158  
7159                  if ( ! wp_delete_file_from_directory( $thumbfile, $thumbdir ) ) {
7160                      $deleted = false;
7161                  }
7162              }
7163          }
7164      }
7165  
7166      // Remove intermediate and backup images if there are any.
7167      if ( isset( $meta['sizes'] ) && is_array( $meta['sizes'] ) ) {
7168          $intermediate_dir = path_join( $uploadpath['basedir'], dirname( $file ) );
7169  
7170          foreach ( $meta['sizes'] as $size => $sizeinfo ) {
7171              $intermediate_file = str_replace( wp_basename( $file ), $sizeinfo['file'], $file );
7172  
7173              if ( ! empty( $intermediate_file ) ) {
7174                  $intermediate_file = path_join( $uploadpath['basedir'], $intermediate_file );
7175  
7176                  if ( ! wp_delete_file_from_directory( $intermediate_file, $intermediate_dir ) ) {
7177                      $deleted = false;
7178                  }
7179              }
7180          }
7181      }
7182  
7183      if ( ! empty( $meta['original_image'] ) ) {
7184          if ( empty( $intermediate_dir ) ) {
7185              $intermediate_dir = path_join( $uploadpath['basedir'], dirname( $file ) );
7186          }
7187  
7188          $original_image = str_replace( wp_basename( $file ), $meta['original_image'], $file );
7189  
7190          if ( ! empty( $original_image ) ) {
7191              $original_image = path_join( $uploadpath['basedir'], $original_image );
7192  
7193              if ( ! wp_delete_file_from_directory( $original_image, $intermediate_dir ) ) {
7194                  $deleted = false;
7195              }
7196          }
7197      }
7198  
7199      /*
7200       * Delete the source-format companion file. The client-side media flow can
7201       * sideload a source-format original (such as a HEIC file) alongside a
7202       * web-viewable derivative, recording its filename under the 'source_image'
7203       * key. This is kept separate from 'original_image', which continues to
7204       * point at the derivative.
7205       */
7206      if ( ! empty( $meta['source_image'] ) && is_string( $meta['source_image'] ) ) {
7207          if ( empty( $intermediate_dir ) ) {
7208              $intermediate_dir = path_join( $uploadpath['basedir'], dirname( $file ) );
7209          }
7210  
7211          $source_image = str_replace( wp_basename( $file ), $meta['source_image'], $file );
7212  
7213          if ( ! empty( $source_image ) ) {
7214              $source_image = path_join( $uploadpath['basedir'], $source_image );
7215  
7216              if ( ! wp_delete_file_from_directory( $source_image, $intermediate_dir ) ) {
7217                  $deleted = false;
7218              }
7219          }
7220      }
7221  
7222      /*
7223       * Delete the animated-GIF video companions. When the client-side media flow
7224       * converts an opaque animated GIF to a web-safe video, the converted MP4/WebM
7225       * and a static first-frame JPEG poster are sideloaded alongside the GIF and
7226       * recorded under the 'animated_video' and 'animated_video_poster' keys. These
7227       * are kept separate from 'original_image', which continues to point at the GIF.
7228       */
7229      foreach ( array( 'animated_video', 'animated_video_poster' ) as $companion_key ) {
7230          if ( empty( $meta[ $companion_key ] ) || ! is_string( $meta[ $companion_key ] ) ) {
7231              continue;
7232          }
7233  
7234          if ( empty( $intermediate_dir ) ) {
7235              $intermediate_dir = path_join( $uploadpath['basedir'], dirname( $file ) );
7236          }
7237  
7238          $companion_file = str_replace( wp_basename( $file ), $meta[ $companion_key ], $file );
7239  
7240          if ( ! empty( $companion_file ) ) {
7241              $companion_file = path_join( $uploadpath['basedir'], $companion_file );
7242  
7243              if ( ! wp_delete_file_from_directory( $companion_file, $intermediate_dir ) ) {
7244                  $deleted = false;
7245              }
7246          }
7247      }
7248  
7249      if ( is_array( $backup_sizes ) ) {
7250          $del_dir = path_join( $uploadpath['basedir'], dirname( $meta['file'] ) );
7251  
7252          foreach ( $backup_sizes as $size ) {
7253              $del_file = path_join( dirname( $meta['file'] ), $size['file'] );
7254  
7255              if ( ! empty( $del_file ) ) {
7256                  $del_file = path_join( $uploadpath['basedir'], $del_file );
7257  
7258                  if ( ! wp_delete_file_from_directory( $del_file, $del_dir ) ) {
7259                      $deleted = false;
7260                  }
7261              }
7262          }
7263      }
7264  
7265      if ( ! wp_delete_file_from_directory( $file, $uploadpath['basedir'] ) ) {
7266          $deleted = false;
7267      }
7268  
7269      return $deleted;
7270  }
7271  
7272  /**
7273   * Retrieves attachment metadata for attachment ID.
7274   *
7275   * @since 2.1.0
7276   * @since 6.0.0 The `$filesize` value was added to the returned array.
7277   * @since 7.1.0 `false` is now returned if the metadata is not an array, and when the result is
7278   *              filtered the `sizes` key is always an array when present.
7279   *
7280   * @param int  $attachment_id Attachment post ID. Defaults to global $post.
7281   * @param bool $unfiltered    Optional. If true, filters are not run. Default false.
7282   * @return array|false {
7283   *     Attachment metadata. False on failure.
7284   *
7285   *     @type int    $width      The width of the attachment.
7286   *     @type int    $height     The height of the attachment.
7287   *     @type string $file       The file path relative to `wp-content/uploads`.
7288   *     @type array  $sizes      Keys are size slugs, each value is an array containing
7289   *                              'file', 'width', 'height', and 'mime-type'.
7290   *     @type array  $image_meta Image metadata.
7291   *     @type int    $filesize   File size of the attachment.
7292   * }
7293   *
7294   * @phpstan-return array{
7295   *                     width?: int<1, max>,
7296   *                     height?: int<1, max>,
7297   *                     file?: non-empty-string,
7298   *                     filesize?: int<0, max>,
7299   *                     original_image?: non-empty-string,
7300   *                     source_image?: non-empty-string,
7301   *                     sizes?: array<non-empty-string, array{
7302   *                                                         file: non-empty-string,
7303   *                                                         width: int<1, max>,
7304   *                                                         height: int<1, max>,
7305   *                                                         'mime-type': non-empty-string,
7306   *                                                         filesize?: int<0, max>,
7307   *                                                         ...
7308   *                                                     }>,
7309   *                     image_meta?: array{
7310   *                                      aperture: numeric-string|int,
7311   *                                      credit: string,
7312   *                                      camera: string,
7313   *                                      caption: string,
7314   *                                      created_timestamp: numeric-string|int,
7315   *                                      copyright: string,
7316   *                                      focal_length: numeric-string|int,
7317   *                                      iso: numeric-string|int,
7318   *                                      shutter_speed: numeric-string|int,
7319   *                                      title: string,
7320   *                                      orientation: numeric-string|int,
7321   *                                      keywords: list<string>,
7322   *                                      alt: string,
7323   *                                  },
7324   *                     ...
7325   *                 }|false
7326   */
7327  function wp_get_attachment_metadata( $attachment_id = 0, $unfiltered = false ) {
7328      $attachment_id = (int) $attachment_id;
7329  
7330      if ( ! $attachment_id ) {
7331          $post = get_post();
7332  
7333          if ( ! $post ) {
7334              return false;
7335          }
7336  
7337          $attachment_id = $post->ID;
7338      }
7339  
7340      $data = get_post_meta( $attachment_id, '_wp_attachment_metadata', true );
7341  
7342      if ( ! is_array( $data ) || ! $data ) {
7343          return false;
7344      }
7345  
7346      if ( $unfiltered ) {
7347          return $data;
7348      }
7349  
7350      /**
7351       * Filters the attachment meta data.
7352       *
7353       * @since 2.1.0
7354       *
7355       * @param array $data          Array of meta data for the given attachment.
7356       * @param int   $attachment_id Attachment post ID.
7357       */
7358      $data = apply_filters( 'wp_get_attachment_metadata', $data, $attachment_id );
7359  
7360      if ( ! is_array( $data ) ) {
7361          return false;
7362      }
7363  
7364      if ( array_key_exists( 'sizes', $data ) && ! is_array( $data['sizes'] ) ) {
7365          $data['sizes'] = array();
7366      }
7367  
7368      return $data;
7369  }
7370  
7371  /**
7372   * Updates metadata for an attachment.
7373   *
7374   * @since 2.1.0
7375   *
7376   * @param int   $attachment_id Attachment post ID.
7377   * @param array $data          Attachment meta data.
7378   * @return int|bool Whether the metadata was successfully updated.
7379   *                  True on success, the Meta ID if the key didn't exist.
7380   *                  False if $post is invalid, on failure, or if $data is the same as the existing metadata.
7381   */
7382  function wp_update_attachment_metadata( $attachment_id, $data ) {
7383      $attachment_id = (int) $attachment_id;
7384  
7385      $post = get_post( $attachment_id );
7386  
7387      if ( ! $post ) {
7388          return false;
7389      }
7390  
7391      /**
7392       * Filters the updated attachment meta data.
7393       *
7394       * @since 2.1.0
7395       *
7396       * @param array $data          Array of updated attachment meta data.
7397       * @param int   $attachment_id Attachment post ID.
7398       */
7399      $data = apply_filters( 'wp_update_attachment_metadata', $data, $post->ID );
7400      if ( $data ) {
7401          return update_post_meta( $post->ID, '_wp_attachment_metadata', $data );
7402      } else {
7403          return delete_post_meta( $post->ID, '_wp_attachment_metadata' );
7404      }
7405  }
7406  
7407  /**
7408   * Retrieves the URL for an attachment.
7409   *
7410   * @since 2.1.0
7411   *
7412   * @global string $pagenow The filename of the current screen.
7413   *
7414   * @param int $attachment_id Optional. Attachment post ID. Defaults to global $post.
7415   * @return string|false Attachment URL, otherwise false.
7416   */
7417  function wp_get_attachment_url( $attachment_id = 0 ) {
7418      global $pagenow;
7419  
7420      $attachment_id = (int) $attachment_id;
7421  
7422      $post = get_post( $attachment_id );
7423  
7424      if ( ! $post ) {
7425          return false;
7426      }
7427  
7428      if ( 'attachment' !== $post->post_type ) {
7429          return false;
7430      }
7431  
7432      $url = '';
7433      // Get attached file.
7434      $file = get_post_meta( $post->ID, '_wp_attached_file', true );
7435      if ( $file ) {
7436          // Get upload directory.
7437          $uploads = wp_get_upload_dir();
7438          if ( $uploads && false === $uploads['error'] ) {
7439              // Check that the upload base exists in the file location.
7440              if ( str_starts_with( $file, $uploads['basedir'] ) ) {
7441                  // Replace file location with url location.
7442                  $url = str_replace( $uploads['basedir'], $uploads['baseurl'], $file );
7443              } elseif ( str_contains( $file, 'wp-content/uploads' ) ) {
7444                  // Get the directory name relative to the basedir (back compat for pre-2.7 uploads).
7445                  $url = trailingslashit( $uploads['baseurl'] . '/' . _wp_get_attachment_relative_path( $file ) ) . wp_basename( $file );
7446              } else {
7447                  // It's a newly-uploaded file, therefore $file is relative to the basedir.
7448                  $url = $uploads['baseurl'] . "/$file";
7449              }
7450          }
7451      }
7452  
7453      /*
7454       * If any of the above options failed, Fallback on the GUID as used pre-2.7,
7455       * not recommended to rely upon this.
7456       */
7457      if ( ! $url ) {
7458          $url = get_the_guid( $post->ID );
7459      }
7460  
7461      // On SSL front end, URLs should be HTTPS.
7462      if ( is_ssl() && ! is_admin() && 'wp-login.php' !== $pagenow ) {
7463          $url = set_url_scheme( $url );
7464      }
7465  
7466      /**
7467       * Filters the attachment URL.
7468       *
7469       * @since 2.1.0
7470       *
7471       * @param string $url           URL for the given attachment.
7472       * @param int    $attachment_id Attachment post ID.
7473       */
7474      $url = apply_filters( 'wp_get_attachment_url', $url, $post->ID );
7475  
7476      if ( ! $url ) {
7477          return false;
7478      }
7479  
7480      return $url;
7481  }
7482  
7483  /**
7484   * Retrieves the caption for an attachment.
7485   *
7486   * @since 4.6.0
7487   *
7488   * @param int $post_id Optional. Attachment ID. Default is the ID of the global `$post`.
7489   * @return string|false Attachment caption on success, false on failure.
7490   */
7491  function wp_get_attachment_caption( $post_id = 0 ) {
7492      $post_id = (int) $post_id;
7493      $post    = get_post( $post_id );
7494  
7495      if ( ! $post ) {
7496          return false;
7497      }
7498  
7499      if ( 'attachment' !== $post->post_type ) {
7500          return false;
7501      }
7502  
7503      $caption = $post->post_excerpt;
7504  
7505      /**
7506       * Filters the attachment caption.
7507       *
7508       * @since 4.6.0
7509       *
7510       * @param string $caption Caption for the given attachment.
7511       * @param int    $post_id Attachment ID.
7512       */
7513      return apply_filters( 'wp_get_attachment_caption', $caption, $post->ID );
7514  }
7515  
7516  /**
7517   * Retrieves URL for an attachment thumbnail.
7518   *
7519   * @since 2.1.0
7520   * @since 6.1.0 Changed to use wp_get_attachment_image_url().
7521   *
7522   * @param int $post_id Optional. Attachment ID. Default is the ID of the global `$post`.
7523   * @return string|false Thumbnail URL on success, false on failure.
7524   */
7525  function wp_get_attachment_thumb_url( $post_id = 0 ) {
7526      $post_id = (int) $post_id;
7527  
7528      /*
7529       * This uses image_downsize() which also looks for the (very) old format $image_meta['thumb']
7530       * when the newer format $image_meta['sizes']['thumbnail'] doesn't exist.
7531       */
7532      $thumbnail_url = wp_get_attachment_image_url( $post_id, 'thumbnail' );
7533  
7534      if ( empty( $thumbnail_url ) ) {
7535          return false;
7536      }
7537  
7538      /**
7539       * Filters the attachment thumbnail URL.
7540       *
7541       * @since 2.1.0
7542       *
7543       * @param string $thumbnail_url URL for the attachment thumbnail.
7544       * @param int    $post_id       Attachment ID.
7545       */
7546      return apply_filters( 'wp_get_attachment_thumb_url', $thumbnail_url, $post_id );
7547  }
7548  
7549  /**
7550   * Verifies an attachment is of a given type.
7551   *
7552   * @since 4.2.0
7553   *
7554   * @param string      $type Attachment type. Accepts `image`, `audio`, `video`, or a file extension.
7555   * @param int|WP_Post $post Optional. Attachment ID or object. Default is global $post.
7556   * @return bool True if an accepted type or a matching file extension, false otherwise.
7557   */
7558  function wp_attachment_is( $type, $post = null ) {
7559      $post = get_post( $post );
7560  
7561      if ( ! $post ) {
7562          return false;
7563      }
7564  
7565      $file = get_attached_file( $post->ID );
7566  
7567      if ( ! $file ) {
7568          return false;
7569      }
7570  
7571      if ( str_starts_with( $post->post_mime_type, $type . '/' ) ) {
7572          return true;
7573      }
7574  
7575      $check = wp_check_filetype( $file );
7576  
7577      if ( empty( $check['ext'] ) ) {
7578          return false;
7579      }
7580  
7581      $ext = $check['ext'];
7582  
7583      if ( 'import' !== $post->post_mime_type ) {
7584          return $type === $ext;
7585      }
7586  
7587      switch ( $type ) {
7588          case 'image':
7589              $image_exts = array( 'jpg', 'jpeg', 'jpe', 'gif', 'png', 'webp', 'avif', 'heic' );
7590              return in_array( $ext, $image_exts, true );
7591  
7592          case 'audio':
7593              return in_array( $ext, wp_get_audio_extensions(), true );
7594  
7595          case 'video':
7596              return in_array( $ext, wp_get_video_extensions(), true );
7597  
7598          default:
7599              return $type === $ext;
7600      }
7601  }
7602  
7603  /**
7604   * Determines whether an attachment is an image.
7605   *
7606   * For more information on this and similar theme functions, check out
7607   * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
7608   * Conditional Tags} article in the Theme Developer Handbook.
7609   *
7610   * @since 2.1.0
7611   * @since 4.2.0 Modified into wrapper for wp_attachment_is() and
7612   *              allowed WP_Post object to be passed.
7613   *
7614   * @param int|WP_Post $post Optional. Attachment ID or object. Default is global $post.
7615   * @return bool Whether the attachment is an image.
7616   */
7617  function wp_attachment_is_image( $post = null ) {
7618      return wp_attachment_is( 'image', $post );
7619  }
7620  
7621  /**
7622   * Retrieves the icon for a MIME type or attachment.
7623   *
7624   * @since 2.1.0
7625   * @since 6.5.0 Added the `$preferred_ext` parameter.
7626   *
7627   * @param string|int $mime          MIME type or attachment ID.
7628   * @param string     $preferred_ext File format to prefer in return. Default '.png'.
7629   * @return string|false Icon, false otherwise.
7630   */
7631  function wp_mime_type_icon( $mime = 0, $preferred_ext = '.png' ) {
7632      if ( ! is_numeric( $mime ) ) {
7633          $icon = wp_cache_get( "mime_type_icon_$mime" );
7634      }
7635  
7636      // Check if preferred file format variable is present and is a validly formatted file extension.
7637      if ( ! empty( $preferred_ext ) && is_string( $preferred_ext ) && ! str_starts_with( $preferred_ext, '.' ) ) {
7638          $preferred_ext = '.' . strtolower( $preferred_ext );
7639      }
7640  
7641      $post_id = 0;
7642      if ( empty( $icon ) ) {
7643          $post_mimes = array();
7644          if ( is_numeric( $mime ) ) {
7645              $mime = (int) $mime;
7646              $post = get_post( $mime );
7647              if ( $post ) {
7648                  $post_id = (int) $post->ID;
7649                  $file    = get_attached_file( $post_id );
7650                  $ext     = preg_replace( '/^.+?\.([^.]+)$/', '$1', $file );
7651                  if ( ! empty( $ext ) ) {
7652                      $post_mimes[] = $ext;
7653                      $ext_type     = wp_ext2type( $ext );
7654                      if ( $ext_type ) {
7655                          $post_mimes[] = $ext_type;
7656                      }
7657                  }
7658                  $mime = $post->post_mime_type;
7659              } else {
7660                  $mime = 0;
7661              }
7662          } else {
7663              $post_mimes[] = $mime;
7664          }
7665  
7666          $icon_files = wp_cache_get( 'icon_files' );
7667  
7668          if ( ! is_array( $icon_files ) ) {
7669              /**
7670               * Filters the icon directory path.
7671               *
7672               * @since 2.0.0
7673               *
7674               * @param string $path Icon directory absolute path.
7675               */
7676              $icon_dir = apply_filters( 'icon_dir', ABSPATH . WPINC . '/images/media' );
7677  
7678              /**
7679               * Filters the icon directory URI.
7680               *
7681               * @since 2.0.0
7682               *
7683               * @param string $uri Icon directory URI.
7684               */
7685              $icon_dir_uri = apply_filters( 'icon_dir_uri', includes_url( 'images/media' ) );
7686  
7687              /**
7688               * Filters the array of icon directory URIs.
7689               *
7690               * @since 2.5.0
7691               *
7692               * @param string[] $uris Array of icon directory URIs keyed by directory absolute path.
7693               */
7694              $dirs       = apply_filters( 'icon_dirs', array( $icon_dir => $icon_dir_uri ) );
7695              $icon_files = array();
7696              $all_icons  = array();
7697              while ( $dirs ) {
7698                  $keys = array_keys( $dirs );
7699                  $dir  = array_shift( $keys );
7700                  $uri  = array_shift( $dirs );
7701                  $dh   = opendir( $dir );
7702                  if ( $dh ) {
7703                      while ( false !== $file = readdir( $dh ) ) {
7704                          $file = wp_basename( $file );
7705                          if ( str_starts_with( $file, '.' ) ) {
7706                              continue;
7707                          }
7708  
7709                          $ext = strtolower( substr( $file, -4 ) );
7710                          if ( ! in_array( $ext, array( '.svg', '.png', '.gif', '.jpg' ), true ) ) {
7711                              if ( is_dir( "$dir/$file" ) ) {
7712                                  $dirs[ "$dir/$file" ] = "$uri/$file";
7713                              }
7714                              continue;
7715                          }
7716                          $all_icons[ "$dir/$file" ] = "$uri/$file";
7717                          if ( $ext === $preferred_ext ) {
7718                              $icon_files[ "$dir/$file" ] = "$uri/$file";
7719                          }
7720                      }
7721                      closedir( $dh );
7722                  }
7723              }
7724              // If directory only contained icons of a non-preferred format, return those.
7725              if ( empty( $icon_files ) ) {
7726                  $icon_files = $all_icons;
7727              }
7728              wp_cache_add( 'icon_files', $icon_files, 'default', 600 );
7729          }
7730  
7731          $types = array();
7732          // Icon wp_basename - extension = MIME wildcard.
7733          foreach ( $icon_files as $file => $uri ) {
7734              $types[ preg_replace( '/^([^.]*).*$/', '$1', wp_basename( $file ) ) ] =& $icon_files[ $file ];
7735          }
7736  
7737          if ( ! empty( $mime ) ) {
7738              $post_mimes[] = substr( $mime, 0, strpos( $mime, '/' ) );
7739              $post_mimes[] = substr( $mime, strpos( $mime, '/' ) + 1 );
7740              $post_mimes[] = str_replace( '/', '_', $mime );
7741          }
7742  
7743          $matches            = wp_match_mime_types( array_keys( $types ), $post_mimes );
7744          $matches['default'] = array( 'default' );
7745  
7746          foreach ( $matches as $match => $wilds ) {
7747              foreach ( $wilds as $wild ) {
7748                  if ( ! isset( $types[ $wild ] ) ) {
7749                      continue;
7750                  }
7751  
7752                  $icon = $types[ $wild ];
7753                  if ( ! is_numeric( $mime ) ) {
7754                      wp_cache_add( "mime_type_icon_$mime", $icon );
7755                  }
7756                  break 2;
7757              }
7758          }
7759      }
7760  
7761      /**
7762       * Filters the mime type icon.
7763       *
7764       * @since 2.1.0
7765       *
7766       * @param string $icon    Path to the mime type icon.
7767       * @param string $mime    Mime type.
7768       * @param int    $post_id Attachment ID. Will equal 0 if the function passed
7769       *                        the mime type.
7770       */
7771      return apply_filters( 'wp_mime_type_icon', $icon, $mime, $post_id );
7772  }
7773  
7774  /**
7775   * Checks for changed slugs for published post objects and save the old slug.
7776   *
7777   * The function is used when a post object of any type is updated,
7778   * by comparing the current and previous post objects.
7779   *
7780   * If the slug was changed and not already part of the old slugs then it will be
7781   * added to the post meta field ('_wp_old_slug') for storing old slugs for that
7782   * post.
7783   *
7784   * The most logically usage of this function is redirecting changed post objects, so
7785   * that those that linked to an changed post will be redirected to the new post.
7786   *
7787   * @since 2.1.0
7788   *
7789   * @param int     $post_id     Post ID.
7790   * @param WP_Post $post        The post object.
7791   * @param WP_Post $post_before The previous post object.
7792   */
7793  function wp_check_for_changed_slugs( $post_id, $post, $post_before ) {
7794      // Don't bother if it hasn't changed.
7795      if ( $post->post_name === $post_before->post_name ) {
7796          return;
7797      }
7798  
7799      // We're only concerned with published, non-hierarchical objects.
7800      if ( ! ( 'publish' === $post->post_status || ( 'attachment' === $post->post_type && 'inherit' === $post->post_status ) )
7801          || is_post_type_hierarchical( $post->post_type )
7802      ) {
7803          return;
7804      }
7805  
7806      $old_slugs = (array) get_post_meta( $post_id, '_wp_old_slug' );
7807  
7808      // If we haven't added this old slug before, add it now.
7809      if ( ! empty( $post_before->post_name ) && ! in_array( $post_before->post_name, $old_slugs, true ) ) {
7810          add_post_meta( $post_id, '_wp_old_slug', $post_before->post_name );
7811      }
7812  
7813      // If the new slug was used previously, delete it from the list.
7814      if ( in_array( $post->post_name, $old_slugs, true ) ) {
7815          delete_post_meta( $post_id, '_wp_old_slug', $post->post_name );
7816      }
7817  }
7818  
7819  /**
7820   * Checks for changed dates for published post objects and save the old date.
7821   *
7822   * The function is used when a post object of any type is updated,
7823   * by comparing the current and previous post objects.
7824   *
7825   * If the date was changed and not already part of the old dates then it will be
7826   * added to the post meta field ('_wp_old_date') for storing old dates for that
7827   * post.
7828   *
7829   * The most logically usage of this function is redirecting changed post objects, so
7830   * that those that linked to an changed post will be redirected to the new post.
7831   *
7832   * @since 4.9.3
7833   *
7834   * @param int     $post_id     Post ID.
7835   * @param WP_Post $post        The post object.
7836   * @param WP_Post $post_before The previous post object.
7837   */
7838  function wp_check_for_changed_dates( $post_id, $post, $post_before ) {
7839      $previous_date = gmdate( 'Y-m-d', strtotime( $post_before->post_date ) );
7840      $new_date      = gmdate( 'Y-m-d', strtotime( $post->post_date ) );
7841  
7842      // Don't bother if it hasn't changed.
7843      if ( $new_date === $previous_date ) {
7844          return;
7845      }
7846  
7847      // We're only concerned with published, non-hierarchical objects.
7848      if ( ! ( 'publish' === $post->post_status || ( 'attachment' === $post->post_type && 'inherit' === $post->post_status ) )
7849          || is_post_type_hierarchical( $post->post_type )
7850      ) {
7851          return;
7852      }
7853  
7854      $old_dates = (array) get_post_meta( $post_id, '_wp_old_date' );
7855  
7856      // If we haven't added this old date before, add it now.
7857      if ( ! empty( $previous_date ) && ! in_array( $previous_date, $old_dates, true ) ) {
7858          add_post_meta( $post_id, '_wp_old_date', $previous_date );
7859      }
7860  
7861      // If the new slug was used previously, delete it from the list.
7862      if ( in_array( $new_date, $old_dates, true ) ) {
7863          delete_post_meta( $post_id, '_wp_old_date', $new_date );
7864      }
7865  }
7866  
7867  /**
7868   * Retrieves the private post SQL based on capability.
7869   *
7870   * This function provides a standardized way to appropriately select on the
7871   * post_status of a post type. The function will return a piece of SQL code
7872   * that can be added to a WHERE clause; this SQL is constructed to allow all
7873   * published posts, and all private posts to which the user has access.
7874   *
7875   * @since 2.2.0
7876   * @since 4.3.0 Added the ability to pass an array to `$post_type`.
7877   *
7878   * @param string|array $post_type Single post type or an array of post types. Currently only supports 'post' or 'page'.
7879   * @return string SQL code that can be added to a where clause.
7880   */
7881  function get_private_posts_cap_sql( $post_type ) {
7882      return get_posts_by_author_sql( $post_type, false );
7883  }
7884  
7885  /**
7886   * Retrieves the post SQL based on capability, author, and type.
7887   *
7888   * @since 3.0.0
7889   * @since 4.3.0 Introduced the ability to pass an array of post types to `$post_type`.
7890   *
7891   * @see get_private_posts_cap_sql()
7892   * @global wpdb $wpdb WordPress database abstraction object.
7893   *
7894   * @param string|string[] $post_type   Single post type or an array of post types.
7895   * @param bool            $full        Optional. Returns a full WHERE statement instead of just
7896   *                                     an 'andalso' term. Default true.
7897   * @param int             $post_author Optional. Query posts having a single author ID. Default null.
7898   * @param bool            $public_only Optional. Only return public posts. Skips cap checks for
7899   *                                     $current_user.  Default false.
7900   * @return string SQL WHERE code that can be added to a query.
7901   */
7902  function get_posts_by_author_sql( $post_type, $full = true, $post_author = null, $public_only = false ) {
7903      global $wpdb;
7904  
7905      if ( is_array( $post_type ) ) {
7906          $post_types = $post_type;
7907      } else {
7908          $post_types = array( $post_type );
7909      }
7910  
7911      $post_type_clauses = array();
7912      foreach ( $post_types as $post_type ) {
7913          $post_type_obj = get_post_type_object( $post_type );
7914  
7915          if ( ! $post_type_obj ) {
7916              continue;
7917          }
7918  
7919          /**
7920           * Filters the capability to read private posts for a custom post type
7921           * when generating SQL for getting posts by author.
7922           *
7923           * @since 2.2.0
7924           * @deprecated 3.2.0 The hook transitioned from "somewhat useless" to "totally useless".
7925           *
7926           * @param string $cap Capability.
7927           */
7928          $cap = apply_filters_deprecated( 'pub_priv_sql_capability', array( '' ), '3.2.0' );
7929  
7930          if ( ! $cap ) {
7931              $cap = current_user_can( $post_type_obj->cap->read_private_posts );
7932          }
7933  
7934          // Only need to check the cap if $public_only is false.
7935          $post_status_sql = "post_status = 'publish'";
7936  
7937          if ( false === $public_only ) {
7938              if ( $cap ) {
7939                  // Does the user have the capability to view private posts? Guess so.
7940                  $post_status_sql .= " OR post_status = 'private'";
7941              } elseif ( is_user_logged_in() ) {
7942                  // Users can view their own private posts.
7943                  $id = get_current_user_id();
7944                  if ( null === $post_author || ! $full ) {
7945                      $post_status_sql .= " OR post_status = 'private' AND post_author = $id";
7946                  } elseif ( $id === (int) $post_author ) {
7947                      $post_status_sql .= " OR post_status = 'private'";
7948                  } // Else none.
7949              } // Else none.
7950          }
7951  
7952          $post_type_clauses[] = "( post_type = '" . $post_type . "' AND ( $post_status_sql ) )";
7953      }
7954  
7955      if ( empty( $post_type_clauses ) ) {
7956          return $full ? 'WHERE 1 = 0' : '1 = 0';
7957      }
7958  
7959      $sql = '( ' . implode( ' OR ', $post_type_clauses ) . ' )';
7960  
7961      if ( null !== $post_author ) {
7962          $sql .= $wpdb->prepare( ' AND post_author = %d', $post_author );
7963      }
7964  
7965      if ( $full ) {
7966          $sql = 'WHERE ' . $sql;
7967      }
7968  
7969      return $sql;
7970  }
7971  
7972  /**
7973   * Retrieves the most recent time that a post on the site was published.
7974   *
7975   * The server timezone is the default and is the difference between GMT and
7976   * server time. The 'blog' value is the date when the last post was posted.
7977   * The 'gmt' is when the last post was posted in GMT formatted date.
7978   *
7979   * @since 0.71
7980   * @since 4.4.0 The `$post_type` argument was added.
7981   *
7982   * @param string $timezone  Optional. The timezone for the timestamp. Accepts 'server', 'blog', or 'gmt'.
7983   *                          'server' uses the server's internal timezone.
7984   *                          'blog' uses the `post_date` field, which proxies to the timezone set for the site.
7985   *                          'gmt' uses the `post_date_gmt` field.
7986   *                          Default 'server'.
7987   * @param string $post_type Optional. The post type to check. Default 'any'.
7988   * @return string The date of the last post, or false on failure.
7989   */
7990  function get_lastpostdate( $timezone = 'server', $post_type = 'any' ) {
7991      $lastpostdate = _get_last_post_time( $timezone, 'date', $post_type );
7992  
7993      /**
7994       * Filters the most recent time that a post on the site was published.
7995       *
7996       * @since 2.3.0
7997       * @since 5.5.0 Added the `$post_type` parameter.
7998       *
7999       * @param string|false $lastpostdate The most recent time that a post was published,
8000       *                                   in 'Y-m-d H:i:s' format. False on failure.
8001       * @param string       $timezone     Location to use for getting the post published date.
8002       *                                   See get_lastpostdate() for accepted `$timezone` values.
8003       * @param string       $post_type    The post type to check.
8004       */
8005      return apply_filters( 'get_lastpostdate', $lastpostdate, $timezone, $post_type );
8006  }
8007  
8008  /**
8009   * Gets the most recent time that a post on the site was modified.
8010   *
8011   * The server timezone is the default and is the difference between GMT and
8012   * server time. The 'blog' value is just when the last post was modified.
8013   * The 'gmt' is when the last post was modified in GMT time.
8014   *
8015   * @since 1.2.0
8016   * @since 4.4.0 The `$post_type` argument was added.
8017   *
8018   * @param string $timezone  Optional. The timezone for the timestamp. See get_lastpostdate()
8019   *                          for information on accepted values.
8020   *                          Default 'server'.
8021   * @param string $post_type Optional. The post type to check. Default 'any'.
8022   * @return string The timestamp in 'Y-m-d H:i:s' format, or false on failure.
8023   */
8024  function get_lastpostmodified( $timezone = 'server', $post_type = 'any' ) {
8025      /**
8026       * Pre-filter the return value of get_lastpostmodified() before the query is run.
8027       *
8028       * @since 4.4.0
8029       *
8030       * @param string|false $lastpostmodified The most recent time that a post was modified,
8031       *                                       in 'Y-m-d H:i:s' format, or false. Returning anything
8032       *                                       other than false will short-circuit the function.
8033       * @param string       $timezone         Location to use for getting the post modified date.
8034       *                                       See get_lastpostdate() for accepted `$timezone` values.
8035       * @param string       $post_type        The post type to check.
8036       */
8037      $lastpostmodified = apply_filters( 'pre_get_lastpostmodified', false, $timezone, $post_type );
8038  
8039      if ( false !== $lastpostmodified ) {
8040          return $lastpostmodified;
8041      }
8042  
8043      $lastpostmodified = _get_last_post_time( $timezone, 'modified', $post_type );
8044      $lastpostdate     = get_lastpostdate( $timezone, $post_type );
8045  
8046      if ( $lastpostdate > $lastpostmodified ) {
8047          $lastpostmodified = $lastpostdate;
8048      }
8049  
8050      /**
8051       * Filters the most recent time that a post on the site was modified.
8052       *
8053       * @since 2.3.0
8054       * @since 5.5.0 Added the `$post_type` parameter.
8055       *
8056       * @param string|false $lastpostmodified The most recent time that a post was modified,
8057       *                                       in 'Y-m-d H:i:s' format. False on failure.
8058       * @param string       $timezone         Location to use for getting the post modified date.
8059       *                                       See get_lastpostdate() for accepted `$timezone` values.
8060       * @param string       $post_type        The post type to check.
8061       */
8062      return apply_filters( 'get_lastpostmodified', $lastpostmodified, $timezone, $post_type );
8063  }
8064  
8065  /**
8066   * Gets the timestamp of the last time any post was modified or published.
8067   *
8068   * @since 3.1.0
8069   * @since 4.4.0 The `$post_type` argument was added.
8070   * @access private
8071   *
8072   * @global wpdb $wpdb WordPress database abstraction object.
8073   *
8074   * @param string $timezone  The timezone for the timestamp. See get_lastpostdate().
8075   *                          for information on accepted values.
8076   * @param string $field     Post field to check. Accepts 'date' or 'modified'.
8077   * @param string $post_type Optional. The post type to check. Default 'any'.
8078   * @return string|false The timestamp in 'Y-m-d H:i:s' format, or false on failure.
8079   */
8080  function _get_last_post_time( $timezone, $field, $post_type = 'any' ) {
8081      global $wpdb;
8082  
8083      if ( ! in_array( $field, array( 'date', 'modified' ), true ) ) {
8084          return false;
8085      }
8086  
8087      $timezone = strtolower( $timezone );
8088  
8089      $key = "lastpost{$field}:$timezone";
8090      if ( 'any' !== $post_type ) {
8091          $key .= ':' . sanitize_key( $post_type );
8092      }
8093  
8094      $date = wp_cache_get( $key, 'timeinfo' );
8095      if ( false !== $date ) {
8096          return $date;
8097      }
8098  
8099      if ( 'any' === $post_type ) {
8100          $post_types = get_post_types( array( 'public' => true ) );
8101          array_walk( $post_types, array( $wpdb, 'escape_by_ref' ) );
8102          $post_types = "'" . implode( "', '", $post_types ) . "'";
8103      } else {
8104          $post_types = "'" . sanitize_key( $post_type ) . "'";
8105      }
8106  
8107      switch ( $timezone ) {
8108          case 'gmt':
8109              $date = $wpdb->get_var( "SELECT post_{$field}_gmt FROM $wpdb->posts WHERE post_status = 'publish' AND post_type IN ({$post_types}) ORDER BY post_{$field}_gmt DESC LIMIT 1" );
8110              break;
8111          case 'blog':
8112              $date = $wpdb->get_var( "SELECT post_{$field} FROM $wpdb->posts WHERE post_status = 'publish' AND post_type IN ({$post_types}) ORDER BY post_{$field}_gmt DESC LIMIT 1" );
8113              break;
8114          case 'server':
8115              $add_seconds_server = gmdate( 'Z' );
8116              $date               = $wpdb->get_var( "SELECT DATE_ADD(post_{$field}_gmt, INTERVAL '$add_seconds_server' SECOND) FROM $wpdb->posts WHERE post_status = 'publish' AND post_type IN ({$post_types}) ORDER BY post_{$field}_gmt DESC LIMIT 1" );
8117              break;
8118      }
8119  
8120      if ( $date ) {
8121          wp_cache_set( $key, $date, 'timeinfo' );
8122  
8123          return $date;
8124      }
8125  
8126      return false;
8127  }
8128  
8129  /**
8130   * Updates posts in cache.
8131   *
8132   * @since 1.5.1
8133   *
8134   * @param WP_Post[] $posts Array of post objects (passed by reference).
8135   */
8136  function update_post_cache( &$posts ) {
8137      if ( ! $posts ) {
8138          return;
8139      }
8140  
8141      $data = array();
8142      foreach ( $posts as $post ) {
8143          if ( empty( $post->filter ) || 'raw' !== $post->filter ) {
8144              $post = sanitize_post( $post, 'raw' );
8145          }
8146          $data[ $post->ID ] = $post;
8147      }
8148      wp_cache_add_multiple( $data, 'posts' );
8149  }
8150  
8151  /**
8152   * Will clean the post in the cache.
8153   *
8154   * Cleaning means delete from the cache of the post. Will call to clean the term
8155   * object cache associated with the post ID.
8156   *
8157   * This function not run if $_wp_suspend_cache_invalidation is not empty. See
8158   * wp_suspend_cache_invalidation().
8159   *
8160   * @since 2.0.0
8161   *
8162   * @global bool $_wp_suspend_cache_invalidation
8163   *
8164   * @param int|WP_Post $post Post ID or post object to remove from the cache.
8165   */
8166  function clean_post_cache( $post ) {
8167      global $_wp_suspend_cache_invalidation;
8168  
8169      if ( ! empty( $_wp_suspend_cache_invalidation ) ) {
8170          return;
8171      }
8172  
8173      $post = get_post( $post );
8174  
8175      if ( ! $post ) {
8176          return;
8177      }
8178  
8179      wp_cache_delete( $post->ID, 'posts' );
8180      wp_cache_delete( 'post_parent:' . (string) $post->ID, 'posts' );
8181      wp_cache_delete( $post->ID, 'post_meta' );
8182  
8183      clean_object_term_cache( $post->ID, $post->post_type );
8184  
8185      wp_cache_delete( 'wp_get_archives', 'general' );
8186  
8187      /**
8188       * Fires immediately after the given post's cache is cleaned.
8189       *
8190       * @since 2.5.0
8191       *
8192       * @param int     $post_id Post ID.
8193       * @param WP_Post $post    Post object.
8194       */
8195      do_action( 'clean_post_cache', $post->ID, $post );
8196  
8197      if ( 'page' === $post->post_type ) {
8198          wp_cache_delete( 'all_page_ids', 'posts' );
8199  
8200          /**
8201           * Fires immediately after the given page's cache is cleaned.
8202           *
8203           * @since 2.5.0
8204           *
8205           * @param int $post_id Post ID.
8206           */
8207          do_action( 'clean_page_cache', $post->ID );
8208      }
8209  
8210      wp_cache_set_posts_last_changed();
8211  }
8212  
8213  /**
8214   * Updates post, term, and metadata caches for a list of post objects.
8215   *
8216   * @since 1.5.0
8217   *
8218   * @param WP_Post[]       $posts             Array of post objects (passed by reference).
8219   * @param string|string[] $post_type         Optional. Single post type, 'any', or an array of post types.
8220   *                                           Default 'post'.
8221   * @param bool            $update_term_cache Optional. Whether to update the term cache. Default true.
8222   * @param bool            $update_meta_cache Optional. Whether to update the meta cache. Default true.
8223   */
8224  function update_post_caches( &$posts, $post_type = 'post', $update_term_cache = true, $update_meta_cache = true ) {
8225      // No point in doing all this work if we didn't match any posts.
8226      if ( ! $posts ) {
8227          return;
8228      }
8229  
8230      update_post_cache( $posts );
8231  
8232      $post_ids = array();
8233      foreach ( $posts as $post ) {
8234          $post_ids[] = $post->ID;
8235      }
8236  
8237      if ( ! $post_type ) {
8238          $post_type = 'any';
8239      }
8240  
8241      if ( $update_term_cache ) {
8242          if ( is_array( $post_type ) ) {
8243              $ptypes = $post_type;
8244          } elseif ( 'any' === $post_type ) {
8245              $ptypes = array();
8246              // Just use the post_types in the supplied posts.
8247              foreach ( $posts as $post ) {
8248                  $ptypes[] = $post->post_type;
8249              }
8250              $ptypes = array_unique( $ptypes );
8251          } else {
8252              $ptypes = array( $post_type );
8253          }
8254  
8255          if ( ! empty( $ptypes ) ) {
8256              update_object_term_cache( $post_ids, $ptypes );
8257          }
8258      }
8259  
8260      if ( $update_meta_cache ) {
8261          update_postmeta_cache( $post_ids );
8262      }
8263  }
8264  
8265  /**
8266   * Updates post author user caches for a list of post objects.
8267   *
8268   * @since 6.1.0
8269   *
8270   * @param WP_Post[] $posts Array of post objects.
8271   */
8272  function update_post_author_caches( $posts ) {
8273      /*
8274       * cache_users() is a pluggable function so is not available prior
8275       * to the `plugins_loaded` hook firing. This is to ensure against
8276       * fatal errors when the function is not available.
8277       */
8278      if ( ! function_exists( 'cache_users' ) ) {
8279          return;
8280      }
8281  
8282      $author_ids = wp_list_pluck( $posts, 'post_author' );
8283      $author_ids = array_map( 'absint', $author_ids );
8284      $author_ids = array_unique( array_filter( $author_ids ) );
8285  
8286      cache_users( $author_ids );
8287  }
8288  
8289  /**
8290   * Updates parent post caches for a list of post objects.
8291   *
8292   * @since 6.1.0
8293   *
8294   * @param WP_Post[] $posts Array of post objects.
8295   */
8296  function update_post_parent_caches( $posts ) {
8297      $parent_ids = wp_list_pluck( $posts, 'post_parent' );
8298      $parent_ids = array_map( 'absint', $parent_ids );
8299      $parent_ids = array_unique( array_filter( $parent_ids ) );
8300  
8301      if ( ! empty( $parent_ids ) ) {
8302          _prime_post_caches( $parent_ids, false );
8303      }
8304  }
8305  
8306  /**
8307   * Updates metadata cache for a list of post IDs.
8308   *
8309   * Performs SQL query to retrieve the metadata for the post IDs and updates the
8310   * metadata cache for the posts. Therefore, the functions, which call this
8311   * function, do not need to perform SQL queries on their own.
8312   *
8313   * @since 2.1.0
8314   *
8315   * @param int[] $post_ids Array of post IDs.
8316   * @return array|false An array of metadata on success, false if there is nothing to update.
8317   */
8318  function update_postmeta_cache( $post_ids ) {
8319      return update_meta_cache( 'post', $post_ids );
8320  }
8321  
8322  /**
8323   * Will clean the attachment in the cache.
8324   *
8325   * Cleaning means delete from the cache. Optionally will clean the term
8326   * object cache associated with the attachment ID.
8327   *
8328   * This function will not run if $_wp_suspend_cache_invalidation is not empty.
8329   *
8330   * @since 3.0.0
8331   *
8332   * @global bool $_wp_suspend_cache_invalidation
8333   *
8334   * @param int  $id          The attachment ID in the cache to clean.
8335   * @param bool $clean_terms Optional. Whether to clean terms cache. Default false.
8336   */
8337  function clean_attachment_cache( $id, $clean_terms = false ) {
8338      global $_wp_suspend_cache_invalidation;
8339  
8340      if ( ! empty( $_wp_suspend_cache_invalidation ) ) {
8341          return;
8342      }
8343  
8344      $id = (int) $id;
8345  
8346      wp_cache_delete( $id, 'posts' );
8347      wp_cache_delete( $id, 'post_meta' );
8348  
8349      if ( $clean_terms ) {
8350          clean_object_term_cache( $id, 'attachment' );
8351      }
8352  
8353      /**
8354       * Fires after the given attachment's cache is cleaned.
8355       *
8356       * @since 3.0.0
8357       *
8358       * @param int $id Attachment ID.
8359       */
8360      do_action( 'clean_attachment_cache', $id );
8361  }
8362  
8363  //
8364  // Hooks.
8365  //
8366  
8367  /**
8368   * Hook for managing future post transitions to published.
8369   *
8370   * @since 2.3.0
8371   * @access private
8372   *
8373   * @see wp_clear_scheduled_hook()
8374   * @global wpdb $wpdb WordPress database abstraction object.
8375   *
8376   * @param string  $new_status New post status.
8377   * @param string  $old_status Previous post status.
8378   * @param WP_Post $post       Post object.
8379   */
8380  function _transition_post_status( $new_status, $old_status, $post ) {
8381      global $wpdb;
8382  
8383      if ( 'publish' !== $old_status && 'publish' === $new_status ) {
8384          // Reset GUID if transitioning to publish and it is empty.
8385          if ( '' === get_the_guid( $post->ID ) ) {
8386              $wpdb->update( $wpdb->posts, array( 'guid' => get_permalink( $post->ID ) ), array( 'ID' => $post->ID ) );
8387          }
8388  
8389          /**
8390           * Fires when a post's status is transitioned from private to published.
8391           *
8392           * @since 1.5.0
8393           * @deprecated 2.3.0 Use {@see 'private_to_publish'} instead.
8394           *
8395           * @param int $post_id Post ID.
8396           */
8397          do_action_deprecated( 'private_to_published', array( $post->ID ), '2.3.0', 'private_to_publish' );
8398      }
8399  
8400      // If published posts changed clear the lastpostmodified cache.
8401      if ( 'publish' === $new_status || 'publish' === $old_status ) {
8402          foreach ( array( 'server', 'gmt', 'blog' ) as $timezone ) {
8403              wp_cache_delete( "lastpostmodified:$timezone", 'timeinfo' );
8404              wp_cache_delete( "lastpostdate:$timezone", 'timeinfo' );
8405              wp_cache_delete( "lastpostdate:$timezone:{$post->post_type}", 'timeinfo' );
8406          }
8407      }
8408  
8409      if ( $new_status !== $old_status ) {
8410          wp_cache_delete( _count_posts_cache_key( $post->post_type ), 'counts' );
8411          wp_cache_delete( _count_posts_cache_key( $post->post_type, 'readable' ), 'counts' );
8412      }
8413  
8414      // Always clears the hook in case the post status bounced from future to draft.
8415      wp_clear_scheduled_hook( 'publish_future_post', array( $post->ID ) );
8416  }
8417  
8418  /**
8419   * Hook used to schedule publication for a post marked for the future.
8420   *
8421   * The $post properties used and must exist are 'ID' and 'post_date_gmt'.
8422   *
8423   * @since 2.3.0
8424   * @access private
8425   *
8426   * @param int     $deprecated Not used. Can be set to null. Never implemented. Not marked
8427   *                            as deprecated with _deprecated_argument() as it conflicts with
8428   *                            wp_transition_post_status() and the default filter for _future_post_hook().
8429   * @param WP_Post $post       Post object.
8430   */
8431  function _future_post_hook( $deprecated, $post ) {
8432      wp_clear_scheduled_hook( 'publish_future_post', array( $post->ID ) );
8433      wp_schedule_single_event( strtotime( get_gmt_from_date( $post->post_date ) . ' GMT' ), 'publish_future_post', array( $post->ID ) );
8434  }
8435  
8436  /**
8437   * Hook to schedule pings and enclosures when a post is published.
8438   *
8439   * Uses XMLRPC_REQUEST and WP_IMPORTING constants.
8440   *
8441   * @since 2.3.0
8442   * @access private
8443   *
8444   * @param int $post_id The ID of the post being published.
8445   */
8446  function _publish_post_hook( $post_id ) {
8447      if ( defined( 'XMLRPC_REQUEST' ) ) {
8448          /**
8449           * Fires when _publish_post_hook() is called during an XML-RPC request.
8450           *
8451           * @since 2.1.0
8452           *
8453           * @param int $post_id Post ID.
8454           */
8455          do_action( 'xmlrpc_publish_post', $post_id );
8456      }
8457  
8458      if ( defined( 'WP_IMPORTING' ) ) {
8459          return;
8460      }
8461  
8462      if ( get_option( 'default_pingback_flag' ) ) {
8463          add_post_meta( $post_id, '_pingme', '1', true );
8464      }
8465      add_post_meta( $post_id, '_encloseme', '1', true );
8466  
8467      $to_ping = get_to_ping( $post_id );
8468      if ( ! empty( $to_ping ) ) {
8469          add_post_meta( $post_id, '_trackbackme', '1' );
8470      }
8471  
8472      if ( ! wp_next_scheduled( 'do_pings' ) ) {
8473          wp_schedule_single_event( time(), 'do_pings' );
8474      }
8475  }
8476  
8477  /**
8478   * Returns the ID of the post's parent.
8479   *
8480   * @since 3.1.0
8481   * @since 5.9.0 The `$post` parameter was made optional.
8482   *
8483   * @param int|WP_Post|null $post Optional. Post ID or post object. Defaults to global $post.
8484   * @return int|false Post parent ID (which can be 0 if there is no parent),
8485   *                   or false if the post does not exist.
8486   */
8487  function wp_get_post_parent_id( $post = null ) {
8488      $post = get_post( $post );
8489  
8490      if ( ! $post || is_wp_error( $post ) ) {
8491          return false;
8492      }
8493  
8494      return (int) $post->post_parent;
8495  }
8496  
8497  /**
8498   * Checks the given subset of the post hierarchy for hierarchy loops.
8499   *
8500   * Prevents loops from forming and breaks those that it finds. Attached
8501   * to the {@see 'wp_insert_post_parent'} filter.
8502   *
8503   * @since 3.1.0
8504   *
8505   * @see wp_find_hierarchy_loop()
8506   *
8507   * @param int $post_parent ID of the parent for the post we're checking.
8508   * @param int $post_id     ID of the post we're checking.
8509   * @return int The new post_parent for the post, 0 otherwise.
8510   */
8511  function wp_check_post_hierarchy_for_loops( $post_parent, $post_id ) {
8512      // Nothing fancy here - bail.
8513      if ( ! $post_parent ) {
8514          return 0;
8515      }
8516  
8517      // New post can't cause a loop.
8518      if ( ! $post_id ) {
8519          return $post_parent;
8520      }
8521  
8522      // Can't be its own parent.
8523      if ( $post_parent === $post_id ) {
8524          return 0;
8525      }
8526  
8527      // Now look for larger loops.
8528      $loop = wp_find_hierarchy_loop( 'wp_get_post_parent_id', $post_id, $post_parent );
8529      if ( ! $loop ) {
8530          return $post_parent; // No loop.
8531      }
8532  
8533      // Setting $post_parent to the given value causes a loop.
8534      if ( isset( $loop[ $post_id ] ) ) {
8535          return 0;
8536      }
8537  
8538      // There's a loop, but it doesn't contain $post_id. Break the loop.
8539      foreach ( array_keys( $loop ) as $loop_member ) {
8540          wp_update_post(
8541              array(
8542                  'ID'          => $loop_member,
8543                  'post_parent' => 0,
8544              )
8545          );
8546      }
8547  
8548      return $post_parent;
8549  }
8550  
8551  /**
8552   * Sets the post thumbnail (featured image) for the given post.
8553   *
8554   * @since 3.1.0
8555   *
8556   * @param int|WP_Post $post         Post ID or post object where thumbnail should be attached.
8557   * @param int         $thumbnail_id Thumbnail to attach.
8558   * @return int|bool Post meta ID if the key didn't exist (ie. this is the first time that
8559   *                  a thumbnail has been saved for the post), true on successful update,
8560   *                  false on failure or if the value passed is the same as the one that
8561   *                  is already in the database.
8562   */
8563  function set_post_thumbnail( $post, $thumbnail_id ) {
8564      $post         = get_post( $post );
8565      $thumbnail_id = absint( $thumbnail_id );
8566      if ( $post && $thumbnail_id && get_post( $thumbnail_id ) ) {
8567          if ( wp_get_attachment_image( $thumbnail_id, 'thumbnail' ) ) {
8568              return update_post_meta( $post->ID, '_thumbnail_id', $thumbnail_id );
8569          } else {
8570              return delete_post_meta( $post->ID, '_thumbnail_id' );
8571          }
8572      }
8573      return false;
8574  }
8575  
8576  /**
8577   * Removes the thumbnail (featured image) from the given post.
8578   *
8579   * @since 3.3.0
8580   *
8581   * @param int|WP_Post $post Post ID or post object from which the thumbnail should be removed.
8582   * @return bool True on success, false on failure.
8583   */
8584  function delete_post_thumbnail( $post ) {
8585      $post = get_post( $post );
8586      if ( $post ) {
8587          return delete_post_meta( $post->ID, '_thumbnail_id' );
8588      }
8589      return false;
8590  }
8591  
8592  /**
8593   * Deletes auto-drafts for new posts that are > 7 days old.
8594   *
8595   * @since 3.4.0
8596   *
8597   * @global wpdb $wpdb WordPress database abstraction object.
8598   */
8599  function wp_delete_auto_drafts() {
8600      global $wpdb;
8601  
8602      // Cleanup old auto-drafts more than 7 days old.
8603      $old_posts = $wpdb->get_col( "SELECT ID FROM $wpdb->posts WHERE post_status = 'auto-draft' AND DATE_SUB( NOW(), INTERVAL 7 DAY ) > post_date" );
8604      foreach ( (array) $old_posts as $delete ) {
8605          // Force delete.
8606          wp_delete_post( $delete, true );
8607      }
8608  }
8609  
8610  /**
8611   * Queues posts for lazy-loading of term meta.
8612   *
8613   * @since 4.5.0
8614   *
8615   * @param WP_Post[] $posts Array of WP_Post objects.
8616   */
8617  function wp_queue_posts_for_term_meta_lazyload( $posts ) {
8618      $post_type_taxonomies = array();
8619      $prime_post_terms     = array();
8620      foreach ( $posts as $post ) {
8621          if ( ! ( $post instanceof WP_Post ) ) {
8622              continue;
8623          }
8624  
8625          if ( ! isset( $post_type_taxonomies[ $post->post_type ] ) ) {
8626              $post_type_taxonomies[ $post->post_type ] = get_object_taxonomies( $post->post_type );
8627          }
8628  
8629          foreach ( $post_type_taxonomies[ $post->post_type ] as $taxonomy ) {
8630              $prime_post_terms[ $taxonomy ][] = $post->ID;
8631          }
8632      }
8633  
8634      $term_ids = array();
8635      if ( $prime_post_terms ) {
8636          foreach ( $prime_post_terms as $taxonomy => $post_ids ) {
8637              $cached_term_ids = wp_cache_get_multiple( $post_ids, "{$taxonomy}_relationships" );
8638              if ( is_array( $cached_term_ids ) ) {
8639                  $cached_term_ids = array_filter( $cached_term_ids );
8640                  foreach ( $cached_term_ids as $_term_ids ) {
8641                      // Backward compatibility for if a plugin is putting objects into the cache, rather than IDs.
8642                      foreach ( $_term_ids as $term_id ) {
8643                          if ( is_numeric( $term_id ) ) {
8644                              $term_ids[] = (int) $term_id;
8645                          } elseif ( isset( $term_id->term_id ) ) {
8646                              $term_ids[] = (int) $term_id->term_id;
8647                          }
8648                      }
8649                  }
8650              }
8651          }
8652          $term_ids = array_unique( $term_ids );
8653      }
8654  
8655      wp_lazyload_term_meta( $term_ids );
8656  }
8657  
8658  /**
8659   * Updates the custom taxonomies' term counts when a post's status is changed.
8660   *
8661   * For example, default posts term counts (for custom taxonomies) don't include
8662   * private / draft posts.
8663   *
8664   * @since 3.3.0
8665   * @access private
8666   *
8667   * @param string  $new_status New post status.
8668   * @param string  $old_status Old post status.
8669   * @param WP_Post $post       Post object.
8670   */
8671  function _update_term_count_on_transition_post_status( $new_status, $old_status, $post ) {
8672      if ( $new_status === $old_status ) {
8673          return;
8674      }
8675  
8676      // Update counts for the post's terms.
8677      foreach ( (array) get_object_taxonomies( $post->post_type, 'objects' ) as $taxonomy ) {
8678          /** This filter is documented in wp-includes/taxonomy.php */
8679          $counted_statuses = apply_filters( 'update_post_term_count_statuses', array( 'publish' ), $taxonomy );
8680  
8681          /*
8682           * Do not recalculate term count if both the old and new status are not included in term counts.
8683           * This accounts for a transition such as draft -> pending.
8684           */
8685          if ( ! in_array( $old_status, $counted_statuses, true ) && ! in_array( $new_status, $counted_statuses, true ) ) {
8686              continue;
8687          }
8688  
8689          /*
8690           * Do not recalculate term count if both the old and new status are included in term counts.
8691           *
8692           * This accounts for transitioning between statuses which are both included in term counts. This can only occur
8693           * if the `update_post_term_count_statuses` filter is in use to count more than just the 'publish' status.
8694           */
8695          if ( in_array( $old_status, $counted_statuses, true ) && in_array( $new_status, $counted_statuses, true ) ) {
8696              continue;
8697          }
8698  
8699          $tt_ids = wp_get_object_terms( $post->ID, $taxonomy->name, array( 'fields' => 'tt_ids' ) );
8700          wp_update_term_count( $tt_ids, $taxonomy->name );
8701      }
8702  }
8703  
8704  /**
8705   * Adds any posts from the given IDs to the cache that do not already exist in cache.
8706   *
8707   * @since 3.4.0
8708   * @since 6.1.0 This function is no longer marked as "private".
8709   *
8710   * @see update_post_cache()
8711   * @see update_postmeta_cache()
8712   * @see update_object_term_cache()
8713   *
8714   * @global wpdb $wpdb WordPress database abstraction object.
8715   *
8716   * @param int[] $ids               ID list.
8717   * @param bool  $update_term_cache Optional. Whether to update the term cache. Default true.
8718   * @param bool  $update_meta_cache Optional. Whether to update the meta cache. Default true.
8719   */
8720  function _prime_post_caches( $ids, $update_term_cache = true, $update_meta_cache = true ) {
8721      global $wpdb;
8722  
8723      $non_cached_ids = _get_non_cached_ids( $ids, 'posts' );
8724      if ( ! empty( $non_cached_ids ) ) {
8725          $fresh_posts = $wpdb->get_results( sprintf( "SELECT $wpdb->posts.* FROM $wpdb->posts WHERE ID IN (%s)", implode( ',', $non_cached_ids ) ) );
8726  
8727          if ( $fresh_posts ) {
8728              // Despite the name, update_post_cache() expects an array rather than a single post.
8729              update_post_cache( $fresh_posts );
8730          }
8731      }
8732  
8733      if ( $update_meta_cache ) {
8734          update_postmeta_cache( $ids );
8735      }
8736  
8737      if ( $update_term_cache ) {
8738          $post_types = array_map( 'get_post_type', $ids );
8739          $post_types = array_unique( $post_types );
8740          update_object_term_cache( $ids, $post_types );
8741      }
8742  }
8743  
8744  /**
8745   * Prime the cache containing the parent ID of various post objects.
8746   *
8747   * @since 6.4.0
8748   *
8749   * @global wpdb $wpdb WordPress database abstraction object.
8750   *
8751   * @param int[] $ids ID list.
8752   */
8753  function _prime_post_parent_id_caches( array $ids ) {
8754      global $wpdb;
8755  
8756      $ids = array_filter( $ids, '_validate_cache_id' );
8757      $ids = array_unique( array_map( 'intval', $ids ), SORT_NUMERIC );
8758  
8759      if ( empty( $ids ) ) {
8760          return;
8761      }
8762  
8763      $cache_keys = array();
8764      foreach ( $ids as $id ) {
8765          $cache_keys[ $id ] = 'post_parent:' . (string) $id;
8766      }
8767  
8768      $cached_data = wp_cache_get_multiple( array_values( $cache_keys ), 'posts' );
8769  
8770      $non_cached_ids = array();
8771      foreach ( $cache_keys as $id => $cache_key ) {
8772          if ( false === $cached_data[ $cache_key ] ) {
8773              $non_cached_ids[] = $id;
8774          }
8775      }
8776  
8777      if ( ! empty( $non_cached_ids ) ) {
8778          $fresh_posts = $wpdb->get_results( sprintf( "SELECT $wpdb->posts.ID, $wpdb->posts.post_parent FROM $wpdb->posts WHERE ID IN (%s)", implode( ',', $non_cached_ids ) ) );
8779  
8780          if ( $fresh_posts ) {
8781              $post_parent_data = array();
8782              foreach ( $fresh_posts as $fresh_post ) {
8783                  $post_parent_data[ 'post_parent:' . (string) $fresh_post->ID ] = (int) $fresh_post->post_parent;
8784              }
8785  
8786              wp_cache_add_multiple( $post_parent_data, 'posts' );
8787          }
8788      }
8789  }
8790  
8791  /**
8792   * Adds a suffix if any trashed posts have a given slug.
8793   *
8794   * Store its desired (i.e. current) slug so it can try to reclaim it
8795   * if the post is untrashed.
8796   *
8797   * For internal use.
8798   *
8799   * @since 4.5.0
8800   * @access private
8801   *
8802   * @param string $post_name Post slug.
8803   * @param int    $post_id   Optional. Post ID that should be ignored. Default 0.
8804   */
8805  function wp_add_trashed_suffix_to_post_name_for_trashed_posts( $post_name, $post_id = 0 ) {
8806      $trashed_posts_with_desired_slug = get_posts(
8807          array(
8808              'name'         => $post_name,
8809              'post_status'  => 'trash',
8810              'post_type'    => 'any',
8811              'nopaging'     => true,
8812              'post__not_in' => array( $post_id ),
8813          )
8814      );
8815  
8816      if ( ! empty( $trashed_posts_with_desired_slug ) ) {
8817          foreach ( $trashed_posts_with_desired_slug as $_post ) {
8818              wp_add_trashed_suffix_to_post_name_for_post( $_post );
8819          }
8820      }
8821  }
8822  
8823  /**
8824   * Adds a trashed suffix for a given post.
8825   *
8826   * Store its desired (i.e. current) slug so it can try to reclaim it
8827   * if the post is untrashed.
8828   *
8829   * For internal use.
8830   *
8831   * @since 4.5.0
8832   * @access private
8833   *
8834   * @global wpdb $wpdb WordPress database abstraction object.
8835   *
8836   * @param WP_Post $post The post.
8837   * @return string New slug for the post.
8838   */
8839  function wp_add_trashed_suffix_to_post_name_for_post( $post ) {
8840      global $wpdb;
8841  
8842      $post = get_post( $post );
8843  
8844      if ( str_ends_with( $post->post_name, '__trashed' ) ) {
8845          return $post->post_name;
8846      }
8847      add_post_meta( $post->ID, '_wp_desired_post_slug', $post->post_name );
8848      $post_name = wp_truncate_slug( $post->post_name, 191 ) . '__trashed';
8849      $wpdb->update( $wpdb->posts, array( 'post_name' => $post_name ), array( 'ID' => $post->ID ) );
8850      clean_post_cache( $post->ID );
8851      return $post_name;
8852  }
8853  
8854  /**
8855   * Sets the last changed time for the 'posts' cache group.
8856   *
8857   * @since 5.0.0
8858   */
8859  function wp_cache_set_posts_last_changed() {
8860      wp_cache_set_last_changed( 'posts' );
8861  }
8862  
8863  /**
8864   * Gets all available post MIME types for a given post type.
8865   *
8866   * @since 2.5.0
8867   *
8868   * @global wpdb $wpdb WordPress database abstraction object.
8869   *
8870   * @param string $type
8871   * @return string[] An array of MIME types.
8872   */
8873  function get_available_post_mime_types( $type = 'attachment' ) {
8874      global $wpdb;
8875  
8876      /**
8877       * Filters the list of available post MIME types for the given post type.
8878       *
8879       * @since 6.4.0
8880       *
8881       * @param string[]|null $mime_types An array of MIME types. Default null.
8882       * @param string        $type       The post type name. Usually 'attachment' but can be any post type.
8883       */
8884      $mime_types = apply_filters( 'pre_get_available_post_mime_types', null, $type );
8885  
8886      if ( ! is_array( $mime_types ) ) {
8887          $mime_types = $wpdb->get_col( $wpdb->prepare( "SELECT DISTINCT post_mime_type FROM $wpdb->posts WHERE post_type = %s AND post_mime_type != ''", $type ) );
8888      }
8889  
8890      // Remove nulls from returned $mime_types.
8891      return array_values( array_filter( $mime_types ) );
8892  }
8893  
8894  /**
8895   * Retrieves the path to an uploaded image file.
8896   *
8897   * Similar to `get_attached_file()` however some images may have been processed after uploading
8898   * to make them suitable for web use. In this case the attached "full" size file is usually replaced
8899   * with a scaled down version of the original image. This function always returns the path
8900   * to the originally uploaded image file.
8901   *
8902   * @since 5.3.0
8903   * @since 5.4.0 Added the `$unfiltered` parameter.
8904   *
8905   * @param int  $attachment_id Attachment ID.
8906   * @param bool $unfiltered    Optional. Passed through to `get_attached_file()`. Default false.
8907   * @return string|false Path to the original image file or false if the attachment is not an image.
8908   */
8909  function wp_get_original_image_path( $attachment_id, $unfiltered = false ) {
8910      if ( ! wp_attachment_is_image( $attachment_id ) ) {
8911          return false;
8912      }
8913  
8914      $image_meta = wp_get_attachment_metadata( $attachment_id );
8915      $image_file = get_attached_file( $attachment_id, $unfiltered );
8916  
8917      if ( empty( $image_meta['original_image'] ) ) {
8918          $original_image = $image_file;
8919      } else {
8920          $original_image = path_join( dirname( $image_file ), $image_meta['original_image'] );
8921      }
8922  
8923      /**
8924       * Filters the path to the original image.
8925       *
8926       * @since 5.3.0
8927       *
8928       * @param string $original_image Path to original image file.
8929       * @param int    $attachment_id  Attachment ID.
8930       */
8931      return apply_filters( 'wp_get_original_image_path', $original_image, $attachment_id );
8932  }
8933  
8934  /**
8935   * Retrieves the URL to an original attachment image.
8936   *
8937   * Similar to `wp_get_attachment_url()` however some images may have been
8938   * processed after uploading. In this case this function returns the URL
8939   * to the originally uploaded image file.
8940   *
8941   * @since 5.3.0
8942   *
8943   * @param int $attachment_id Attachment post ID.
8944   * @return string|false Attachment image URL, false on error or if the attachment is not an image.
8945   */
8946  function wp_get_original_image_url( $attachment_id ) {
8947      if ( ! wp_attachment_is_image( $attachment_id ) ) {
8948          return false;
8949      }
8950  
8951      $image_url = wp_get_attachment_url( $attachment_id );
8952  
8953      if ( ! $image_url ) {
8954          return false;
8955      }
8956  
8957      $image_meta = wp_get_attachment_metadata( $attachment_id );
8958  
8959      if ( empty( $image_meta['original_image'] ) ) {
8960          $original_image_url = $image_url;
8961      } else {
8962          $original_image_url = path_join( dirname( $image_url ), $image_meta['original_image'] );
8963      }
8964  
8965      /**
8966       * Filters the URL to the original attachment image.
8967       *
8968       * @since 5.3.0
8969       *
8970       * @param string $original_image_url URL to original image.
8971       * @param int    $attachment_id      Attachment ID.
8972       */
8973      return apply_filters( 'wp_get_original_image_url', $original_image_url, $attachment_id );
8974  }
8975  
8976  /**
8977   * Retrieves the edit root of an attachment: the attachment its chain of edits started from.
8978   *
8979   * Editing an image through the `wp/v2/media/<id>/edit` REST endpoint does not change the
8980   * image that was edited. It saves the result as a brand new attachment, so a site can end
8981   * up with a chain of attachments: an upload, a crop of it, a crop of that crop, and so on.
8982   *
8983   * Every attachment created that way stores the ID of the attachment at the top of its chain,
8984   * so this function can find the edit root in one lookup no matter how long the chain is.
8985   *
8986   * Attachments that were uploaded rather than created by editing have no chain of their own,
8987   * and this returns 0 for them.
8988   *
8989   * @since 7.2.0
8990   *
8991   * @param int $attachment_id Attachment ID.
8992   * @return int ID of the attachment the chain of edits started from, or 0 when none is recorded.
8993   */
8994  function wp_get_edit_root_attachment_id( $attachment_id ) {
8995      $edit_root_id = (int) get_post_meta( $attachment_id, '_wp_attachment_edit_root_id', true );
8996  
8997      // An attachment recorded as its own edit root is a broken record rather than a chain.
8998      if ( $edit_root_id <= 0 || $edit_root_id === (int) $attachment_id ) {
8999          return 0;
9000      }
9001  
9002      return $edit_root_id;
9003  }
9004  
9005  /**
9006   * Clears the recorded edit root ID from any attachment pointing at a deleted one.
9007   *
9008   * Without this, attachments created by editing the deleted image would keep pointing at an
9009   * ID that no longer exists, and could later point at an unrelated attachment if WordPress
9010   * reuses that ID.
9011   *
9012   * This only runs when an attachment is deleted for good. On sites where media goes to the
9013   * trash first, attachments keep pointing at the trashed edit root until the trash is emptied.
9014   *
9015   * @since 7.2.0
9016   *
9017   * @access private
9018   *
9019   * @param int $post_id Attachment ID being deleted.
9020   */
9021  function _wp_delete_edit_root_attachment_id( $post_id ) {
9022      $post_id = (int) $post_id;
9023  
9024      if ( $post_id <= 0 ) {
9025          return;
9026      }
9027  
9028      /*
9029       * Deletes the meta from every attachment recording this ID as its edit root. The meta key
9030       * is indexed, so this only scans the rows for attachments created by editing an image,
9031       * and it avoids searching the serialized attachment metadata for the ID.
9032       */
9033      delete_metadata( 'post', 0, '_wp_attachment_edit_root_id', $post_id, true );
9034  }
9035  
9036  /**
9037   * Filters callback which sets the status of an untrashed post to its previous status.
9038   *
9039   * This can be used as a callback on the `wp_untrash_post_status` filter.
9040   *
9041   * @since 5.6.0
9042   *
9043   * @param string $new_status      The new status of the post being restored.
9044   * @param int    $post_id         The ID of the post being restored.
9045   * @param string $previous_status The status of the post at the point where it was trashed.
9046   * @return string The new status of the post.
9047   */
9048  function wp_untrash_post_set_previous_status( $new_status, $post_id, $previous_status ) {
9049      return $previous_status;
9050  }
9051  
9052  /**
9053   * Returns whether the post can be edited in the block editor.
9054   *
9055   * @since 5.0.0
9056   * @since 6.1.0 Moved to wp-includes from wp-admin.
9057   *
9058   * @param int|WP_Post $post Post ID or WP_Post object.
9059   * @return bool Whether the post can be edited in the block editor.
9060   */
9061  function use_block_editor_for_post( $post ) {
9062      $post = get_post( $post );
9063  
9064      if ( ! $post ) {
9065          return false;
9066      }
9067  
9068      // We're in the meta box loader, so don't use the block editor.
9069      if ( is_admin() && isset( $_GET['meta-box-loader'] ) ) {
9070          check_admin_referer( 'meta-box-loader', 'meta-box-loader-nonce' );
9071          return false;
9072      }
9073  
9074      $use_block_editor = use_block_editor_for_post_type( $post->post_type );
9075  
9076      /**
9077       * Filters whether a post is able to be edited in the block editor.
9078       *
9079       * @since 5.0.0
9080       *
9081       * @param bool    $use_block_editor Whether the post can be edited or not.
9082       * @param WP_Post $post             The post being checked.
9083       */
9084      return apply_filters( 'use_block_editor_for_post', $use_block_editor, $post );
9085  }
9086  
9087  /**
9088   * Returns whether a post type is compatible with the block editor.
9089   *
9090   * The block editor depends on the REST API, and if the post type is not shown in the
9091   * REST API, then it won't work with the block editor.
9092   *
9093   * @since 5.0.0
9094   * @since 6.1.0 Moved to wp-includes from wp-admin.
9095   *
9096   * @param string $post_type The post type.
9097   * @return bool Whether the post type can be edited with the block editor.
9098   */
9099  function use_block_editor_for_post_type( $post_type ) {
9100      if ( ! post_type_exists( $post_type ) ) {
9101          return false;
9102      }
9103  
9104      if ( ! post_type_supports( $post_type, 'editor' ) ) {
9105          return false;
9106      }
9107  
9108      $post_type_object = get_post_type_object( $post_type );
9109      if ( $post_type_object && ! $post_type_object->show_in_rest ) {
9110          return false;
9111      }
9112  
9113      /**
9114       * Filters whether a post is able to be edited in the block editor.
9115       *
9116       * @since 5.0.0
9117       *
9118       * @param bool   $use_block_editor  Whether the post type can be edited or not. Default true.
9119       * @param string $post_type         The post type being checked.
9120       */
9121      return apply_filters( 'use_block_editor_for_post_type', true, $post_type );
9122  }
9123  
9124  /**
9125   * Registers any additional post meta fields.
9126   *
9127   * @since 6.3.0 Adds `wp_pattern_sync_status` meta field to the wp_block post type so an unsynced option can be added.
9128   *
9129   * @link https://github.com/WordPress/gutenberg/pull/51144
9130   */
9131  function wp_create_initial_post_meta() {
9132      register_post_meta(
9133          'wp_block',
9134          'wp_pattern_sync_status',
9135          array(
9136              'sanitize_callback' => 'sanitize_text_field',
9137              'single'            => true,
9138              'type'              => 'string',
9139              'show_in_rest'      => array(
9140                  'schema' => array(
9141                      'type' => 'string',
9142                      'enum' => array( 'partial', 'unsynced' ),
9143                  ),
9144              ),
9145          )
9146      );
9147  }


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