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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              '_builtin'              => true, /* internal use only. don't use this when registering your own post type. */
  31              '_edit_link'            => 'post.php?post=%d', /* internal use only. don't use this when registering your own post type. */
  32              'capability_type'       => 'post',
  33              'map_meta_cap'          => true,
  34              'menu_position'         => 5,
  35              'menu_icon'             => 'dashicons-admin-post',
  36              'hierarchical'          => false,
  37              'rewrite'               => false,
  38              'query_var'             => false,
  39              'delete_with_user'      => true,
  40              'supports'              => array( 'title', 'editor', 'author', 'thumbnail', 'excerpt', 'trackbacks', 'custom-fields', 'comments', 'revisions', 'post-formats' ),
  41              'show_in_rest'          => true,
  42              'rest_base'             => 'posts',
  43              'rest_controller_class' => 'WP_REST_Posts_Controller',
  44          )
  45      );
  46  
  47      register_post_type(
  48          'page',
  49          array(
  50              'labels'                => array(
  51                  'name_admin_bar' => _x( 'Page', 'add new from admin bar' ),
  52              ),
  53              'public'                => true,
  54              'publicly_queryable'    => false,
  55              '_builtin'              => true, /* internal use only. don't use this when registering your own post type. */
  56              '_edit_link'            => 'post.php?post=%d', /* internal use only. don't use this when registering your own post type. */
  57              'capability_type'       => 'page',
  58              'map_meta_cap'          => true,
  59              'menu_position'         => 20,
  60              'menu_icon'             => 'dashicons-admin-page',
  61              'hierarchical'          => true,
  62              'rewrite'               => false,
  63              'query_var'             => false,
  64              'delete_with_user'      => true,
  65              'supports'              => array( 'title', 'editor', 'author', 'thumbnail', 'page-attributes', 'custom-fields', 'comments', 'revisions' ),
  66              'show_in_rest'          => true,
  67              'rest_base'             => 'pages',
  68              'rest_controller_class' => 'WP_REST_Posts_Controller',
  69          )
  70      );
  71  
  72      register_post_type(
  73          'attachment',
  74          array(
  75              'labels'                => array(
  76                  'name'           => _x( 'Media', 'post type general name' ),
  77                  'name_admin_bar' => _x( 'Media', 'add new from admin bar' ),
  78                  'add_new'        => __( 'Add New Media File' ),
  79                  'edit_item'      => __( 'Edit Media' ),
  80                  'view_item'      => ( '1' === get_option( 'wp_attachment_pages_enabled' ) ) ? __( 'View Attachment Page' ) : __( 'View Media File' ),
  81                  'attributes'     => __( 'Attachment Attributes' ),
  82              ),
  83              'public'                => true,
  84              'show_ui'               => true,
  85              '_builtin'              => true, /* internal use only. don't use this when registering your own post type. */
  86              '_edit_link'            => 'post.php?post=%d', /* internal use only. don't use this when registering your own post type. */
  87              'capability_type'       => 'post',
  88              'capabilities'          => array(
  89                  'create_posts' => 'upload_files',
  90              ),
  91              'map_meta_cap'          => true,
  92              'menu_icon'             => 'dashicons-admin-media',
  93              'hierarchical'          => false,
  94              'rewrite'               => false,
  95              'query_var'             => false,
  96              'show_in_nav_menus'     => false,
  97              'delete_with_user'      => true,
  98              'supports'              => array( 'title', 'author', 'comments' ),
  99              'show_in_rest'          => true,
 100              'rest_base'             => 'media',
 101              'rest_controller_class' => 'WP_REST_Attachments_Controller',
 102          )
 103      );
 104      add_post_type_support( 'attachment:audio', 'thumbnail' );
 105      add_post_type_support( 'attachment:video', 'thumbnail' );
 106  
 107      register_post_type(
 108          'revision',
 109          array(
 110              'labels'           => array(
 111                  'name'          => __( 'Revisions' ),
 112                  'singular_name' => __( 'Revision' ),
 113              ),
 114              'public'           => false,
 115              '_builtin'         => true, /* internal use only. don't use this when registering your own post type. */
 116              '_edit_link'       => 'revision.php?revision=%d', /* internal use only. don't use this when registering your own post type. */
 117              'capability_type'  => 'post',
 118              'map_meta_cap'     => true,
 119              'hierarchical'     => false,
 120              'rewrite'          => false,
 121              'query_var'        => false,
 122              'can_export'       => false,
 123              'delete_with_user' => true,
 124              'supports'         => array( 'author' ),
 125          )
 126      );
 127  
 128      register_post_type(
 129          'nav_menu_item',
 130          array(
 131              'labels'                => array(
 132                  'name'          => __( 'Navigation Menu Items' ),
 133                  'singular_name' => __( 'Navigation Menu Item' ),
 134              ),
 135              'public'                => false,
 136              '_builtin'              => true, /* internal use only. don't use this when registering your own post type. */
 137              'hierarchical'          => false,
 138              'rewrite'               => false,
 139              'delete_with_user'      => false,
 140              'query_var'             => false,
 141              'map_meta_cap'          => true,
 142              'capability_type'       => array( 'edit_theme_options', 'edit_theme_options' ),
 143              'capabilities'          => array(
 144                  // Meta Capabilities.
 145                  'edit_post'              => 'edit_post',
 146                  'read_post'              => 'read_post',
 147                  'delete_post'            => 'delete_post',
 148                  // Primitive Capabilities.
 149                  'edit_posts'             => 'edit_theme_options',
 150                  'edit_others_posts'      => 'edit_theme_options',
 151                  'delete_posts'           => 'edit_theme_options',
 152                  'publish_posts'          => 'edit_theme_options',
 153                  'read_private_posts'     => 'edit_theme_options',
 154                  'read'                   => 'read',
 155                  'delete_private_posts'   => 'edit_theme_options',
 156                  'delete_published_posts' => 'edit_theme_options',
 157                  'delete_others_posts'    => 'edit_theme_options',
 158                  'edit_private_posts'     => 'edit_theme_options',
 159                  'edit_published_posts'   => 'edit_theme_options',
 160              ),
 161              'show_in_rest'          => true,
 162              'rest_base'             => 'menu-items',
 163              'rest_controller_class' => 'WP_REST_Menu_Items_Controller',
 164          )
 165      );
 166  
 167      register_post_type(
 168          'custom_css',
 169          array(
 170              'labels'           => array(
 171                  'name'          => __( 'Custom CSS' ),
 172                  'singular_name' => __( 'Custom CSS' ),
 173              ),
 174              'public'           => false,
 175              'hierarchical'     => false,
 176              'rewrite'          => false,
 177              'query_var'        => false,
 178              'delete_with_user' => false,
 179              'can_export'       => true,
 180              '_builtin'         => true, /* internal use only. don't use this when registering your own post type. */
 181              'supports'         => array( 'title', 'revisions' ),
 182              'capabilities'     => array(
 183                  'delete_posts'           => 'edit_theme_options',
 184                  'delete_post'            => 'edit_theme_options',
 185                  'delete_published_posts' => 'edit_theme_options',
 186                  'delete_private_posts'   => 'edit_theme_options',
 187                  'delete_others_posts'    => 'edit_theme_options',
 188                  'edit_post'              => 'edit_css',
 189                  'edit_posts'             => 'edit_css',
 190                  'edit_others_posts'      => 'edit_css',
 191                  'edit_published_posts'   => 'edit_css',
 192                  'read_post'              => 'read',
 193                  'read_private_posts'     => 'read',
 194                  'publish_posts'          => 'edit_theme_options',
 195              ),
 196          )
 197      );
 198  
 199      register_post_type(
 200          'customize_changeset',
 201          array(
 202              'labels'           => array(
 203                  'name'               => _x( 'Changesets', 'post type general name' ),
 204                  'singular_name'      => _x( 'Changeset', 'post type singular name' ),
 205                  'add_new'            => __( 'Add New Changeset' ),
 206                  'add_new_item'       => __( 'Add New Changeset' ),
 207                  'new_item'           => __( 'New Changeset' ),
 208                  'edit_item'          => __( 'Edit Changeset' ),
 209                  'view_item'          => __( 'View Changeset' ),
 210                  'all_items'          => __( 'All Changesets' ),
 211                  'search_items'       => __( 'Search Changesets' ),
 212                  'not_found'          => __( 'No changesets found.' ),
 213                  'not_found_in_trash' => __( 'No changesets found in Trash.' ),
 214              ),
 215              'public'           => false,
 216              '_builtin'         => true, /* internal use only. don't use this when registering your own post type. */
 217              'map_meta_cap'     => true,
 218              'hierarchical'     => false,
 219              'rewrite'          => false,
 220              'query_var'        => false,
 221              'can_export'       => false,
 222              'delete_with_user' => false,
 223              'supports'         => array( 'title', 'author' ),
 224              'capability_type'  => 'customize_changeset',
 225              'capabilities'     => array(
 226                  'create_posts'           => 'customize',
 227                  'delete_others_posts'    => 'customize',
 228                  'delete_post'            => 'customize',
 229                  'delete_posts'           => 'customize',
 230                  'delete_private_posts'   => 'customize',
 231                  'delete_published_posts' => 'customize',
 232                  'edit_others_posts'      => 'customize',
 233                  'edit_post'              => 'customize',
 234                  'edit_posts'             => 'customize',
 235                  'edit_private_posts'     => 'customize',
 236                  'edit_published_posts'   => 'do_not_allow',
 237                  'publish_posts'          => 'customize',
 238                  'read'                   => 'read',
 239                  'read_post'              => 'customize',
 240                  'read_private_posts'     => 'customize',
 241              ),
 242          )
 243      );
 244  
 245      register_post_type(
 246          'oembed_cache',
 247          array(
 248              'labels'           => array(
 249                  'name'          => __( 'oEmbed Responses' ),
 250                  'singular_name' => __( 'oEmbed Response' ),
 251              ),
 252              'public'           => false,
 253              'hierarchical'     => false,
 254              'rewrite'          => false,
 255              'query_var'        => false,
 256              'delete_with_user' => false,
 257              'can_export'       => false,
 258              '_builtin'         => true, /* internal use only. don't use this when registering your own post type. */
 259              'supports'         => array(),
 260          )
 261      );
 262  
 263      register_post_type(
 264          'user_request',
 265          array(
 266              'labels'           => array(
 267                  'name'          => __( 'User Requests' ),
 268                  'singular_name' => __( 'User Request' ),
 269              ),
 270              'public'           => false,
 271              '_builtin'         => true, /* internal use only. don't use this when registering your own post type. */
 272              'hierarchical'     => false,
 273              'rewrite'          => false,
 274              'query_var'        => false,
 275              'can_export'       => false,
 276              'delete_with_user' => false,
 277              'supports'         => array(),
 278          )
 279      );
 280  
 281      register_post_type(
 282          'wp_block',
 283          array(
 284              'labels'                => array(
 285                  'name'                     => _x( 'Patterns', 'post type general name' ),
 286                  'singular_name'            => _x( 'Pattern', 'post type singular name' ),
 287                  'add_new'                  => __( 'Add New Pattern' ),
 288                  'add_new_item'             => __( 'Add New Pattern' ),
 289                  'new_item'                 => __( 'New Pattern' ),
 290                  'edit_item'                => __( 'Edit Block Pattern' ),
 291                  'view_item'                => __( 'View Pattern' ),
 292                  'view_items'               => __( 'View Patterns' ),
 293                  'all_items'                => __( 'All Patterns' ),
 294                  'search_items'             => __( 'Search Patterns' ),
 295                  'not_found'                => __( 'No patterns found.' ),
 296                  'not_found_in_trash'       => __( 'No patterns found in Trash.' ),
 297                  'filter_items_list'        => __( 'Filter patterns list' ),
 298                  'items_list_navigation'    => __( 'Patterns list navigation' ),
 299                  'items_list'               => __( 'Patterns list' ),
 300                  'item_published'           => __( 'Pattern published.' ),
 301                  'item_published_privately' => __( 'Pattern published privately.' ),
 302                  'item_reverted_to_draft'   => __( 'Pattern reverted to draft.' ),
 303                  'item_scheduled'           => __( 'Pattern scheduled.' ),
 304                  'item_updated'             => __( 'Pattern updated.' ),
 305              ),
 306              'public'                => false,
 307              '_builtin'              => true, /* internal use only. don't use this when registering your own post type. */
 308              'show_ui'               => true,
 309              'show_in_menu'          => false,
 310              'rewrite'               => false,
 311              'show_in_rest'          => true,
 312              'rest_base'             => 'blocks',
 313              'rest_controller_class' => 'WP_REST_Blocks_Controller',
 314              'capability_type'       => 'block',
 315              'capabilities'          => array(
 316                  // You need to be able to edit posts, in order to read blocks in their raw form.
 317                  'read'                   => 'edit_posts',
 318                  // You need to be able to publish posts, in order to create blocks.
 319                  'create_posts'           => 'publish_posts',
 320                  'edit_posts'             => 'edit_posts',
 321                  'edit_published_posts'   => 'edit_published_posts',
 322                  'delete_published_posts' => 'delete_published_posts',
 323                  // Enables trashing draft posts as well.
 324                  'delete_posts'           => 'delete_posts',
 325                  'edit_others_posts'      => 'edit_others_posts',
 326                  'delete_others_posts'    => 'delete_others_posts',
 327              ),
 328              'map_meta_cap'          => true,
 329              'supports'              => array(
 330                  'title',
 331                  'editor',
 332                  'revisions',
 333                  'custom-fields',
 334              ),
 335          )
 336      );
 337  
 338      $template_edit_link = 'site-editor.php?' . build_query(
 339          array(
 340              'postType' => '%s',
 341              'postId'   => '%s',
 342              'canvas'   => 'edit',
 343          )
 344      );
 345  
 346      register_post_type(
 347          'wp_template',
 348          array(
 349              'labels'                          => array(
 350                  'name'                  => _x( 'Templates', 'post type general name' ),
 351                  'singular_name'         => _x( 'Template', 'post type singular name' ),
 352                  'add_new'               => __( 'Add New Template' ),
 353                  'add_new_item'          => __( 'Add New Template' ),
 354                  'new_item'              => __( 'New Template' ),
 355                  'edit_item'             => __( 'Edit Template' ),
 356                  'view_item'             => __( 'View Template' ),
 357                  'all_items'             => __( 'Templates' ),
 358                  'search_items'          => __( 'Search Templates' ),
 359                  'parent_item_colon'     => __( 'Parent Template:' ),
 360                  'not_found'             => __( 'No templates found.' ),
 361                  'not_found_in_trash'    => __( 'No templates found in Trash.' ),
 362                  'archives'              => __( 'Template archives' ),
 363                  'insert_into_item'      => __( 'Insert into template' ),
 364                  'uploaded_to_this_item' => __( 'Uploaded to this template' ),
 365                  'filter_items_list'     => __( 'Filter templates list' ),
 366                  'items_list_navigation' => __( 'Templates list navigation' ),
 367                  'items_list'            => __( 'Templates list' ),
 368              ),
 369              'description'                     => __( 'Templates to include in your theme.' ),
 370              'public'                          => false,
 371              '_builtin'                        => true, /* internal use only. don't use this when registering your own post type. */
 372              '_edit_link'                      => $template_edit_link, /* internal use only. don't use this when registering your own post type. */
 373              'has_archive'                     => false,
 374              'show_ui'                         => false,
 375              'show_in_menu'                    => false,
 376              'show_in_rest'                    => true,
 377              'rewrite'                         => false,
 378              'rest_base'                       => 'templates',
 379              'rest_controller_class'           => 'WP_REST_Templates_Controller',
 380              'autosave_rest_controller_class'  => 'WP_REST_Template_Autosaves_Controller',
 381              'revisions_rest_controller_class' => 'WP_REST_Template_Revisions_Controller',
 382              'late_route_registration'         => true,
 383              'capability_type'                 => array( 'template', 'templates' ),
 384              'capabilities'                    => array(
 385                  'create_posts'           => 'edit_theme_options',
 386                  'delete_posts'           => 'edit_theme_options',
 387                  'delete_others_posts'    => 'edit_theme_options',
 388                  'delete_private_posts'   => 'edit_theme_options',
 389                  'delete_published_posts' => 'edit_theme_options',
 390                  'edit_posts'             => 'edit_theme_options',
 391                  'edit_others_posts'      => 'edit_theme_options',
 392                  'edit_private_posts'     => 'edit_theme_options',
 393                  'edit_published_posts'   => 'edit_theme_options',
 394                  'publish_posts'          => 'edit_theme_options',
 395                  'read'                   => 'edit_theme_options',
 396                  'read_private_posts'     => 'edit_theme_options',
 397              ),
 398              'map_meta_cap'                    => true,
 399              'supports'                        => array(
 400                  'title',
 401                  'slug',
 402                  'excerpt',
 403                  'editor',
 404                  'revisions',
 405                  'author',
 406              ),
 407          )
 408      );
 409  
 410      register_post_type(
 411          'wp_template_part',
 412          array(
 413              'labels'                          => array(
 414                  'name'                  => _x( 'Template Parts', 'post type general name' ),
 415                  'singular_name'         => _x( 'Template Part', 'post type singular name' ),
 416                  'add_new'               => __( 'Add New Template Part' ),
 417                  'add_new_item'          => __( 'Add New Template Part' ),
 418                  'new_item'              => __( 'New Template Part' ),
 419                  'edit_item'             => __( 'Edit Template Part' ),
 420                  'view_item'             => __( 'View Template Part' ),
 421                  'all_items'             => __( 'Template Parts' ),
 422                  'search_items'          => __( 'Search Template Parts' ),
 423                  'parent_item_colon'     => __( 'Parent Template Part:' ),
 424                  'not_found'             => __( 'No template parts found.' ),
 425                  'not_found_in_trash'    => __( 'No template parts found in Trash.' ),
 426                  'archives'              => __( 'Template part archives' ),
 427                  'insert_into_item'      => __( 'Insert into template part' ),
 428                  'uploaded_to_this_item' => __( 'Uploaded to this template part' ),
 429                  'filter_items_list'     => __( 'Filter template parts list' ),
 430                  'items_list_navigation' => __( 'Template parts list navigation' ),
 431                  'items_list'            => __( 'Template parts list' ),
 432              ),
 433              'description'                     => __( 'Template parts to include in your templates.' ),
 434              'public'                          => false,
 435              '_builtin'                        => true, /* internal use only. don't use this when registering your own post type. */
 436              '_edit_link'                      => $template_edit_link, /* internal use only. don't use this when registering your own post type. */
 437              'has_archive'                     => false,
 438              'show_ui'                         => false,
 439              'show_in_menu'                    => false,
 440              'show_in_rest'                    => true,
 441              'rewrite'                         => false,
 442              'rest_base'                       => 'template-parts',
 443              'rest_controller_class'           => 'WP_REST_Templates_Controller',
 444              'autosave_rest_controller_class'  => 'WP_REST_Template_Autosaves_Controller',
 445              'revisions_rest_controller_class' => 'WP_REST_Template_Revisions_Controller',
 446              'late_route_registration'         => true,
 447              'map_meta_cap'                    => true,
 448              'capabilities'                    => array(
 449                  'create_posts'           => 'edit_theme_options',
 450                  'delete_posts'           => 'edit_theme_options',
 451                  'delete_others_posts'    => 'edit_theme_options',
 452                  'delete_private_posts'   => 'edit_theme_options',
 453                  'delete_published_posts' => 'edit_theme_options',
 454                  'edit_posts'             => 'edit_theme_options',
 455                  'edit_others_posts'      => 'edit_theme_options',
 456                  'edit_private_posts'     => 'edit_theme_options',
 457                  'edit_published_posts'   => 'edit_theme_options',
 458                  'publish_posts'          => 'edit_theme_options',
 459                  'read'                   => 'edit_theme_options',
 460                  'read_private_posts'     => 'edit_theme_options',
 461              ),
 462              'supports'                        => array(
 463                  'title',
 464                  'slug',
 465                  'excerpt',
 466                  'editor',
 467                  'revisions',
 468                  'author',
 469              ),
 470          )
 471      );
 472  
 473      register_post_type(
 474          'wp_global_styles',
 475          array(
 476              'label'        => _x( 'Global Styles', 'post type general name' ),
 477              'description'  => __( 'Global styles to include in themes.' ),
 478              'public'       => false,
 479              '_builtin'     => true, /* internal use only. don't use this when registering your own post type. */
 480              '_edit_link'   => '/site-editor.php?canvas=edit', /* internal use only. don't use this when registering your own post type. */
 481              'show_ui'      => false,
 482              'show_in_rest' => false,
 483              'rewrite'      => false,
 484              'capabilities' => array(
 485                  'read'                   => 'edit_theme_options',
 486                  'create_posts'           => 'edit_theme_options',
 487                  'edit_posts'             => 'edit_theme_options',
 488                  'edit_published_posts'   => 'edit_theme_options',
 489                  'delete_published_posts' => 'edit_theme_options',
 490                  'edit_others_posts'      => 'edit_theme_options',
 491                  'delete_others_posts'    => 'edit_theme_options',
 492              ),
 493              'map_meta_cap' => true,
 494              'supports'     => array(
 495                  'title',
 496                  'editor',
 497                  'revisions',
 498              ),
 499          )
 500      );
 501  
 502      $navigation_post_edit_link = 'site-editor.php?' . build_query(
 503          array(
 504              'postId'   => '%s',
 505              'postType' => 'wp_navigation',
 506              'canvas'   => 'edit',
 507          )
 508      );
 509  
 510      register_post_type(
 511          'wp_navigation',
 512          array(
 513              'labels'                => array(
 514                  'name'                  => _x( 'Navigation Menus', 'post type general name' ),
 515                  'singular_name'         => _x( 'Navigation Menu', 'post type singular name' ),
 516                  'add_new'               => __( 'Add New Navigation Menu' ),
 517                  'add_new_item'          => __( 'Add New Navigation Menu' ),
 518                  'new_item'              => __( 'New Navigation Menu' ),
 519                  'edit_item'             => __( 'Edit Navigation Menu' ),
 520                  'view_item'             => __( 'View Navigation Menu' ),
 521                  'all_items'             => __( 'Navigation Menus' ),
 522                  'search_items'          => __( 'Search Navigation Menus' ),
 523                  'parent_item_colon'     => __( 'Parent Navigation Menu:' ),
 524                  'not_found'             => __( 'No Navigation Menu found.' ),
 525                  'not_found_in_trash'    => __( 'No Navigation Menu found in Trash.' ),
 526                  'archives'              => __( 'Navigation Menu archives' ),
 527                  'insert_into_item'      => __( 'Insert into Navigation Menu' ),
 528                  'uploaded_to_this_item' => __( 'Uploaded to this Navigation Menu' ),
 529                  'filter_items_list'     => __( 'Filter Navigation Menu list' ),
 530                  'items_list_navigation' => __( 'Navigation Menus list navigation' ),
 531                  'items_list'            => __( 'Navigation Menus list' ),
 532              ),
 533              'description'           => __( 'Navigation menus that can be inserted into your site.' ),
 534              'public'                => false,
 535              '_builtin'              => true, /* internal use only. don't use this when registering your own post type. */
 536              '_edit_link'            => $navigation_post_edit_link, /* internal use only. don't use this when registering your own post type. */
 537              'has_archive'           => false,
 538              'show_ui'               => true,
 539              'show_in_menu'          => false,
 540              'show_in_admin_bar'     => false,
 541              'show_in_rest'          => true,
 542              'rewrite'               => false,
 543              'map_meta_cap'          => true,
 544              'capabilities'          => array(
 545                  'edit_others_posts'      => 'edit_theme_options',
 546                  'delete_posts'           => 'edit_theme_options',
 547                  'publish_posts'          => 'edit_theme_options',
 548                  'create_posts'           => 'edit_theme_options',
 549                  'read_private_posts'     => 'edit_theme_options',
 550                  'delete_private_posts'   => 'edit_theme_options',
 551                  'delete_published_posts' => 'edit_theme_options',
 552                  'delete_others_posts'    => 'edit_theme_options',
 553                  'edit_private_posts'     => 'edit_theme_options',
 554                  'edit_published_posts'   => 'edit_theme_options',
 555                  'edit_posts'             => 'edit_theme_options',
 556              ),
 557              'rest_base'             => 'navigation',
 558              'rest_controller_class' => 'WP_REST_Posts_Controller',
 559              'supports'              => array(
 560                  'title',
 561                  'editor',
 562                  'revisions',
 563              ),
 564          )
 565      );
 566  
 567      register_post_type(
 568          'wp_font_family',
 569          array(
 570              'labels'                         => array(
 571                  'name'          => __( 'Font Families' ),
 572                  'singular_name' => __( 'Font Family' ),
 573              ),
 574              'public'                         => false,
 575              '_builtin'                       => true, /* internal use only. don't use this when registering your own post type. */
 576              'hierarchical'                   => false,
 577              'capabilities'                   => array(
 578                  'read'                   => 'edit_theme_options',
 579                  'read_private_posts'     => 'edit_theme_options',
 580                  'create_posts'           => 'edit_theme_options',
 581                  'publish_posts'          => 'edit_theme_options',
 582                  'edit_posts'             => 'edit_theme_options',
 583                  'edit_others_posts'      => 'edit_theme_options',
 584                  'edit_published_posts'   => 'edit_theme_options',
 585                  'delete_posts'           => 'edit_theme_options',
 586                  'delete_others_posts'    => 'edit_theme_options',
 587                  'delete_published_posts' => 'edit_theme_options',
 588              ),
 589              'map_meta_cap'                   => true,
 590              'query_var'                      => false,
 591              'rewrite'                        => false,
 592              'show_in_rest'                   => true,
 593              'rest_base'                      => 'font-families',
 594              'rest_controller_class'          => 'WP_REST_Font_Families_Controller',
 595              // Disable autosave endpoints for font families.
 596              'autosave_rest_controller_class' => 'stdClass',
 597          )
 598      );
 599  
 600      register_post_type(
 601          'wp_font_face',
 602          array(
 603              'labels'                         => array(
 604                  'name'          => __( 'Font Faces' ),
 605                  'singular_name' => __( 'Font Face' ),
 606              ),
 607              'public'                         => false,
 608              '_builtin'                       => true, /* internal use only. don't use this when registering your own post type. */
 609              'hierarchical'                   => false,
 610              'capabilities'                   => array(
 611                  'read'                   => 'edit_theme_options',
 612                  'read_private_posts'     => 'edit_theme_options',
 613                  'create_posts'           => 'edit_theme_options',
 614                  'publish_posts'          => 'edit_theme_options',
 615                  'edit_posts'             => 'edit_theme_options',
 616                  'edit_others_posts'      => 'edit_theme_options',
 617                  'edit_published_posts'   => 'edit_theme_options',
 618                  'delete_posts'           => 'edit_theme_options',
 619                  'delete_others_posts'    => 'edit_theme_options',
 620                  'delete_published_posts' => 'edit_theme_options',
 621              ),
 622              'map_meta_cap'                   => true,
 623              'query_var'                      => false,
 624              'rewrite'                        => false,
 625              'show_in_rest'                   => true,
 626              'rest_base'                      => 'font-families/(?P<font_family_id>[\d]+)/font-faces',
 627              'rest_controller_class'          => 'WP_REST_Font_Faces_Controller',
 628              // Disable autosave endpoints for font faces.
 629              'autosave_rest_controller_class' => 'stdClass',
 630          )
 631      );
 632  
 633      register_post_status(
 634          'publish',
 635          array(
 636              'label'       => _x( 'Published', 'post status' ),
 637              'public'      => true,
 638              '_builtin'    => true, /* internal use only. */
 639              /* translators: %s: Number of published posts. */
 640              'label_count' => _n_noop(
 641                  'Published <span class="count">(%s)</span>',
 642                  'Published <span class="count">(%s)</span>'
 643              ),
 644          )
 645      );
 646  
 647      register_post_status(
 648          'future',
 649          array(
 650              'label'       => _x( 'Scheduled', 'post status' ),
 651              'protected'   => true,
 652              '_builtin'    => true, /* internal use only. */
 653              /* translators: %s: Number of scheduled posts. */
 654              'label_count' => _n_noop(
 655                  'Scheduled <span class="count">(%s)</span>',
 656                  'Scheduled <span class="count">(%s)</span>'
 657              ),
 658          )
 659      );
 660  
 661      register_post_status(
 662          'draft',
 663          array(
 664              'label'         => _x( 'Draft', 'post status' ),
 665              'protected'     => true,
 666              '_builtin'      => true, /* internal use only. */
 667              /* translators: %s: Number of draft posts. */
 668              'label_count'   => _n_noop(
 669                  'Draft <span class="count">(%s)</span>',
 670                  'Drafts <span class="count">(%s)</span>'
 671              ),
 672              'date_floating' => true,
 673          )
 674      );
 675  
 676      register_post_status(
 677          'pending',
 678          array(
 679              'label'         => _x( 'Pending', 'post status' ),
 680              'protected'     => true,
 681              '_builtin'      => true, /* internal use only. */
 682              /* translators: %s: Number of pending posts. */
 683              'label_count'   => _n_noop(
 684                  'Pending <span class="count">(%s)</span>',
 685                  'Pending <span class="count">(%s)</span>'
 686              ),
 687              'date_floating' => true,
 688          )
 689      );
 690  
 691      register_post_status(
 692          'private',
 693          array(
 694              'label'       => _x( 'Private', 'post status' ),
 695              'private'     => true,
 696              '_builtin'    => true, /* internal use only. */
 697              /* translators: %s: Number of private posts. */
 698              'label_count' => _n_noop(
 699                  'Private <span class="count">(%s)</span>',
 700                  'Private <span class="count">(%s)</span>'
 701              ),
 702          )
 703      );
 704  
 705      register_post_status(
 706          'trash',
 707          array(
 708              'label'                     => _x( 'Trash', 'post status' ),
 709              'internal'                  => true,
 710              '_builtin'                  => true, /* internal use only. */
 711              /* translators: %s: Number of trashed posts. */
 712              'label_count'               => _n_noop(
 713                  'Trash <span class="count">(%s)</span>',
 714                  'Trash <span class="count">(%s)</span>'
 715              ),
 716              'show_in_admin_status_list' => true,
 717          )
 718      );
 719  
 720      register_post_status(
 721          'auto-draft',
 722          array(
 723              'label'         => 'auto-draft',
 724              'internal'      => true,
 725              '_builtin'      => true, /* internal use only. */
 726              'date_floating' => true,
 727          )
 728      );
 729  
 730      register_post_status(
 731          'inherit',
 732          array(
 733              'label'               => 'inherit',
 734              'internal'            => true,
 735              '_builtin'            => true, /* internal use only. */
 736              'exclude_from_search' => false,
 737          )
 738      );
 739  
 740      register_post_status(
 741          'request-pending',
 742          array(
 743              'label'               => _x( 'Pending', 'request status' ),
 744              'internal'            => true,
 745              '_builtin'            => true, /* internal use only. */
 746              /* translators: %s: Number of pending requests. */
 747              'label_count'         => _n_noop(
 748                  'Pending <span class="count">(%s)</span>',
 749                  'Pending <span class="count">(%s)</span>'
 750              ),
 751              'exclude_from_search' => false,
 752          )
 753      );
 754  
 755      register_post_status(
 756          'request-confirmed',
 757          array(
 758              'label'               => _x( 'Confirmed', 'request status' ),
 759              'internal'            => true,
 760              '_builtin'            => true, /* internal use only. */
 761              /* translators: %s: Number of confirmed requests. */
 762              'label_count'         => _n_noop(
 763                  'Confirmed <span class="count">(%s)</span>',
 764                  'Confirmed <span class="count">(%s)</span>'
 765              ),
 766              'exclude_from_search' => false,
 767          )
 768      );
 769  
 770      register_post_status(
 771          'request-failed',
 772          array(
 773              'label'               => _x( 'Failed', 'request status' ),
 774              'internal'            => true,
 775              '_builtin'            => true, /* internal use only. */
 776              /* translators: %s: Number of failed requests. */
 777              'label_count'         => _n_noop(
 778                  'Failed <span class="count">(%s)</span>',
 779                  'Failed <span class="count">(%s)</span>'
 780              ),
 781              'exclude_from_search' => false,
 782          )
 783      );
 784  
 785      register_post_status(
 786          'request-completed',
 787          array(
 788              'label'               => _x( 'Completed', 'request status' ),
 789              'internal'            => true,
 790              '_builtin'            => true, /* internal use only. */
 791              /* translators: %s: Number of completed requests. */
 792              'label_count'         => _n_noop(
 793                  'Completed <span class="count">(%s)</span>',
 794                  'Completed <span class="count">(%s)</span>'
 795              ),
 796              'exclude_from_search' => false,
 797          )
 798      );
 799  }
 800  
 801  /**
 802   * Retrieves attached file path based on attachment ID.
 803   *
 804   * By default the path will go through the {@see 'get_attached_file'} filter, but
 805   * passing `true` to the `$unfiltered` argument will return the file path unfiltered.
 806   *
 807   * The function works by retrieving the `_wp_attached_file` post meta value.
 808   * This is a convenience function to prevent looking up the meta name and provide
 809   * a mechanism for sending the attached filename through a filter.
 810   *
 811   * @since 2.0.0
 812   *
 813   * @param int  $attachment_id Attachment ID.
 814   * @param bool $unfiltered    Optional. Whether to skip the {@see 'get_attached_file'} filter.
 815   *                            Default false.
 816   * @return string|false The file path to where the attached file should be, false otherwise.
 817   */
 818  function get_attached_file( $attachment_id, $unfiltered = false ) {
 819      $file = get_post_meta( $attachment_id, '_wp_attached_file', true );
 820  
 821      // If the file is relative, prepend upload dir.
 822      if ( $file && ! str_starts_with( $file, '/' ) && ! preg_match( '|^.:\\\|', $file ) ) {
 823          $uploads = wp_get_upload_dir();
 824          if ( false === $uploads['error'] ) {
 825              $file = $uploads['basedir'] . "/$file";
 826          }
 827      }
 828  
 829      if ( $unfiltered ) {
 830          return $file;
 831      }
 832  
 833      /**
 834       * Filters the attached file based on the given ID.
 835       *
 836       * @since 2.1.0
 837       *
 838       * @param string|false $file          The file path to where the attached file should be, false otherwise.
 839       * @param int          $attachment_id Attachment ID.
 840       */
 841      return apply_filters( 'get_attached_file', $file, $attachment_id );
 842  }
 843  
 844  /**
 845   * Updates attachment file path based on attachment ID.
 846   *
 847   * Used to update the file path of the attachment, which uses post meta name
 848   * '_wp_attached_file' to store the path of the attachment.
 849   *
 850   * @since 2.1.0
 851   *
 852   * @param int    $attachment_id Attachment ID.
 853   * @param string $file          File path for the attachment.
 854   * @return bool True on success, false on failure.
 855   */
 856  function update_attached_file( $attachment_id, $file ) {
 857      if ( ! get_post( $attachment_id ) ) {
 858          return false;
 859      }
 860  
 861      /**
 862       * Filters the path to the attached file to update.
 863       *
 864       * @since 2.1.0
 865       *
 866       * @param string $file          Path to the attached file to update.
 867       * @param int    $attachment_id Attachment ID.
 868       */
 869      $file = apply_filters( 'update_attached_file', $file, $attachment_id );
 870  
 871      $file = _wp_relative_upload_path( $file );
 872      if ( $file ) {
 873          return update_post_meta( $attachment_id, '_wp_attached_file', $file );
 874      } else {
 875          return delete_post_meta( $attachment_id, '_wp_attached_file' );
 876      }
 877  }
 878  
 879  /**
 880   * Returns relative path to an uploaded file.
 881   *
 882   * The path is relative to the current upload dir.
 883   *
 884   * @since 2.9.0
 885   * @access private
 886   *
 887   * @param string $path Full path to the file.
 888   * @return string Relative path on success, unchanged path on failure.
 889   */
 890  function _wp_relative_upload_path( $path ) {
 891      $new_path = $path;
 892  
 893      $uploads = wp_get_upload_dir();
 894      if ( str_starts_with( $new_path, $uploads['basedir'] ) ) {
 895              $new_path = str_replace( $uploads['basedir'], '', $new_path );
 896              $new_path = ltrim( $new_path, '/' );
 897      }
 898  
 899      /**
 900       * Filters the relative path to an uploaded file.
 901       *
 902       * @since 2.9.0
 903       *
 904       * @param string $new_path Relative path to the file.
 905       * @param string $path     Full path to the file.
 906       */
 907      return apply_filters( '_wp_relative_upload_path', $new_path, $path );
 908  }
 909  
 910  /**
 911   * Retrieves all children of the post parent ID.
 912   *
 913   * Normally, without any enhancements, the children would apply to pages. In the
 914   * context of the inner workings of WordPress, pages, posts, and attachments
 915   * share the same table, so therefore the functionality could apply to any one
 916   * of them. It is then noted that while this function does not work on posts, it
 917   * does not mean that it won't work on posts. It is recommended that you know
 918   * what context you wish to retrieve the children of.
 919   *
 920   * Attachments may also be made the child of a post, so if that is an accurate
 921   * statement (which needs to be verified), it would then be possible to get
 922   * all of the attachments for a post. Attachments have since changed since
 923   * version 2.5, so this is most likely inaccurate, but serves generally as an
 924   * example of what is possible.
 925   *
 926   * The arguments listed as defaults are for this function and also of the
 927   * get_posts() function. The arguments are combined with the get_children defaults
 928   * and are then passed to the get_posts() function, which accepts additional arguments.
 929   * You can replace the defaults in this function, listed below and the additional
 930   * arguments listed in the get_posts() function.
 931   *
 932   * The 'post_parent' is the most important argument and important attention
 933   * needs to be paid to the $args parameter. If you pass either an object or an
 934   * integer (number), then just the 'post_parent' is grabbed and everything else
 935   * is lost. If you don't specify any arguments, then it is assumed that you are
 936   * in The Loop and the post parent will be grabbed for from the current post.
 937   *
 938   * The 'post_parent' argument is the ID to get the children. The 'numberposts'
 939   * is the amount of posts to retrieve that has a default of '-1', which is
 940   * used to get all of the posts. Giving a number higher than 0 will only
 941   * retrieve that amount of posts.
 942   *
 943   * The 'post_type' and 'post_status' arguments can be used to choose what
 944   * criteria of posts to retrieve. The 'post_type' can be anything, but WordPress
 945   * post types are 'post', 'pages', and 'attachments'. The 'post_status'
 946   * argument will accept any post status within the write administration panels.
 947   *
 948   * @since 2.0.0
 949   *
 950   * @see get_posts()
 951   * @todo Check validity of description.
 952   *
 953   * @global WP_Post $post Global post object.
 954   *
 955   * @param mixed  $args   Optional. User defined arguments for replacing the defaults. Default empty.
 956   * @param string $output Optional. The required return type. One of OBJECT, ARRAY_A, or ARRAY_N, which
 957   *                       correspond to a WP_Post object, an associative array, or a numeric array,
 958   *                       respectively. Default OBJECT.
 959   * @return WP_Post[]|array[]|int[] Array of post objects, arrays, or IDs, depending on `$output`.
 960   */
 961  function get_children( $args = '', $output = OBJECT ) {
 962      $kids = array();
 963      if ( empty( $args ) ) {
 964          if ( isset( $GLOBALS['post'] ) ) {
 965              $args = array( 'post_parent' => (int) $GLOBALS['post']->post_parent );
 966          } else {
 967              return $kids;
 968          }
 969      } elseif ( is_object( $args ) ) {
 970          $args = array( 'post_parent' => (int) $args->post_parent );
 971      } elseif ( is_numeric( $args ) ) {
 972          $args = array( 'post_parent' => (int) $args );
 973      }
 974  
 975      $defaults = array(
 976          'numberposts' => -1,
 977          'post_type'   => 'any',
 978          'post_status' => 'any',
 979          'post_parent' => 0,
 980      );
 981  
 982      $parsed_args = wp_parse_args( $args, $defaults );
 983  
 984      $children = get_posts( $parsed_args );
 985  
 986      if ( ! $children ) {
 987          return $kids;
 988      }
 989  
 990      if ( ! empty( $parsed_args['fields'] ) ) {
 991          return $children;
 992      }
 993  
 994      update_post_cache( $children );
 995  
 996      foreach ( $children as $key => $child ) {
 997          $kids[ $child->ID ] = $children[ $key ];
 998      }
 999  
1000      if ( OBJECT === $output ) {
1001          return $kids;
1002      } elseif ( ARRAY_A === $output ) {
1003          $weeuns = array();
1004          foreach ( (array) $kids as $kid ) {
1005              $weeuns[ $kid->ID ] = get_object_vars( $kids[ $kid->ID ] );
1006          }
1007          return $weeuns;
1008      } elseif ( ARRAY_N === $output ) {
1009          $babes = array();
1010          foreach ( (array) $kids as $kid ) {
1011              $babes[ $kid->ID ] = array_values( get_object_vars( $kids[ $kid->ID ] ) );
1012          }
1013          return $babes;
1014      } else {
1015          return $kids;
1016      }
1017  }
1018  
1019  /**
1020   * Gets extended entry info (<!--more-->).
1021   *
1022   * There should not be any space after the second dash and before the word
1023   * 'more'. There can be text or space(s) after the word 'more', but won't be
1024   * referenced.
1025   *
1026   * The returned array has 'main', 'extended', and 'more_text' keys. Main has the text before
1027   * the `<!--more-->`. The 'extended' key has the content after the
1028   * `<!--more-->` comment. The 'more_text' key has the custom "Read More" text.
1029   *
1030   * @since 1.0.0
1031   *
1032   * @param string $post Post content.
1033   * @return string[] {
1034   *     Extended entry info.
1035   *
1036   *     @type string $main      Content before the more tag.
1037   *     @type string $extended  Content after the more tag.
1038   *     @type string $more_text Custom read more text, or empty string.
1039   * }
1040   */
1041  function get_extended( $post ) {
1042      // Match the new style more links.
1043      if ( preg_match( '/<!--more(.*?)?-->/', $post, $matches ) ) {
1044          list($main, $extended) = explode( $matches[0], $post, 2 );
1045          $more_text             = $matches[1];
1046      } else {
1047          $main      = $post;
1048          $extended  = '';
1049          $more_text = '';
1050      }
1051  
1052      // Leading and trailing whitespace.
1053      $main      = preg_replace( '/^[\s]*(.*)[\s]*$/', '\\1', $main );
1054      $extended  = preg_replace( '/^[\s]*(.*)[\s]*$/', '\\1', $extended );
1055      $more_text = preg_replace( '/^[\s]*(.*)[\s]*$/', '\\1', $more_text );
1056  
1057      return array(
1058          'main'      => $main,
1059          'extended'  => $extended,
1060          'more_text' => $more_text,
1061      );
1062  }
1063  
1064  /**
1065   * Retrieves post data given a post ID or post object.
1066   *
1067   * See sanitize_post() for optional $filter values. Also, the parameter
1068   * `$post`, must be given as a variable, since it is passed by reference.
1069   *
1070   * @since 1.5.1
1071   *
1072   * @global WP_Post $post Global post object.
1073   *
1074   * @param int|WP_Post|null $post   Optional. Post ID or post object. `null`, `false`, `0` and other PHP falsey values
1075   *                                 return the current global post inside the loop. A numerically valid post ID that
1076   *                                 points to a non-existent post returns `null`. Defaults to global $post.
1077   * @param string           $output Optional. The required return type. One of OBJECT, ARRAY_A, or ARRAY_N, which
1078   *                                 correspond to a WP_Post object, an associative array, or a numeric array,
1079   *                                 respectively. Default OBJECT.
1080   * @param string           $filter Optional. Type of filter to apply. Accepts 'raw', 'edit', 'db',
1081   *                                 or 'display'. Default 'raw'.
1082   * @return WP_Post|array|null Type corresponding to $output on success or null on failure.
1083   *                            When $output is OBJECT, a `WP_Post` instance is returned.
1084   */
1085  function get_post( $post = null, $output = OBJECT, $filter = 'raw' ) {
1086      if ( empty( $post ) && isset( $GLOBALS['post'] ) ) {
1087          $post = $GLOBALS['post'];
1088      }
1089  
1090      if ( $post instanceof WP_Post ) {
1091          $_post = $post;
1092      } elseif ( is_object( $post ) ) {
1093          if ( empty( $post->filter ) ) {
1094              $_post = sanitize_post( $post, 'raw' );
1095              $_post = new WP_Post( $_post );
1096          } elseif ( 'raw' === $post->filter ) {
1097              $_post = new WP_Post( $post );
1098          } else {
1099              $_post = WP_Post::get_instance( $post->ID );
1100          }
1101      } else {
1102          $_post = WP_Post::get_instance( $post );
1103      }
1104  
1105      if ( ! $_post ) {
1106          return null;
1107      }
1108  
1109      $_post = $_post->filter( $filter );
1110  
1111      if ( ARRAY_A === $output ) {
1112          return $_post->to_array();
1113      } elseif ( ARRAY_N === $output ) {
1114          return array_values( $_post->to_array() );
1115      }
1116  
1117      return $_post;
1118  }
1119  
1120  /**
1121   * Retrieves the IDs of the ancestors of a post.
1122   *
1123   * @since 2.5.0
1124   *
1125   * @param int|WP_Post $post Post ID or post object.
1126   * @return int[] Array of ancestor IDs or empty array if there are none.
1127   */
1128  function get_post_ancestors( $post ) {
1129      $post = get_post( $post );
1130  
1131      if ( ! $post || empty( $post->post_parent ) || $post->post_parent == $post->ID ) {
1132          return array();
1133      }
1134  
1135      $ancestors = array();
1136  
1137      $id          = $post->post_parent;
1138      $ancestors[] = $id;
1139  
1140      while ( $ancestor = get_post( $id ) ) {
1141          // Loop detection: If the ancestor has been seen before, break.
1142          if ( empty( $ancestor->post_parent ) || ( $ancestor->post_parent == $post->ID ) || in_array( $ancestor->post_parent, $ancestors, true ) ) {
1143              break;
1144          }
1145  
1146          $id          = $ancestor->post_parent;
1147          $ancestors[] = $id;
1148      }
1149  
1150      return $ancestors;
1151  }
1152  
1153  /**
1154   * Retrieves data from a post field based on Post ID.
1155   *
1156   * Examples of the post field will be, 'post_type', 'post_status', 'post_content',
1157   * etc and based off of the post object property or key names.
1158   *
1159   * The context values are based off of the taxonomy filter functions and
1160   * supported values are found within those functions.
1161   *
1162   * @since 2.3.0
1163   * @since 4.5.0 The `$post` parameter was made optional.
1164   *
1165   * @see sanitize_post_field()
1166   *
1167   * @param string      $field   Post field name.
1168   * @param int|WP_Post $post    Optional. Post ID or post object. Defaults to global $post.
1169   * @param string      $context Optional. How to filter the field. Accepts 'raw', 'edit', 'db',
1170   *                             or 'display'. Default 'display'.
1171   * @return string The value of the post field on success, empty string on failure.
1172   */
1173  function get_post_field( $field, $post = null, $context = 'display' ) {
1174      $post = get_post( $post );
1175  
1176      if ( ! $post ) {
1177          return '';
1178      }
1179  
1180      if ( ! isset( $post->$field ) ) {
1181          return '';
1182      }
1183  
1184      return sanitize_post_field( $field, $post->$field, $post->ID, $context );
1185  }
1186  
1187  /**
1188   * Retrieves the mime type of an attachment based on the ID.
1189   *
1190   * This function can be used with any post type, but it makes more sense with
1191   * attachments.
1192   *
1193   * @since 2.0.0
1194   *
1195   * @param int|WP_Post $post Optional. Post ID or post object. Defaults to global $post.
1196   * @return string|false The mime type on success, false on failure.
1197   */
1198  function get_post_mime_type( $post = null ) {
1199      $post = get_post( $post );
1200  
1201      if ( is_object( $post ) ) {
1202          return $post->post_mime_type;
1203      }
1204  
1205      return false;
1206  }
1207  
1208  /**
1209   * Retrieves the post status based on the post ID.
1210   *
1211   * If the post ID is of an attachment, then the parent post status will be given
1212   * instead.
1213   *
1214   * @since 2.0.0
1215   *
1216   * @param int|WP_Post $post Optional. Post ID or post object. Defaults to global $post.
1217   * @return string|false Post status on success, false on failure.
1218   */
1219  function get_post_status( $post = null ) {
1220      $post = get_post( $post );
1221  
1222      if ( ! is_object( $post ) ) {
1223          return false;
1224      }
1225  
1226      $post_status = $post->post_status;
1227  
1228      if (
1229          'attachment' === $post->post_type &&
1230          'inherit' === $post_status
1231      ) {
1232          if (
1233              0 === $post->post_parent ||
1234              ! get_post( $post->post_parent ) ||
1235              $post->ID === $post->post_parent
1236          ) {
1237              // Unattached attachments with inherit status are assumed to be published.
1238              $post_status = 'publish';
1239          } elseif ( 'trash' === get_post_status( $post->post_parent ) ) {
1240              // Get parent status prior to trashing.
1241              $post_status = get_post_meta( $post->post_parent, '_wp_trash_meta_status', true );
1242  
1243              if ( ! $post_status ) {
1244                  // Assume publish as above.
1245                  $post_status = 'publish';
1246              }
1247          } else {
1248              $post_status = get_post_status( $post->post_parent );
1249          }
1250      } elseif (
1251          'attachment' === $post->post_type &&
1252          ! in_array( $post_status, array( 'private', 'trash', 'auto-draft' ), true )
1253      ) {
1254          /*
1255           * Ensure uninherited attachments have a permitted status either 'private', 'trash', 'auto-draft'.
1256           * This is to match the logic in wp_insert_post().
1257           *
1258           * Note: 'inherit' is excluded from this check as it is resolved to the parent post's
1259           * status in the logic block above.
1260           */
1261          $post_status = 'publish';
1262      }
1263  
1264      /**
1265       * Filters the post status.
1266       *
1267       * @since 4.4.0
1268       * @since 5.7.0 The attachment post type is now passed through this filter.
1269       *
1270       * @param string  $post_status The post status.
1271       * @param WP_Post $post        The post object.
1272       */
1273      return apply_filters( 'get_post_status', $post_status, $post );
1274  }
1275  
1276  /**
1277   * Retrieves all of the WordPress supported post statuses.
1278   *
1279   * Posts have a limited set of valid status values, this provides the
1280   * post_status values and descriptions.
1281   *
1282   * @since 2.5.0
1283   *
1284   * @return string[] Array of post status labels keyed by their status.
1285   */
1286  function get_post_statuses() {
1287      $status = array(
1288          'draft'   => __( 'Draft' ),
1289          'pending' => __( 'Pending Review' ),
1290          'private' => __( 'Private' ),
1291          'publish' => __( 'Published' ),
1292      );
1293  
1294      return $status;
1295  }
1296  
1297  /**
1298   * Retrieves all of the WordPress support page statuses.
1299   *
1300   * Pages have a limited set of valid status values, this provides the
1301   * post_status values and descriptions.
1302   *
1303   * @since 2.5.0
1304   *
1305   * @return string[] Array of page status labels keyed by their status.
1306   */
1307  function get_page_statuses() {
1308      $status = array(
1309          'draft'   => __( 'Draft' ),
1310          'private' => __( 'Private' ),
1311          'publish' => __( 'Published' ),
1312      );
1313  
1314      return $status;
1315  }
1316  
1317  /**
1318   * Returns statuses for privacy requests.
1319   *
1320   * @since 4.9.6
1321   * @access private
1322   *
1323   * @return string[] Array of privacy request status labels keyed by their status.
1324   */
1325  function _wp_privacy_statuses() {
1326      return array(
1327          'request-pending'   => _x( 'Pending', 'request status' ),      // Pending confirmation from user.
1328          'request-confirmed' => _x( 'Confirmed', 'request status' ),    // User has confirmed the action.
1329          'request-failed'    => _x( 'Failed', 'request status' ),       // User failed to confirm the action.
1330          'request-completed' => _x( 'Completed', 'request status' ),    // Admin has handled the request.
1331      );
1332  }
1333  
1334  /**
1335   * Registers a post status. Do not use before init.
1336   *
1337   * A simple function for creating or modifying a post status based on the
1338   * parameters given. The function will accept an array (second optional
1339   * parameter), along with a string for the post status name.
1340   *
1341   * Arguments prefixed with an _underscore shouldn't be used by plugins and themes.
1342   *
1343   * @since 3.0.0
1344   *
1345   * @global stdClass[] $wp_post_statuses Inserts new post status object into the list
1346   *
1347   * @param string       $post_status Name of the post status.
1348   * @param array|string $args {
1349   *     Optional. Array or string of post status arguments.
1350   *
1351   *     @type bool|string $label                     A descriptive name for the post status marked
1352   *                                                  for translation. Defaults to value of $post_status.
1353   *     @type array|false $label_count               Nooped plural text from _n_noop() to provide the singular
1354   *                                                  and plural forms of the label for counts. Default false
1355   *                                                  which means the `$label` argument will be used for both
1356   *                                                  the singular and plural forms of this label.
1357   *     @type bool        $exclude_from_search       Whether to exclude posts with this post status
1358   *                                                  from search results. Default is value of $internal.
1359   *     @type bool        $_builtin                  Whether the status is built-in. Core-use only.
1360   *                                                  Default false.
1361   *     @type bool        $public                    Whether posts of this status should be shown
1362   *                                                  in the front end of the site. Default false.
1363   *     @type bool        $internal                  Whether the status is for internal use only.
1364   *                                                  Default false.
1365   *     @type bool        $protected                 Whether posts with this status should be protected.
1366   *                                                  Default false.
1367   *     @type bool        $private                   Whether posts with this status should be private.
1368   *                                                  Default false.
1369   *     @type bool        $publicly_queryable        Whether posts with this status should be publicly-
1370   *                                                  queryable. Default is value of $public.
1371   *     @type bool        $show_in_admin_all_list    Whether to include posts in the edit listing for
1372   *                                                  their post type. Default is the opposite value
1373   *                                                  of $internal.
1374   *     @type bool        $show_in_admin_status_list Show in the list of statuses with post counts at
1375   *                                                  the top of the edit listings,
1376   *                                                  e.g. All (12) | Published (9) | My Custom Status (2)
1377   *                                                  Default is the opposite value of $internal.
1378   *     @type bool        $date_floating             Whether the post has a floating creation date.
1379   *                                                  Default to false.
1380   * }
1381   * @return object
1382   */
1383  function register_post_status( $post_status, $args = array() ) {
1384      global $wp_post_statuses;
1385  
1386      if ( ! is_array( $wp_post_statuses ) ) {
1387          $wp_post_statuses = array();
1388      }
1389  
1390      // Args prefixed with an underscore are reserved for internal use.
1391      $defaults = array(
1392          'label'                     => false,
1393          'label_count'               => false,
1394          'exclude_from_search'       => null,
1395          '_builtin'                  => false,
1396          'public'                    => null,
1397          'internal'                  => null,
1398          'protected'                 => null,
1399          'private'                   => null,
1400          'publicly_queryable'        => null,
1401          'show_in_admin_status_list' => null,
1402          'show_in_admin_all_list'    => null,
1403          'date_floating'             => null,
1404      );
1405      $args     = wp_parse_args( $args, $defaults );
1406      $args     = (object) $args;
1407  
1408      $post_status = sanitize_key( $post_status );
1409      $args->name  = $post_status;
1410  
1411      // Set various defaults.
1412      if ( null === $args->public && null === $args->internal && null === $args->protected && null === $args->private ) {
1413          $args->internal = true;
1414      }
1415  
1416      if ( null === $args->public ) {
1417          $args->public = false;
1418      }
1419  
1420      if ( null === $args->private ) {
1421          $args->private = false;
1422      }
1423  
1424      if ( null === $args->protected ) {
1425          $args->protected = false;
1426      }
1427  
1428      if ( null === $args->internal ) {
1429          $args->internal = false;
1430      }
1431  
1432      if ( null === $args->publicly_queryable ) {
1433          $args->publicly_queryable = $args->public;
1434      }
1435  
1436      if ( null === $args->exclude_from_search ) {
1437          $args->exclude_from_search = $args->internal;
1438      }
1439  
1440      if ( null === $args->show_in_admin_all_list ) {
1441          $args->show_in_admin_all_list = ! $args->internal;
1442      }
1443  
1444      if ( null === $args->show_in_admin_status_list ) {
1445          $args->show_in_admin_status_list = ! $args->internal;
1446      }
1447  
1448      if ( null === $args->date_floating ) {
1449          $args->date_floating = false;
1450      }
1451  
1452      if ( false === $args->label ) {
1453          $args->label = $post_status;
1454      }
1455  
1456      if ( false === $args->label_count ) {
1457          // phpcs:ignore WordPress.WP.I18n.NonSingularStringLiteralSingular,WordPress.WP.I18n.NonSingularStringLiteralPlural
1458          $args->label_count = _n_noop( $args->label, $args->label );
1459      }
1460  
1461      $wp_post_statuses[ $post_status ] = $args;
1462  
1463      return $args;
1464  }
1465  
1466  /**
1467   * Retrieves a post status object by name.
1468   *
1469   * @since 3.0.0
1470   *
1471   * @global stdClass[] $wp_post_statuses List of post statuses.
1472   *
1473   * @see register_post_status()
1474   *
1475   * @param string $post_status The name of a registered post status.
1476   * @return stdClass|null A post status object.
1477   */
1478  function get_post_status_object( $post_status ) {
1479      global $wp_post_statuses;
1480  
1481      if ( empty( $wp_post_statuses[ $post_status ] ) ) {
1482          return null;
1483      }
1484  
1485      return $wp_post_statuses[ $post_status ];
1486  }
1487  
1488  /**
1489   * Gets a list of post statuses.
1490   *
1491   * @since 3.0.0
1492   *
1493   * @global stdClass[] $wp_post_statuses List of post statuses.
1494   *
1495   * @see register_post_status()
1496   *
1497   * @param array|string $args     Optional. Array or string of post status arguments to compare against
1498   *                               properties of the global `$wp_post_statuses objects`. Default empty array.
1499   * @param string       $output   Optional. The type of output to return, either 'names' or 'objects'. Default 'names'.
1500   * @param string       $operator Optional. The logical operation to perform. 'or' means only one element
1501   *                               from the array needs to match; 'and' means all elements must match.
1502   *                               Default 'and'.
1503   * @return string[]|stdClass[] A list of post status names or objects.
1504   */
1505  function get_post_stati( $args = array(), $output = 'names', $operator = 'and' ) {
1506      global $wp_post_statuses;
1507  
1508      $field = ( 'names' === $output ) ? 'name' : false;
1509  
1510      return wp_filter_object_list( $wp_post_statuses, $args, $operator, $field );
1511  }
1512  
1513  /**
1514   * Determines whether the post type is hierarchical.
1515   *
1516   * A false return value might also mean that the post type does not exist.
1517   *
1518   * @since 3.0.0
1519   *
1520   * @see get_post_type_object()
1521   *
1522   * @param string $post_type Post type name
1523   * @return bool Whether post type is hierarchical.
1524   */
1525  function is_post_type_hierarchical( $post_type ) {
1526      if ( ! post_type_exists( $post_type ) ) {
1527          return false;
1528      }
1529  
1530      $post_type = get_post_type_object( $post_type );
1531      return $post_type->hierarchical;
1532  }
1533  
1534  /**
1535   * Determines whether a post type is registered.
1536   *
1537   * For more information on this and similar theme functions, check out
1538   * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
1539   * Conditional Tags} article in the Theme Developer Handbook.
1540   *
1541   * @since 3.0.0
1542   *
1543   * @see get_post_type_object()
1544   *
1545   * @param string $post_type Post type name.
1546   * @return bool Whether post type is registered.
1547   */
1548  function post_type_exists( $post_type ) {
1549      return (bool) get_post_type_object( $post_type );
1550  }
1551  
1552  /**
1553   * Retrieves the post type of the current post or of a given post.
1554   *
1555   * @since 2.1.0
1556   *
1557   * @param int|WP_Post|null $post Optional. Post ID or post object. Default is global $post.
1558   * @return string|false          Post type on success, false on failure.
1559   */
1560  function get_post_type( $post = null ) {
1561      $post = get_post( $post );
1562      if ( $post ) {
1563          return $post->post_type;
1564      }
1565  
1566      return false;
1567  }
1568  
1569  /**
1570   * Retrieves a post type object by name.
1571   *
1572   * @since 3.0.0
1573   * @since 4.6.0 Object returned is now an instance of `WP_Post_Type`.
1574   *
1575   * @global array $wp_post_types List of post types.
1576   *
1577   * @see register_post_type()
1578   *
1579   * @param string $post_type The name of a registered post type.
1580   * @return WP_Post_Type|null WP_Post_Type object if it exists, null otherwise.
1581   */
1582  function get_post_type_object( $post_type ) {
1583      global $wp_post_types;
1584  
1585      if ( ! is_scalar( $post_type ) || empty( $wp_post_types[ $post_type ] ) ) {
1586          return null;
1587      }
1588  
1589      return $wp_post_types[ $post_type ];
1590  }
1591  
1592  /**
1593   * Gets a list of all registered post type objects.
1594   *
1595   * @since 2.9.0
1596   *
1597   * @global array $wp_post_types List of post types.
1598   *
1599   * @see register_post_type() for accepted arguments.
1600   *
1601   * @param array|string $args     Optional. An array of key => value arguments to match against
1602   *                               the post type objects. Default empty array.
1603   * @param string       $output   Optional. The type of output to return. Either 'names'
1604   *                               or 'objects'. Default 'names'.
1605   * @param string       $operator Optional. The logical operation to perform. 'or' means only one
1606   *                               element from the array needs to match; 'and' means all elements
1607   *                               must match; 'not' means no elements may match. Default 'and'.
1608   * @return string[]|WP_Post_Type[] An array of post type names or objects.
1609   */
1610  function get_post_types( $args = array(), $output = 'names', $operator = 'and' ) {
1611      global $wp_post_types;
1612  
1613      $field = ( 'names' === $output ) ? 'name' : false;
1614  
1615      return wp_filter_object_list( $wp_post_types, $args, $operator, $field );
1616  }
1617  
1618  /**
1619   * Registers a post type.
1620   *
1621   * Note: Post type registrations should not be hooked before the
1622   * {@see 'init'} action. Also, any taxonomy connections should be
1623   * registered via the `$taxonomies` argument to ensure consistency
1624   * when hooks such as {@see 'parse_query'} or {@see 'pre_get_posts'}
1625   * are used.
1626   *
1627   * Post types can support any number of built-in core features such
1628   * as meta boxes, custom fields, post thumbnails, post statuses,
1629   * comments, and more. See the `$supports` argument for a complete
1630   * list of supported features.
1631   *
1632   * @since 2.9.0
1633   * @since 3.0.0 The `show_ui` argument is now enforced on the new post screen.
1634   * @since 4.4.0 The `show_ui` argument is now enforced on the post type listing
1635   *              screen and post editing screen.
1636   * @since 4.6.0 Post type object returned is now an instance of `WP_Post_Type`.
1637   * @since 4.7.0 Introduced `show_in_rest`, `rest_base` and `rest_controller_class`
1638   *              arguments to register the post type in REST API.
1639   * @since 5.0.0 The `template` and `template_lock` arguments were added.
1640   * @since 5.3.0 The `supports` argument will now accept an array of arguments for a feature.
1641   * @since 5.9.0 The `rest_namespace` argument was added.
1642   *
1643   * @global array $wp_post_types List of post types.
1644   *
1645   * @param string       $post_type Post type key. Must not exceed 20 characters and may only contain
1646   *                                lowercase alphanumeric characters, dashes, and underscores. See sanitize_key().
1647   * @param array|string $args {
1648   *     Array or string of arguments for registering a post type.
1649   *
1650   *     @type string       $label                           Name of the post type shown in the menu. Usually plural.
1651   *                                                         Default is value of $labels['name'].
1652   *     @type string[]     $labels                          An array of labels for this post type. If not set, post
1653   *                                                         labels are inherited for non-hierarchical types and page
1654   *                                                         labels for hierarchical ones. See get_post_type_labels() for a full
1655   *                                                         list of supported labels.
1656   *     @type string       $description                     A short descriptive summary of what the post type is.
1657   *                                                         Default empty.
1658   *     @type bool         $public                          Whether a post type is intended for use publicly either via
1659   *                                                         the admin interface or by front-end users. While the default
1660   *                                                         settings of $exclude_from_search, $publicly_queryable, $show_ui,
1661   *                                                         and $show_in_nav_menus are inherited from $public, each does not
1662   *                                                         rely on this relationship and controls a very specific intention.
1663   *                                                         Default false.
1664   *     @type bool         $hierarchical                    Whether the post type is hierarchical (e.g. page). Default false.
1665   *     @type bool         $exclude_from_search             Whether to exclude posts with this post type from front end search
1666   *                                                         results. Default is the opposite value of $public.
1667   *     @type bool         $publicly_queryable              Whether queries can be performed on the front end for the post type
1668   *                                                         as part of parse_request(). Endpoints would include:
1669   *                                                          * ?post_type={post_type_key}
1670   *                                                          * ?{post_type_key}={single_post_slug}
1671   *                                                          * ?{post_type_query_var}={single_post_slug}
1672   *                                                         If not set, the default is inherited from $public.
1673   *     @type bool         $show_ui                         Whether to generate and allow a UI for managing this post type in the
1674   *                                                         admin. Default is value of $public.
1675   *     @type bool|string  $show_in_menu                    Where to show the post type in the admin menu. To work, $show_ui
1676   *                                                         must be true. If true, the post type is shown in its own top level
1677   *                                                         menu. If false, no menu is shown. If a string of an existing top
1678   *                                                         level menu ('tools.php' or 'edit.php?post_type=page', for example), the
1679   *                                                         post type will be placed as a sub-menu of that.
1680   *                                                         Default is value of $show_ui.
1681   *     @type bool         $show_in_nav_menus               Makes this post type available for selection in navigation menus.
1682   *                                                         Default is value of $public.
1683   *     @type bool         $show_in_admin_bar               Makes this post type available via the admin bar. Default is value
1684   *                                                         of $show_in_menu.
1685   *     @type bool         $show_in_rest                    Whether to include the post type in the REST API. Set this to true
1686   *                                                         for the post type to be available in the block editor.
1687   *     @type string       $rest_base                       To change the base URL of REST API route. Default is $post_type.
1688   *     @type string       $rest_namespace                  To change the namespace URL of REST API route. Default is wp/v2.
1689   *     @type string       $rest_controller_class           REST API controller class name. Default is 'WP_REST_Posts_Controller'.
1690   *     @type string|bool  $autosave_rest_controller_class  REST API controller class name. Default is 'WP_REST_Autosaves_Controller'.
1691   *     @type string|bool  $revisions_rest_controller_class REST API controller class name. Default is 'WP_REST_Revisions_Controller'.
1692   *     @type bool         $late_route_registration         A flag to direct the REST API controllers for autosave / revisions
1693   *                                                         should be registered before/after the post type controller.
1694   *     @type int          $menu_position                   The position in the menu order the post type should appear. To work,
1695   *                                                         $show_in_menu must be true. Default null (at the bottom).
1696   *     @type string       $menu_icon                       The URL to the icon to be used for this menu. Pass a base64-encoded
1697   *                                                         SVG using a data URI, which will be colored to match the color scheme
1698   *                                                         -- this should begin with 'data:image/svg+xml;base64,'. Pass the name
1699   *                                                         of a Dashicons helper class to use a font icon, e.g.
1700   *                                                        'dashicons-chart-pie'. Pass 'none' to leave div.wp-menu-image empty
1701   *                                                         so an icon can be added via CSS. Defaults to use the posts icon.
1702   *     @type string|array $capability_type                 The string to use to build the read, edit, and delete capabilities.
1703   *                                                         May be passed as an array to allow for alternative plurals when using
1704   *                                                         this argument as a base to construct the capabilities, e.g.
1705   *                                                         array('story', 'stories'). Default 'post'.
1706   *     @type string[]     $capabilities                    Array of capabilities for this post type. $capability_type is used
1707   *                                                         as a base to construct capabilities by default.
1708   *                                                         See get_post_type_capabilities().
1709   *     @type bool         $map_meta_cap                    Whether to use the internal default meta capability handling.
1710   *                                                         Default false.
1711   *     @type array|false  $supports                        Core feature(s) the post type supports. Serves as an alias for calling
1712   *                                                         add_post_type_support() directly. Core features include 'title',
1713   *                                                         'editor', 'comments', 'revisions', 'trackbacks', 'author', 'excerpt',
1714   *                                                         'page-attributes', 'thumbnail', 'custom-fields', and 'post-formats'.
1715   *                                                         Additionally, the 'revisions' feature dictates whether the post type
1716   *                                                         will store revisions, and the 'comments' feature dictates whether the
1717   *                                                         comments count will show on the edit screen. A feature can also be
1718   *                                                         specified as an array of arguments to provide additional information
1719   *                                                         about supporting that feature.
1720   *                                                         Example: `array( 'my_feature', array( 'field' => 'value' ) )`.
1721   *                                                         If false, no features will be added.
1722   *                                                         Default is an array containing 'title' and 'editor'.
1723   *     @type callable     $register_meta_box_cb            Provide a callback function that sets up the meta boxes for the
1724   *                                                         edit form. Do remove_meta_box() and add_meta_box() calls in the
1725   *                                                         callback. Default null.
1726   *     @type string[]     $taxonomies                      An array of taxonomy identifiers that will be registered for the
1727   *                                                         post type. Taxonomies can be registered later with register_taxonomy()
1728   *                                                         or register_taxonomy_for_object_type().
1729   *                                                         Default empty array.
1730   *     @type bool|string  $has_archive                     Whether there should be post type archives, or if a string, the
1731   *                                                         archive slug to use. Will generate the proper rewrite rules if
1732   *                                                         $rewrite is enabled. Default false.
1733   *     @type bool|array   $rewrite                         {
1734   *         Triggers the handling of rewrites for this post type. To prevent rewrite, set to false.
1735   *         Defaults to true, using $post_type as slug. To specify rewrite rules, an array can be
1736   *         passed with any of these keys:
1737   *
1738   *         @type string $slug       Customize the permastruct slug. Defaults to $post_type key.
1739   *         @type bool   $with_front Whether the permastruct should be prepended with WP_Rewrite::$front.
1740   *                                  Default true.
1741   *         @type bool   $feeds      Whether the feed permastruct should be built for this post type.
1742   *                                  Default is value of $has_archive.
1743   *         @type bool   $pages      Whether the permastruct should provide for pagination. Default true.
1744   *         @type int    $ep_mask    Endpoint mask to assign. If not specified and permalink_epmask is set,
1745   *                                  inherits from $permalink_epmask. If not specified and permalink_epmask
1746   *                                  is not set, defaults to EP_PERMALINK.
1747   *     }
1748   *     @type string|bool  $query_var                      Sets the query_var key for this post type. Defaults to $post_type
1749   *                                                        key. If false, a post type cannot be loaded at
1750   *                                                        ?{query_var}={post_slug}. If specified as a string, the query
1751   *                                                        ?{query_var_string}={post_slug} will be valid.
1752   *     @type bool         $can_export                     Whether to allow this post type to be exported. Default true.
1753   *     @type bool         $delete_with_user               Whether to delete posts of this type when deleting a user.
1754   *                                                          * If true, posts of this type belonging to the user will be moved
1755   *                                                            to Trash when the user is deleted.
1756   *                                                          * If false, posts of this type belonging to the user will *not*
1757   *                                                            be trashed or deleted.
1758   *                                                          * If not set (the default), posts are trashed if post type supports
1759   *                                                            the 'author' feature. Otherwise posts are not trashed or deleted.
1760   *                                                        Default null.
1761   *     @type array        $template                       Array of blocks to use as the default initial state for an editor
1762   *                                                        session. Each item should be an array containing block name and
1763   *                                                        optional attributes. Default empty array.
1764   *     @type string|false $template_lock                  Whether the block template should be locked if $template is set.
1765   *                                                        * If set to 'all', the user is unable to insert new blocks,
1766   *                                                          move existing blocks and delete blocks.
1767   *                                                       * If set to 'insert', the user is able to move existing blocks
1768   *                                                         but is unable to insert new blocks and delete blocks.
1769   *                                                         Default false.
1770   *     @type bool         $_builtin                     FOR INTERNAL USE ONLY! True if this post type is a native or
1771   *                                                      "built-in" post_type. Default false.
1772   *     @type string       $_edit_link                   FOR INTERNAL USE ONLY! URL segment to use for edit link of
1773   *                                                      this post type. Default 'post.php?post=%d'.
1774   * }
1775   * @return WP_Post_Type|WP_Error The registered post type object on success,
1776   *                               WP_Error object on failure.
1777   */
1778  function register_post_type( $post_type, $args = array() ) {
1779      global $wp_post_types;
1780  
1781      if ( ! is_array( $wp_post_types ) ) {
1782          $wp_post_types = array();
1783      }
1784  
1785      // Sanitize post type name.
1786      $post_type = sanitize_key( $post_type );
1787  
1788      if ( empty( $post_type ) || strlen( $post_type ) > 20 ) {
1789          _doing_it_wrong( __FUNCTION__, __( 'Post type names must be between 1 and 20 characters in length.' ), '4.2.0' );
1790          return new WP_Error( 'post_type_length_invalid', __( 'Post type names must be between 1 and 20 characters in length.' ) );
1791      }
1792  
1793      $post_type_object = new WP_Post_Type( $post_type, $args );
1794      $post_type_object->add_supports();
1795      $post_type_object->add_rewrite_rules();
1796      $post_type_object->register_meta_boxes();
1797  
1798      $wp_post_types[ $post_type ] = $post_type_object;
1799  
1800      $post_type_object->add_hooks();
1801      $post_type_object->register_taxonomies();
1802  
1803      /**
1804       * Fires after a post type is registered.
1805       *
1806       * @since 3.3.0
1807       * @since 4.6.0 Converted the `$post_type` parameter to accept a `WP_Post_Type` object.
1808       *
1809       * @param string       $post_type        Post type.
1810       * @param WP_Post_Type $post_type_object Arguments used to register the post type.
1811       */
1812      do_action( 'registered_post_type', $post_type, $post_type_object );
1813  
1814      /**
1815       * Fires after a specific post type is registered.
1816       *
1817       * The dynamic portion of the filter name, `$post_type`, refers to the post type key.
1818       *
1819       * Possible hook names include:
1820       *
1821       *  - `registered_post_type_post`
1822       *  - `registered_post_type_page`
1823       *
1824       * @since 6.0.0
1825       *
1826       * @param string       $post_type        Post type.
1827       * @param WP_Post_Type $post_type_object Arguments used to register the post type.
1828       */
1829      do_action( "registered_post_type_{$post_type}", $post_type, $post_type_object );
1830  
1831      return $post_type_object;
1832  }
1833  
1834  /**
1835   * Unregisters a post type.
1836   *
1837   * Cannot be used to unregister built-in post types.
1838   *
1839   * @since 4.5.0
1840   *
1841   * @global array $wp_post_types List of post types.
1842   *
1843   * @param string $post_type Post type to unregister.
1844   * @return true|WP_Error True on success, WP_Error on failure or if the post type doesn't exist.
1845   */
1846  function unregister_post_type( $post_type ) {
1847      global $wp_post_types;
1848  
1849      if ( ! post_type_exists( $post_type ) ) {
1850          return new WP_Error( 'invalid_post_type', __( 'Invalid post type.' ) );
1851      }
1852  
1853      $post_type_object = get_post_type_object( $post_type );
1854  
1855      // Do not allow unregistering internal post types.
1856      if ( $post_type_object->_builtin ) {
1857          return new WP_Error( 'invalid_post_type', __( 'Unregistering a built-in post type is not allowed' ) );
1858      }
1859  
1860      $post_type_object->remove_supports();
1861      $post_type_object->remove_rewrite_rules();
1862      $post_type_object->unregister_meta_boxes();
1863      $post_type_object->remove_hooks();
1864      $post_type_object->unregister_taxonomies();
1865  
1866      unset( $wp_post_types[ $post_type ] );
1867  
1868      /**
1869       * Fires after a post type was unregistered.
1870       *
1871       * @since 4.5.0
1872       *
1873       * @param string $post_type Post type key.
1874       */
1875      do_action( 'unregistered_post_type', $post_type );
1876  
1877      return true;
1878  }
1879  
1880  /**
1881   * Builds an object with all post type capabilities out of a post type object
1882   *
1883   * Post type capabilities use the 'capability_type' argument as a base, if the
1884   * capability is not set in the 'capabilities' argument array or if the
1885   * 'capabilities' argument is not supplied.
1886   *
1887   * The capability_type argument can optionally be registered as an array, with
1888   * the first value being singular and the second plural, e.g. array('story, 'stories')
1889   * Otherwise, an 's' will be added to the value for the plural form. After
1890   * registration, capability_type will always be a string of the singular value.
1891   *
1892   * By default, eight keys are accepted as part of the capabilities array:
1893   *
1894   * - edit_post, read_post, and delete_post are meta capabilities, which are then
1895   *   generally mapped to corresponding primitive capabilities depending on the
1896   *   context, which would be the post being edited/read/deleted and the user or
1897   *   role being checked. Thus these capabilities would generally not be granted
1898   *   directly to users or roles.
1899   *
1900   * - edit_posts - Controls whether objects of this post type can be edited.
1901   * - edit_others_posts - Controls whether objects of this type owned by other users
1902   *   can be edited. If the post type does not support an author, then this will
1903   *   behave like edit_posts.
1904   * - delete_posts - Controls whether objects of this post type can be deleted.
1905   * - publish_posts - Controls publishing objects of this post type.
1906   * - read_private_posts - Controls whether private objects can be read.
1907   *
1908   * These five primitive capabilities are checked in core in various locations.
1909   * There are also six other primitive capabilities which are not referenced
1910   * directly in core, except in map_meta_cap(), which takes the three aforementioned
1911   * meta capabilities and translates them into one or more primitive capabilities
1912   * that must then be checked against the user or role, depending on the context.
1913   *
1914   * - read - Controls whether objects of this post type can be read.
1915   * - delete_private_posts - Controls whether private objects can be deleted.
1916   * - delete_published_posts - Controls whether published objects can be deleted.
1917   * - delete_others_posts - Controls whether objects owned by other users can be
1918   *   can be deleted. If the post type does not support an author, then this will
1919   *   behave like delete_posts.
1920   * - edit_private_posts - Controls whether private objects can be edited.
1921   * - edit_published_posts - Controls whether published objects can be edited.
1922   *
1923   * These additional capabilities are only used in map_meta_cap(). Thus, they are
1924   * only assigned by default if the post type is registered with the 'map_meta_cap'
1925   * argument set to true (default is false).
1926   *
1927   * @since 3.0.0
1928   * @since 5.4.0 'delete_posts' is included in default capabilities.
1929   *
1930   * @see register_post_type()
1931   * @see map_meta_cap()
1932   *
1933   * @param object $args Post type registration arguments.
1934   * @return object Object with all the capabilities as member variables.
1935   */
1936  function get_post_type_capabilities( $args ) {
1937      if ( ! is_array( $args->capability_type ) ) {
1938          $args->capability_type = array( $args->capability_type, $args->capability_type . 's' );
1939      }
1940  
1941      // Singular base for meta capabilities, plural base for primitive capabilities.
1942      list( $singular_base, $plural_base ) = $args->capability_type;
1943  
1944      $default_capabilities = array(
1945          // Meta capabilities.
1946          'edit_post'          => 'edit_' . $singular_base,
1947          'read_post'          => 'read_' . $singular_base,
1948          'delete_post'        => 'delete_' . $singular_base,
1949          // Primitive capabilities used outside of map_meta_cap():
1950          'edit_posts'         => 'edit_' . $plural_base,
1951          'edit_others_posts'  => 'edit_others_' . $plural_base,
1952          'delete_posts'       => 'delete_' . $plural_base,
1953          'publish_posts'      => 'publish_' . $plural_base,
1954          'read_private_posts' => 'read_private_' . $plural_base,
1955      );
1956  
1957      // Primitive capabilities used within map_meta_cap():
1958      if ( $args->map_meta_cap ) {
1959          $default_capabilities_for_mapping = array(
1960              'read'                   => 'read',
1961              'delete_private_posts'   => 'delete_private_' . $plural_base,
1962              'delete_published_posts' => 'delete_published_' . $plural_base,
1963              'delete_others_posts'    => 'delete_others_' . $plural_base,
1964              'edit_private_posts'     => 'edit_private_' . $plural_base,
1965              'edit_published_posts'   => 'edit_published_' . $plural_base,
1966          );
1967          $default_capabilities             = array_merge( $default_capabilities, $default_capabilities_for_mapping );
1968      }
1969  
1970      $capabilities = array_merge( $default_capabilities, $args->capabilities );
1971  
1972      // Post creation capability simply maps to edit_posts by default:
1973      if ( ! isset( $capabilities['create_posts'] ) ) {
1974          $capabilities['create_posts'] = $capabilities['edit_posts'];
1975      }
1976  
1977      // Remember meta capabilities for future reference.
1978      if ( $args->map_meta_cap ) {
1979          _post_type_meta_capabilities( $capabilities );
1980      }
1981  
1982      return (object) $capabilities;
1983  }
1984  
1985  /**
1986   * Stores or returns a list of post type meta caps for map_meta_cap().
1987   *
1988   * @since 3.1.0
1989   * @access private
1990   *
1991   * @global array $post_type_meta_caps Used to store meta capabilities.
1992   *
1993   * @param string[] $capabilities Post type meta capabilities.
1994   */
1995  function _post_type_meta_capabilities( $capabilities = null ) {
1996      global $post_type_meta_caps;
1997  
1998      foreach ( $capabilities as $core => $custom ) {
1999          if ( in_array( $core, array( 'read_post', 'delete_post', 'edit_post' ), true ) ) {
2000              $post_type_meta_caps[ $custom ] = $core;
2001          }
2002      }
2003  }
2004  
2005  /**
2006   * Builds an object with all post type labels out of a post type object.
2007   *
2008   * Accepted keys of the label array in the post type object:
2009   *
2010   * - `name` - General name for the post type, usually plural. The same and overridden
2011   *          by `$post_type_object->label`. Default is 'Posts' / 'Pages'.
2012   * - `singular_name` - Name for one object of this post type. Default is 'Post' / 'Page'.
2013   * - `add_new` - Label for adding a new item. Default is 'Add New Post' / 'Add New Page'.
2014   * - `add_new_item` - Label for adding a new singular item. Default is 'Add New Post' / 'Add New Page'.
2015   * - `edit_item` - Label for editing a singular item. Default is 'Edit Post' / 'Edit Page'.
2016   * - `new_item` - Label for the new item page title. Default is 'New Post' / 'New Page'.
2017   * - `view_item` - Label for viewing a singular item. Default is 'View Post' / 'View Page'.
2018   * - `view_items` - Label for viewing post type archives. Default is 'View Posts' / 'View Pages'.
2019   * - `search_items` - Label for searching plural items. Default is 'Search Posts' / 'Search Pages'.
2020   * - `not_found` - Label used when no items are found. Default is 'No posts found' / 'No pages found'.
2021   * - `not_found_in_trash` - Label used when no items are in the Trash. Default is 'No posts found in Trash' /
2022   *                        'No pages found in Trash'.
2023   * - `parent_item_colon` - Label used to prefix parents of hierarchical items. Not used on non-hierarchical
2024   *                       post types. Default is 'Parent Page:'.
2025   * - `all_items` - Label to signify all items in a submenu link. Default is 'All Posts' / 'All Pages'.
2026   * - `archives` - Label for archives in nav menus. Default is 'Post Archives' / 'Page Archives'.
2027   * - `attributes` - Label for the attributes meta box. Default is 'Post Attributes' / 'Page Attributes'.
2028   * - `insert_into_item` - Label for the media frame button. Default is 'Insert into post' / 'Insert into page'.
2029   * - `uploaded_to_this_item` - Label for the media frame filter. Default is 'Uploaded to this post' /
2030   *                           'Uploaded to this page'.
2031   * - `featured_image` - Label for the featured image meta box title. Default is 'Featured image'.
2032   * - `set_featured_image` - Label for setting the featured image. Default is 'Set featured image'.
2033   * - `remove_featured_image` - Label for removing the featured image. Default is 'Remove featured image'.
2034   * - `use_featured_image` - Label in the media frame for using a featured image. Default is 'Use as featured image'.
2035   * - `menu_name` - Label for the menu name. Default is the same as `name`.
2036   * - `filter_items_list` - Label for the table views hidden heading. Default is 'Filter posts list' /
2037   *                       'Filter pages list'.
2038   * - `filter_by_date` - Label for the date filter in list tables. Default is 'Filter by date'.
2039   * - `items_list_navigation` - Label for the table pagination hidden heading. Default is 'Posts list navigation' /
2040   *                           'Pages list navigation'.
2041   * - `items_list` - Label for the table hidden heading. Default is 'Posts list' / 'Pages list'.
2042   * - `item_published` - Label used when an item is published. Default is 'Post published.' / 'Page published.'
2043   * - `item_published_privately` - Label used when an item is published with private visibility.
2044   *                              Default is 'Post published privately.' / 'Page published privately.'
2045   * - `item_reverted_to_draft` - Label used when an item is switched to a draft.
2046   *                            Default is 'Post reverted to draft.' / 'Page reverted to draft.'
2047   * - `item_trashed` - Label used when an item is moved to Trash. Default is 'Post trashed.' / 'Page trashed.'
2048   * - `item_scheduled` - Label used when an item is scheduled for publishing. Default is 'Post scheduled.' /
2049   *                    'Page scheduled.'
2050   * - `item_updated` - Label used when an item is updated. Default is 'Post updated.' / 'Page updated.'
2051   * - `item_link` - Title for a navigation link block variation. Default is 'Post Link' / 'Page Link'.
2052   * - `item_link_description` - Description for a navigation link block variation. Default is 'A link to a post.' /
2053   *                             'A link to a page.'
2054   *
2055   * Above, the first default value is for non-hierarchical post types (like posts)
2056   * and the second one is for hierarchical post types (like pages).
2057   *
2058   * Note: To set labels used in post type admin notices, see the {@see 'post_updated_messages'} filter.
2059   *
2060   * @since 3.0.0
2061   * @since 4.3.0 Added the `featured_image`, `set_featured_image`, `remove_featured_image`,
2062   *              and `use_featured_image` labels.
2063   * @since 4.4.0 Added the `archives`, `insert_into_item`, `uploaded_to_this_item`, `filter_items_list`,
2064   *              `items_list_navigation`, and `items_list` labels.
2065   * @since 4.6.0 Converted the `$post_type` parameter to accept a `WP_Post_Type` object.
2066   * @since 4.7.0 Added the `view_items` and `attributes` labels.
2067   * @since 5.0.0 Added the `item_published`, `item_published_privately`, `item_reverted_to_draft`,
2068   *              `item_scheduled`, and `item_updated` labels.
2069   * @since 5.7.0 Added the `filter_by_date` label.
2070   * @since 5.8.0 Added the `item_link` and `item_link_description` labels.
2071   * @since 6.3.0 Added the `item_trashed` label.
2072   * @since 6.4.0 Changed default values for the `add_new` label to include the type of content.
2073   *              This matches `add_new_item` and provides more context for better accessibility.
2074   *
2075   * @access private
2076   *
2077   * @param object|WP_Post_Type $post_type_object Post type object.
2078   * @return object Object with all the labels as member variables.
2079   */
2080  function get_post_type_labels( $post_type_object ) {
2081      $nohier_vs_hier_defaults = WP_Post_Type::get_default_labels();
2082  
2083      $nohier_vs_hier_defaults['menu_name'] = $nohier_vs_hier_defaults['name'];
2084  
2085      $labels = _get_custom_object_labels( $post_type_object, $nohier_vs_hier_defaults );
2086  
2087      $post_type = $post_type_object->name;
2088  
2089      $default_labels = clone $labels;
2090  
2091      /**
2092       * Filters the labels of a specific post type.
2093       *
2094       * The dynamic portion of the hook name, `$post_type`, refers to
2095       * the post type slug.
2096       *
2097       * Possible hook names include:
2098       *
2099       *  - `post_type_labels_post`
2100       *  - `post_type_labels_page`
2101       *  - `post_type_labels_attachment`
2102       *
2103       * @since 3.5.0
2104       *
2105       * @see get_post_type_labels() for the full list of labels.
2106       *
2107       * @param object $labels Object with labels for the post type as member variables.
2108       */
2109      $labels = apply_filters( "post_type_labels_{$post_type}", $labels );
2110  
2111      // Ensure that the filtered labels contain all required default values.
2112      $labels = (object) array_merge( (array) $default_labels, (array) $labels );
2113  
2114      return $labels;
2115  }
2116  
2117  /**
2118   * Builds an object with custom-something object (post type, taxonomy) labels
2119   * out of a custom-something object
2120   *
2121   * @since 3.0.0
2122   * @access private
2123   *
2124   * @param object $data_object             A custom-something object.
2125   * @param array  $nohier_vs_hier_defaults Hierarchical vs non-hierarchical default labels.
2126   * @return object Object containing labels for the given custom-something object.
2127   */
2128  function _get_custom_object_labels( $data_object, $nohier_vs_hier_defaults ) {
2129      $data_object->labels = (array) $data_object->labels;
2130  
2131      if ( isset( $data_object->label ) && empty( $data_object->labels['name'] ) ) {
2132          $data_object->labels['name'] = $data_object->label;
2133      }
2134  
2135      if ( ! isset( $data_object->labels['singular_name'] ) && isset( $data_object->labels['name'] ) ) {
2136          $data_object->labels['singular_name'] = $data_object->labels['name'];
2137      }
2138  
2139      if ( ! isset( $data_object->labels['name_admin_bar'] ) ) {
2140          $data_object->labels['name_admin_bar'] =
2141              isset( $data_object->labels['singular_name'] )
2142              ? $data_object->labels['singular_name']
2143              : $data_object->name;
2144      }
2145  
2146      if ( ! isset( $data_object->labels['menu_name'] ) && isset( $data_object->labels['name'] ) ) {
2147          $data_object->labels['menu_name'] = $data_object->labels['name'];
2148      }
2149  
2150      if ( ! isset( $data_object->labels['all_items'] ) && isset( $data_object->labels['menu_name'] ) ) {
2151          $data_object->labels['all_items'] = $data_object->labels['menu_name'];
2152      }
2153  
2154      if ( ! isset( $data_object->labels['archives'] ) && isset( $data_object->labels['all_items'] ) ) {
2155          $data_object->labels['archives'] = $data_object->labels['all_items'];
2156      }
2157  
2158      $defaults = array();
2159      foreach ( $nohier_vs_hier_defaults as $key => $value ) {
2160          $defaults[ $key ] = $data_object->hierarchical ? $value[1] : $value[0];
2161      }
2162  
2163      $labels              = array_merge( $defaults, $data_object->labels );
2164      $data_object->labels = (object) $data_object->labels;
2165  
2166      return (object) $labels;
2167  }
2168  
2169  /**
2170   * Adds submenus for post types.
2171   *
2172   * @access private
2173   * @since 3.1.0
2174   */
2175  function _add_post_type_submenus() {
2176      foreach ( get_post_types( array( 'show_ui' => true ) ) as $ptype ) {
2177          $ptype_obj = get_post_type_object( $ptype );
2178          // Sub-menus only.
2179          if ( ! $ptype_obj->show_in_menu || true === $ptype_obj->show_in_menu ) {
2180              continue;
2181          }
2182          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" );
2183      }
2184  }
2185  
2186  /**
2187   * Registers support of certain features for a post type.
2188   *
2189   * All core features are directly associated with a functional area of the edit
2190   * screen, such as the editor or a meta box. Features include: 'title', 'editor',
2191   * 'comments', 'revisions', 'trackbacks', 'author', 'excerpt', 'page-attributes',
2192   * 'thumbnail', 'custom-fields', and 'post-formats'.
2193   *
2194   * Additionally, the 'revisions' feature dictates whether the post type will
2195   * store revisions, and the 'comments' feature dictates whether the comments
2196   * count will show on the edit screen.
2197   *
2198   * A third, optional parameter can also be passed along with a feature to provide
2199   * additional information about supporting that feature.
2200   *
2201   * Example usage:
2202   *
2203   *     add_post_type_support( 'my_post_type', 'comments' );
2204   *     add_post_type_support( 'my_post_type', array(
2205   *         'author', 'excerpt',
2206   *     ) );
2207   *     add_post_type_support( 'my_post_type', 'my_feature', array(
2208   *         'field' => 'value',
2209   *     ) );
2210   *
2211   * @since 3.0.0
2212   * @since 5.3.0 Formalized the existing and already documented `...$args` parameter
2213   *              by adding it to the function signature.
2214   *
2215   * @global array $_wp_post_type_features
2216   *
2217   * @param string       $post_type The post type for which to add the feature.
2218   * @param string|array $feature   The feature being added, accepts an array of
2219   *                                feature strings or a single string.
2220   * @param mixed        ...$args   Optional extra arguments to pass along with certain features.
2221   */
2222  function add_post_type_support( $post_type, $feature, ...$args ) {
2223      global $_wp_post_type_features;
2224  
2225      $features = (array) $feature;
2226      foreach ( $features as $feature ) {
2227          if ( $args ) {
2228              $_wp_post_type_features[ $post_type ][ $feature ] = $args;
2229          } else {
2230              $_wp_post_type_features[ $post_type ][ $feature ] = true;
2231          }
2232      }
2233  }
2234  
2235  /**
2236   * Removes support for a feature from a post type.
2237   *
2238   * @since 3.0.0
2239   *
2240   * @global array $_wp_post_type_features
2241   *
2242   * @param string $post_type The post type for which to remove the feature.
2243   * @param string $feature   The feature being removed.
2244   */
2245  function remove_post_type_support( $post_type, $feature ) {
2246      global $_wp_post_type_features;
2247  
2248      unset( $_wp_post_type_features[ $post_type ][ $feature ] );
2249  }
2250  
2251  /**
2252   * Gets all the post type features
2253   *
2254   * @since 3.4.0
2255   *
2256   * @global array $_wp_post_type_features
2257   *
2258   * @param string $post_type The post type.
2259   * @return array Post type supports list.
2260   */
2261  function get_all_post_type_supports( $post_type ) {
2262      global $_wp_post_type_features;
2263  
2264      if ( isset( $_wp_post_type_features[ $post_type ] ) ) {
2265          return $_wp_post_type_features[ $post_type ];
2266      }
2267  
2268      return array();
2269  }
2270  
2271  /**
2272   * Checks a post type's support for a given feature.
2273   *
2274   * @since 3.0.0
2275   *
2276   * @global array $_wp_post_type_features
2277   *
2278   * @param string $post_type The post type being checked.
2279   * @param string $feature   The feature being checked.
2280   * @return bool Whether the post type supports the given feature.
2281   */
2282  function post_type_supports( $post_type, $feature ) {
2283      global $_wp_post_type_features;
2284  
2285      return ( isset( $_wp_post_type_features[ $post_type ][ $feature ] ) );
2286  }
2287  
2288  /**
2289   * Retrieves a list of post type names that support a specific feature.
2290   *
2291   * @since 4.5.0
2292   *
2293   * @global array $_wp_post_type_features Post type features
2294   *
2295   * @param array|string $feature  Single feature or an array of features the post types should support.
2296   * @param string       $operator Optional. The logical operation to perform. 'or' means
2297   *                               only one element from the array needs to match; 'and'
2298   *                               means all elements must match; 'not' means no elements may
2299   *                               match. Default 'and'.
2300   * @return string[] A list of post type names.
2301   */
2302  function get_post_types_by_support( $feature, $operator = 'and' ) {
2303      global $_wp_post_type_features;
2304  
2305      $features = array_fill_keys( (array) $feature, true );
2306  
2307      return array_keys( wp_filter_object_list( $_wp_post_type_features, $features, $operator ) );
2308  }
2309  
2310  /**
2311   * Updates the post type for the post ID.
2312   *
2313   * The page or post cache will be cleaned for the post ID.
2314   *
2315   * @since 2.5.0
2316   *
2317   * @global wpdb $wpdb WordPress database abstraction object.
2318   *
2319   * @param int    $post_id   Optional. Post ID to change post type. Default 0.
2320   * @param string $post_type Optional. Post type. Accepts 'post' or 'page' to
2321   *                          name a few. Default 'post'.
2322   * @return int|false Amount of rows changed. Should be 1 for success and 0 for failure.
2323   */
2324  function set_post_type( $post_id = 0, $post_type = 'post' ) {
2325      global $wpdb;
2326  
2327      $post_type = sanitize_post_field( 'post_type', $post_type, $post_id, 'db' );
2328      $return    = $wpdb->update( $wpdb->posts, array( 'post_type' => $post_type ), array( 'ID' => $post_id ) );
2329  
2330      clean_post_cache( $post_id );
2331  
2332      return $return;
2333  }
2334  
2335  /**
2336   * Determines whether a post type is considered "viewable".
2337   *
2338   * For built-in post types such as posts and pages, the 'public' value will be evaluated.
2339   * For all others, the 'publicly_queryable' value will be used.
2340   *
2341   * @since 4.4.0
2342   * @since 4.5.0 Added the ability to pass a post type name in addition to object.
2343   * @since 4.6.0 Converted the `$post_type` parameter to accept a `WP_Post_Type` object.
2344   * @since 5.9.0 Added `is_post_type_viewable` hook to filter the result.
2345   *
2346   * @param string|WP_Post_Type $post_type Post type name or object.
2347   * @return bool Whether the post type should be considered viewable.
2348   */
2349  function is_post_type_viewable( $post_type ) {
2350      if ( is_scalar( $post_type ) ) {
2351          $post_type = get_post_type_object( $post_type );
2352  
2353          if ( ! $post_type ) {
2354              return false;
2355          }
2356      }
2357  
2358      if ( ! is_object( $post_type ) ) {
2359          return false;
2360      }
2361  
2362      $is_viewable = $post_type->publicly_queryable || ( $post_type->_builtin && $post_type->public );
2363  
2364      /**
2365       * Filters whether a post type is considered "viewable".
2366       *
2367       * The returned filtered value must be a boolean type to ensure
2368       * `is_post_type_viewable()` only returns a boolean. This strictness
2369       * is by design to maintain backwards-compatibility and guard against
2370       * potential type errors in PHP 8.1+. Non-boolean values (even falsey
2371       * and truthy values) will result in the function returning false.
2372       *
2373       * @since 5.9.0
2374       *
2375       * @param bool         $is_viewable Whether the post type is "viewable" (strict type).
2376       * @param WP_Post_Type $post_type   Post type object.
2377       */
2378      return true === apply_filters( 'is_post_type_viewable', $is_viewable, $post_type );
2379  }
2380  
2381  /**
2382   * Determines whether a post status is considered "viewable".
2383   *
2384   * For built-in post statuses such as publish and private, the 'public' value will be evaluated.
2385   * For all others, the 'publicly_queryable' value will be used.
2386   *
2387   * @since 5.7.0
2388   * @since 5.9.0 Added `is_post_status_viewable` hook to filter the result.
2389   *
2390   * @param string|stdClass $post_status Post status name or object.
2391   * @return bool Whether the post status should be considered viewable.
2392   */
2393  function is_post_status_viewable( $post_status ) {
2394      if ( is_scalar( $post_status ) ) {
2395          $post_status = get_post_status_object( $post_status );
2396  
2397          if ( ! $post_status ) {
2398              return false;
2399          }
2400      }
2401  
2402      if (
2403          ! is_object( $post_status ) ||
2404          $post_status->internal ||
2405          $post_status->protected
2406      ) {
2407          return false;
2408      }
2409  
2410      $is_viewable = $post_status->publicly_queryable || ( $post_status->_builtin && $post_status->public );
2411  
2412      /**
2413       * Filters whether a post status is considered "viewable".
2414       *
2415       * The returned filtered value must be a boolean type to ensure
2416       * `is_post_status_viewable()` only returns a boolean. This strictness
2417       * is by design to maintain backwards-compatibility and guard against
2418       * potential type errors in PHP 8.1+. Non-boolean values (even falsey
2419       * and truthy values) will result in the function returning false.
2420       *
2421       * @since 5.9.0
2422       *
2423       * @param bool     $is_viewable Whether the post status is "viewable" (strict type).
2424       * @param stdClass $post_status Post status object.
2425       */
2426      return true === apply_filters( 'is_post_status_viewable', $is_viewable, $post_status );
2427  }
2428  
2429  /**
2430   * Determines whether a post is publicly viewable.
2431   *
2432   * Posts are considered publicly viewable if both the post status and post type
2433   * are viewable.
2434   *
2435   * @since 5.7.0
2436   *
2437   * @param int|WP_Post|null $post Optional. Post ID or post object. Defaults to global $post.
2438   * @return bool Whether the post is publicly viewable.
2439   */
2440  function is_post_publicly_viewable( $post = null ) {
2441      $post = get_post( $post );
2442  
2443      if ( ! $post ) {
2444          return false;
2445      }
2446  
2447      $post_type   = get_post_type( $post );
2448      $post_status = get_post_status( $post );
2449  
2450      return is_post_type_viewable( $post_type ) && is_post_status_viewable( $post_status );
2451  }
2452  
2453  /**
2454   * Retrieves an array of the latest posts, or posts matching the given criteria.
2455   *
2456   * For more information on the accepted arguments, see the
2457   * {@link https://developer.wordpress.org/reference/classes/wp_query/
2458   * WP_Query} documentation in the Developer Handbook.
2459   *
2460   * The `$ignore_sticky_posts` and `$no_found_rows` arguments are ignored by
2461   * this function and both are set to `true`.
2462   *
2463   * The defaults are as follows:
2464   *
2465   * @since 1.2.0
2466   *
2467   * @see WP_Query
2468   * @see WP_Query::parse_query()
2469   *
2470   * @param array $args {
2471   *     Optional. Arguments to retrieve posts. See WP_Query::parse_query() for all available arguments.
2472   *
2473   *     @type int        $numberposts      Total number of posts to retrieve. Is an alias of `$posts_per_page`
2474   *                                        in WP_Query. Accepts -1 for all. Default 5.
2475   *     @type int|string $category         Category ID or comma-separated list of IDs (this or any children).
2476   *                                        Is an alias of `$cat` in WP_Query. Default 0.
2477   *     @type int[]      $include          An array of post IDs to retrieve, sticky posts will be included.
2478   *                                        Is an alias of `$post__in` in WP_Query. Default empty array.
2479   *     @type int[]      $exclude          An array of post IDs not to retrieve. Default empty array.
2480   *     @type bool       $suppress_filters Whether to suppress filters. Default true.
2481   * }
2482   * @return WP_Post[]|int[] Array of post objects or post IDs.
2483   */
2484  function get_posts( $args = null ) {
2485      $defaults = array(
2486          'numberposts'      => 5,
2487          'category'         => 0,
2488          'orderby'          => 'date',
2489          'order'            => 'DESC',
2490          'include'          => array(),
2491          'exclude'          => array(),
2492          'meta_key'         => '',
2493          'meta_value'       => '',
2494          'post_type'        => 'post',
2495          'suppress_filters' => true,
2496      );
2497  
2498      $parsed_args = wp_parse_args( $args, $defaults );
2499      if ( empty( $parsed_args['post_status'] ) ) {
2500          $parsed_args['post_status'] = ( 'attachment' === $parsed_args['post_type'] ) ? 'inherit' : 'publish';
2501      }
2502      if ( ! empty( $parsed_args['numberposts'] ) && empty( $parsed_args['posts_per_page'] ) ) {
2503          $parsed_args['posts_per_page'] = $parsed_args['numberposts'];
2504      }
2505      if ( ! empty( $parsed_args['category'] ) ) {
2506          $parsed_args['cat'] = $parsed_args['category'];
2507      }
2508      if ( ! empty( $parsed_args['include'] ) ) {
2509          $incposts                      = wp_parse_id_list( $parsed_args['include'] );
2510          $parsed_args['posts_per_page'] = count( $incposts );  // Only the number of posts included.
2511          $parsed_args['post__in']       = $incposts;
2512      } elseif ( ! empty( $parsed_args['exclude'] ) ) {
2513          $parsed_args['post__not_in'] = wp_parse_id_list( $parsed_args['exclude'] );
2514      }
2515  
2516      $parsed_args['ignore_sticky_posts'] = true;
2517      $parsed_args['no_found_rows']       = true;
2518  
2519      $get_posts = new WP_Query();
2520      return $get_posts->query( $parsed_args );
2521  }
2522  
2523  //
2524  // Post meta functions.
2525  //
2526  
2527  /**
2528   * Adds a meta field to the given post.
2529   *
2530   * Post meta data is called "Custom Fields" on the Administration Screen.
2531   *
2532   * @since 1.5.0
2533   *
2534   * @param int    $post_id    Post ID.
2535   * @param string $meta_key   Metadata name.
2536   * @param mixed  $meta_value Metadata value. Must be serializable if non-scalar.
2537   * @param bool   $unique     Optional. Whether the same key should not be added.
2538   *                           Default false.
2539   * @return int|false Meta ID on success, false on failure.
2540   */
2541  function add_post_meta( $post_id, $meta_key, $meta_value, $unique = false ) {
2542      // Make sure meta is added to the post, not a revision.
2543      $the_post = wp_is_post_revision( $post_id );
2544      if ( $the_post ) {
2545          $post_id = $the_post;
2546      }
2547  
2548      return add_metadata( 'post', $post_id, $meta_key, $meta_value, $unique );
2549  }
2550  
2551  /**
2552   * Deletes a post meta field for the given post ID.
2553   *
2554   * You can match based on the key, or key and value. Removing based on key and
2555   * value, will keep from removing duplicate metadata with the same key. It also
2556   * allows removing all metadata matching the key, if needed.
2557   *
2558   * @since 1.5.0
2559   *
2560   * @param int    $post_id    Post ID.
2561   * @param string $meta_key   Metadata name.
2562   * @param mixed  $meta_value Optional. Metadata value. If provided,
2563   *                           rows will only be removed that match the value.
2564   *                           Must be serializable if non-scalar. Default empty.
2565   * @return bool True on success, false on failure.
2566   */
2567  function delete_post_meta( $post_id, $meta_key, $meta_value = '' ) {
2568      // Make sure meta is deleted from the post, not from a revision.
2569      $the_post = wp_is_post_revision( $post_id );
2570      if ( $the_post ) {
2571          $post_id = $the_post;
2572      }
2573  
2574      return delete_metadata( 'post', $post_id, $meta_key, $meta_value );
2575  }
2576  
2577  /**
2578   * Retrieves a post meta field for the given post ID.
2579   *
2580   * @since 1.5.0
2581   *
2582   * @param int    $post_id Post ID.
2583   * @param string $key     Optional. The meta key to retrieve. By default,
2584   *                        returns data for all keys. Default empty.
2585   * @param bool   $single  Optional. Whether to return a single value.
2586   *                        This parameter has no effect if `$key` is not specified.
2587   *                        Default false.
2588   * @return mixed An array of values if `$single` is false.
2589   *               The value of the meta field if `$single` is true.
2590   *               False for an invalid `$post_id` (non-numeric, zero, or negative value).
2591   *               An empty string if a valid but non-existing post ID is passed.
2592   */
2593  function get_post_meta( $post_id, $key = '', $single = false ) {
2594      return get_metadata( 'post', $post_id, $key, $single );
2595  }
2596  
2597  /**
2598   * Updates a post meta field based on the given post ID.
2599   *
2600   * Use the `$prev_value` parameter to differentiate between meta fields with the
2601   * same key and post ID.
2602   *
2603   * If the meta field for the post does not exist, it will be added and its ID returned.
2604   *
2605   * Can be used in place of add_post_meta().
2606   *
2607   * @since 1.5.0
2608   *
2609   * @param int    $post_id    Post ID.
2610   * @param string $meta_key   Metadata key.
2611   * @param mixed  $meta_value Metadata value. Must be serializable if non-scalar.
2612   * @param mixed  $prev_value Optional. Previous value to check before updating.
2613   *                           If specified, only update existing metadata entries with
2614   *                           this value. Otherwise, update all entries. Default empty.
2615   * @return int|bool Meta ID if the key didn't exist, true on successful update,
2616   *                  false on failure or if the value passed to the function
2617   *                  is the same as the one that is already in the database.
2618   */
2619  function update_post_meta( $post_id, $meta_key, $meta_value, $prev_value = '' ) {
2620      // Make sure meta is updated for the post, not for a revision.
2621      $the_post = wp_is_post_revision( $post_id );
2622      if ( $the_post ) {
2623          $post_id = $the_post;
2624      }
2625  
2626      return update_metadata( 'post', $post_id, $meta_key, $meta_value, $prev_value );
2627  }
2628  
2629  /**
2630   * Deletes everything from post meta matching the given meta key.
2631   *
2632   * @since 2.3.0
2633   *
2634   * @param string $post_meta_key Key to search for when deleting.
2635   * @return bool Whether the post meta key was deleted from the database.
2636   */
2637  function delete_post_meta_by_key( $post_meta_key ) {
2638      return delete_metadata( 'post', null, $post_meta_key, '', true );
2639  }
2640  
2641  /**
2642   * Registers a meta key for posts.
2643   *
2644   * @since 4.9.8
2645   *
2646   * @param string $post_type Post type to register a meta key for. Pass an empty string
2647   *                          to register the meta key across all existing post types.
2648   * @param string $meta_key  The meta key to register.
2649   * @param array  $args      Data used to describe the meta key when registered. See
2650   *                          {@see register_meta()} for a list of supported arguments.
2651   * @return bool True if the meta key was successfully registered, false if not.
2652   */
2653  function register_post_meta( $post_type, $meta_key, array $args ) {
2654      $args['object_subtype'] = $post_type;
2655  
2656      return register_meta( 'post', $meta_key, $args );
2657  }
2658  
2659  /**
2660   * Unregisters a meta key for posts.
2661   *
2662   * @since 4.9.8
2663   *
2664   * @param string $post_type Post type the meta key is currently registered for. Pass
2665   *                          an empty string if the meta key is registered across all
2666   *                          existing post types.
2667   * @param string $meta_key  The meta key to unregister.
2668   * @return bool True on success, false if the meta key was not previously registered.
2669   */
2670  function unregister_post_meta( $post_type, $meta_key ) {
2671      return unregister_meta_key( 'post', $meta_key, $post_type );
2672  }
2673  
2674  /**
2675   * Retrieves post meta fields, based on post ID.
2676   *
2677   * The post meta fields are retrieved from the cache where possible,
2678   * so the function is optimized to be called more than once.
2679   *
2680   * @since 1.2.0
2681   *
2682   * @param int $post_id Optional. Post ID. Default is the ID of the global `$post`.
2683   * @return mixed An array of values.
2684   *               False for an invalid `$post_id` (non-numeric, zero, or negative value).
2685   *               An empty string if a valid but non-existing post ID is passed.
2686   */
2687  function get_post_custom( $post_id = 0 ) {
2688      $post_id = absint( $post_id );
2689  
2690      if ( ! $post_id ) {
2691          $post_id = get_the_ID();
2692      }
2693  
2694      return get_post_meta( $post_id );
2695  }
2696  
2697  /**
2698   * Retrieves meta field names for a post.
2699   *
2700   * If there are no meta fields, then nothing (null) will be returned.
2701   *
2702   * @since 1.2.0
2703   *
2704   * @param int $post_id Optional. Post ID. Default is the ID of the global `$post`.
2705   * @return array|void Array of the keys, if retrieved.
2706   */
2707  function get_post_custom_keys( $post_id = 0 ) {
2708      $custom = get_post_custom( $post_id );
2709  
2710      if ( ! is_array( $custom ) ) {
2711          return;
2712      }
2713  
2714      $keys = array_keys( $custom );
2715      if ( $keys ) {
2716          return $keys;
2717      }
2718  }
2719  
2720  /**
2721   * Retrieves values for a custom post field.
2722   *
2723   * The parameters must not be considered optional. All of the post meta fields
2724   * will be retrieved and only the meta field key values returned.
2725   *
2726   * @since 1.2.0
2727   *
2728   * @param string $key     Optional. Meta field key. Default empty.
2729   * @param int    $post_id Optional. Post ID. Default is the ID of the global `$post`.
2730   * @return array|null Meta field values.
2731   */
2732  function get_post_custom_values( $key = '', $post_id = 0 ) {
2733      if ( ! $key ) {
2734          return null;
2735      }
2736  
2737      $custom = get_post_custom( $post_id );
2738  
2739      return isset( $custom[ $key ] ) ? $custom[ $key ] : null;
2740  }
2741  
2742  /**
2743   * Determines whether a post is sticky.
2744   *
2745   * Sticky posts should remain at the top of The Loop. If the post ID is not
2746   * given, then The Loop ID for the current post will be used.
2747   *
2748   * For more information on this and similar theme functions, check out
2749   * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
2750   * Conditional Tags} article in the Theme Developer Handbook.
2751   *
2752   * @since 2.7.0
2753   *
2754   * @param int $post_id Optional. Post ID. Default is the ID of the global `$post`.
2755   * @return bool Whether post is sticky.
2756   */
2757  function is_sticky( $post_id = 0 ) {
2758      $post_id = absint( $post_id );
2759  
2760      if ( ! $post_id ) {
2761          $post_id = get_the_ID();
2762      }
2763  
2764      $stickies = get_option( 'sticky_posts' );
2765  
2766      if ( is_array( $stickies ) ) {
2767          $stickies  = array_map( 'intval', $stickies );
2768          $is_sticky = in_array( $post_id, $stickies, true );
2769      } else {
2770          $is_sticky = false;
2771      }
2772  
2773      /**
2774       * Filters whether a post is sticky.
2775       *
2776       * @since 5.3.0
2777       *
2778       * @param bool $is_sticky Whether a post is sticky.
2779       * @param int  $post_id   Post ID.
2780       */
2781      return apply_filters( 'is_sticky', $is_sticky, $post_id );
2782  }
2783  
2784  /**
2785   * Sanitizes every post field.
2786   *
2787   * If the context is 'raw', then the post object or array will get minimal
2788   * sanitization of the integer fields.
2789   *
2790   * @since 2.3.0
2791   *
2792   * @see sanitize_post_field()
2793   *
2794   * @param object|WP_Post|array $post    The post object or array
2795   * @param string               $context Optional. How to sanitize post fields.
2796   *                                      Accepts 'raw', 'edit', 'db', 'display',
2797   *                                      'attribute', or 'js'. Default 'display'.
2798   * @return object|WP_Post|array The now sanitized post object or array (will be the
2799   *                              same type as `$post`).
2800   */
2801  function sanitize_post( $post, $context = 'display' ) {
2802      if ( is_object( $post ) ) {
2803          // Check if post already filtered for this context.
2804          if ( isset( $post->filter ) && $context == $post->filter ) {
2805              return $post;
2806          }
2807          if ( ! isset( $post->ID ) ) {
2808              $post->ID = 0;
2809          }
2810          foreach ( array_keys( get_object_vars( $post ) ) as $field ) {
2811              $post->$field = sanitize_post_field( $field, $post->$field, $post->ID, $context );
2812          }
2813          $post->filter = $context;
2814      } elseif ( is_array( $post ) ) {
2815          // Check if post already filtered for this context.
2816          if ( isset( $post['filter'] ) && $context == $post['filter'] ) {
2817              return $post;
2818          }
2819          if ( ! isset( $post['ID'] ) ) {
2820              $post['ID'] = 0;
2821          }
2822          foreach ( array_keys( $post ) as $field ) {
2823              $post[ $field ] = sanitize_post_field( $field, $post[ $field ], $post['ID'], $context );
2824          }
2825          $post['filter'] = $context;
2826      }
2827      return $post;
2828  }
2829  
2830  /**
2831   * Sanitizes a post field based on context.
2832   *
2833   * Possible context values are:  'raw', 'edit', 'db', 'display', 'attribute' and
2834   * 'js'. The 'display' context is used by default. 'attribute' and 'js' contexts
2835   * are treated like 'display' when calling filters.
2836   *
2837   * @since 2.3.0
2838   * @since 4.4.0 Like `sanitize_post()`, `$context` defaults to 'display'.
2839   *
2840   * @param string $field   The Post Object field name.
2841   * @param mixed  $value   The Post Object value.
2842   * @param int    $post_id Post ID.
2843   * @param string $context Optional. How to sanitize the field. Possible values are 'raw', 'edit',
2844   *                        'db', 'display', 'attribute' and 'js'. Default 'display'.
2845   * @return mixed Sanitized value.
2846   */
2847  function sanitize_post_field( $field, $value, $post_id, $context = 'display' ) {
2848      $int_fields = array( 'ID', 'post_parent', 'menu_order' );
2849      if ( in_array( $field, $int_fields, true ) ) {
2850          $value = (int) $value;
2851      }
2852  
2853      // Fields which contain arrays of integers.
2854      $array_int_fields = array( 'ancestors' );
2855      if ( in_array( $field, $array_int_fields, true ) ) {
2856          $value = array_map( 'absint', $value );
2857          return $value;
2858      }
2859  
2860      if ( 'raw' === $context ) {
2861          return $value;
2862      }
2863  
2864      $prefixed = false;
2865      if ( str_contains( $field, 'post_' ) ) {
2866          $prefixed        = true;
2867          $field_no_prefix = str_replace( 'post_', '', $field );
2868      }
2869  
2870      if ( 'edit' === $context ) {
2871          $format_to_edit = array( 'post_content', 'post_excerpt', 'post_title', 'post_password' );
2872  
2873          if ( $prefixed ) {
2874  
2875              /**
2876               * Filters the value of a specific post field to edit.
2877               *
2878               * The dynamic portion of the hook name, `$field`, refers to the post
2879               * field name.
2880               *
2881               * @since 2.3.0
2882               *
2883               * @param mixed $value   Value of the post field.
2884               * @param int   $post_id Post ID.
2885               */
2886              $value = apply_filters( "edit_{$field}", $value, $post_id );
2887  
2888              /**
2889               * Filters the value of a specific post field to edit.
2890               *
2891               * The dynamic portion of the hook name, `$field_no_prefix`, refers to
2892               * the post field name.
2893               *
2894               * @since 2.3.0
2895               *
2896               * @param mixed $value   Value of the post field.
2897               * @param int   $post_id Post ID.
2898               */
2899              $value = apply_filters( "{$field_no_prefix}_edit_pre", $value, $post_id );
2900          } else {
2901              $value = apply_filters( "edit_post_{$field}", $value, $post_id );
2902          }
2903  
2904          if ( in_array( $field, $format_to_edit, true ) ) {
2905              if ( 'post_content' === $field ) {
2906                  $value = format_to_edit( $value, user_can_richedit() );
2907              } else {
2908                  $value = format_to_edit( $value );
2909              }
2910          } else {
2911              $value = esc_attr( $value );
2912          }
2913      } elseif ( 'db' === $context ) {
2914          if ( $prefixed ) {
2915  
2916              /**
2917               * Filters the value of a specific post field before saving.
2918               *
2919               * The dynamic portion of the hook name, `$field`, refers to the post
2920               * field name.
2921               *
2922               * @since 2.3.0
2923               *
2924               * @param mixed $value Value of the post field.
2925               */
2926              $value = apply_filters( "pre_{$field}", $value );
2927  
2928              /**
2929               * Filters the value of a specific field before saving.
2930               *
2931               * The dynamic portion of the hook name, `$field_no_prefix`, refers
2932               * to the post field name.
2933               *
2934               * @since 2.3.0
2935               *
2936               * @param mixed $value Value of the post field.
2937               */
2938              $value = apply_filters( "{$field_no_prefix}_save_pre", $value );
2939          } else {
2940              $value = apply_filters( "pre_post_{$field}", $value );
2941  
2942              /**
2943               * Filters the value of a specific post field before saving.
2944               *
2945               * The dynamic portion of the hook name, `$field`, refers to the post
2946               * field name.
2947               *
2948               * @since 2.3.0
2949               *
2950               * @param mixed $value Value of the post field.
2951               */
2952              $value = apply_filters( "{$field}_pre", $value );
2953          }
2954      } else {
2955  
2956          // Use display filters by default.
2957          if ( $prefixed ) {
2958  
2959              /**
2960               * Filters the value of a specific post field for display.
2961               *
2962               * The dynamic portion of the hook name, `$field`, refers to the post
2963               * field name.
2964               *
2965               * @since 2.3.0
2966               *
2967               * @param mixed  $value   Value of the prefixed post field.
2968               * @param int    $post_id Post ID.
2969               * @param string $context Context for how to sanitize the field.
2970               *                        Accepts 'raw', 'edit', 'db', 'display',
2971               *                        'attribute', or 'js'. Default 'display'.
2972               */
2973              $value = apply_filters( "{$field}", $value, $post_id, $context );
2974          } else {
2975              $value = apply_filters( "post_{$field}", $value, $post_id, $context );
2976          }
2977  
2978          if ( 'attribute' === $context ) {
2979              $value = esc_attr( $value );
2980          } elseif ( 'js' === $context ) {
2981              $value = esc_js( $value );
2982          }
2983      }
2984  
2985      // Restore the type for integer fields after esc_attr().
2986      if ( in_array( $field, $int_fields, true ) ) {
2987          $value = (int) $value;
2988      }
2989  
2990      return $value;
2991  }
2992  
2993  /**
2994   * Makes a post sticky.
2995   *
2996   * Sticky posts should be displayed at the top of the front page.
2997   *
2998   * @since 2.7.0
2999   *
3000   * @param int $post_id Post ID.
3001   */
3002  function stick_post( $post_id ) {
3003      $post_id  = (int) $post_id;
3004      $stickies = get_option( 'sticky_posts' );
3005      $updated  = false;
3006  
3007      if ( ! is_array( $stickies ) ) {
3008          $stickies = array();
3009      } else {
3010          $stickies = array_unique( array_map( 'intval', $stickies ) );
3011      }
3012  
3013      if ( ! in_array( $post_id, $stickies, true ) ) {
3014          $stickies[] = $post_id;
3015          $updated    = update_option( 'sticky_posts', array_values( $stickies ) );
3016      }
3017  
3018      if ( $updated ) {
3019          /**
3020           * Fires once a post has been added to the sticky list.
3021           *
3022           * @since 4.6.0
3023           *
3024           * @param int $post_id ID of the post that was stuck.
3025           */
3026          do_action( 'post_stuck', $post_id );
3027      }
3028  }
3029  
3030  /**
3031   * Un-sticks a post.
3032   *
3033   * Sticky posts should be displayed at the top of the front page.
3034   *
3035   * @since 2.7.0
3036   *
3037   * @param int $post_id Post ID.
3038   */
3039  function unstick_post( $post_id ) {
3040      $post_id  = (int) $post_id;
3041      $stickies = get_option( 'sticky_posts' );
3042  
3043      if ( ! is_array( $stickies ) ) {
3044          return;
3045      }
3046  
3047      $stickies = array_values( array_unique( array_map( 'intval', $stickies ) ) );
3048  
3049      if ( ! in_array( $post_id, $stickies, true ) ) {
3050          return;
3051      }
3052  
3053      $offset = array_search( $post_id, $stickies, true );
3054      if ( false === $offset ) {
3055          return;
3056      }
3057  
3058      array_splice( $stickies, $offset, 1 );
3059  
3060      $updated = update_option( 'sticky_posts', $stickies );
3061  
3062      if ( $updated ) {
3063          /**
3064           * Fires once a post has been removed from the sticky list.
3065           *
3066           * @since 4.6.0
3067           *
3068           * @param int $post_id ID of the post that was unstuck.
3069           */
3070          do_action( 'post_unstuck', $post_id );
3071      }
3072  }
3073  
3074  /**
3075   * Returns the cache key for wp_count_posts() based on the passed arguments.
3076   *
3077   * @since 3.9.0
3078   * @access private
3079   *
3080   * @param string $type Optional. Post type to retrieve count Default 'post'.
3081   * @param string $perm Optional. 'readable' or empty. Default empty.
3082   * @return string The cache key.
3083   */
3084  function _count_posts_cache_key( $type = 'post', $perm = '' ) {
3085      $cache_key = 'posts-' . $type;
3086  
3087      if ( 'readable' === $perm && is_user_logged_in() ) {
3088          $post_type_object = get_post_type_object( $type );
3089  
3090          if ( $post_type_object && ! current_user_can( $post_type_object->cap->read_private_posts ) ) {
3091              $cache_key .= '_' . $perm . '_' . get_current_user_id();
3092          }
3093      }
3094  
3095      return $cache_key;
3096  }
3097  
3098  /**
3099   * Counts number of posts of a post type and if user has permissions to view.
3100   *
3101   * This function provides an efficient method of finding the amount of post's
3102   * type a blog has. Another method is to count the amount of items in
3103   * get_posts(), but that method has a lot of overhead with doing so. Therefore,
3104   * when developing for 2.5+, use this function instead.
3105   *
3106   * The $perm parameter checks for 'readable' value and if the user can read
3107   * private posts, it will display that for the user that is signed in.
3108   *
3109   * @since 2.5.0
3110   *
3111   * @global wpdb $wpdb WordPress database abstraction object.
3112   *
3113   * @param string $type Optional. Post type to retrieve count. Default 'post'.
3114   * @param string $perm Optional. 'readable' or empty. Default empty.
3115   * @return stdClass An object containing the number of posts for each status,
3116   *                  or an empty object if the post type does not exist.
3117   */
3118  function wp_count_posts( $type = 'post', $perm = '' ) {
3119      global $wpdb;
3120  
3121      if ( ! post_type_exists( $type ) ) {
3122          return new stdClass();
3123      }
3124  
3125      $cache_key = _count_posts_cache_key( $type, $perm );
3126  
3127      $counts = wp_cache_get( $cache_key, 'counts' );
3128      if ( false !== $counts ) {
3129          // We may have cached this before every status was registered.
3130          foreach ( get_post_stati() as $status ) {
3131              if ( ! isset( $counts->{$status} ) ) {
3132                  $counts->{$status} = 0;
3133              }
3134          }
3135  
3136          /** This filter is documented in wp-includes/post.php */
3137          return apply_filters( 'wp_count_posts', $counts, $type, $perm );
3138      }
3139  
3140      $query = "SELECT post_status, COUNT( * ) AS num_posts FROM {$wpdb->posts} WHERE post_type = %s";
3141  
3142      if ( 'readable' === $perm && is_user_logged_in() ) {
3143          $post_type_object = get_post_type_object( $type );
3144          if ( ! current_user_can( $post_type_object->cap->read_private_posts ) ) {
3145              $query .= $wpdb->prepare(
3146                  " AND (post_status != 'private' OR ( post_author = %d AND post_status = 'private' ))",
3147                  get_current_user_id()
3148              );
3149          }
3150      }
3151  
3152      $query .= ' GROUP BY post_status';
3153  
3154      $results = (array) $wpdb->get_results( $wpdb->prepare( $query, $type ), ARRAY_A );
3155      $counts  = array_fill_keys( get_post_stati(), 0 );
3156  
3157      foreach ( $results as $row ) {
3158          $counts[ $row['post_status'] ] = $row['num_posts'];
3159      }
3160  
3161      $counts = (object) $counts;
3162      wp_cache_set( $cache_key, $counts, 'counts' );
3163  
3164      /**
3165       * Filters the post counts by status for the current post type.
3166       *
3167       * @since 3.7.0
3168       *
3169       * @param stdClass $counts An object containing the current post_type's post
3170       *                         counts by status.
3171       * @param string   $type   Post type.
3172       * @param string   $perm   The permission to determine if the posts are 'readable'
3173       *                         by the current user.
3174       */
3175      return apply_filters( 'wp_count_posts', $counts, $type, $perm );
3176  }
3177  
3178  /**
3179   * Counts number of attachments for the mime type(s).
3180   *
3181   * If you set the optional mime_type parameter, then an array will still be
3182   * returned, but will only have the item you are looking for. It does not give
3183   * you the number of attachments that are children of a post. You can get that
3184   * by counting the number of children that post has.
3185   *
3186   * @since 2.5.0
3187   *
3188   * @global wpdb $wpdb WordPress database abstraction object.
3189   *
3190   * @param string|string[] $mime_type Optional. Array or comma-separated list of
3191   *                                   MIME patterns. Default empty.
3192   * @return stdClass An object containing the attachment counts by mime type.
3193   */
3194  function wp_count_attachments( $mime_type = '' ) {
3195      global $wpdb;
3196  
3197      $cache_key = sprintf(
3198          'attachments%s',
3199          ! empty( $mime_type ) ? ':' . str_replace( '/', '_', implode( '-', (array) $mime_type ) ) : ''
3200      );
3201  
3202      $counts = wp_cache_get( $cache_key, 'counts' );
3203      if ( false == $counts ) {
3204          $and   = wp_post_mime_type_where( $mime_type );
3205          $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 );
3206  
3207          $counts = array();
3208          foreach ( (array) $count as $row ) {
3209              $counts[ $row['post_mime_type'] ] = $row['num_posts'];
3210          }
3211          $counts['trash'] = $wpdb->get_var( "SELECT COUNT( * ) FROM $wpdb->posts WHERE post_type = 'attachment' AND post_status = 'trash' $and" );
3212  
3213          wp_cache_set( $cache_key, (object) $counts, 'counts' );
3214      }
3215  
3216      /**
3217       * Filters the attachment counts by mime type.
3218       *
3219       * @since 3.7.0
3220       *
3221       * @param stdClass        $counts    An object containing the attachment counts by
3222       *                                   mime type.
3223       * @param string|string[] $mime_type Array or comma-separated list of MIME patterns.
3224       */
3225      return apply_filters( 'wp_count_attachments', (object) $counts, $mime_type );
3226  }
3227  
3228  /**
3229   * Gets default post mime types.
3230   *
3231   * @since 2.9.0
3232   * @since 5.3.0 Added the 'Documents', 'Spreadsheets', and 'Archives' mime type groups.
3233   *
3234   * @return array List of post mime types.
3235   */
3236  function get_post_mime_types() {
3237      $post_mime_types = array(   // array( adj, noun )
3238          'image'       => array(
3239              __( 'Images' ),
3240              __( 'Manage Images' ),
3241              /* translators: %s: Number of images. */
3242              _n_noop(
3243                  'Image <span class="count">(%s)</span>',
3244                  'Images <span class="count">(%s)</span>'
3245              ),
3246          ),
3247          'audio'       => array(
3248              _x( 'Audio', 'file type group' ),
3249              __( 'Manage Audio' ),
3250              /* translators: %s: Number of audio files. */
3251              _n_noop(
3252                  'Audio <span class="count">(%s)</span>',
3253                  'Audio <span class="count">(%s)</span>'
3254              ),
3255          ),
3256          'video'       => array(
3257              _x( 'Video', 'file type group' ),
3258              __( 'Manage Video' ),
3259              /* translators: %s: Number of video files. */
3260              _n_noop(
3261                  'Video <span class="count">(%s)</span>',
3262                  'Video <span class="count">(%s)</span>'
3263              ),
3264          ),
3265          'document'    => array(
3266              __( 'Documents' ),
3267              __( 'Manage Documents' ),
3268              /* translators: %s: Number of documents. */
3269              _n_noop(
3270                  'Document <span class="count">(%s)</span>',
3271                  'Documents <span class="count">(%s)</span>'
3272              ),
3273          ),
3274          'spreadsheet' => array(
3275              __( 'Spreadsheets' ),
3276              __( 'Manage Spreadsheets' ),
3277              /* translators: %s: Number of spreadsheets. */
3278              _n_noop(
3279                  'Spreadsheet <span class="count">(%s)</span>',
3280                  'Spreadsheets <span class="count">(%s)</span>'
3281              ),
3282          ),
3283          'archive'     => array(
3284              _x( 'Archives', 'file type group' ),
3285              __( 'Manage Archives' ),
3286              /* translators: %s: Number of archives. */
3287              _n_noop(
3288                  'Archive <span class="count">(%s)</span>',
3289                  'Archives <span class="count">(%s)</span>'
3290              ),
3291          ),
3292      );
3293  
3294      $ext_types  = wp_get_ext_types();
3295      $mime_types = wp_get_mime_types();
3296  
3297      foreach ( $post_mime_types as $group => $labels ) {
3298          if ( in_array( $group, array( 'image', 'audio', 'video' ), true ) ) {
3299              continue;
3300          }
3301  
3302          if ( ! isset( $ext_types[ $group ] ) ) {
3303              unset( $post_mime_types[ $group ] );
3304              continue;
3305          }
3306  
3307          $group_mime_types = array();
3308          foreach ( $ext_types[ $group ] as $extension ) {
3309              foreach ( $mime_types as $exts => $mime ) {
3310                  if ( preg_match( '!^(' . $exts . ')$!i', $extension ) ) {
3311                      $group_mime_types[] = $mime;
3312                      break;
3313                  }
3314              }
3315          }
3316          $group_mime_types = implode( ',', array_unique( $group_mime_types ) );
3317  
3318          $post_mime_types[ $group_mime_types ] = $labels;
3319          unset( $post_mime_types[ $group ] );
3320      }
3321  
3322      /**
3323       * Filters the default list of post mime types.
3324       *
3325       * @since 2.5.0
3326       *
3327       * @param array $post_mime_types Default list of post mime types.
3328       */
3329      return apply_filters( 'post_mime_types', $post_mime_types );
3330  }
3331  
3332  /**
3333   * Checks a MIME-Type against a list.
3334   *
3335   * If the `$wildcard_mime_types` parameter is a string, it must be comma separated
3336   * list. If the `$real_mime_types` is a string, it is also comma separated to
3337   * create the list.
3338   *
3339   * @since 2.5.0
3340   *
3341   * @param string|string[] $wildcard_mime_types Mime types, e.g. `audio/mpeg`, `image` (same as `image/*`),
3342   *                                             or `flash` (same as `*flash*`).
3343   * @param string|string[] $real_mime_types     Real post mime type values.
3344   * @return array array(wildcard=>array(real types)).
3345   */
3346  function wp_match_mime_types( $wildcard_mime_types, $real_mime_types ) {
3347      $matches = array();
3348      if ( is_string( $wildcard_mime_types ) ) {
3349          $wildcard_mime_types = array_map( 'trim', explode( ',', $wildcard_mime_types ) );
3350      }
3351      if ( is_string( $real_mime_types ) ) {
3352          $real_mime_types = array_map( 'trim', explode( ',', $real_mime_types ) );
3353      }
3354  
3355      $patternses = array();
3356      $wild       = '[-._a-z0-9]*';
3357  
3358      foreach ( (array) $wildcard_mime_types as $type ) {
3359          $mimes = array_map( 'trim', explode( ',', $type ) );
3360          foreach ( $mimes as $mime ) {
3361              $regex = str_replace( '__wildcard__', $wild, preg_quote( str_replace( '*', '__wildcard__', $mime ) ) );
3362  
3363              $patternses[][ $type ] = "^$regex$";
3364  
3365              if ( ! str_contains( $mime, '/' ) ) {
3366                  $patternses[][ $type ] = "^$regex/";
3367                  $patternses[][ $type ] = $regex;
3368              }
3369          }
3370      }
3371      asort( $patternses );
3372  
3373      foreach ( $patternses as $patterns ) {
3374          foreach ( $patterns as $type => $pattern ) {
3375              foreach ( (array) $real_mime_types as $real ) {
3376                  if ( preg_match( "#$pattern#", $real )
3377                      && ( empty( $matches[ $type ] ) || false === array_search( $real, $matches[ $type ], true ) )
3378                  ) {
3379                      $matches[ $type ][] = $real;
3380                  }
3381              }
3382          }
3383      }
3384  
3385      return $matches;
3386  }
3387  
3388  /**
3389   * Converts MIME types into SQL.
3390   *
3391   * @since 2.5.0
3392   *
3393   * @param string|string[] $post_mime_types List of mime types or comma separated string
3394   *                                         of mime types.
3395   * @param string          $table_alias     Optional. Specify a table alias, if needed.
3396   *                                         Default empty.
3397   * @return string The SQL AND clause for mime searching.
3398   */
3399  function wp_post_mime_type_where( $post_mime_types, $table_alias = '' ) {
3400      $where     = '';
3401      $wildcards = array( '', '%', '%/%' );
3402      if ( is_string( $post_mime_types ) ) {
3403          $post_mime_types = array_map( 'trim', explode( ',', $post_mime_types ) );
3404      }
3405  
3406      $where_clauses = array();
3407  
3408      foreach ( (array) $post_mime_types as $mime_type ) {
3409          $mime_type = preg_replace( '/\s/', '', $mime_type );
3410          $slashpos  = strpos( $mime_type, '/' );
3411          if ( false !== $slashpos ) {
3412              $mime_group    = preg_replace( '/[^-*.a-zA-Z0-9]/', '', substr( $mime_type, 0, $slashpos ) );
3413              $mime_subgroup = preg_replace( '/[^-*.+a-zA-Z0-9]/', '', substr( $mime_type, $slashpos + 1 ) );
3414              if ( empty( $mime_subgroup ) ) {
3415                  $mime_subgroup = '*';
3416              } else {
3417                  $mime_subgroup = str_replace( '/', '', $mime_subgroup );
3418              }
3419              $mime_pattern = "$mime_group/$mime_subgroup";
3420          } else {
3421              $mime_pattern = preg_replace( '/[^-*.a-zA-Z0-9]/', '', $mime_type );
3422              if ( ! str_contains( $mime_pattern, '*' ) ) {
3423                  $mime_pattern .= '/*';
3424              }
3425          }
3426  
3427          $mime_pattern = preg_replace( '/\*+/', '%', $mime_pattern );
3428  
3429          if ( in_array( $mime_type, $wildcards, true ) ) {
3430              return '';
3431          }
3432  
3433          if ( str_contains( $mime_pattern, '%' ) ) {
3434              $where_clauses[] = empty( $table_alias ) ? "post_mime_type LIKE '$mime_pattern'" : "$table_alias.post_mime_type LIKE '$mime_pattern'";
3435          } else {
3436              $where_clauses[] = empty( $table_alias ) ? "post_mime_type = '$mime_pattern'" : "$table_alias.post_mime_type = '$mime_pattern'";
3437          }
3438      }
3439  
3440      if ( ! empty( $where_clauses ) ) {
3441          $where = ' AND (' . implode( ' OR ', $where_clauses ) . ') ';
3442      }
3443  
3444      return $where;
3445  }
3446  
3447  /**
3448   * Trashes or deletes a post or page.
3449   *
3450   * When the post and page is permanently deleted, everything that is tied to
3451   * it is deleted also. This includes comments, post meta fields, and terms
3452   * associated with the post.
3453   *
3454   * The post or page is moved to Trash instead of permanently deleted unless
3455   * Trash is disabled, item is already in the Trash, or $force_delete is true.
3456   *
3457   * @since 1.0.0
3458   *
3459   * @global wpdb $wpdb WordPress database abstraction object.
3460   * @see wp_delete_attachment()
3461   * @see wp_trash_post()
3462   *
3463   * @param int  $post_id      Optional. Post ID. Default 0.
3464   * @param bool $force_delete Optional. Whether to bypass Trash and force deletion.
3465   *                           Default false.
3466   * @return WP_Post|false|null Post data on success, false or null on failure.
3467   */
3468  function wp_delete_post( $post_id = 0, $force_delete = false ) {
3469      global $wpdb;
3470  
3471      $post = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->posts WHERE ID = %d", $post_id ) );
3472  
3473      if ( ! $post ) {
3474          return $post;
3475      }
3476  
3477      $post = get_post( $post );
3478  
3479      if ( ! $force_delete
3480          && ( 'post' === $post->post_type || 'page' === $post->post_type )
3481          && 'trash' !== get_post_status( $post_id ) && EMPTY_TRASH_DAYS
3482      ) {
3483          return wp_trash_post( $post_id );
3484      }
3485  
3486      if ( 'attachment' === $post->post_type ) {
3487          return wp_delete_attachment( $post_id, $force_delete );
3488      }
3489  
3490      /**
3491       * Filters whether a post deletion should take place.
3492       *
3493       * @since 4.4.0
3494       *
3495       * @param WP_Post|false|null $delete       Whether to go forward with deletion.
3496       * @param WP_Post            $post         Post object.
3497       * @param bool               $force_delete Whether to bypass the Trash.
3498       */
3499      $check = apply_filters( 'pre_delete_post', null, $post, $force_delete );
3500      if ( null !== $check ) {
3501          return $check;
3502      }
3503  
3504      /**
3505       * Fires before a post is deleted, at the start of wp_delete_post().
3506       *
3507       * @since 3.2.0
3508       * @since 5.5.0 Added the `$post` parameter.
3509       *
3510       * @see wp_delete_post()
3511       *
3512       * @param int     $post_id Post ID.
3513       * @param WP_Post $post    Post object.
3514       */
3515      do_action( 'before_delete_post', $post_id, $post );
3516  
3517      delete_post_meta( $post_id, '_wp_trash_meta_status' );
3518      delete_post_meta( $post_id, '_wp_trash_meta_time' );
3519  
3520      wp_delete_object_term_relationships( $post_id, get_object_taxonomies( $post->post_type ) );
3521  
3522      $parent_data  = array( 'post_parent' => $post->post_parent );
3523      $parent_where = array( 'post_parent' => $post_id );
3524  
3525      if ( is_post_type_hierarchical( $post->post_type ) ) {
3526          // Point children of this page to its parent, also clean the cache of affected children.
3527          $children_query = $wpdb->prepare(
3528              "SELECT * FROM $wpdb->posts WHERE post_parent = %d AND post_type = %s",
3529              $post_id,
3530              $post->post_type
3531          );
3532  
3533          $children = $wpdb->get_results( $children_query );
3534  
3535          if ( $children ) {
3536              $wpdb->update( $wpdb->posts, $parent_data, $parent_where + array( 'post_type' => $post->post_type ) );
3537          }
3538      }
3539  
3540      // Do raw query. wp_get_post_revisions() is filtered.
3541      $revision_ids = $wpdb->get_col(
3542          $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_parent = %d AND post_type = 'revision'", $post_id )
3543      );
3544  
3545      // Use wp_delete_post (via wp_delete_post_revision) again. Ensures any meta/misplaced data gets cleaned up.
3546      foreach ( $revision_ids as $revision_id ) {
3547          wp_delete_post_revision( $revision_id );
3548      }
3549  
3550      // Point all attachments to this post up one level.
3551      $wpdb->update( $wpdb->posts, $parent_data, $parent_where + array( 'post_type' => 'attachment' ) );
3552  
3553      wp_defer_comment_counting( true );
3554  
3555      $comment_ids = $wpdb->get_col(
3556          $wpdb->prepare( "SELECT comment_ID FROM $wpdb->comments WHERE comment_post_ID = %d ORDER BY comment_ID DESC", $post_id )
3557      );
3558  
3559      foreach ( $comment_ids as $comment_id ) {
3560          wp_delete_comment( $comment_id, true );
3561      }
3562  
3563      wp_defer_comment_counting( false );
3564  
3565      $post_meta_ids = $wpdb->get_col(
3566          $wpdb->prepare( "SELECT meta_id FROM $wpdb->postmeta WHERE post_id = %d ", $post_id )
3567      );
3568  
3569      foreach ( $post_meta_ids as $mid ) {
3570          delete_metadata_by_mid( 'post', $mid );
3571      }
3572  
3573      /**
3574       * Fires immediately before a post is deleted from the database.
3575       *
3576       * The dynamic portion of the hook name, `$post->post_type`, refers to
3577       * the post type slug.
3578       *
3579       * @since 6.6.0
3580       *
3581       * @param int     $post_id Post ID.
3582       * @param WP_Post $post    Post object.
3583       */
3584      do_action( "delete_post_{$post->post_type}", $post_id, $post );
3585  
3586      /**
3587       * Fires immediately before a post is deleted from the database.
3588       *
3589       * @since 1.2.0
3590       * @since 5.5.0 Added the `$post` parameter.
3591       *
3592       * @param int     $post_id Post ID.
3593       * @param WP_Post $post    Post object.
3594       */
3595      do_action( 'delete_post', $post_id, $post );
3596  
3597      $result = $wpdb->delete( $wpdb->posts, array( 'ID' => $post_id ) );
3598      if ( ! $result ) {
3599          return false;
3600      }
3601  
3602      /**
3603       * Fires immediately after a post is deleted from the database.
3604       *
3605       * The dynamic portion of the hook name, `$post->post_type`, refers to
3606       * the post type slug.
3607       *
3608       * @since 6.6.0
3609       *
3610       * @param int     $post_id Post ID.
3611       * @param WP_Post $post    Post object.
3612       */
3613      do_action( "deleted_post_{$post->post_type}", $post_id, $post );
3614  
3615      /**
3616       * Fires immediately after a post is deleted from the database.
3617       *
3618       * @since 2.2.0
3619       * @since 5.5.0 Added the `$post` parameter.
3620       *
3621       * @param int     $post_id Post ID.
3622       * @param WP_Post $post    Post object.
3623       */
3624      do_action( 'deleted_post', $post_id, $post );
3625  
3626      clean_post_cache( $post );
3627  
3628      if ( is_post_type_hierarchical( $post->post_type ) && $children ) {
3629          foreach ( $children as $child ) {
3630              clean_post_cache( $child );
3631          }
3632      }
3633  
3634      wp_clear_scheduled_hook( 'publish_future_post', array( $post_id ) );
3635  
3636      /**
3637       * Fires after a post is deleted, at the conclusion of wp_delete_post().
3638       *
3639       * @since 3.2.0
3640       * @since 5.5.0 Added the `$post` parameter.
3641       *
3642       * @see wp_delete_post()
3643       *
3644       * @param int     $post_id Post ID.
3645       * @param WP_Post $post    Post object.
3646       */
3647      do_action( 'after_delete_post', $post_id, $post );
3648  
3649      return $post;
3650  }
3651  
3652  /**
3653   * Resets the page_on_front, show_on_front, and page_for_post settings when
3654   * a linked page is deleted or trashed.
3655   *
3656   * Also ensures the post is no longer sticky.
3657   *
3658   * @since 3.7.0
3659   * @access private
3660   *
3661   * @param int $post_id Post ID.
3662   */
3663  function _reset_front_page_settings_for_post( $post_id ) {
3664      $post = get_post( $post_id );
3665  
3666      if ( 'page' === $post->post_type ) {
3667          /*
3668           * If the page is defined in option page_on_front or post_for_posts,
3669           * adjust the corresponding options.
3670           */
3671          if ( get_option( 'page_on_front' ) == $post->ID ) {
3672              update_option( 'show_on_front', 'posts' );
3673              update_option( 'page_on_front', 0 );
3674          }
3675          if ( get_option( 'page_for_posts' ) == $post->ID ) {
3676              update_option( 'page_for_posts', 0 );
3677          }
3678      }
3679  
3680      unstick_post( $post->ID );
3681  }
3682  
3683  /**
3684   * Moves a post or page to the Trash
3685   *
3686   * If Trash is disabled, the post or page is permanently deleted.
3687   *
3688   * @since 2.9.0
3689   *
3690   * @see wp_delete_post()
3691   *
3692   * @param int $post_id Optional. Post ID. Default is the ID of the global `$post`
3693   *                     if `EMPTY_TRASH_DAYS` equals true.
3694   * @return WP_Post|false|null Post data on success, false or null on failure.
3695   */
3696  function wp_trash_post( $post_id = 0 ) {
3697      if ( ! EMPTY_TRASH_DAYS ) {
3698          return wp_delete_post( $post_id, true );
3699      }
3700  
3701      $post = get_post( $post_id );
3702  
3703      if ( ! $post ) {
3704          return $post;
3705      }
3706  
3707      if ( 'trash' === $post->post_status ) {
3708          return false;
3709      }
3710  
3711      $previous_status = $post->post_status;
3712  
3713      /**
3714       * Filters whether a post trashing should take place.
3715       *
3716       * @since 4.9.0
3717       * @since 6.3.0 Added the `$previous_status` parameter.
3718       *
3719       * @param bool|null $trash           Whether to go forward with trashing.
3720       * @param WP_Post   $post            Post object.
3721       * @param string    $previous_status The status of the post about to be trashed.
3722       */
3723      $check = apply_filters( 'pre_trash_post', null, $post, $previous_status );
3724  
3725      if ( null !== $check ) {
3726          return $check;
3727      }
3728  
3729      /**
3730       * Fires before a post is sent to the Trash.
3731       *
3732       * @since 3.3.0
3733       * @since 6.3.0 Added the `$previous_status` parameter.
3734       *
3735       * @param int    $post_id         Post ID.
3736       * @param string $previous_status The status of the post about to be trashed.
3737       */
3738      do_action( 'wp_trash_post', $post_id, $previous_status );
3739  
3740      add_post_meta( $post_id, '_wp_trash_meta_status', $previous_status );
3741      add_post_meta( $post_id, '_wp_trash_meta_time', time() );
3742  
3743      $post_updated = wp_update_post(
3744          array(
3745              'ID'          => $post_id,
3746              'post_status' => 'trash',
3747          )
3748      );
3749  
3750      if ( ! $post_updated ) {
3751          return false;
3752      }
3753  
3754      wp_trash_post_comments( $post_id );
3755  
3756      /**
3757       * Fires after a post is sent to the Trash.
3758       *
3759       * @since 2.9.0
3760       * @since 6.3.0 Added the `$previous_status` parameter.
3761       *
3762       * @param int    $post_id         Post ID.
3763       * @param string $previous_status The status of the post at the point where it was trashed.
3764       */
3765      do_action( 'trashed_post', $post_id, $previous_status );
3766  
3767      return $post;
3768  }
3769  
3770  /**
3771   * Restores a post from the Trash.
3772   *
3773   * @since 2.9.0
3774   * @since 5.6.0 An untrashed post is now returned to 'draft' status by default, except for
3775   *              attachments which are returned to their original 'inherit' status.
3776   *
3777   * @param int $post_id Optional. Post ID. Default is the ID of the global `$post`.
3778   * @return WP_Post|false|null Post data on success, false or null on failure.
3779   */
3780  function wp_untrash_post( $post_id = 0 ) {
3781      $post = get_post( $post_id );
3782  
3783      if ( ! $post ) {
3784          return $post;
3785      }
3786  
3787      $post_id = $post->ID;
3788  
3789      if ( 'trash' !== $post->post_status ) {
3790          return false;
3791      }
3792  
3793      $previous_status = get_post_meta( $post_id, '_wp_trash_meta_status', true );
3794  
3795      /**
3796       * Filters whether a post untrashing should take place.
3797       *
3798       * @since 4.9.0
3799       * @since 5.6.0 Added the `$previous_status` parameter.
3800       *
3801       * @param bool|null $untrash         Whether to go forward with untrashing.
3802       * @param WP_Post   $post            Post object.
3803       * @param string    $previous_status The status of the post at the point where it was trashed.
3804       */
3805      $check = apply_filters( 'pre_untrash_post', null, $post, $previous_status );
3806      if ( null !== $check ) {
3807          return $check;
3808      }
3809  
3810      /**
3811       * Fires before a post is restored from the Trash.
3812       *
3813       * @since 2.9.0
3814       * @since 5.6.0 Added the `$previous_status` parameter.
3815       *
3816       * @param int    $post_id         Post ID.
3817       * @param string $previous_status The status of the post at the point where it was trashed.
3818       */
3819      do_action( 'untrash_post', $post_id, $previous_status );
3820  
3821      $new_status = ( 'attachment' === $post->post_type ) ? 'inherit' : 'draft';
3822  
3823      /**
3824       * Filters the status that a post gets assigned when it is restored from the trash (untrashed).
3825       *
3826       * By default posts that are restored will be assigned a status of 'draft'. Return the value of `$previous_status`
3827       * in order to assign the status that the post had before it was trashed. The `wp_untrash_post_set_previous_status()`
3828       * function is available for this.
3829       *
3830       * Prior to WordPress 5.6.0, restored posts were always assigned their original status.
3831       *
3832       * @since 5.6.0
3833       *
3834       * @param string $new_status      The new status of the post being restored.
3835       * @param int    $post_id         The ID of the post being restored.
3836       * @param string $previous_status The status of the post at the point where it was trashed.
3837       */
3838      $post_status = apply_filters( 'wp_untrash_post_status', $new_status, $post_id, $previous_status );
3839  
3840      delete_post_meta( $post_id, '_wp_trash_meta_status' );
3841      delete_post_meta( $post_id, '_wp_trash_meta_time' );
3842  
3843      $post_updated = wp_update_post(
3844          array(
3845              'ID'          => $post_id,
3846              'post_status' => $post_status,
3847          )
3848      );
3849  
3850      if ( ! $post_updated ) {
3851          return false;
3852      }
3853  
3854      wp_untrash_post_comments( $post_id );
3855  
3856      /**
3857       * Fires after a post is restored from the Trash.
3858       *
3859       * @since 2.9.0
3860       * @since 5.6.0 Added the `$previous_status` parameter.
3861       *
3862       * @param int    $post_id         Post ID.
3863       * @param string $previous_status The status of the post at the point where it was trashed.
3864       */
3865      do_action( 'untrashed_post', $post_id, $previous_status );
3866  
3867      return $post;
3868  }
3869  
3870  /**
3871   * Moves comments for a post to the Trash.
3872   *
3873   * @since 2.9.0
3874   *
3875   * @global wpdb $wpdb WordPress database abstraction object.
3876   *
3877   * @param int|WP_Post|null $post Optional. Post ID or post object. Defaults to global $post.
3878   * @return mixed|void False on failure.
3879   */
3880  function wp_trash_post_comments( $post = null ) {
3881      global $wpdb;
3882  
3883      $post = get_post( $post );
3884  
3885      if ( ! $post ) {
3886          return;
3887      }
3888  
3889      $post_id = $post->ID;
3890  
3891      /**
3892       * Fires before comments are sent to the Trash.
3893       *
3894       * @since 2.9.0
3895       *
3896       * @param int $post_id Post ID.
3897       */
3898      do_action( 'trash_post_comments', $post_id );
3899  
3900      $comments = $wpdb->get_results( $wpdb->prepare( "SELECT comment_ID, comment_approved FROM $wpdb->comments WHERE comment_post_ID = %d", $post_id ) );
3901  
3902      if ( ! $comments ) {
3903          return;
3904      }
3905  
3906      // Cache current status for each comment.
3907      $statuses = array();
3908      foreach ( $comments as $comment ) {
3909          $statuses[ $comment->comment_ID ] = $comment->comment_approved;
3910      }
3911      add_post_meta( $post_id, '_wp_trash_meta_comments_status', $statuses );
3912  
3913      // Set status for all comments to post-trashed.
3914      $result = $wpdb->update( $wpdb->comments, array( 'comment_approved' => 'post-trashed' ), array( 'comment_post_ID' => $post_id ) );
3915  
3916      clean_comment_cache( array_keys( $statuses ) );
3917  
3918      /**
3919       * Fires after comments are sent to the Trash.
3920       *
3921       * @since 2.9.0
3922       *
3923       * @param int   $post_id  Post ID.
3924       * @param array $statuses Array of comment statuses.
3925       */
3926      do_action( 'trashed_post_comments', $post_id, $statuses );
3927  
3928      return $result;
3929  }
3930  
3931  /**
3932   * Restores comments for a post from the Trash.
3933   *
3934   * @since 2.9.0
3935   *
3936   * @global wpdb $wpdb WordPress database abstraction object.
3937   *
3938   * @param int|WP_Post|null $post Optional. Post ID or post object. Defaults to global $post.
3939   * @return true|void
3940   */
3941  function wp_untrash_post_comments( $post = null ) {
3942      global $wpdb;
3943  
3944      $post = get_post( $post );
3945  
3946      if ( ! $post ) {
3947          return;
3948      }
3949  
3950      $post_id = $post->ID;
3951  
3952      $statuses = get_post_meta( $post_id, '_wp_trash_meta_comments_status', true );
3953  
3954      if ( ! $statuses ) {
3955          return true;
3956      }
3957  
3958      /**
3959       * Fires before comments are restored for a post from the Trash.
3960       *
3961       * @since 2.9.0
3962       *
3963       * @param int $post_id Post ID.
3964       */
3965      do_action( 'untrash_post_comments', $post_id );
3966  
3967      // Restore each comment to its original status.
3968      $group_by_status = array();
3969      foreach ( $statuses as $comment_id => $comment_status ) {
3970          $group_by_status[ $comment_status ][] = $comment_id;
3971      }
3972  
3973      foreach ( $group_by_status as $status => $comments ) {
3974          // Confidence check. This shouldn't happen.
3975          if ( 'post-trashed' === $status ) {
3976              $status = '0';
3977          }
3978          $comments_in = implode( ', ', array_map( 'intval', $comments ) );
3979          $wpdb->query( $wpdb->prepare( "UPDATE $wpdb->comments SET comment_approved = %s WHERE comment_ID IN ($comments_in)", $status ) );
3980      }
3981  
3982      clean_comment_cache( array_keys( $statuses ) );
3983  
3984      delete_post_meta( $post_id, '_wp_trash_meta_comments_status' );
3985  
3986      /**
3987       * Fires after comments are restored for a post from the Trash.
3988       *
3989       * @since 2.9.0
3990       *
3991       * @param int $post_id Post ID.
3992       */
3993      do_action( 'untrashed_post_comments', $post_id );
3994  }
3995  
3996  /**
3997   * Retrieves the list of categories for a post.
3998   *
3999   * Compatibility layer for themes and plugins. Also an easy layer of abstraction
4000   * away from the complexity of the taxonomy layer.
4001   *
4002   * @since 2.1.0
4003   *
4004   * @see wp_get_object_terms()
4005   *
4006   * @param int   $post_id Optional. The Post ID. Does not default to the ID of the
4007   *                       global $post. Default 0.
4008   * @param array $args    Optional. Category query parameters. Default empty array.
4009   *                       See WP_Term_Query::__construct() for supported arguments.
4010   * @return array|WP_Error List of categories. If the `$fields` argument passed via `$args` is 'all' or
4011   *                        'all_with_object_id', an array of WP_Term objects will be returned. If `$fields`
4012   *                        is 'ids', an array of category IDs. If `$fields` is 'names', an array of category names.
4013   *                        WP_Error object if 'category' taxonomy doesn't exist.
4014   */
4015  function wp_get_post_categories( $post_id = 0, $args = array() ) {
4016      $post_id = (int) $post_id;
4017  
4018      $defaults = array( 'fields' => 'ids' );
4019      $args     = wp_parse_args( $args, $defaults );
4020  
4021      $cats = wp_get_object_terms( $post_id, 'category', $args );
4022      return $cats;
4023  }
4024  
4025  /**
4026   * Retrieves the tags for a post.
4027   *
4028   * There is only one default for this function, called 'fields' and by default
4029   * is set to 'all'. There are other defaults that can be overridden in
4030   * wp_get_object_terms().
4031   *
4032   * @since 2.3.0
4033   *
4034   * @param int   $post_id Optional. The Post ID. Does not default to the ID of the
4035   *                       global $post. Default 0.
4036   * @param array $args    Optional. Tag query parameters. Default empty array.
4037   *                       See WP_Term_Query::__construct() for supported arguments.
4038   * @return array|WP_Error Array of WP_Term objects on success or empty array if no tags were found.
4039   *                        WP_Error object if 'post_tag' taxonomy doesn't exist.
4040   */
4041  function wp_get_post_tags( $post_id = 0, $args = array() ) {
4042      return wp_get_post_terms( $post_id, 'post_tag', $args );
4043  }
4044  
4045  /**
4046   * Retrieves the terms for a post.
4047   *
4048   * @since 2.8.0
4049   *
4050   * @param int             $post_id  Optional. The Post ID. Does not default to the ID of the
4051   *                                  global $post. Default 0.
4052   * @param string|string[] $taxonomy Optional. The taxonomy slug or array of slugs for which
4053   *                                  to retrieve terms. Default 'post_tag'.
4054   * @param array           $args     {
4055   *     Optional. Term query parameters. See WP_Term_Query::__construct() for supported arguments.
4056   *
4057   *     @type string $fields Term fields to retrieve. Default 'all'.
4058   * }
4059   * @return array|WP_Error Array of WP_Term objects on success or empty array if no terms were found.
4060   *                        WP_Error object if `$taxonomy` doesn't exist.
4061   */
4062  function wp_get_post_terms( $post_id = 0, $taxonomy = 'post_tag', $args = array() ) {
4063      $post_id = (int) $post_id;
4064  
4065      $defaults = array( 'fields' => 'all' );
4066      $args     = wp_parse_args( $args, $defaults );
4067  
4068      $tags = wp_get_object_terms( $post_id, $taxonomy, $args );
4069  
4070      return $tags;
4071  }
4072  
4073  /**
4074   * Retrieves a number of recent posts.
4075   *
4076   * @since 1.0.0
4077   *
4078   * @see get_posts()
4079   *
4080   * @param array  $args   Optional. Arguments to retrieve posts. Default empty array.
4081   * @param string $output Optional. The required return type. One of OBJECT or ARRAY_A, which
4082   *                       correspond to a WP_Post object or an associative array, respectively.
4083   *                       Default ARRAY_A.
4084   * @return array|false Array of recent posts, where the type of each element is determined
4085   *                     by the `$output` parameter. Empty array on failure.
4086   */
4087  function wp_get_recent_posts( $args = array(), $output = ARRAY_A ) {
4088  
4089      if ( is_numeric( $args ) ) {
4090          _deprecated_argument( __FUNCTION__, '3.1.0', __( 'Passing an integer number of posts is deprecated. Pass an array of arguments instead.' ) );
4091          $args = array( 'numberposts' => absint( $args ) );
4092      }
4093  
4094      // Set default arguments.
4095      $defaults = array(
4096          'numberposts'      => 10,
4097          'offset'           => 0,
4098          'category'         => 0,
4099          'orderby'          => 'post_date',
4100          'order'            => 'DESC',
4101          'include'          => '',
4102          'exclude'          => '',
4103          'meta_key'         => '',
4104          'meta_value'       => '',
4105          'post_type'        => 'post',
4106          'post_status'      => 'draft, publish, future, pending, private',
4107          'suppress_filters' => true,
4108      );
4109  
4110      $parsed_args = wp_parse_args( $args, $defaults );
4111  
4112      $results = get_posts( $parsed_args );
4113  
4114      // Backward compatibility. Prior to 3.1 expected posts to be returned in array.
4115      if ( ARRAY_A === $output ) {
4116          foreach ( $results as $key => $result ) {
4117              $results[ $key ] = get_object_vars( $result );
4118          }
4119          return $results ? $results : array();
4120      }
4121  
4122      return $results ? $results : false;
4123  }
4124  
4125  /**
4126   * Inserts or update a post.
4127   *
4128   * If the $postarr parameter has 'ID' set to a value, then post will be updated.
4129   *
4130   * You can set the post date manually, by setting the values for 'post_date'
4131   * and 'post_date_gmt' keys. You can close the comments or open the comments by
4132   * setting the value for 'comment_status' key.
4133   *
4134   * @since 1.0.0
4135   * @since 2.6.0 Added the `$wp_error` parameter to allow a WP_Error to be returned on failure.
4136   * @since 4.2.0 Support was added for encoding emoji in the post title, content, and excerpt.
4137   * @since 4.4.0 A 'meta_input' array can now be passed to `$postarr` to add post meta data.
4138   * @since 5.6.0 Added the `$fire_after_hooks` parameter.
4139   *
4140   * @see sanitize_post()
4141   * @global wpdb $wpdb WordPress database abstraction object.
4142   *
4143   * @param array $postarr {
4144   *     An array of elements that make up a post to update or insert.
4145   *
4146   *     @type int    $ID                    The post ID. If equal to something other than 0,
4147   *                                         the post with that ID will be updated. Default 0.
4148   *     @type int    $post_author           The ID of the user who added the post. Default is
4149   *                                         the current user ID.
4150   *     @type string $post_date             The date of the post. Default is the current time.
4151   *     @type string $post_date_gmt         The date of the post in the GMT timezone. Default is
4152   *                                         the value of `$post_date`.
4153   *     @type string $post_content          The post content. Default empty.
4154   *     @type string $post_content_filtered The filtered post content. Default empty.
4155   *     @type string $post_title            The post title. Default empty.
4156   *     @type string $post_excerpt          The post excerpt. Default empty.
4157   *     @type string $post_status           The post status. Default 'draft'.
4158   *     @type string $post_type             The post type. Default 'post'.
4159   *     @type string $comment_status        Whether the post can accept comments. Accepts 'open' or 'closed'.
4160   *                                         Default is the value of 'default_comment_status' option.
4161   *     @type string $ping_status           Whether the post can accept pings. Accepts 'open' or 'closed'.
4162   *                                         Default is the value of 'default_ping_status' option.
4163   *     @type string $post_password         The password to access the post. Default empty.
4164   *     @type string $post_name             The post name. Default is the sanitized post title
4165   *                                         when creating a new post.
4166   *     @type string $to_ping               Space or carriage return-separated list of URLs to ping.
4167   *                                         Default empty.
4168   *     @type string $pinged                Space or carriage return-separated list of URLs that have
4169   *                                         been pinged. Default empty.
4170   *     @type int    $post_parent           Set this for the post it belongs to, if any. Default 0.
4171   *     @type int    $menu_order            The order the post should be displayed in. Default 0.
4172   *     @type string $post_mime_type        The mime type of the post. Default empty.
4173   *     @type string $guid                  Global Unique ID for referencing the post. Default empty.
4174   *     @type int    $import_id             The post ID to be used when inserting a new post.
4175   *                                         If specified, must not match any existing post ID. Default 0.
4176   *     @type int[]  $post_category         Array of category IDs.
4177   *                                         Defaults to value of the 'default_category' option.
4178   *     @type array  $tags_input            Array of tag names, slugs, or IDs. Default empty.
4179   *     @type array  $tax_input             An array of taxonomy terms keyed by their taxonomy name.
4180   *                                         If the taxonomy is hierarchical, the term list needs to be
4181   *                                         either an array of term IDs or a comma-separated string of IDs.
4182   *                                         If the taxonomy is non-hierarchical, the term list can be an array
4183   *                                         that contains term names or slugs, or a comma-separated string
4184   *                                         of names or slugs. This is because, in hierarchical taxonomy,
4185   *                                         child terms can have the same names with different parent terms,
4186   *                                         so the only way to connect them is using ID. Default empty.
4187   *     @type array  $meta_input            Array of post meta values keyed by their post meta key. Default empty.
4188   *     @type string $page_template         Page template to use.
4189   * }
4190   * @param bool  $wp_error         Optional. Whether to return a WP_Error on failure. Default false.
4191   * @param bool  $fire_after_hooks Optional. Whether to fire the after insert hooks. Default true.
4192   * @return int|WP_Error The post ID on success. The value 0 or WP_Error on failure.
4193   */
4194  function wp_insert_post( $postarr, $wp_error = false, $fire_after_hooks = true ) {
4195      global $wpdb;
4196  
4197      // Capture original pre-sanitized array for passing into filters.
4198      $unsanitized_postarr = $postarr;
4199  
4200      $user_id = get_current_user_id();
4201  
4202      $defaults = array(
4203          'post_author'           => $user_id,
4204          'post_content'          => '',
4205          'post_content_filtered' => '',
4206          'post_title'            => '',
4207          'post_excerpt'          => '',
4208          'post_status'           => 'draft',
4209          'post_type'             => 'post',
4210          'comment_status'        => '',
4211          'ping_status'           => '',
4212          'post_password'         => '',
4213          'to_ping'               => '',
4214          'pinged'                => '',
4215          'post_parent'           => 0,
4216          'menu_order'            => 0,
4217          'guid'                  => '',
4218          'import_id'             => 0,
4219          'context'               => '',
4220          'post_date'             => '',
4221          'post_date_gmt'         => '',
4222      );
4223  
4224      $postarr = wp_parse_args( $postarr, $defaults );
4225  
4226      unset( $postarr['filter'] );
4227  
4228      $postarr = sanitize_post( $postarr, 'db' );
4229  
4230      // Are we updating or creating?
4231      $post_id = 0;
4232      $update  = false;
4233      $guid    = $postarr['guid'];
4234  
4235      if ( ! empty( $postarr['ID'] ) ) {
4236          $update = true;
4237  
4238          // Get the post ID and GUID.
4239          $post_id     = $postarr['ID'];
4240          $post_before = get_post( $post_id );
4241  
4242          if ( is_null( $post_before ) ) {
4243              if ( $wp_error ) {
4244                  return new WP_Error( 'invalid_post', __( 'Invalid post ID.' ) );
4245              }
4246              return 0;
4247          }
4248  
4249          $guid            = get_post_field( 'guid', $post_id );
4250          $previous_status = get_post_field( 'post_status', $post_id );
4251      } else {
4252          $previous_status = 'new';
4253          $post_before     = null;
4254      }
4255  
4256      $post_type = empty( $postarr['post_type'] ) ? 'post' : $postarr['post_type'];
4257  
4258      $post_title   = $postarr['post_title'];
4259      $post_content = $postarr['post_content'];
4260      $post_excerpt = $postarr['post_excerpt'];
4261  
4262      if ( isset( $postarr['post_name'] ) ) {
4263          $post_name = $postarr['post_name'];
4264      } elseif ( $update ) {
4265          // For an update, don't modify the post_name if it wasn't supplied as an argument.
4266          $post_name = $post_before->post_name;
4267      }
4268  
4269      $maybe_empty = 'attachment' !== $post_type
4270          && ! $post_content && ! $post_title && ! $post_excerpt
4271          && post_type_supports( $post_type, 'editor' )
4272          && post_type_supports( $post_type, 'title' )
4273          && post_type_supports( $post_type, 'excerpt' );
4274  
4275      /**
4276       * Filters whether the post should be considered "empty".
4277       *
4278       * The post is considered "empty" if both:
4279       * 1. The post type supports the title, editor, and excerpt fields
4280       * 2. The title, editor, and excerpt fields are all empty
4281       *
4282       * Returning a truthy value from the filter will effectively short-circuit
4283       * the new post being inserted and return 0. If $wp_error is true, a WP_Error
4284       * will be returned instead.
4285       *
4286       * @since 3.3.0
4287       *
4288       * @param bool  $maybe_empty Whether the post should be considered "empty".
4289       * @param array $postarr     Array of post data.
4290       */
4291      if ( apply_filters( 'wp_insert_post_empty_content', $maybe_empty, $postarr ) ) {
4292          if ( $wp_error ) {
4293              return new WP_Error( 'empty_content', __( 'Content, title, and excerpt are empty.' ) );
4294          } else {
4295              return 0;
4296          }
4297      }
4298  
4299      $post_status = empty( $postarr['post_status'] ) ? 'draft' : $postarr['post_status'];
4300  
4301      if ( 'attachment' === $post_type && ! in_array( $post_status, array( 'inherit', 'private', 'trash', 'auto-draft' ), true ) ) {
4302          $post_status = 'inherit';
4303      }
4304  
4305      if ( ! empty( $postarr['post_category'] ) ) {
4306          // Filter out empty terms.
4307          $post_category = array_filter( $postarr['post_category'] );
4308      } elseif ( $update && ! isset( $postarr['post_category'] ) ) {
4309          $post_category = $post_before->post_category;
4310      }
4311  
4312      // Make sure we set a valid category.
4313      if ( empty( $post_category ) || 0 === count( $post_category ) || ! is_array( $post_category ) ) {
4314          // 'post' requires at least one category.
4315          if ( 'post' === $post_type && 'auto-draft' !== $post_status ) {
4316              $post_category = array( get_option( 'default_category' ) );
4317          } else {
4318              $post_category = array();
4319          }
4320      }
4321  
4322      /*
4323       * Don't allow contributors to set the post slug for pending review posts.
4324       *
4325       * For new posts check the primitive capability, for updates check the meta capability.
4326       */
4327      if ( 'pending' === $post_status ) {
4328          $post_type_object = get_post_type_object( $post_type );
4329  
4330          if ( ! $update && $post_type_object && ! current_user_can( $post_type_object->cap->publish_posts ) ) {
4331              $post_name = '';
4332          } elseif ( $update && ! current_user_can( 'publish_post', $post_id ) ) {
4333              $post_name = '';
4334          }
4335      }
4336  
4337      /*
4338       * Create a valid post name. Drafts and pending posts are allowed to have
4339       * an empty post name.
4340       */
4341      if ( empty( $post_name ) ) {
4342          if ( ! in_array( $post_status, array( 'draft', 'pending', 'auto-draft' ), true ) ) {
4343              $post_name = sanitize_title( $post_title );
4344          } else {
4345              $post_name = '';
4346          }
4347      } else {
4348          // On updates, we need to check to see if it's using the old, fixed sanitization context.
4349          $check_name = sanitize_title( $post_name, '', 'old-save' );
4350  
4351          if ( $update
4352              && strtolower( urlencode( $post_name ) ) === $check_name
4353              && get_post_field( 'post_name', $post_id ) === $check_name
4354          ) {
4355              $post_name = $check_name;
4356          } else { // New post, or slug has changed.
4357              $post_name = sanitize_title( $post_name );
4358          }
4359      }
4360  
4361      /*
4362       * Resolve the post date from any provided post date or post date GMT strings;
4363       * if none are provided, the date will be set to now.
4364       */
4365      $post_date = wp_resolve_post_date( $postarr['post_date'], $postarr['post_date_gmt'] );
4366  
4367      if ( ! $post_date ) {
4368          if ( $wp_error ) {
4369              return new WP_Error( 'invalid_date', __( 'Invalid date.' ) );
4370          } else {
4371              return 0;
4372          }
4373      }
4374  
4375      if ( empty( $postarr['post_date_gmt'] ) || '0000-00-00 00:00:00' === $postarr['post_date_gmt'] ) {
4376          if ( ! in_array( $post_status, get_post_stati( array( 'date_floating' => true ) ), true ) ) {
4377              $post_date_gmt = get_gmt_from_date( $post_date );
4378          } else {
4379              $post_date_gmt = '0000-00-00 00:00:00';
4380          }
4381      } else {
4382          $post_date_gmt = $postarr['post_date_gmt'];
4383      }
4384  
4385      if ( $update || '0000-00-00 00:00:00' === $post_date ) {
4386          $post_modified     = current_time( 'mysql' );
4387          $post_modified_gmt = current_time( 'mysql', 1 );
4388      } else {
4389          $post_modified     = $post_date;
4390          $post_modified_gmt = $post_date_gmt;
4391      }
4392  
4393      if ( 'attachment' !== $post_type ) {
4394          $now = gmdate( 'Y-m-d H:i:s' );
4395  
4396          if ( 'publish' === $post_status ) {
4397              if ( strtotime( $post_date_gmt ) - strtotime( $now ) >= MINUTE_IN_SECONDS ) {
4398                  $post_status = 'future';
4399              }
4400          } elseif ( 'future' === $post_status ) {
4401              if ( strtotime( $post_date_gmt ) - strtotime( $now ) < MINUTE_IN_SECONDS ) {
4402                  $post_status = 'publish';
4403              }
4404          }
4405      }
4406  
4407      // Comment status.
4408      if ( empty( $postarr['comment_status'] ) ) {
4409          if ( $update ) {
4410              $comment_status = 'closed';
4411          } else {
4412              $comment_status = get_default_comment_status( $post_type );
4413          }
4414      } else {
4415          $comment_status = $postarr['comment_status'];
4416      }
4417  
4418      // These variables are needed by compact() later.
4419      $post_content_filtered = $postarr['post_content_filtered'];
4420      $post_author           = isset( $postarr['post_author'] ) ? $postarr['post_author'] : $user_id;
4421      $ping_status           = empty( $postarr['ping_status'] ) ? get_default_comment_status( $post_type, 'pingback' ) : $postarr['ping_status'];
4422      $to_ping               = isset( $postarr['to_ping'] ) ? sanitize_trackback_urls( $postarr['to_ping'] ) : '';
4423      $pinged                = isset( $postarr['pinged'] ) ? $postarr['pinged'] : '';
4424      $import_id             = isset( $postarr['import_id'] ) ? $postarr['import_id'] : 0;
4425  
4426      /*
4427       * The 'wp_insert_post_parent' filter expects all variables to be present.
4428       * Previously, these variables would have already been extracted
4429       */
4430      if ( isset( $postarr['menu_order'] ) ) {
4431          $menu_order = (int) $postarr['menu_order'];
4432      } else {
4433          $menu_order = 0;
4434      }
4435  
4436      $post_password = isset( $postarr['post_password'] ) ? $postarr['post_password'] : '';
4437      if ( 'private' === $post_status ) {
4438          $post_password = '';
4439      }
4440  
4441      if ( isset( $postarr['post_parent'] ) ) {
4442          $post_parent = (int) $postarr['post_parent'];
4443      } else {
4444          $post_parent = 0;
4445      }
4446  
4447      $new_postarr = array_merge(
4448          array(
4449              'ID' => $post_id,
4450          ),
4451          compact( array_diff( array_keys( $defaults ), array( 'context', 'filter' ) ) )
4452      );
4453  
4454      /**
4455       * Filters the post parent -- used to check for and prevent hierarchy loops.
4456       *
4457       * @since 3.1.0
4458       *
4459       * @param int   $post_parent Post parent ID.
4460       * @param int   $post_id     Post ID.
4461       * @param array $new_postarr Array of parsed post data.
4462       * @param array $postarr     Array of sanitized, but otherwise unmodified post data.
4463       */
4464      $post_parent = apply_filters( 'wp_insert_post_parent', $post_parent, $post_id, $new_postarr, $postarr );
4465  
4466      /*
4467       * If the post is being untrashed and it has a desired slug stored in post meta,
4468       * reassign it.
4469       */
4470      if ( 'trash' === $previous_status && 'trash' !== $post_status ) {
4471          $desired_post_slug = get_post_meta( $post_id, '_wp_desired_post_slug', true );
4472  
4473          if ( $desired_post_slug ) {
4474              delete_post_meta( $post_id, '_wp_desired_post_slug' );
4475              $post_name = $desired_post_slug;
4476          }
4477      }
4478  
4479      // If a trashed post has the desired slug, change it and let this post have it.
4480      if ( 'trash' !== $post_status && $post_name ) {
4481          /**
4482           * Filters whether or not to add a `__trashed` suffix to trashed posts that match the name of the updated post.
4483           *
4484           * @since 5.4.0
4485           *
4486           * @param bool   $add_trashed_suffix Whether to attempt to add the suffix.
4487           * @param string $post_name          The name of the post being updated.
4488           * @param int    $post_id            Post ID.
4489           */
4490          $add_trashed_suffix = apply_filters( 'add_trashed_suffix_to_trashed_posts', true, $post_name, $post_id );
4491  
4492          if ( $add_trashed_suffix ) {
4493              wp_add_trashed_suffix_to_post_name_for_trashed_posts( $post_name, $post_id );
4494          }
4495      }
4496  
4497      // When trashing an existing post, change its slug to allow non-trashed posts to use it.
4498      if ( 'trash' === $post_status && 'trash' !== $previous_status && 'new' !== $previous_status ) {
4499          $post_name = wp_add_trashed_suffix_to_post_name_for_post( $post_id );
4500      }
4501  
4502      $post_name = wp_unique_post_slug( $post_name, $post_id, $post_status, $post_type, $post_parent );
4503  
4504      // Don't unslash.
4505      $post_mime_type = isset( $postarr['post_mime_type'] ) ? $postarr['post_mime_type'] : '';
4506  
4507      // Expected_slashed (everything!).
4508      $data = compact(
4509          'post_author',
4510          'post_date',
4511          'post_date_gmt',
4512          'post_content',
4513          'post_content_filtered',
4514          'post_title',
4515          'post_excerpt',
4516          'post_status',
4517          'post_type',
4518          'comment_status',
4519          'ping_status',
4520          'post_password',
4521          'post_name',
4522          'to_ping',
4523          'pinged',
4524          'post_modified',
4525          'post_modified_gmt',
4526          'post_parent',
4527          'menu_order',
4528          'post_mime_type',
4529          'guid'
4530      );
4531  
4532      $emoji_fields = array( 'post_title', 'post_content', 'post_excerpt' );
4533  
4534      foreach ( $emoji_fields as $emoji_field ) {
4535          if ( isset( $data[ $emoji_field ] ) ) {
4536              $charset = $wpdb->get_col_charset( $wpdb->posts, $emoji_field );
4537  
4538              if ( 'utf8' === $charset ) {
4539                  $data[ $emoji_field ] = wp_encode_emoji( $data[ $emoji_field ] );
4540              }
4541          }
4542      }
4543  
4544      if ( 'attachment' === $post_type ) {
4545          /**
4546           * Filters attachment post data before it is updated in or added to the database.
4547           *
4548           * @since 3.9.0
4549           * @since 5.4.1 The `$unsanitized_postarr` parameter was added.
4550           * @since 6.0.0 The `$update` parameter was added.
4551           *
4552           * @param array $data                An array of slashed, sanitized, and processed attachment post data.
4553           * @param array $postarr             An array of slashed and sanitized attachment post data, but not processed.
4554           * @param array $unsanitized_postarr An array of slashed yet *unsanitized* and unprocessed attachment post data
4555           *                                   as originally passed to wp_insert_post().
4556           * @param bool  $update              Whether this is an existing attachment post being updated.
4557           */
4558          $data = apply_filters( 'wp_insert_attachment_data', $data, $postarr, $unsanitized_postarr, $update );
4559      } else {
4560          /**
4561           * Filters slashed post data just before it is inserted into the database.
4562           *
4563           * @since 2.7.0
4564           * @since 5.4.1 The `$unsanitized_postarr` parameter was added.
4565           * @since 6.0.0 The `$update` parameter was added.
4566           *
4567           * @param array $data                An array of slashed, sanitized, and processed post data.
4568           * @param array $postarr             An array of sanitized (and slashed) but otherwise unmodified post data.
4569           * @param array $unsanitized_postarr An array of slashed yet *unsanitized* and unprocessed post data as
4570           *                                   originally passed to wp_insert_post().
4571           * @param bool  $update              Whether this is an existing post being updated.
4572           */
4573          $data = apply_filters( 'wp_insert_post_data', $data, $postarr, $unsanitized_postarr, $update );
4574      }
4575  
4576      $data  = wp_unslash( $data );
4577      $where = array( 'ID' => $post_id );
4578  
4579      if ( $update ) {
4580          /**
4581           * Fires immediately before an existing post is updated in the database.
4582           *
4583           * @since 2.5.0
4584           *
4585           * @param int   $post_id Post ID.
4586           * @param array $data    Array of unslashed post data.
4587           */
4588          do_action( 'pre_post_update', $post_id, $data );
4589  
4590          if ( false === $wpdb->update( $wpdb->posts, $data, $where ) ) {
4591              if ( $wp_error ) {
4592                  if ( 'attachment' === $post_type ) {
4593                      $message = __( 'Could not update attachment in the database.' );
4594                  } else {
4595                      $message = __( 'Could not update post in the database.' );
4596                  }
4597  
4598                  return new WP_Error( 'db_update_error', $message, $wpdb->last_error );
4599              } else {
4600                  return 0;
4601              }
4602          }
4603      } else {
4604          // If there is a suggested ID, use it if not already present.
4605          if ( ! empty( $import_id ) ) {
4606              $import_id = (int) $import_id;
4607  
4608              if ( ! $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE ID = %d", $import_id ) ) ) {
4609                  $data['ID'] = $import_id;
4610              }
4611          }
4612  
4613          if ( false === $wpdb->insert( $wpdb->posts, $data ) ) {
4614              if ( $wp_error ) {
4615                  if ( 'attachment' === $post_type ) {
4616                      $message = __( 'Could not insert attachment into the database.' );
4617                  } else {
4618                      $message = __( 'Could not insert post into the database.' );
4619                  }
4620  
4621                  return new WP_Error( 'db_insert_error', $message, $wpdb->last_error );
4622              } else {
4623                  return 0;
4624              }
4625          }
4626  
4627          $post_id = (int) $wpdb->insert_id;
4628  
4629          // Use the newly generated $post_id.
4630          $where = array( 'ID' => $post_id );
4631      }
4632  
4633      if ( empty( $data['post_name'] ) && ! in_array( $data['post_status'], array( 'draft', 'pending', 'auto-draft' ), true ) ) {
4634          $data['post_name'] = wp_unique_post_slug( sanitize_title( $data['post_title'], $post_id ), $post_id, $data['post_status'], $post_type, $post_parent );
4635  
4636          $wpdb->update( $wpdb->posts, array( 'post_name' => $data['post_name'] ), $where );
4637          clean_post_cache( $post_id );
4638      }
4639  
4640      if ( is_object_in_taxonomy( $post_type, 'category' ) ) {
4641          wp_set_post_categories( $post_id, $post_category );
4642      }
4643  
4644      if ( isset( $postarr['tags_input'] ) && is_object_in_taxonomy( $post_type, 'post_tag' ) ) {
4645          wp_set_post_tags( $post_id, $postarr['tags_input'] );
4646      }
4647  
4648      // Add default term for all associated custom taxonomies.
4649      if ( 'auto-draft' !== $post_status ) {
4650          foreach ( get_object_taxonomies( $post_type, 'object' ) as $taxonomy => $tax_object ) {
4651  
4652              if ( ! empty( $tax_object->default_term ) ) {
4653  
4654                  // Filter out empty terms.
4655                  if ( isset( $postarr['tax_input'][ $taxonomy ] ) && is_array( $postarr['tax_input'][ $taxonomy ] ) ) {
4656                      $postarr['tax_input'][ $taxonomy ] = array_filter( $postarr['tax_input'][ $taxonomy ] );
4657                  }
4658  
4659                  // Passed custom taxonomy list overwrites the existing list if not empty.
4660                  $terms = wp_get_object_terms( $post_id, $taxonomy, array( 'fields' => 'ids' ) );
4661                  if ( ! empty( $terms ) && empty( $postarr['tax_input'][ $taxonomy ] ) ) {
4662                      $postarr['tax_input'][ $taxonomy ] = $terms;
4663                  }
4664  
4665                  if ( empty( $postarr['tax_input'][ $taxonomy ] ) ) {
4666                      $default_term_id = get_option( 'default_term_' . $taxonomy );
4667                      if ( ! empty( $default_term_id ) ) {
4668                          $postarr['tax_input'][ $taxonomy ] = array( (int) $default_term_id );
4669                      }
4670                  }
4671              }
4672          }
4673      }
4674  
4675      // New-style support for all custom taxonomies.
4676      if ( ! empty( $postarr['tax_input'] ) ) {
4677          foreach ( $postarr['tax_input'] as $taxonomy => $tags ) {
4678              $taxonomy_obj = get_taxonomy( $taxonomy );
4679  
4680              if ( ! $taxonomy_obj ) {
4681                  /* translators: %s: Taxonomy name. */
4682                  _doing_it_wrong( __FUNCTION__, sprintf( __( 'Invalid taxonomy: %s.' ), $taxonomy ), '4.4.0' );
4683                  continue;
4684              }
4685  
4686              // array = hierarchical, string = non-hierarchical.
4687              if ( is_array( $tags ) ) {
4688                  $tags = array_filter( $tags );
4689              }
4690  
4691              if ( current_user_can( $taxonomy_obj->cap->assign_terms ) ) {
4692                  wp_set_post_terms( $post_id, $tags, $taxonomy );
4693              }
4694          }
4695      }
4696  
4697      if ( ! empty( $postarr['meta_input'] ) ) {
4698          foreach ( $postarr['meta_input'] as $field => $value ) {
4699              update_post_meta( $post_id, $field, $value );
4700          }
4701      }
4702  
4703      $current_guid = get_post_field( 'guid', $post_id );
4704  
4705      // Set GUID.
4706      if ( ! $update && '' === $current_guid ) {
4707          $wpdb->update( $wpdb->posts, array( 'guid' => get_permalink( $post_id ) ), $where );
4708      }
4709  
4710      if ( 'attachment' === $postarr['post_type'] ) {
4711          if ( ! empty( $postarr['file'] ) ) {
4712              update_attached_file( $post_id, $postarr['file'] );
4713          }
4714  
4715          if ( ! empty( $postarr['context'] ) ) {
4716              add_post_meta( $post_id, '_wp_attachment_context', $postarr['context'], true );
4717          }
4718      }
4719  
4720      // Set or remove featured image.
4721      if ( isset( $postarr['_thumbnail_id'] ) ) {
4722          $thumbnail_support = current_theme_supports( 'post-thumbnails', $post_type ) && post_type_supports( $post_type, 'thumbnail' ) || 'revision' === $post_type;
4723  
4724          if ( ! $thumbnail_support && 'attachment' === $post_type && $post_mime_type ) {
4725              if ( wp_attachment_is( 'audio', $post_id ) ) {
4726                  $thumbnail_support = post_type_supports( 'attachment:audio', 'thumbnail' ) || current_theme_supports( 'post-thumbnails', 'attachment:audio' );
4727              } elseif ( wp_attachment_is( 'video', $post_id ) ) {
4728                  $thumbnail_support = post_type_supports( 'attachment:video', 'thumbnail' ) || current_theme_supports( 'post-thumbnails', 'attachment:video' );
4729              }
4730          }
4731  
4732          if ( $thumbnail_support ) {
4733              $thumbnail_id = (int) $postarr['_thumbnail_id'];
4734              if ( -1 === $thumbnail_id ) {
4735                  delete_post_thumbnail( $post_id );
4736              } else {
4737                  set_post_thumbnail( $post_id, $thumbnail_id );
4738              }
4739          }
4740      }
4741  
4742      clean_post_cache( $post_id );
4743  
4744      $post = get_post( $post_id );
4745  
4746      if ( ! empty( $postarr['page_template'] ) ) {
4747          $post->page_template = $postarr['page_template'];
4748          $page_templates      = wp_get_theme()->get_page_templates( $post );
4749  
4750          if ( 'default' !== $postarr['page_template'] && ! isset( $page_templates[ $postarr['page_template'] ] ) ) {
4751              if ( $wp_error ) {
4752                  return new WP_Error( 'invalid_page_template', __( 'Invalid page template.' ) );
4753              }
4754  
4755              update_post_meta( $post_id, '_wp_page_template', 'default' );
4756          } else {
4757              update_post_meta( $post_id, '_wp_page_template', $postarr['page_template'] );
4758          }
4759      }
4760  
4761      if ( 'attachment' !== $postarr['post_type'] ) {
4762          wp_transition_post_status( $data['post_status'], $previous_status, $post );
4763      } else {
4764          if ( $update ) {
4765              /**
4766               * Fires once an existing attachment has been updated.
4767               *
4768               * @since 2.0.0
4769               *
4770               * @param int $post_id Attachment ID.
4771               */
4772              do_action( 'edit_attachment', $post_id );
4773  
4774              $post_after = get_post( $post_id );
4775  
4776              /**
4777               * Fires once an existing attachment has been updated.
4778               *
4779               * @since 4.4.0
4780               *
4781               * @param int     $post_id      Post ID.
4782               * @param WP_Post $post_after   Post object following the update.
4783               * @param WP_Post $post_before  Post object before the update.
4784               */
4785              do_action( 'attachment_updated', $post_id, $post_after, $post_before );
4786          } else {
4787  
4788              /**
4789               * Fires once an attachment has been added.
4790               *
4791               * @since 2.0.0
4792               *
4793               * @param int $post_id Attachment ID.
4794               */
4795              do_action( 'add_attachment', $post_id );
4796          }
4797  
4798          return $post_id;
4799      }
4800  
4801      if ( $update ) {
4802          /**
4803           * Fires once an existing post has been updated.
4804           *
4805           * The dynamic portion of the hook name, `$post->post_type`, refers to
4806           * the post type slug.
4807           *
4808           * Possible hook names include:
4809           *
4810           *  - `edit_post_post`
4811           *  - `edit_post_page`
4812           *
4813           * @since 5.1.0
4814           *
4815           * @param int     $post_id Post ID.
4816           * @param WP_Post $post    Post object.
4817           */
4818          do_action( "edit_post_{$post->post_type}", $post_id, $post );
4819  
4820          /**
4821           * Fires once an existing post has been updated.
4822           *
4823           * @since 1.2.0
4824           *
4825           * @param int     $post_id Post ID.
4826           * @param WP_Post $post    Post object.
4827           */
4828          do_action( 'edit_post', $post_id, $post );
4829  
4830          $post_after = get_post( $post_id );
4831  
4832          /**
4833           * Fires once an existing post has been updated.
4834           *
4835           * @since 3.0.0
4836           *
4837           * @param int     $post_id      Post ID.
4838           * @param WP_Post $post_after   Post object following the update.
4839           * @param WP_Post $post_before  Post object before the update.
4840           */
4841          do_action( 'post_updated', $post_id, $post_after, $post_before );
4842      }
4843  
4844      /**
4845       * Fires once a post has been saved.
4846       *
4847       * The dynamic portion of the hook name, `$post->post_type`, refers to
4848       * the post type slug.
4849       *
4850       * Possible hook names include:
4851       *
4852       *  - `save_post_post`
4853       *  - `save_post_page`
4854       *
4855       * @since 3.7.0
4856       *
4857       * @param int     $post_id Post ID.
4858       * @param WP_Post $post    Post object.
4859       * @param bool    $update  Whether this is an existing post being updated.
4860       */
4861      do_action( "save_post_{$post->post_type}", $post_id, $post, $update );
4862  
4863      /**
4864       * Fires once a post has been saved.
4865       *
4866       * @since 1.5.0
4867       *
4868       * @param int     $post_id Post ID.
4869       * @param WP_Post $post    Post object.
4870       * @param bool    $update  Whether this is an existing post being updated.
4871       */
4872      do_action( 'save_post', $post_id, $post, $update );
4873  
4874      /**
4875       * Fires once a post has been saved.
4876       *
4877       * @since 2.0.0
4878       *
4879       * @param int     $post_id Post ID.
4880       * @param WP_Post $post    Post object.
4881       * @param bool    $update  Whether this is an existing post being updated.
4882       */
4883      do_action( 'wp_insert_post', $post_id, $post, $update );
4884  
4885      if ( $fire_after_hooks ) {
4886          wp_after_insert_post( $post, $update, $post_before );
4887      }
4888  
4889      return $post_id;
4890  }
4891  
4892  /**
4893   * Updates a post with new post data.
4894   *
4895   * The date does not have to be set for drafts. You can set the date and it will
4896   * not be overridden.
4897   *
4898   * @since 1.0.0
4899   * @since 3.5.0 Added the `$wp_error` parameter to allow a WP_Error to be returned on failure.
4900   * @since 5.6.0 Added the `$fire_after_hooks` parameter.
4901   *
4902   * @param array|object $postarr          Optional. Post data. Arrays are expected to be escaped,
4903   *                                       objects are not. See wp_insert_post() for accepted arguments.
4904   *                                       Default array.
4905   * @param bool         $wp_error         Optional. Whether to return a WP_Error on failure. Default false.
4906   * @param bool         $fire_after_hooks Optional. Whether to fire the after insert hooks. Default true.
4907   * @return int|WP_Error The post ID on success. The value 0 or WP_Error on failure.
4908   */
4909  function wp_update_post( $postarr = array(), $wp_error = false, $fire_after_hooks = true ) {
4910      if ( is_object( $postarr ) ) {
4911          // Non-escaped post was passed.
4912          $postarr = get_object_vars( $postarr );
4913          $postarr = wp_slash( $postarr );
4914      }
4915  
4916      // First, get all of the original fields.
4917      $post = get_post( $postarr['ID'], ARRAY_A );
4918  
4919      if ( is_null( $post ) ) {
4920          if ( $wp_error ) {
4921              return new WP_Error( 'invalid_post', __( 'Invalid post ID.' ) );
4922          }
4923          return 0;
4924      }
4925  
4926      // Escape data pulled from DB.
4927      $post = wp_slash( $post );
4928  
4929      // Passed post category list overwrites existing category list if not empty.
4930      if ( isset( $postarr['post_category'] ) && is_array( $postarr['post_category'] )
4931          && count( $postarr['post_category'] ) > 0
4932      ) {
4933          $post_cats = $postarr['post_category'];
4934      } else {
4935          $post_cats = $post['post_category'];
4936      }
4937  
4938      // Drafts shouldn't be assigned a date unless explicitly done so by the user.
4939      if ( isset( $post['post_status'] )
4940          && in_array( $post['post_status'], array( 'draft', 'pending', 'auto-draft' ), true )
4941          && empty( $postarr['edit_date'] ) && ( '0000-00-00 00:00:00' === $post['post_date_gmt'] )
4942      ) {
4943          $clear_date = true;
4944      } else {
4945          $clear_date = false;
4946      }
4947  
4948      // Merge old and new fields with new fields overwriting old ones.
4949      $postarr                  = array_merge( $post, $postarr );
4950      $postarr['post_category'] = $post_cats;
4951      if ( $clear_date ) {
4952          $postarr['post_date']     = current_time( 'mysql' );
4953          $postarr['post_date_gmt'] = '';
4954      }
4955  
4956      if ( 'attachment' === $postarr['post_type'] ) {
4957          return wp_insert_attachment( $postarr, false, 0, $wp_error );
4958      }
4959  
4960      // Discard 'tags_input' parameter if it's the same as existing post tags.
4961      if ( isset( $postarr['tags_input'] ) && is_object_in_taxonomy( $postarr['post_type'], 'post_tag' ) ) {
4962          $tags      = get_the_terms( $postarr['ID'], 'post_tag' );
4963          $tag_names = array();
4964  
4965          if ( $tags && ! is_wp_error( $tags ) ) {
4966              $tag_names = wp_list_pluck( $tags, 'name' );
4967          }
4968  
4969          if ( $postarr['tags_input'] === $tag_names ) {
4970              unset( $postarr['tags_input'] );
4971          }
4972      }
4973  
4974      return wp_insert_post( $postarr, $wp_error, $fire_after_hooks );
4975  }
4976  
4977  /**
4978   * Publishes a post by transitioning the post status.
4979   *
4980   * @since 2.1.0
4981   *
4982   * @global wpdb $wpdb WordPress database abstraction object.
4983   *
4984   * @param int|WP_Post $post Post ID or post object.
4985   */
4986  function wp_publish_post( $post ) {
4987      global $wpdb;
4988  
4989      $post = get_post( $post );
4990  
4991      if ( ! $post ) {
4992          return;
4993      }
4994  
4995      if ( 'publish' === $post->post_status ) {
4996          return;
4997      }
4998  
4999      $post_before = get_post( $post->ID );
5000  
5001      // Ensure at least one term is applied for taxonomies with a default term.
5002      foreach ( get_object_taxonomies( $post->post_type, 'object' ) as $taxonomy => $tax_object ) {
5003          // Skip taxonomy if no default term is set.
5004          if (
5005              'category' !== $taxonomy &&
5006              empty( $tax_object->default_term )
5007          ) {
5008              continue;
5009          }
5010  
5011          // Do not modify previously set terms.
5012          if ( ! empty( get_the_terms( $post, $taxonomy ) ) ) {
5013              continue;
5014          }
5015  
5016          if ( 'category' === $taxonomy ) {
5017              $default_term_id = (int) get_option( 'default_category', 0 );
5018          } else {
5019              $default_term_id = (int) get_option( 'default_term_' . $taxonomy, 0 );
5020          }
5021  
5022          if ( ! $default_term_id ) {
5023              continue;
5024          }
5025          wp_set_post_terms( $post->ID, array( $default_term_id ), $taxonomy );
5026      }
5027  
5028      $wpdb->update( $wpdb->posts, array( 'post_status' => 'publish' ), array( 'ID' => $post->ID ) );
5029  
5030      clean_post_cache( $post->ID );
5031  
5032      $old_status        = $post->post_status;
5033      $post->post_status = 'publish';
5034      wp_transition_post_status( 'publish', $old_status, $post );
5035  
5036      /** This action is documented in wp-includes/post.php */
5037      do_action( "edit_post_{$post->post_type}", $post->ID, $post );
5038  
5039      /** This action is documented in wp-includes/post.php */
5040      do_action( 'edit_post', $post->ID, $post );
5041  
5042      /** This action is documented in wp-includes/post.php */
5043      do_action( "save_post_{$post->post_type}", $post->ID, $post, true );
5044  
5045      /** This action is documented in wp-includes/post.php */
5046      do_action( 'save_post', $post->ID, $post, true );
5047  
5048      /** This action is documented in wp-includes/post.php */
5049      do_action( 'wp_insert_post', $post->ID, $post, true );
5050  
5051      wp_after_insert_post( $post, true, $post_before );
5052  }
5053  
5054  /**
5055   * Publishes future post and make sure post ID has future post status.
5056   *
5057   * Invoked by cron 'publish_future_post' event. This safeguard prevents cron
5058   * from publishing drafts, etc.
5059   *
5060   * @since 2.5.0
5061   *
5062   * @param int|WP_Post $post Post ID or post object.
5063   */
5064  function check_and_publish_future_post( $post ) {
5065      $post = get_post( $post );
5066  
5067      if ( ! $post ) {
5068          return;
5069      }
5070  
5071      if ( 'future' !== $post->post_status ) {
5072          return;
5073      }
5074  
5075      $time = strtotime( $post->post_date_gmt . ' GMT' );
5076  
5077      // Uh oh, someone jumped the gun!
5078      if ( $time > time() ) {
5079          wp_clear_scheduled_hook( 'publish_future_post', array( $post->ID ) ); // Clear anything else in the system.
5080          wp_schedule_single_event( $time, 'publish_future_post', array( $post->ID ) );
5081          return;
5082      }
5083  
5084      // wp_publish_post() returns no meaningful value.
5085      wp_publish_post( $post->ID );
5086  }
5087  
5088  /**
5089   * Uses wp_checkdate to return a valid Gregorian-calendar value for post_date.
5090   * If post_date is not provided, this first checks post_date_gmt if provided,
5091   * then falls back to use the current time.
5092   *
5093   * For back-compat purposes in wp_insert_post, an empty post_date and an invalid
5094   * post_date_gmt will continue to return '1970-01-01 00:00:00' rather than false.
5095   *
5096   * @since 5.7.0
5097   *
5098   * @param string $post_date     The date in mysql format (`Y-m-d H:i:s`).
5099   * @param string $post_date_gmt The GMT date in mysql format (`Y-m-d H:i:s`).
5100   * @return string|false A valid Gregorian-calendar date string, or false on failure.
5101   */
5102  function wp_resolve_post_date( $post_date = '', $post_date_gmt = '' ) {
5103      // If the date is empty, set the date to now.
5104      if ( empty( $post_date ) || '0000-00-00 00:00:00' === $post_date ) {
5105          if ( empty( $post_date_gmt ) || '0000-00-00 00:00:00' === $post_date_gmt ) {
5106              $post_date = current_time( 'mysql' );
5107          } else {
5108              $post_date = get_date_from_gmt( $post_date_gmt );
5109          }
5110      }
5111  
5112      // Validate the date.
5113      $month = (int) substr( $post_date, 5, 2 );
5114      $day   = (int) substr( $post_date, 8, 2 );
5115      $year  = (int) substr( $post_date, 0, 4 );
5116  
5117      $valid_date = wp_checkdate( $month, $day, $year, $post_date );
5118  
5119      if ( ! $valid_date ) {
5120          return false;
5121      }
5122      return $post_date;
5123  }
5124  
5125  /**
5126   * Computes a unique slug for the post, when given the desired slug and some post details.
5127   *
5128   * @since 2.8.0
5129   *
5130   * @global wpdb       $wpdb       WordPress database abstraction object.
5131   * @global WP_Rewrite $wp_rewrite WordPress rewrite component.
5132   *
5133   * @param string $slug        The desired slug (post_name).
5134   * @param int    $post_id     Post ID.
5135   * @param string $post_status No uniqueness checks are made if the post is still draft or pending.
5136   * @param string $post_type   Post type.
5137   * @param int    $post_parent Post parent ID.
5138   * @return string Unique slug for the post, based on $post_name (with a -1, -2, etc. suffix)
5139   */
5140  function wp_unique_post_slug( $slug, $post_id, $post_status, $post_type, $post_parent ) {
5141      if ( in_array( $post_status, array( 'draft', 'pending', 'auto-draft' ), true )
5142          || ( 'inherit' === $post_status && 'revision' === $post_type ) || 'user_request' === $post_type
5143      ) {
5144          return $slug;
5145      }
5146  
5147      /**
5148       * Filters the post slug before it is generated to be unique.
5149       *
5150       * Returning a non-null value will short-circuit the
5151       * unique slug generation, returning the passed value instead.
5152       *
5153       * @since 5.1.0
5154       *
5155       * @param string|null $override_slug Short-circuit return value.
5156       * @param string      $slug          The desired slug (post_name).
5157       * @param int         $post_id       Post ID.
5158       * @param string      $post_status   The post status.
5159       * @param string      $post_type     Post type.
5160       * @param int         $post_parent   Post parent ID.
5161       */
5162      $override_slug = apply_filters( 'pre_wp_unique_post_slug', null, $slug, $post_id, $post_status, $post_type, $post_parent );
5163      if ( null !== $override_slug ) {
5164          return $override_slug;
5165      }
5166  
5167      global $wpdb, $wp_rewrite;
5168  
5169      $original_slug = $slug;
5170  
5171      $feeds = $wp_rewrite->feeds;
5172      if ( ! is_array( $feeds ) ) {
5173          $feeds = array();
5174      }
5175  
5176      if ( 'attachment' === $post_type ) {
5177          // Attachment slugs must be unique across all types.
5178          $check_sql       = "SELECT post_name FROM $wpdb->posts WHERE post_name = %s AND ID != %d LIMIT 1";
5179          $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $slug, $post_id ) );
5180  
5181          /**
5182           * Filters whether the post slug would make a bad attachment slug.
5183           *
5184           * @since 3.1.0
5185           *
5186           * @param bool   $bad_slug Whether the slug would be bad as an attachment slug.
5187           * @param string $slug     The post slug.
5188           */
5189          $is_bad_attachment_slug = apply_filters( 'wp_unique_post_slug_is_bad_attachment_slug', false, $slug );
5190  
5191          if ( $post_name_check
5192              || in_array( $slug, $feeds, true ) || 'embed' === $slug
5193              || $is_bad_attachment_slug
5194          ) {
5195              $suffix = 2;
5196              do {
5197                  $alt_post_name   = _truncate_post_slug( $slug, 200 - ( strlen( $suffix ) + 1 ) ) . "-$suffix";
5198                  $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $alt_post_name, $post_id ) );
5199                  ++$suffix;
5200              } while ( $post_name_check );
5201              $slug = $alt_post_name;
5202          }
5203      } elseif ( is_post_type_hierarchical( $post_type ) ) {
5204          if ( 'nav_menu_item' === $post_type ) {
5205              return $slug;
5206          }
5207  
5208          /*
5209           * Page slugs must be unique within their own trees. Pages are in a separate
5210           * namespace than posts so page slugs are allowed to overlap post slugs.
5211           */
5212          $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";
5213          $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $slug, $post_type, $post_id, $post_parent ) );
5214  
5215          /**
5216           * Filters whether the post slug would make a bad hierarchical post slug.
5217           *
5218           * @since 3.1.0
5219           *
5220           * @param bool   $bad_slug    Whether the post slug would be bad in a hierarchical post context.
5221           * @param string $slug        The post slug.
5222           * @param string $post_type   Post type.
5223           * @param int    $post_parent Post parent ID.
5224           */
5225          $is_bad_hierarchical_slug = apply_filters( 'wp_unique_post_slug_is_bad_hierarchical_slug', false, $slug, $post_type, $post_parent );
5226  
5227          if ( $post_name_check
5228              || in_array( $slug, $feeds, true ) || 'embed' === $slug
5229              || preg_match( "@^($wp_rewrite->pagination_base)?\d+$@", $slug )
5230              || $is_bad_hierarchical_slug
5231          ) {
5232              $suffix = 2;
5233              do {
5234                  $alt_post_name   = _truncate_post_slug( $slug, 200 - ( strlen( $suffix ) + 1 ) ) . "-$suffix";
5235                  $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $alt_post_name, $post_type, $post_id, $post_parent ) );
5236                  ++$suffix;
5237              } while ( $post_name_check );
5238              $slug = $alt_post_name;
5239          }
5240      } else {
5241          // Post slugs must be unique across all posts.
5242          $check_sql       = "SELECT post_name FROM $wpdb->posts WHERE post_name = %s AND post_type = %s AND ID != %d LIMIT 1";
5243          $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $slug, $post_type, $post_id ) );
5244  
5245          $post = get_post( $post_id );
5246  
5247          // Prevent new post slugs that could result in URLs that conflict with date archives.
5248          $conflicts_with_date_archive = false;
5249          if ( 'post' === $post_type && ( ! $post || $post->post_name !== $slug ) && preg_match( '/^[0-9]+$/', $slug ) ) {
5250              $slug_num = (int) $slug;
5251  
5252              if ( $slug_num ) {
5253                  $permastructs   = array_values( array_filter( explode( '/', get_option( 'permalink_structure' ) ) ) );
5254                  $postname_index = array_search( '%postname%', $permastructs, true );
5255  
5256                  /*
5257                  * Potential date clashes are as follows:
5258                  *
5259                  * - Any integer in the first permastruct position could be a year.
5260                  * - An integer between 1 and 12 that follows 'year' conflicts with 'monthnum'.
5261                  * - An integer between 1 and 31 that follows 'monthnum' conflicts with 'day'.
5262                  */
5263                  if ( 0 === $postname_index ||
5264                      ( $postname_index && '%year%' === $permastructs[ $postname_index - 1 ] && 13 > $slug_num ) ||
5265                      ( $postname_index && '%monthnum%' === $permastructs[ $postname_index - 1 ] && 32 > $slug_num )
5266                  ) {
5267                      $conflicts_with_date_archive = true;
5268                  }
5269              }
5270          }
5271  
5272          /**
5273           * Filters whether the post slug would be bad as a flat slug.
5274           *
5275           * @since 3.1.0
5276           *
5277           * @param bool   $bad_slug  Whether the post slug would be bad as a flat slug.
5278           * @param string $slug      The post slug.
5279           * @param string $post_type Post type.
5280           */
5281          $is_bad_flat_slug = apply_filters( 'wp_unique_post_slug_is_bad_flat_slug', false, $slug, $post_type );
5282  
5283          if ( $post_name_check
5284              || in_array( $slug, $feeds, true ) || 'embed' === $slug
5285              || $conflicts_with_date_archive
5286              || $is_bad_flat_slug
5287          ) {
5288              $suffix = 2;
5289              do {
5290                  $alt_post_name   = _truncate_post_slug( $slug, 200 - ( strlen( $suffix ) + 1 ) ) . "-$suffix";
5291                  $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $alt_post_name, $post_type, $post_id ) );
5292                  ++$suffix;
5293              } while ( $post_name_check );
5294              $slug = $alt_post_name;
5295          }
5296      }
5297  
5298      /**
5299       * Filters the unique post slug.
5300       *
5301       * @since 3.3.0
5302       *
5303       * @param string $slug          The post slug.
5304       * @param int    $post_id       Post ID.
5305       * @param string $post_status   The post status.
5306       * @param string $post_type     Post type.
5307       * @param int    $post_parent   Post parent ID
5308       * @param string $original_slug The original post slug.
5309       */
5310      return apply_filters( 'wp_unique_post_slug', $slug, $post_id, $post_status, $post_type, $post_parent, $original_slug );
5311  }
5312  
5313  /**
5314   * Truncates a post slug.
5315   *
5316   * @since 3.6.0
5317   * @access private
5318   *
5319   * @see utf8_uri_encode()
5320   *
5321   * @param string $slug   The slug to truncate.
5322   * @param int    $length Optional. Max length of the slug. Default 200 (characters).
5323   * @return string The truncated slug.
5324   */
5325  function _truncate_post_slug( $slug, $length = 200 ) {
5326      if ( strlen( $slug ) > $length ) {
5327          $decoded_slug = urldecode( $slug );
5328          if ( $decoded_slug === $slug ) {
5329              $slug = substr( $slug, 0, $length );
5330          } else {
5331              $slug = utf8_uri_encode( $decoded_slug, $length, true );
5332          }
5333      }
5334  
5335      return rtrim( $slug, '-' );
5336  }
5337  
5338  /**
5339   * Adds tags to a post.
5340   *
5341   * @see wp_set_post_tags()
5342   *
5343   * @since 2.3.0
5344   *
5345   * @param int          $post_id Optional. The Post ID. Does not default to the ID of the global $post.
5346   * @param string|array $tags    Optional. An array of tags to set for the post, or a string of tags
5347   *                              separated by commas. Default empty.
5348   * @return array|false|WP_Error Array of affected term IDs. WP_Error or false on failure.
5349   */
5350  function wp_add_post_tags( $post_id = 0, $tags = '' ) {
5351      return wp_set_post_tags( $post_id, $tags, true );
5352  }
5353  
5354  /**
5355   * Sets the tags for a post.
5356   *
5357   * @since 2.3.0
5358   *
5359   * @see wp_set_object_terms()
5360   *
5361   * @param int          $post_id Optional. The Post ID. Does not default to the ID of the global $post.
5362   * @param string|array $tags    Optional. An array of tags to set for the post, or a string of tags
5363   *                              separated by commas. Default empty.
5364   * @param bool         $append  Optional. If true, don't delete existing tags, just add on. If false,
5365   *                              replace the tags with the new tags. Default false.
5366   * @return array|false|WP_Error Array of term taxonomy IDs of affected terms. WP_Error or false on failure.
5367   */
5368  function wp_set_post_tags( $post_id = 0, $tags = '', $append = false ) {
5369      return wp_set_post_terms( $post_id, $tags, 'post_tag', $append );
5370  }
5371  
5372  /**
5373   * Sets the terms for a post.
5374   *
5375   * @since 2.8.0
5376   *
5377   * @see wp_set_object_terms()
5378   *
5379   * @param int          $post_id  Optional. The Post ID. Does not default to the ID of the global $post.
5380   * @param string|array $terms    Optional. An array of terms to set for the post, or a string of terms
5381   *                               separated by commas. Hierarchical taxonomies must always pass IDs rather
5382   *                               than names so that children with the same names but different parents
5383   *                               aren't confused. Default empty.
5384   * @param string       $taxonomy Optional. Taxonomy name. Default 'post_tag'.
5385   * @param bool         $append   Optional. If true, don't delete existing terms, just add on. If false,
5386   *                               replace the terms with the new terms. Default false.
5387   * @return array|false|WP_Error Array of term taxonomy IDs of affected terms. WP_Error or false on failure.
5388   */
5389  function wp_set_post_terms( $post_id = 0, $terms = '', $taxonomy = 'post_tag', $append = false ) {
5390      $post_id = (int) $post_id;
5391  
5392      if ( ! $post_id ) {
5393          return false;
5394      }
5395  
5396      if ( empty( $terms ) ) {
5397          $terms = array();
5398      }
5399  
5400      if ( ! is_array( $terms ) ) {
5401          $comma = _x( ',', 'tag delimiter' );
5402          if ( ',' !== $comma ) {
5403              $terms = str_replace( $comma, ',', $terms );
5404          }
5405          $terms = explode( ',', trim( $terms, " \n\t\r\0\x0B," ) );
5406      }
5407  
5408      /*
5409       * Hierarchical taxonomies must always pass IDs rather than names so that
5410       * children with the same names but different parents aren't confused.
5411       */
5412      if ( is_taxonomy_hierarchical( $taxonomy ) ) {
5413          $terms = array_unique( array_map( 'intval', $terms ) );
5414      }
5415  
5416      return wp_set_object_terms( $post_id, $terms, $taxonomy, $append );
5417  }
5418  
5419  /**
5420   * Sets categories for a post.
5421   *
5422   * If no categories are provided, the default category is used.
5423   *
5424   * @since 2.1.0
5425   *
5426   * @param int       $post_id         Optional. The Post ID. Does not default to the ID
5427   *                                   of the global $post. Default 0.
5428   * @param int[]|int $post_categories Optional. List of category IDs, or the ID of a single category.
5429   *                                   Default empty array.
5430   * @param bool      $append          If true, don't delete existing categories, just add on.
5431   *                                   If false, replace the categories with the new categories.
5432   * @return array|false|WP_Error Array of term taxonomy IDs of affected categories. WP_Error or false on failure.
5433   */
5434  function wp_set_post_categories( $post_id = 0, $post_categories = array(), $append = false ) {
5435      $post_id     = (int) $post_id;
5436      $post_type   = get_post_type( $post_id );
5437      $post_status = get_post_status( $post_id );
5438  
5439      // If $post_categories isn't already an array, make it one.
5440      $post_categories = (array) $post_categories;
5441  
5442      if ( empty( $post_categories ) ) {
5443          /**
5444           * Filters post types (in addition to 'post') that require a default category.
5445           *
5446           * @since 5.5.0
5447           *
5448           * @param string[] $post_types An array of post type names. Default empty array.
5449           */
5450          $default_category_post_types = apply_filters( 'default_category_post_types', array() );
5451  
5452          // Regular posts always require a default category.
5453          $default_category_post_types = array_merge( $default_category_post_types, array( 'post' ) );
5454  
5455          if ( in_array( $post_type, $default_category_post_types, true )
5456              && is_object_in_taxonomy( $post_type, 'category' )
5457              && 'auto-draft' !== $post_status
5458          ) {
5459              $post_categories = array( get_option( 'default_category' ) );
5460              $append          = false;
5461          } else {
5462              $post_categories = array();
5463          }
5464      } elseif ( 1 === count( $post_categories ) && '' === reset( $post_categories ) ) {
5465          return true;
5466      }
5467  
5468      return wp_set_post_terms( $post_id, $post_categories, 'category', $append );
5469  }
5470  
5471  /**
5472   * Fires actions related to the transitioning of a post's status.
5473   *
5474   * When a post is saved, the post status is "transitioned" from one status to another,
5475   * though this does not always mean the status has actually changed before and after
5476   * the save. This function fires a number of action hooks related to that transition:
5477   * the generic {@see 'transition_post_status'} action, as well as the dynamic hooks
5478   * {@see '$old_status_to_$new_status'} and {@see '$new_status_$post->post_type'}. Note
5479   * that the function does not transition the post object in the database.
5480   *
5481   * For instance: When publishing a post for the first time, the post status may transition
5482   * from 'draft' – or some other status – to 'publish'. However, if a post is already
5483   * published and is simply being updated, the "old" and "new" statuses may both be 'publish'
5484   * before and after the transition.
5485   *
5486   * @since 2.3.0
5487   *
5488   * @param string  $new_status Transition to this post status.
5489   * @param string  $old_status Previous post status.
5490   * @param WP_Post $post Post data.
5491   */
5492  function wp_transition_post_status( $new_status, $old_status, $post ) {
5493      /**
5494       * Fires when a post is transitioned from one status to another.
5495       *
5496       * @since 2.3.0
5497       *
5498       * @param string  $new_status New post status.
5499       * @param string  $old_status Old post status.
5500       * @param WP_Post $post       Post object.
5501       */
5502      do_action( 'transition_post_status', $new_status, $old_status, $post );
5503  
5504      /**
5505       * Fires when a post is transitioned from one status to another.
5506       *
5507       * The dynamic portions of the hook name, `$new_status` and `$old_status`,
5508       * refer to the old and new post statuses, respectively.
5509       *
5510       * Possible hook names include:
5511       *
5512       *  - `draft_to_publish`
5513       *  - `publish_to_trash`
5514       *  - `pending_to_draft`
5515       *
5516       * @since 2.3.0
5517       *
5518       * @param WP_Post $post Post object.
5519       */
5520      do_action( "{$old_status}_to_{$new_status}", $post );
5521  
5522      /**
5523       * Fires when a post is transitioned from one status to another.
5524       *
5525       * The dynamic portions of the hook name, `$new_status` and `$post->post_type`,
5526       * refer to the new post status and post type, respectively.
5527       *
5528       * Possible hook names include:
5529       *
5530       *  - `draft_post`
5531       *  - `future_post`
5532       *  - `pending_post`
5533       *  - `private_post`
5534       *  - `publish_post`
5535       *  - `trash_post`
5536       *  - `draft_page`
5537       *  - `future_page`
5538       *  - `pending_page`
5539       *  - `private_page`
5540       *  - `publish_page`
5541       *  - `trash_page`
5542       *  - `publish_attachment`
5543       *  - `trash_attachment`
5544       *
5545       * Please note: When this action is hooked using a particular post status (like
5546       * 'publish', as `publish_{$post->post_type}`), it will fire both when a post is
5547       * first transitioned to that status from something else, as well as upon
5548       * subsequent post updates (old and new status are both the same).
5549       *
5550       * Therefore, if you are looking to only fire a callback when a post is first
5551       * transitioned to a status, use the {@see 'transition_post_status'} hook instead.
5552       *
5553       * @since 2.3.0
5554       * @since 5.9.0 Added `$old_status` parameter.
5555       *
5556       * @param int     $post_id    Post ID.
5557       * @param WP_Post $post       Post object.
5558       * @param string  $old_status Old post status.
5559       */
5560      do_action( "{$new_status}_{$post->post_type}", $post->ID, $post, $old_status );
5561  }
5562  
5563  /**
5564   * Fires actions after a post, its terms and meta data has been saved.
5565   *
5566   * @since 5.6.0
5567   *
5568   * @param int|WP_Post  $post        The post ID or object that has been saved.
5569   * @param bool         $update      Whether this is an existing post being updated.
5570   * @param null|WP_Post $post_before Null for new posts, the WP_Post object prior
5571   *                                  to the update for updated posts.
5572   */
5573  function wp_after_insert_post( $post, $update, $post_before ) {
5574      $post = get_post( $post );
5575  
5576      if ( ! $post ) {
5577          return;
5578      }
5579  
5580      $post_id = $post->ID;
5581  
5582      /**
5583       * Fires once a post, its terms and meta data has been saved.
5584       *
5585       * @since 5.6.0
5586       *
5587       * @param int          $post_id     Post ID.
5588       * @param WP_Post      $post        Post object.
5589       * @param bool         $update      Whether this is an existing post being updated.
5590       * @param null|WP_Post $post_before Null for new posts, the WP_Post object prior
5591       *                                  to the update for updated posts.
5592       */
5593      do_action( 'wp_after_insert_post', $post_id, $post, $update, $post_before );
5594  }
5595  
5596  //
5597  // Comment, trackback, and pingback functions.
5598  //
5599  
5600  /**
5601   * Adds a URL to those already pinged.
5602   *
5603   * @since 1.5.0
5604   * @since 4.7.0 `$post` can be a WP_Post object.
5605   * @since 4.7.0 `$uri` can be an array of URIs.
5606   *
5607   * @global wpdb $wpdb WordPress database abstraction object.
5608   *
5609   * @param int|WP_Post  $post Post ID or post object.
5610   * @param string|array $uri  Ping URI or array of URIs.
5611   * @return int|false How many rows were updated.
5612   */
5613  function add_ping( $post, $uri ) {
5614      global $wpdb;
5615  
5616      $post = get_post( $post );
5617  
5618      if ( ! $post ) {
5619          return false;
5620      }
5621  
5622      $pung = trim( $post->pinged );
5623      $pung = preg_split( '/\s/', $pung );
5624  
5625      if ( is_array( $uri ) ) {
5626          $pung = array_merge( $pung, $uri );
5627      } else {
5628          $pung[] = $uri;
5629      }
5630      $new = implode( "\n", $pung );
5631  
5632      /**
5633       * Filters the new ping URL to add for the given post.
5634       *
5635       * @since 2.0.0
5636       *
5637       * @param string $new New ping URL to add.
5638       */
5639      $new = apply_filters( 'add_ping', $new );
5640  
5641      $return = $wpdb->update( $wpdb->posts, array( 'pinged' => $new ), array( 'ID' => $post->ID ) );
5642      clean_post_cache( $post->ID );
5643      return $return;
5644  }
5645  
5646  /**
5647   * Retrieves enclosures already enclosed for a post.
5648   *
5649   * @since 1.5.0
5650   *
5651   * @param int $post_id Post ID.
5652   * @return string[] Array of enclosures for the given post.
5653   */
5654  function get_enclosed( $post_id ) {
5655      $custom_fields = get_post_custom( $post_id );
5656      $pung          = array();
5657      if ( ! is_array( $custom_fields ) ) {
5658          return $pung;
5659      }
5660  
5661      foreach ( $custom_fields as $key => $val ) {
5662          if ( 'enclosure' !== $key || ! is_array( $val ) ) {
5663              continue;
5664          }
5665          foreach ( $val as $enc ) {
5666              $enclosure = explode( "\n", $enc );
5667              $pung[]    = trim( $enclosure[0] );
5668          }
5669      }
5670  
5671      /**
5672       * Filters the list of enclosures already enclosed for the given post.
5673       *
5674       * @since 2.0.0
5675       *
5676       * @param string[] $pung    Array of enclosures for the given post.
5677       * @param int      $post_id Post ID.
5678       */
5679      return apply_filters( 'get_enclosed', $pung, $post_id );
5680  }
5681  
5682  /**
5683   * Retrieves URLs already pinged for a post.
5684   *
5685   * @since 1.5.0
5686   *
5687   * @since 4.7.0 `$post` can be a WP_Post object.
5688   *
5689   * @param int|WP_Post $post Post ID or object.
5690   * @return string[]|false Array of URLs already pinged for the given post, false if the post is not found.
5691   */
5692  function get_pung( $post ) {
5693      $post = get_post( $post );
5694  
5695      if ( ! $post ) {
5696          return false;
5697      }
5698  
5699      $pung = trim( $post->pinged );
5700      $pung = preg_split( '/\s/', $pung );
5701  
5702      /**
5703       * Filters the list of already-pinged URLs for the given post.
5704       *
5705       * @since 2.0.0
5706       *
5707       * @param string[] $pung Array of URLs already pinged for the given post.
5708       */
5709      return apply_filters( 'get_pung', $pung );
5710  }
5711  
5712  /**
5713   * Retrieves URLs that need to be pinged.
5714   *
5715   * @since 1.5.0
5716   * @since 4.7.0 `$post` can be a WP_Post object.
5717   *
5718   * @param int|WP_Post $post Post ID or post object.
5719   * @return string[]|false List of URLs yet to ping.
5720   */
5721  function get_to_ping( $post ) {
5722      $post = get_post( $post );
5723  
5724      if ( ! $post ) {
5725          return false;
5726      }
5727  
5728      $to_ping = sanitize_trackback_urls( $post->to_ping );
5729      $to_ping = preg_split( '/\s/', $to_ping, -1, PREG_SPLIT_NO_EMPTY );
5730  
5731      /**
5732       * Filters the list of URLs yet to ping for the given post.
5733       *
5734       * @since 2.0.0
5735       *
5736       * @param string[] $to_ping List of URLs yet to ping.
5737       */
5738      return apply_filters( 'get_to_ping', $to_ping );
5739  }
5740  
5741  /**
5742   * Does trackbacks for a list of URLs.
5743   *
5744   * @since 1.0.0
5745   *
5746   * @param string $tb_list Comma separated list of URLs.
5747   * @param int    $post_id Post ID.
5748   */
5749  function trackback_url_list( $tb_list, $post_id ) {
5750      if ( ! empty( $tb_list ) ) {
5751          // Get post data.
5752          $postdata = get_post( $post_id, ARRAY_A );
5753  
5754          // Form an excerpt.
5755          $excerpt = strip_tags( $postdata['post_excerpt'] ? $postdata['post_excerpt'] : $postdata['post_content'] );
5756  
5757          if ( strlen( $excerpt ) > 255 ) {
5758              $excerpt = substr( $excerpt, 0, 252 ) . '&hellip;';
5759          }
5760  
5761          $trackback_urls = explode( ',', $tb_list );
5762          foreach ( (array) $trackback_urls as $tb_url ) {
5763              $tb_url = trim( $tb_url );
5764              trackback( $tb_url, wp_unslash( $postdata['post_title'] ), $excerpt, $post_id );
5765          }
5766      }
5767  }
5768  
5769  //
5770  // Page functions.
5771  //
5772  
5773  /**
5774   * Gets a list of page IDs.
5775   *
5776   * @since 2.0.0
5777   *
5778   * @global wpdb $wpdb WordPress database abstraction object.
5779   *
5780   * @return string[] List of page IDs as strings.
5781   */
5782  function get_all_page_ids() {
5783      global $wpdb;
5784  
5785      $page_ids = wp_cache_get( 'all_page_ids', 'posts' );
5786      if ( ! is_array( $page_ids ) ) {
5787          $page_ids = $wpdb->get_col( "SELECT ID FROM $wpdb->posts WHERE post_type = 'page'" );
5788          wp_cache_add( 'all_page_ids', $page_ids, 'posts' );
5789      }
5790  
5791      return $page_ids;
5792  }
5793  
5794  /**
5795   * Retrieves page data given a page ID or page object.
5796   *
5797   * Use get_post() instead of get_page().
5798   *
5799   * @since 1.5.1
5800   * @deprecated 3.5.0 Use get_post()
5801   *
5802   * @param int|WP_Post $page   Page object or page ID. Passed by reference.
5803   * @param string      $output Optional. The required return type. One of OBJECT, ARRAY_A, or ARRAY_N, which
5804   *                            correspond to a WP_Post object, an associative array, or a numeric array,
5805   *                            respectively. Default OBJECT.
5806   * @param string      $filter Optional. How the return value should be filtered. Accepts 'raw',
5807   *                            'edit', 'db', 'display'. Default 'raw'.
5808   * @return WP_Post|array|null WP_Post or array on success, null on failure.
5809   */
5810  function get_page( $page, $output = OBJECT, $filter = 'raw' ) {
5811      return get_post( $page, $output, $filter );
5812  }
5813  
5814  /**
5815   * Retrieves a page given its path.
5816   *
5817   * @since 2.1.0
5818   *
5819   * @global wpdb $wpdb WordPress database abstraction object.
5820   *
5821   * @param string       $page_path Page path.
5822   * @param string       $output    Optional. The required return type. One of OBJECT, ARRAY_A, or ARRAY_N, which
5823   *                                correspond to a WP_Post object, an associative array, or a numeric array,
5824   *                                respectively. Default OBJECT.
5825   * @param string|array $post_type Optional. Post type or array of post types. Default 'page'.
5826   * @return WP_Post|array|null WP_Post (or array) on success, or null on failure.
5827   */
5828  function get_page_by_path( $page_path, $output = OBJECT, $post_type = 'page' ) {
5829      global $wpdb;
5830  
5831      $last_changed = wp_cache_get_last_changed( 'posts' );
5832  
5833      $hash      = md5( $page_path . serialize( $post_type ) );
5834      $cache_key = "get_page_by_path:$hash:$last_changed";
5835      $cached    = wp_cache_get( $cache_key, 'post-queries' );
5836      if ( false !== $cached ) {
5837          // Special case: '0' is a bad `$page_path`.
5838          if ( '0' === $cached || 0 === $cached ) {
5839              return;
5840          } else {
5841              return get_post( $cached, $output );
5842          }
5843      }
5844  
5845      $page_path     = rawurlencode( urldecode( $page_path ) );
5846      $page_path     = str_replace( '%2F', '/', $page_path );
5847      $page_path     = str_replace( '%20', ' ', $page_path );
5848      $parts         = explode( '/', trim( $page_path, '/' ) );
5849      $parts         = array_map( 'sanitize_title_for_query', $parts );
5850      $escaped_parts = esc_sql( $parts );
5851  
5852      $in_string = "'" . implode( "','", $escaped_parts ) . "'";
5853  
5854      if ( is_array( $post_type ) ) {
5855          $post_types = $post_type;
5856      } else {
5857          $post_types = array( $post_type, 'attachment' );
5858      }
5859  
5860      $post_types          = esc_sql( $post_types );
5861      $post_type_in_string = "'" . implode( "','", $post_types ) . "'";
5862      $sql                 = "
5863          SELECT ID, post_name, post_parent, post_type
5864          FROM $wpdb->posts
5865          WHERE post_name IN ($in_string)
5866          AND post_type IN ($post_type_in_string)
5867      ";
5868  
5869      $pages = $wpdb->get_results( $sql, OBJECT_K );
5870  
5871      $revparts = array_reverse( $parts );
5872  
5873      $foundid = 0;
5874      foreach ( (array) $pages as $page ) {
5875          if ( $page->post_name == $revparts[0] ) {
5876              $count = 0;
5877              $p     = $page;
5878  
5879              /*
5880               * Loop through the given path parts from right to left,
5881               * ensuring each matches the post ancestry.
5882               */
5883              while ( 0 != $p->post_parent && isset( $pages[ $p->post_parent ] ) ) {
5884                  ++$count;
5885                  $parent = $pages[ $p->post_parent ];
5886                  if ( ! isset( $revparts[ $count ] ) || $parent->post_name != $revparts[ $count ] ) {
5887                      break;
5888                  }
5889                  $p = $parent;
5890              }
5891  
5892              if ( 0 == $p->post_parent && count( $revparts ) === $count + 1 && $p->post_name == $revparts[ $count ] ) {
5893                  $foundid = $page->ID;
5894                  if ( $page->post_type == $post_type ) {
5895                      break;
5896                  }
5897              }
5898          }
5899      }
5900  
5901      // We cache misses as well as hits.
5902      wp_cache_set( $cache_key, $foundid, 'post-queries' );
5903  
5904      if ( $foundid ) {
5905          return get_post( $foundid, $output );
5906      }
5907  
5908      return null;
5909  }
5910  
5911  /**
5912   * Identifies descendants of a given page ID in a list of page objects.
5913   *
5914   * Descendants are identified from the `$pages` array passed to the function. No database queries are performed.
5915   *
5916   * @since 1.5.1
5917   *
5918   * @param int       $page_id Page ID.
5919   * @param WP_Post[] $pages   List of page objects from which descendants should be identified.
5920   * @return WP_Post[] List of page children.
5921   */
5922  function get_page_children( $page_id, $pages ) {
5923      // Build a hash of ID -> children.
5924      $children = array();
5925      foreach ( (array) $pages as $page ) {
5926          $children[ (int) $page->post_parent ][] = $page;
5927      }
5928  
5929      $page_list = array();
5930  
5931      // Start the search by looking at immediate children.
5932      if ( isset( $children[ $page_id ] ) ) {
5933          // Always start at the end of the stack in order to preserve original `$pages` order.
5934          $to_look = array_reverse( $children[ $page_id ] );
5935  
5936          while ( $to_look ) {
5937              $p           = array_pop( $to_look );
5938              $page_list[] = $p;
5939              if ( isset( $children[ $p->ID ] ) ) {
5940                  foreach ( array_reverse( $children[ $p->ID ] ) as $child ) {
5941                      // Append to the `$to_look` stack to descend the tree.
5942                      $to_look[] = $child;
5943                  }
5944              }
5945          }
5946      }
5947  
5948      return $page_list;
5949  }
5950  
5951  /**
5952   * Orders the pages with children under parents in a flat list.
5953   *
5954   * It uses auxiliary structure to hold parent-children relationships and
5955   * runs in O(N) complexity
5956   *
5957   * @since 2.0.0
5958   *
5959   * @param WP_Post[] $pages   Posts array (passed by reference).
5960   * @param int       $page_id Optional. Parent page ID. Default 0.
5961   * @return string[] Array of post names keyed by ID and arranged by hierarchy. Children immediately follow their parents.
5962   */
5963  function get_page_hierarchy( &$pages, $page_id = 0 ) {
5964      if ( empty( $pages ) ) {
5965          return array();
5966      }
5967  
5968      $children = array();
5969      foreach ( (array) $pages as $p ) {
5970          $parent_id                = (int) $p->post_parent;
5971          $children[ $parent_id ][] = $p;
5972      }
5973  
5974      $result = array();
5975      _page_traverse_name( $page_id, $children, $result );
5976  
5977      return $result;
5978  }
5979  
5980  /**
5981   * Traverses and return all the nested children post names of a root page.
5982   *
5983   * $children contains parent-children relations
5984   *
5985   * @since 2.9.0
5986   * @access private
5987   *
5988   * @see _page_traverse_name()
5989   *
5990   * @param int      $page_id  Page ID.
5991   * @param array    $children Parent-children relations (passed by reference).
5992   * @param string[] $result   Array of page names keyed by ID (passed by reference).
5993   */
5994  function _page_traverse_name( $page_id, &$children, &$result ) {
5995      if ( isset( $children[ $page_id ] ) ) {
5996          foreach ( (array) $children[ $page_id ] as $child ) {
5997              $result[ $child->ID ] = $child->post_name;
5998              _page_traverse_name( $child->ID, $children, $result );
5999          }
6000      }
6001  }
6002  
6003  /**
6004   * Builds the URI path for a page.
6005   *
6006   * Sub pages will be in the "directory" under the parent page post name.
6007   *
6008   * @since 1.5.0
6009   * @since 4.6.0 The `$page` parameter was made optional.
6010   *
6011   * @param WP_Post|object|int $page Optional. Page ID or WP_Post object. Default is global $post.
6012   * @return string|false Page URI, false on error.
6013   */
6014  function get_page_uri( $page = 0 ) {
6015      if ( ! $page instanceof WP_Post ) {
6016          $page = get_post( $page );
6017      }
6018  
6019      if ( ! $page ) {
6020          return false;
6021      }
6022  
6023      $uri = $page->post_name;
6024  
6025      foreach ( $page->ancestors as $parent ) {
6026          $parent = get_post( $parent );
6027          if ( $parent && $parent->post_name ) {
6028              $uri = $parent->post_name . '/' . $uri;
6029          }
6030      }
6031  
6032      /**
6033       * Filters the URI for a page.
6034       *
6035       * @since 4.4.0
6036       *
6037       * @param string  $uri  Page URI.
6038       * @param WP_Post $page Page object.
6039       */
6040      return apply_filters( 'get_page_uri', $uri, $page );
6041  }
6042  
6043  /**
6044   * Retrieves an array of pages (or hierarchical post type items).
6045   *
6046   * @since 1.5.0
6047   * @since 6.3.0 Use WP_Query internally.
6048   *
6049   * @param array|string $args {
6050   *     Optional. Array or string of arguments to retrieve pages.
6051   *
6052   *     @type int          $child_of     Page ID to return child and grandchild pages of. Note: The value
6053   *                                      of `$hierarchical` has no bearing on whether `$child_of` returns
6054   *                                      hierarchical results. Default 0, or no restriction.
6055   *     @type string       $sort_order   How to sort retrieved pages. Accepts 'ASC', 'DESC'. Default 'ASC'.
6056   *     @type string       $sort_column  What columns to sort pages by, comma-separated. Accepts 'post_author',
6057   *                                      'post_date', 'post_title', 'post_name', 'post_modified', 'menu_order',
6058   *                                      'post_modified_gmt', 'post_parent', 'ID', 'rand', 'comment_count'.
6059   *                                      'post_' can be omitted for any values that start with it.
6060   *                                      Default 'post_title'.
6061   *     @type bool         $hierarchical Whether to return pages hierarchically. If false in conjunction with
6062   *                                      `$child_of` also being false, both arguments will be disregarded.
6063   *                                      Default true.
6064   *     @type int[]        $exclude      Array of page IDs to exclude. Default empty array.
6065   *     @type int[]        $include      Array of page IDs to include. Cannot be used with `$child_of`,
6066   *                                      `$parent`, `$exclude`, `$meta_key`, `$meta_value`, or `$hierarchical`.
6067   *                                      Default empty array.
6068   *     @type string       $meta_key     Only include pages with this meta key. Default empty.
6069   *     @type string       $meta_value   Only include pages with this meta value. Requires `$meta_key`.
6070   *                                      Default empty.
6071   *     @type string       $authors      A comma-separated list of author IDs. Default empty.
6072   *     @type int          $parent       Page ID to return direct children of. Default -1, or no restriction.
6073   *     @type string|int[] $exclude_tree Comma-separated string or array of page IDs to exclude.
6074   *                                      Default empty array.
6075   *     @type int          $number       The number of pages to return. Default 0, or all pages.
6076   *     @type int          $offset       The number of pages to skip before returning. Requires `$number`.
6077   *                                      Default 0.
6078   *     @type string       $post_type    The post type to query. Default 'page'.
6079   *     @type string|array $post_status  A comma-separated list or array of post statuses to include.
6080   *                                      Default 'publish'.
6081   * }
6082   * @return WP_Post[]|false Array of pages (or hierarchical post type items). Boolean false if the
6083   *                         specified post type is not hierarchical or the specified status is not
6084   *                         supported by the post type.
6085   */
6086  function get_pages( $args = array() ) {
6087      $defaults = array(
6088          'child_of'     => 0,
6089          'sort_order'   => 'ASC',
6090          'sort_column'  => 'post_title',
6091          'hierarchical' => 1,
6092          'exclude'      => array(),
6093          'include'      => array(),
6094          'meta_key'     => '',
6095          'meta_value'   => '',
6096          'authors'      => '',
6097          'parent'       => -1,
6098          'exclude_tree' => array(),
6099          'number'       => '',
6100          'offset'       => 0,
6101          'post_type'    => 'page',
6102          'post_status'  => 'publish',
6103      );
6104  
6105      $parsed_args = wp_parse_args( $args, $defaults );
6106  
6107      $number       = (int) $parsed_args['number'];
6108      $offset       = (int) $parsed_args['offset'];
6109      $child_of     = (int) $parsed_args['child_of'];
6110      $hierarchical = $parsed_args['hierarchical'];
6111      $exclude      = $parsed_args['exclude'];
6112      $meta_key     = $parsed_args['meta_key'];
6113      $meta_value   = $parsed_args['meta_value'];
6114      $parent       = $parsed_args['parent'];
6115      $post_status  = $parsed_args['post_status'];
6116  
6117      // Make sure the post type is hierarchical.
6118      $hierarchical_post_types = get_post_types( array( 'hierarchical' => true ) );
6119      if ( ! in_array( $parsed_args['post_type'], $hierarchical_post_types, true ) ) {
6120          return false;
6121      }
6122  
6123      if ( $parent > 0 && ! $child_of ) {
6124          $hierarchical = false;
6125      }
6126  
6127      // Make sure we have a valid post status.
6128      if ( ! is_array( $post_status ) ) {
6129          $post_status = explode( ',', $post_status );
6130      }
6131      if ( array_diff( $post_status, get_post_stati() ) ) {
6132          return false;
6133      }
6134  
6135      $query_args = array(
6136          'orderby'                => 'post_title',
6137          'order'                  => 'ASC',
6138          'post__not_in'           => wp_parse_id_list( $exclude ),
6139          'meta_key'               => $meta_key,
6140          'meta_value'             => $meta_value,
6141          'posts_per_page'         => -1,
6142          'offset'                 => $offset,
6143          'post_type'              => $parsed_args['post_type'],
6144          'post_status'            => $post_status,
6145          'update_post_term_cache' => false,
6146          'update_post_meta_cache' => false,
6147          'ignore_sticky_posts'    => true,
6148          'no_found_rows'          => true,
6149      );
6150  
6151      if ( ! empty( $parsed_args['include'] ) ) {
6152          $child_of = 0; // Ignore child_of, parent, exclude, meta_key, and meta_value params if using include.
6153          $parent   = -1;
6154          unset( $query_args['post__not_in'], $query_args['meta_key'], $query_args['meta_value'] );
6155          $hierarchical           = false;
6156          $query_args['post__in'] = wp_parse_id_list( $parsed_args['include'] );
6157      }
6158  
6159      if ( ! empty( $parsed_args['authors'] ) ) {
6160          $post_authors = wp_parse_list( $parsed_args['authors'] );
6161  
6162          if ( ! empty( $post_authors ) ) {
6163              $query_args['author__in'] = array();
6164              foreach ( $post_authors as $post_author ) {
6165                  // Do we have an author id or an author login?
6166                  if ( 0 == (int) $post_author ) {
6167                      $post_author = get_user_by( 'login', $post_author );
6168                      if ( empty( $post_author ) ) {
6169                          continue;
6170                      }
6171                      if ( empty( $post_author->ID ) ) {
6172                          continue;
6173                      }
6174                      $post_author = $post_author->ID;
6175                  }
6176                  $query_args['author__in'][] = (int) $post_author;
6177              }
6178          }
6179      }
6180  
6181      if ( is_array( $parent ) ) {
6182          $post_parent__in = array_map( 'absint', (array) $parent );
6183          if ( ! empty( $post_parent__in ) ) {
6184              $query_args['post_parent__in'] = $post_parent__in;
6185          }
6186      } elseif ( $parent >= 0 ) {
6187          $query_args['post_parent'] = $parent;
6188      }
6189  
6190      /*
6191       * Maintain backward compatibility for `sort_column` key.
6192       * Additionally to `WP_Query`, it has been supporting the `post_modified_gmt` field, so this logic will translate
6193       * it to `post_modified` which should result in the same order given the two dates in the fields match.
6194       */
6195      $orderby = wp_parse_list( $parsed_args['sort_column'] );
6196      $orderby = array_map(
6197          static function ( $orderby_field ) {
6198              $orderby_field = trim( $orderby_field );
6199              if ( 'post_modified_gmt' === $orderby_field || 'modified_gmt' === $orderby_field ) {
6200                  $orderby_field = str_replace( '_gmt', '', $orderby_field );
6201              }
6202              return $orderby_field;
6203          },
6204          $orderby
6205      );
6206      if ( $orderby ) {
6207          $query_args['orderby'] = array_fill_keys( $orderby, $parsed_args['sort_order'] );
6208      }
6209  
6210      $order = $parsed_args['sort_order'];
6211      if ( $order ) {
6212          $query_args['order'] = $order;
6213      }
6214  
6215      if ( ! empty( $number ) ) {
6216          $query_args['posts_per_page'] = $number;
6217      }
6218  
6219      /**
6220       * Filters query arguments passed to WP_Query in get_pages.
6221       *
6222       * @since 6.3.0
6223       *
6224       * @param array $query_args  Array of arguments passed to WP_Query.
6225       * @param array $parsed_args Array of get_pages() arguments.
6226       */
6227      $query_args = apply_filters( 'get_pages_query_args', $query_args, $parsed_args );
6228  
6229      $pages = new WP_Query();
6230      $pages = $pages->query( $query_args );
6231  
6232      if ( $child_of || $hierarchical ) {
6233          $pages = get_page_children( $child_of, $pages );
6234      }
6235  
6236      if ( ! empty( $parsed_args['exclude_tree'] ) ) {
6237          $exclude = wp_parse_id_list( $parsed_args['exclude_tree'] );
6238          foreach ( $exclude as $id ) {
6239              $children = get_page_children( $id, $pages );
6240              foreach ( $children as $child ) {
6241                  $exclude[] = $child->ID;
6242              }
6243          }
6244  
6245          $num_pages = count( $pages );
6246          for ( $i = 0; $i < $num_pages; $i++ ) {
6247              if ( in_array( $pages[ $i ]->ID, $exclude, true ) ) {
6248                  unset( $pages[ $i ] );
6249              }
6250          }
6251      }
6252  
6253      /**
6254       * Filters the retrieved list of pages.
6255       *
6256       * @since 2.1.0
6257       *
6258       * @param WP_Post[] $pages       Array of page objects.
6259       * @param array     $parsed_args Array of get_pages() arguments.
6260       */
6261      return apply_filters( 'get_pages', $pages, $parsed_args );
6262  }
6263  
6264  //
6265  // Attachment functions.
6266  //
6267  
6268  /**
6269   * Determines whether an attachment URI is local and really an attachment.
6270   *
6271   * For more information on this and similar theme functions, check out
6272   * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
6273   * Conditional Tags} article in the Theme Developer Handbook.
6274   *
6275   * @since 2.0.0
6276   *
6277   * @param string $url URL to check
6278   * @return bool True on success, false on failure.
6279   */
6280  function is_local_attachment( $url ) {
6281      if ( ! str_contains( $url, home_url() ) ) {
6282          return false;
6283      }
6284      if ( str_contains( $url, home_url( '/?attachment_id=' ) ) ) {
6285          return true;
6286      }
6287  
6288      $id = url_to_postid( $url );
6289      if ( $id ) {
6290          $post = get_post( $id );
6291          if ( 'attachment' === $post->post_type ) {
6292              return true;
6293          }
6294      }
6295      return false;
6296  }
6297  
6298  /**
6299   * Inserts an attachment.
6300   *
6301   * If you set the 'ID' in the $args parameter, it will mean that you are
6302   * updating and attempt to update the attachment. You can also set the
6303   * attachment name or title by setting the key 'post_name' or 'post_title'.
6304   *
6305   * You can set the dates for the attachment manually by setting the 'post_date'
6306   * and 'post_date_gmt' keys' values.
6307   *
6308   * By default, the comments will use the default settings for whether the
6309   * comments are allowed. You can close them manually or keep them open by
6310   * setting the value for the 'comment_status' key.
6311   *
6312   * @since 2.0.0
6313   * @since 4.7.0 Added the `$wp_error` parameter to allow a WP_Error to be returned on failure.
6314   * @since 5.6.0 Added the `$fire_after_hooks` parameter.
6315   *
6316   * @see wp_insert_post()
6317   *
6318   * @param string|array $args             Arguments for inserting an attachment.
6319   * @param string|false $file             Optional. Filename. Default false.
6320   * @param int          $parent_post_id   Optional. Parent post ID or 0 for no parent. Default 0.
6321   * @param bool         $wp_error         Optional. Whether to return a WP_Error on failure. Default false.
6322   * @param bool         $fire_after_hooks Optional. Whether to fire the after insert hooks. Default true.
6323   * @return int|WP_Error The attachment ID on success. The value 0 or WP_Error on failure.
6324   */
6325  function wp_insert_attachment( $args, $file = false, $parent_post_id = 0, $wp_error = false, $fire_after_hooks = true ) {
6326      $defaults = array(
6327          'file'        => $file,
6328          'post_parent' => 0,
6329      );
6330  
6331      $data = wp_parse_args( $args, $defaults );
6332  
6333      if ( ! empty( $parent_post_id ) ) {
6334          $data['post_parent'] = $parent_post_id;
6335      }
6336  
6337      $data['post_type'] = 'attachment';
6338  
6339      return wp_insert_post( $data, $wp_error, $fire_after_hooks );
6340  }
6341  
6342  /**
6343   * Trashes or deletes an attachment.
6344   *
6345   * When an attachment is permanently deleted, the file will also be removed.
6346   * Deletion removes all post meta fields, taxonomy, comments, etc. associated
6347   * with the attachment (except the main post).
6348   *
6349   * The attachment is moved to the Trash instead of permanently deleted unless Trash
6350   * for media is disabled, item is already in the Trash, or $force_delete is true.
6351   *
6352   * @since 2.0.0
6353   *
6354   * @global wpdb $wpdb WordPress database abstraction object.
6355   *
6356   * @param int  $post_id      Attachment ID.
6357   * @param bool $force_delete Optional. Whether to bypass Trash and force deletion.
6358   *                           Default false.
6359   * @return WP_Post|false|null Post data on success, false or null on failure.
6360   */
6361  function wp_delete_attachment( $post_id, $force_delete = false ) {
6362      global $wpdb;
6363  
6364      $post = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->posts WHERE ID = %d", $post_id ) );
6365  
6366      if ( ! $post ) {
6367          return $post;
6368      }
6369  
6370      $post = get_post( $post );
6371  
6372      if ( 'attachment' !== $post->post_type ) {
6373          return false;
6374      }
6375  
6376      if ( ! $force_delete && EMPTY_TRASH_DAYS && MEDIA_TRASH && 'trash' !== $post->post_status ) {
6377          return wp_trash_post( $post_id );
6378      }
6379  
6380      /**
6381       * Filters whether an attachment deletion should take place.
6382       *
6383       * @since 5.5.0
6384       *
6385       * @param WP_Post|false|null $delete       Whether to go forward with deletion.
6386       * @param WP_Post            $post         Post object.
6387       * @param bool               $force_delete Whether to bypass the Trash.
6388       */
6389      $check = apply_filters( 'pre_delete_attachment', null, $post, $force_delete );
6390      if ( null !== $check ) {
6391          return $check;
6392      }
6393  
6394      delete_post_meta( $post_id, '_wp_trash_meta_status' );
6395      delete_post_meta( $post_id, '_wp_trash_meta_time' );
6396  
6397      $meta         = wp_get_attachment_metadata( $post_id );
6398      $backup_sizes = get_post_meta( $post->ID, '_wp_attachment_backup_sizes', true );
6399      $file         = get_attached_file( $post_id );
6400  
6401      if ( is_multisite() && is_string( $file ) && ! empty( $file ) ) {
6402          clean_dirsize_cache( $file );
6403      }
6404  
6405      /**
6406       * Fires before an attachment is deleted, at the start of wp_delete_attachment().
6407       *
6408       * @since 2.0.0
6409       * @since 5.5.0 Added the `$post` parameter.
6410       *
6411       * @param int     $post_id Attachment ID.
6412       * @param WP_Post $post    Post object.
6413       */
6414      do_action( 'delete_attachment', $post_id, $post );
6415  
6416      wp_delete_object_term_relationships( $post_id, array( 'category', 'post_tag' ) );
6417      wp_delete_object_term_relationships( $post_id, get_object_taxonomies( $post->post_type ) );
6418  
6419      // Delete all for any posts.
6420      delete_metadata( 'post', null, '_thumbnail_id', $post_id, true );
6421  
6422      wp_defer_comment_counting( true );
6423  
6424      $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 ) );
6425      foreach ( $comment_ids as $comment_id ) {
6426          wp_delete_comment( $comment_id, true );
6427      }
6428  
6429      wp_defer_comment_counting( false );
6430  
6431      $post_meta_ids = $wpdb->get_col( $wpdb->prepare( "SELECT meta_id FROM $wpdb->postmeta WHERE post_id = %d ", $post_id ) );
6432      foreach ( $post_meta_ids as $mid ) {
6433          delete_metadata_by_mid( 'post', $mid );
6434      }
6435  
6436      /** This action is documented in wp-includes/post.php */
6437      do_action( 'delete_post', $post_id, $post );
6438      $result = $wpdb->delete( $wpdb->posts, array( 'ID' => $post_id ) );
6439      if ( ! $result ) {
6440          return false;
6441      }
6442      /** This action is documented in wp-includes/post.php */
6443      do_action( 'deleted_post', $post_id, $post );
6444  
6445      wp_delete_attachment_files( $post_id, $meta, $backup_sizes, $file );
6446  
6447      clean_post_cache( $post );
6448  
6449      return $post;
6450  }
6451  
6452  /**
6453   * Deletes all files that belong to the given attachment.
6454   *
6455   * @since 4.9.7
6456   *
6457   * @global wpdb $wpdb WordPress database abstraction object.
6458   *
6459   * @param int    $post_id      Attachment ID.
6460   * @param array  $meta         The attachment's meta data.
6461   * @param array  $backup_sizes The meta data for the attachment's backup images.
6462   * @param string $file         Absolute path to the attachment's file.
6463   * @return bool True on success, false on failure.
6464   */
6465  function wp_delete_attachment_files( $post_id, $meta, $backup_sizes, $file ) {
6466      global $wpdb;
6467  
6468      $uploadpath = wp_get_upload_dir();
6469      $deleted    = true;
6470  
6471      if ( ! empty( $meta['thumb'] ) ) {
6472          // Don't delete the thumb if another attachment uses it.
6473          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 ) ) ) {
6474              $thumbfile = str_replace( wp_basename( $file ), $meta['thumb'], $file );
6475  
6476              if ( ! empty( $thumbfile ) ) {
6477                  $thumbfile = path_join( $uploadpath['basedir'], $thumbfile );
6478                  $thumbdir  = path_join( $uploadpath['basedir'], dirname( $file ) );
6479  
6480                  if ( ! wp_delete_file_from_directory( $thumbfile, $thumbdir ) ) {
6481                      $deleted = false;
6482                  }
6483              }
6484          }
6485      }
6486  
6487      // Remove intermediate and backup images if there are any.
6488      if ( isset( $meta['sizes'] ) && is_array( $meta['sizes'] ) ) {
6489          $intermediate_dir = path_join( $uploadpath['basedir'], dirname( $file ) );
6490  
6491          foreach ( $meta['sizes'] as $size => $sizeinfo ) {
6492              $intermediate_file = str_replace( wp_basename( $file ), $sizeinfo['file'], $file );
6493  
6494              if ( ! empty( $intermediate_file ) ) {
6495                  $intermediate_file = path_join( $uploadpath['basedir'], $intermediate_file );
6496  
6497                  if ( ! wp_delete_file_from_directory( $intermediate_file, $intermediate_dir ) ) {
6498                      $deleted = false;
6499                  }
6500              }
6501          }
6502      }
6503  
6504      if ( ! empty( $meta['original_image'] ) ) {
6505          if ( empty( $intermediate_dir ) ) {
6506              $intermediate_dir = path_join( $uploadpath['basedir'], dirname( $file ) );
6507          }
6508  
6509          $original_image = str_replace( wp_basename( $file ), $meta['original_image'], $file );
6510  
6511          if ( ! empty( $original_image ) ) {
6512              $original_image = path_join( $uploadpath['basedir'], $original_image );
6513  
6514              if ( ! wp_delete_file_from_directory( $original_image, $intermediate_dir ) ) {
6515                  $deleted = false;
6516              }
6517          }
6518      }
6519  
6520      if ( is_array( $backup_sizes ) ) {
6521          $del_dir = path_join( $uploadpath['basedir'], dirname( $meta['file'] ) );
6522  
6523          foreach ( $backup_sizes as $size ) {
6524              $del_file = path_join( dirname( $meta['file'] ), $size['file'] );
6525  
6526              if ( ! empty( $del_file ) ) {
6527                  $del_file = path_join( $uploadpath['basedir'], $del_file );
6528  
6529                  if ( ! wp_delete_file_from_directory( $del_file, $del_dir ) ) {
6530                      $deleted = false;
6531                  }
6532              }
6533          }
6534      }
6535  
6536      if ( ! wp_delete_file_from_directory( $file, $uploadpath['basedir'] ) ) {
6537          $deleted = false;
6538      }
6539  
6540      return $deleted;
6541  }
6542  
6543  /**
6544   * Retrieves attachment metadata for attachment ID.
6545   *
6546   * @since 2.1.0
6547   * @since 6.0.0 The `$filesize` value was added to the returned array.
6548   *
6549   * @param int  $attachment_id Attachment post ID. Defaults to global $post.
6550   * @param bool $unfiltered    Optional. If true, filters are not run. Default false.
6551   * @return array|false {
6552   *     Attachment metadata. False on failure.
6553   *
6554   *     @type int    $width      The width of the attachment.
6555   *     @type int    $height     The height of the attachment.
6556   *     @type string $file       The file path relative to `wp-content/uploads`.
6557   *     @type array  $sizes      Keys are size slugs, each value is an array containing
6558   *                              'file', 'width', 'height', and 'mime-type'.
6559   *     @type array  $image_meta Image metadata.
6560   *     @type int    $filesize   File size of the attachment.
6561   * }
6562   */
6563  function wp_get_attachment_metadata( $attachment_id = 0, $unfiltered = false ) {
6564      $attachment_id = (int) $attachment_id;
6565  
6566      if ( ! $attachment_id ) {
6567          $post = get_post();
6568  
6569          if ( ! $post ) {
6570              return false;
6571          }
6572  
6573          $attachment_id = $post->ID;
6574      }
6575  
6576      $data = get_post_meta( $attachment_id, '_wp_attachment_metadata', true );
6577  
6578      if ( ! $data ) {
6579          return false;
6580      }
6581  
6582      if ( $unfiltered ) {
6583          return $data;
6584      }
6585  
6586      /**
6587       * Filters the attachment meta data.
6588       *
6589       * @since 2.1.0
6590       *
6591       * @param array $data          Array of meta data for the given attachment.
6592       * @param int   $attachment_id Attachment post ID.
6593       */
6594      return apply_filters( 'wp_get_attachment_metadata', $data, $attachment_id );
6595  }
6596  
6597  /**
6598   * Updates metadata for an attachment.
6599   *
6600   * @since 2.1.0
6601   *
6602   * @param int   $attachment_id Attachment post ID.
6603   * @param array $data          Attachment meta data.
6604   * @return int|false False if $post is invalid.
6605   */
6606  function wp_update_attachment_metadata( $attachment_id, $data ) {
6607      $attachment_id = (int) $attachment_id;
6608  
6609      $post = get_post( $attachment_id );
6610  
6611      if ( ! $post ) {
6612          return false;
6613      }
6614  
6615      /**
6616       * Filters the updated attachment meta data.
6617       *
6618       * @since 2.1.0
6619       *
6620       * @param array $data          Array of updated attachment meta data.
6621       * @param int   $attachment_id Attachment post ID.
6622       */
6623      $data = apply_filters( 'wp_update_attachment_metadata', $data, $post->ID );
6624      if ( $data ) {
6625          return update_post_meta( $post->ID, '_wp_attachment_metadata', $data );
6626      } else {
6627          return delete_post_meta( $post->ID, '_wp_attachment_metadata' );
6628      }
6629  }
6630  
6631  /**
6632   * Retrieves the URL for an attachment.
6633   *
6634   * @since 2.1.0
6635   *
6636   * @global string $pagenow The filename of the current screen.
6637   *
6638   * @param int $attachment_id Optional. Attachment post ID. Defaults to global $post.
6639   * @return string|false Attachment URL, otherwise false.
6640   */
6641  function wp_get_attachment_url( $attachment_id = 0 ) {
6642      global $pagenow;
6643  
6644      $attachment_id = (int) $attachment_id;
6645  
6646      $post = get_post( $attachment_id );
6647  
6648      if ( ! $post ) {
6649          return false;
6650      }
6651  
6652      if ( 'attachment' !== $post->post_type ) {
6653          return false;
6654      }
6655  
6656      $url = '';
6657      // Get attached file.
6658      $file = get_post_meta( $post->ID, '_wp_attached_file', true );
6659      if ( $file ) {
6660          // Get upload directory.
6661          $uploads = wp_get_upload_dir();
6662          if ( $uploads && false === $uploads['error'] ) {
6663              // Check that the upload base exists in the file location.
6664              if ( str_starts_with( $file, $uploads['basedir'] ) ) {
6665                  // Replace file location with url location.
6666                  $url = str_replace( $uploads['basedir'], $uploads['baseurl'], $file );
6667              } elseif ( str_contains( $file, 'wp-content/uploads' ) ) {
6668                  // Get the directory name relative to the basedir (back compat for pre-2.7 uploads).
6669                  $url = trailingslashit( $uploads['baseurl'] . '/' . _wp_get_attachment_relative_path( $file ) ) . wp_basename( $file );
6670              } else {
6671                  // It's a newly-uploaded file, therefore $file is relative to the basedir.
6672                  $url = $uploads['baseurl'] . "/$file";
6673              }
6674          }
6675      }
6676  
6677      /*
6678       * If any of the above options failed, Fallback on the GUID as used pre-2.7,
6679       * not recommended to rely upon this.
6680       */
6681      if ( ! $url ) {
6682          $url = get_the_guid( $post->ID );
6683      }
6684  
6685      // On SSL front end, URLs should be HTTPS.
6686      if ( is_ssl() && ! is_admin() && 'wp-login.php' !== $pagenow ) {
6687          $url = set_url_scheme( $url );
6688      }
6689  
6690      /**
6691       * Filters the attachment URL.
6692       *
6693       * @since 2.1.0
6694       *
6695       * @param string $url           URL for the given attachment.
6696       * @param int    $attachment_id Attachment post ID.
6697       */
6698      $url = apply_filters( 'wp_get_attachment_url', $url, $post->ID );
6699  
6700      if ( ! $url ) {
6701          return false;
6702      }
6703  
6704      return $url;
6705  }
6706  
6707  /**
6708   * Retrieves the caption for an attachment.
6709   *
6710   * @since 4.6.0
6711   *
6712   * @param int $post_id Optional. Attachment ID. Default is the ID of the global `$post`.
6713   * @return string|false Attachment caption on success, false on failure.
6714   */
6715  function wp_get_attachment_caption( $post_id = 0 ) {
6716      $post_id = (int) $post_id;
6717      $post    = get_post( $post_id );
6718  
6719      if ( ! $post ) {
6720          return false;
6721      }
6722  
6723      if ( 'attachment' !== $post->post_type ) {
6724          return false;
6725      }
6726  
6727      $caption = $post->post_excerpt;
6728  
6729      /**
6730       * Filters the attachment caption.
6731       *
6732       * @since 4.6.0
6733       *
6734       * @param string $caption Caption for the given attachment.
6735       * @param int    $post_id Attachment ID.
6736       */
6737      return apply_filters( 'wp_get_attachment_caption', $caption, $post->ID );
6738  }
6739  
6740  /**
6741   * Retrieves URL for an attachment thumbnail.
6742   *
6743   * @since 2.1.0
6744   * @since 6.1.0 Changed to use wp_get_attachment_image_url().
6745   *
6746   * @param int $post_id Optional. Attachment ID. Default is the ID of the global `$post`.
6747   * @return string|false Thumbnail URL on success, false on failure.
6748   */
6749  function wp_get_attachment_thumb_url( $post_id = 0 ) {
6750      $post_id = (int) $post_id;
6751  
6752      /*
6753       * This uses image_downsize() which also looks for the (very) old format $image_meta['thumb']
6754       * when the newer format $image_meta['sizes']['thumbnail'] doesn't exist.
6755       */
6756      $thumbnail_url = wp_get_attachment_image_url( $post_id, 'thumbnail' );
6757  
6758      if ( empty( $thumbnail_url ) ) {
6759          return false;
6760      }
6761  
6762      /**
6763       * Filters the attachment thumbnail URL.
6764       *
6765       * @since 2.1.0
6766       *
6767       * @param string $thumbnail_url URL for the attachment thumbnail.
6768       * @param int    $post_id       Attachment ID.
6769       */
6770      return apply_filters( 'wp_get_attachment_thumb_url', $thumbnail_url, $post_id );
6771  }
6772  
6773  /**
6774   * Verifies an attachment is of a given type.
6775   *
6776   * @since 4.2.0
6777   *
6778   * @param string      $type Attachment type. Accepts `image`, `audio`, `video`, or a file extension.
6779   * @param int|WP_Post $post Optional. Attachment ID or object. Default is global $post.
6780   * @return bool True if an accepted type or a matching file extension, false otherwise.
6781   */
6782  function wp_attachment_is( $type, $post = null ) {
6783      $post = get_post( $post );
6784  
6785      if ( ! $post ) {
6786          return false;
6787      }
6788  
6789      $file = get_attached_file( $post->ID );
6790  
6791      if ( ! $file ) {
6792          return false;
6793      }
6794  
6795      if ( str_starts_with( $post->post_mime_type, $type . '/' ) ) {
6796          return true;
6797      }
6798  
6799      $check = wp_check_filetype( $file );
6800  
6801      if ( empty( $check['ext'] ) ) {
6802          return false;
6803      }
6804  
6805      $ext = $check['ext'];
6806  
6807      if ( 'import' !== $post->post_mime_type ) {
6808          return $type === $ext;
6809      }
6810  
6811      switch ( $type ) {
6812          case 'image':
6813              $image_exts = array( 'jpg', 'jpeg', 'jpe', 'gif', 'png', 'webp', 'avif' );
6814              return in_array( $ext, $image_exts, true );
6815  
6816          case 'audio':
6817              return in_array( $ext, wp_get_audio_extensions(), true );
6818  
6819          case 'video':
6820              return in_array( $ext, wp_get_video_extensions(), true );
6821  
6822          default:
6823              return $type === $ext;
6824      }
6825  }
6826  
6827  /**
6828   * Determines whether an attachment is an image.
6829   *
6830   * For more information on this and similar theme functions, check out
6831   * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
6832   * Conditional Tags} article in the Theme Developer Handbook.
6833   *
6834   * @since 2.1.0
6835   * @since 4.2.0 Modified into wrapper for wp_attachment_is() and
6836   *              allowed WP_Post object to be passed.
6837   *
6838   * @param int|WP_Post $post Optional. Attachment ID or object. Default is global $post.
6839   * @return bool Whether the attachment is an image.
6840   */
6841  function wp_attachment_is_image( $post = null ) {
6842      return wp_attachment_is( 'image', $post );
6843  }
6844  
6845  /**
6846   * Retrieves the icon for a MIME type or attachment.
6847   *
6848   * @since 2.1.0
6849   * @since 6.5.0 Added the `$preferred_ext` parameter.
6850   *
6851   * @param string|int $mime          MIME type or attachment ID.
6852   * @param string     $preferred_ext File format to prefer in return. Default '.png'.
6853   * @return string|false Icon, false otherwise.
6854   */
6855  function wp_mime_type_icon( $mime = 0, $preferred_ext = '.png' ) {
6856      if ( ! is_numeric( $mime ) ) {
6857          $icon = wp_cache_get( "mime_type_icon_$mime" );
6858      }
6859  
6860      $post_id = 0;
6861      if ( empty( $icon ) ) {
6862          $post_mimes = array();
6863          if ( is_numeric( $mime ) ) {
6864              $mime = (int) $mime;
6865              $post = get_post( $mime );
6866              if ( $post ) {
6867                  $post_id = (int) $post->ID;
6868                  $file    = get_attached_file( $post_id );
6869                  $ext     = preg_replace( '/^.+?\.([^.]+)$/', '$1', $file );
6870                  if ( ! empty( $ext ) ) {
6871                      $post_mimes[] = $ext;
6872                      $ext_type     = wp_ext2type( $ext );
6873                      if ( $ext_type ) {
6874                          $post_mimes[] = $ext_type;
6875                      }
6876                  }
6877                  $mime = $post->post_mime_type;
6878              } else {
6879                  $mime = 0;
6880              }
6881          } else {
6882              $post_mimes[] = $mime;
6883          }
6884  
6885          $icon_files = wp_cache_get( 'icon_files' );
6886  
6887          if ( ! is_array( $icon_files ) ) {
6888              /**
6889               * Filters the icon directory path.
6890               *
6891               * @since 2.0.0
6892               *
6893               * @param string $path Icon directory absolute path.
6894               */
6895              $icon_dir = apply_filters( 'icon_dir', ABSPATH . WPINC . '/images/media' );
6896  
6897              /**
6898               * Filters the icon directory URI.
6899               *
6900               * @since 2.0.0
6901               *
6902               * @param string $uri Icon directory URI.
6903               */
6904              $icon_dir_uri = apply_filters( 'icon_dir_uri', includes_url( 'images/media' ) );
6905  
6906              /**
6907               * Filters the array of icon directory URIs.
6908               *
6909               * @since 2.5.0
6910               *
6911               * @param string[] $uris Array of icon directory URIs keyed by directory absolute path.
6912               */
6913              $dirs       = apply_filters( 'icon_dirs', array( $icon_dir => $icon_dir_uri ) );
6914              $icon_files = array();
6915              $all_icons  = array();
6916              while ( $dirs ) {
6917                  $keys = array_keys( $dirs );
6918                  $dir  = array_shift( $keys );
6919                  $uri  = array_shift( $dirs );
6920                  $dh   = opendir( $dir );
6921                  if ( $dh ) {
6922                      while ( false !== $file = readdir( $dh ) ) {
6923                          $file = wp_basename( $file );
6924                          if ( str_starts_with( $file, '.' ) ) {
6925                              continue;
6926                          }
6927  
6928                          $ext = strtolower( substr( $file, -4 ) );
6929                          if ( ! in_array( $ext, array( '.svg', '.png', '.gif', '.jpg' ), true ) ) {
6930                              if ( is_dir( "$dir/$file" ) ) {
6931                                  $dirs[ "$dir/$file" ] = "$uri/$file";
6932                              }
6933                              continue;
6934                          }
6935                          $all_icons[ "$dir/$file" ] = "$uri/$file";
6936                          if ( $ext === $preferred_ext ) {
6937                              $icon_files[ "$dir/$file" ] = "$uri/$file";
6938                          }
6939                      }
6940                      closedir( $dh );
6941                  }
6942              }
6943              // If directory only contained icons of a non-preferred format, return those.
6944              if ( empty( $icon_files ) ) {
6945                  $icon_files = $all_icons;
6946              }
6947              wp_cache_add( 'icon_files', $icon_files, 'default', 600 );
6948          }
6949  
6950          $types = array();
6951          // Icon wp_basename - extension = MIME wildcard.
6952          foreach ( $icon_files as $file => $uri ) {
6953              $types[ preg_replace( '/^([^.]*).*$/', '$1', wp_basename( $file ) ) ] =& $icon_files[ $file ];
6954          }
6955  
6956          if ( ! empty( $mime ) ) {
6957              $post_mimes[] = substr( $mime, 0, strpos( $mime, '/' ) );
6958              $post_mimes[] = substr( $mime, strpos( $mime, '/' ) + 1 );
6959              $post_mimes[] = str_replace( '/', '_', $mime );
6960          }
6961  
6962          $matches            = wp_match_mime_types( array_keys( $types ), $post_mimes );
6963          $matches['default'] = array( 'default' );
6964  
6965          foreach ( $matches as $match => $wilds ) {
6966              foreach ( $wilds as $wild ) {
6967                  if ( ! isset( $types[ $wild ] ) ) {
6968                      continue;
6969                  }
6970  
6971                  $icon = $types[ $wild ];
6972                  if ( ! is_numeric( $mime ) ) {
6973                      wp_cache_add( "mime_type_icon_$mime", $icon );
6974                  }
6975                  break 2;
6976              }
6977          }
6978      }
6979  
6980      /**
6981       * Filters the mime type icon.
6982       *
6983       * @since 2.1.0
6984       *
6985       * @param string $icon    Path to the mime type icon.
6986       * @param string $mime    Mime type.
6987       * @param int    $post_id Attachment ID. Will equal 0 if the function passed
6988       *                        the mime type.
6989       */
6990      return apply_filters( 'wp_mime_type_icon', $icon, $mime, $post_id );
6991  }
6992  
6993  /**
6994   * Checks for changed slugs for published post objects and save the old slug.
6995   *
6996   * The function is used when a post object of any type is updated,
6997   * by comparing the current and previous post objects.
6998   *
6999   * If the slug was changed and not already part of the old slugs then it will be
7000   * added to the post meta field ('_wp_old_slug') for storing old slugs for that
7001   * post.
7002   *
7003   * The most logically usage of this function is redirecting changed post objects, so
7004   * that those that linked to an changed post will be redirected to the new post.
7005   *
7006   * @since 2.1.0
7007   *
7008   * @param int     $post_id     Post ID.
7009   * @param WP_Post $post        The post object.
7010   * @param WP_Post $post_before The previous post object.
7011   */
7012  function wp_check_for_changed_slugs( $post_id, $post, $post_before ) {
7013      // Don't bother if it hasn't changed.
7014      if ( $post->post_name == $post_before->post_name ) {
7015          return;
7016      }
7017  
7018      // We're only concerned with published, non-hierarchical objects.
7019      if ( ! ( 'publish' === $post->post_status || ( 'attachment' === get_post_type( $post ) && 'inherit' === $post->post_status ) ) || is_post_type_hierarchical( $post->post_type ) ) {
7020          return;
7021      }
7022  
7023      $old_slugs = (array) get_post_meta( $post_id, '_wp_old_slug' );
7024  
7025      // If we haven't added this old slug before, add it now.
7026      if ( ! empty( $post_before->post_name ) && ! in_array( $post_before->post_name, $old_slugs, true ) ) {
7027          add_post_meta( $post_id, '_wp_old_slug', $post_before->post_name );
7028      }
7029  
7030      // If the new slug was used previously, delete it from the list.
7031      if ( in_array( $post->post_name, $old_slugs, true ) ) {
7032          delete_post_meta( $post_id, '_wp_old_slug', $post->post_name );
7033      }
7034  }
7035  
7036  /**
7037   * Checks for changed dates for published post objects and save the old date.
7038   *
7039   * The function is used when a post object of any type is updated,
7040   * by comparing the current and previous post objects.
7041   *
7042   * If the date was changed and not already part of the old dates then it will be
7043   * added to the post meta field ('_wp_old_date') for storing old dates for that
7044   * post.
7045   *
7046   * The most logically usage of this function is redirecting changed post objects, so
7047   * that those that linked to an changed post will be redirected to the new post.
7048   *
7049   * @since 4.9.3
7050   *
7051   * @param int     $post_id     Post ID.
7052   * @param WP_Post $post        The post object.
7053   * @param WP_Post $post_before The previous post object.
7054   */
7055  function wp_check_for_changed_dates( $post_id, $post, $post_before ) {
7056      $previous_date = gmdate( 'Y-m-d', strtotime( $post_before->post_date ) );
7057      $new_date      = gmdate( 'Y-m-d', strtotime( $post->post_date ) );
7058  
7059      // Don't bother if it hasn't changed.
7060      if ( $new_date == $previous_date ) {
7061          return;
7062      }
7063  
7064      // We're only concerned with published, non-hierarchical objects.
7065      if ( ! ( 'publish' === $post->post_status || ( 'attachment' === get_post_type( $post ) && 'inherit' === $post->post_status ) ) || is_post_type_hierarchical( $post->post_type ) ) {
7066          return;
7067      }
7068  
7069      $old_dates = (array) get_post_meta( $post_id, '_wp_old_date' );
7070  
7071      // If we haven't added this old date before, add it now.
7072      if ( ! empty( $previous_date ) && ! in_array( $previous_date, $old_dates, true ) ) {
7073          add_post_meta( $post_id, '_wp_old_date', $previous_date );
7074      }
7075  
7076      // If the new slug was used previously, delete it from the list.
7077      if ( in_array( $new_date, $old_dates, true ) ) {
7078          delete_post_meta( $post_id, '_wp_old_date', $new_date );
7079      }
7080  }
7081  
7082  /**
7083   * Retrieves the private post SQL based on capability.
7084   *
7085   * This function provides a standardized way to appropriately select on the
7086   * post_status of a post type. The function will return a piece of SQL code
7087   * that can be added to a WHERE clause; this SQL is constructed to allow all
7088   * published posts, and all private posts to which the user has access.
7089   *
7090   * @since 2.2.0
7091   * @since 4.3.0 Added the ability to pass an array to `$post_type`.
7092   *
7093   * @param string|array $post_type Single post type or an array of post types. Currently only supports 'post' or 'page'.
7094   * @return string SQL code that can be added to a where clause.
7095   */
7096  function get_private_posts_cap_sql( $post_type ) {
7097      return get_posts_by_author_sql( $post_type, false );
7098  }
7099  
7100  /**
7101   * Retrieves the post SQL based on capability, author, and type.
7102   *
7103   * @since 3.0.0
7104   * @since 4.3.0 Introduced the ability to pass an array of post types to `$post_type`.
7105   *
7106   * @see get_private_posts_cap_sql()
7107   * @global wpdb $wpdb WordPress database abstraction object.
7108   *
7109   * @param string|string[] $post_type   Single post type or an array of post types.
7110   * @param bool            $full        Optional. Returns a full WHERE statement instead of just
7111   *                                     an 'andalso' term. Default true.
7112   * @param int             $post_author Optional. Query posts having a single author ID. Default null.
7113   * @param bool            $public_only Optional. Only return public posts. Skips cap checks for
7114   *                                     $current_user.  Default false.
7115   * @return string SQL WHERE code that can be added to a query.
7116   */
7117  function get_posts_by_author_sql( $post_type, $full = true, $post_author = null, $public_only = false ) {
7118      global $wpdb;
7119  
7120      if ( is_array( $post_type ) ) {
7121          $post_types = $post_type;
7122      } else {
7123          $post_types = array( $post_type );
7124      }
7125  
7126      $post_type_clauses = array();
7127      foreach ( $post_types as $post_type ) {
7128          $post_type_obj = get_post_type_object( $post_type );
7129  
7130          if ( ! $post_type_obj ) {
7131              continue;
7132          }
7133  
7134          /**
7135           * Filters the capability to read private posts for a custom post type
7136           * when generating SQL for getting posts by author.
7137           *
7138           * @since 2.2.0
7139           * @deprecated 3.2.0 The hook transitioned from "somewhat useless" to "totally useless".
7140           *
7141           * @param string $cap Capability.
7142           */
7143          $cap = apply_filters_deprecated( 'pub_priv_sql_capability', array( '' ), '3.2.0' );
7144  
7145          if ( ! $cap ) {
7146              $cap = current_user_can( $post_type_obj->cap->read_private_posts );
7147          }
7148  
7149          // Only need to check the cap if $public_only is false.
7150          $post_status_sql = "post_status = 'publish'";
7151  
7152          if ( false === $public_only ) {
7153              if ( $cap ) {
7154                  // Does the user have the capability to view private posts? Guess so.
7155                  $post_status_sql .= " OR post_status = 'private'";
7156              } elseif ( is_user_logged_in() ) {
7157                  // Users can view their own private posts.
7158                  $id = get_current_user_id();
7159                  if ( null === $post_author || ! $full ) {
7160                      $post_status_sql .= " OR post_status = 'private' AND post_author = $id";
7161                  } elseif ( $id == (int) $post_author ) {
7162                      $post_status_sql .= " OR post_status = 'private'";
7163                  } // Else none.
7164              } // Else none.
7165          }
7166  
7167          $post_type_clauses[] = "( post_type = '" . $post_type . "' AND ( $post_status_sql ) )";
7168      }
7169  
7170      if ( empty( $post_type_clauses ) ) {
7171          return $full ? 'WHERE 1 = 0' : '1 = 0';
7172      }
7173  
7174      $sql = '( ' . implode( ' OR ', $post_type_clauses ) . ' )';
7175  
7176      if ( null !== $post_author ) {
7177          $sql .= $wpdb->prepare( ' AND post_author = %d', $post_author );
7178      }
7179  
7180      if ( $full ) {
7181          $sql = 'WHERE ' . $sql;
7182      }
7183  
7184      return $sql;
7185  }
7186  
7187  /**
7188   * Retrieves the most recent time that a post on the site was published.
7189   *
7190   * The server timezone is the default and is the difference between GMT and
7191   * server time. The 'blog' value is the date when the last post was posted.
7192   * The 'gmt' is when the last post was posted in GMT formatted date.
7193   *
7194   * @since 0.71
7195   * @since 4.4.0 The `$post_type` argument was added.
7196   *
7197   * @param string $timezone  Optional. The timezone for the timestamp. Accepts 'server', 'blog', or 'gmt'.
7198   *                          'server' uses the server's internal timezone.
7199   *                          'blog' uses the `post_date` field, which proxies to the timezone set for the site.
7200   *                          'gmt' uses the `post_date_gmt` field.
7201   *                          Default 'server'.
7202   * @param string $post_type Optional. The post type to check. Default 'any'.
7203   * @return string The date of the last post, or false on failure.
7204   */
7205  function get_lastpostdate( $timezone = 'server', $post_type = 'any' ) {
7206      $lastpostdate = _get_last_post_time( $timezone, 'date', $post_type );
7207  
7208      /**
7209       * Filters the most recent time that a post on the site was published.
7210       *
7211       * @since 2.3.0
7212       * @since 5.5.0 Added the `$post_type` parameter.
7213       *
7214       * @param string|false $lastpostdate The most recent time that a post was published,
7215       *                                   in 'Y-m-d H:i:s' format. False on failure.
7216       * @param string       $timezone     Location to use for getting the post published date.
7217       *                                   See get_lastpostdate() for accepted `$timezone` values.
7218       * @param string       $post_type    The post type to check.
7219       */
7220      return apply_filters( 'get_lastpostdate', $lastpostdate, $timezone, $post_type );
7221  }
7222  
7223  /**
7224   * Gets the most recent time that a post on the site was modified.
7225   *
7226   * The server timezone is the default and is the difference between GMT and
7227   * server time. The 'blog' value is just when the last post was modified.
7228   * The 'gmt' is when the last post was modified in GMT time.
7229   *
7230   * @since 1.2.0
7231   * @since 4.4.0 The `$post_type` argument was added.
7232   *
7233   * @param string $timezone  Optional. The timezone for the timestamp. See get_lastpostdate()
7234   *                          for information on accepted values.
7235   *                          Default 'server'.
7236   * @param string $post_type Optional. The post type to check. Default 'any'.
7237   * @return string The timestamp in 'Y-m-d H:i:s' format, or false on failure.
7238   */
7239  function get_lastpostmodified( $timezone = 'server', $post_type = 'any' ) {
7240      /**
7241       * Pre-filter the return value of get_lastpostmodified() before the query is run.
7242       *
7243       * @since 4.4.0
7244       *
7245       * @param string|false $lastpostmodified The most recent time that a post was modified,
7246       *                                       in 'Y-m-d H:i:s' format, or false. Returning anything
7247       *                                       other than false will short-circuit the function.
7248       * @param string       $timezone         Location to use for getting the post modified date.
7249       *                                       See get_lastpostdate() for accepted `$timezone` values.
7250       * @param string       $post_type        The post type to check.
7251       */
7252      $lastpostmodified = apply_filters( 'pre_get_lastpostmodified', false, $timezone, $post_type );
7253  
7254      if ( false !== $lastpostmodified ) {
7255          return $lastpostmodified;
7256      }
7257  
7258      $lastpostmodified = _get_last_post_time( $timezone, 'modified', $post_type );
7259      $lastpostdate     = get_lastpostdate( $timezone, $post_type );
7260  
7261      if ( $lastpostdate > $lastpostmodified ) {
7262          $lastpostmodified = $lastpostdate;
7263      }
7264  
7265      /**
7266       * Filters the most recent time that a post on the site was modified.
7267       *
7268       * @since 2.3.0
7269       * @since 5.5.0 Added the `$post_type` parameter.
7270       *
7271       * @param string|false $lastpostmodified The most recent time that a post was modified,
7272       *                                       in 'Y-m-d H:i:s' format. False on failure.
7273       * @param string       $timezone         Location to use for getting the post modified date.
7274       *                                       See get_lastpostdate() for accepted `$timezone` values.
7275       * @param string       $post_type        The post type to check.
7276       */
7277      return apply_filters( 'get_lastpostmodified', $lastpostmodified, $timezone, $post_type );
7278  }
7279  
7280  /**
7281   * Gets the timestamp of the last time any post was modified or published.
7282   *
7283   * @since 3.1.0
7284   * @since 4.4.0 The `$post_type` argument was added.
7285   * @access private
7286   *
7287   * @global wpdb $wpdb WordPress database abstraction object.
7288   *
7289   * @param string $timezone  The timezone for the timestamp. See get_lastpostdate().
7290   *                          for information on accepted values.
7291   * @param string $field     Post field to check. Accepts 'date' or 'modified'.
7292   * @param string $post_type Optional. The post type to check. Default 'any'.
7293   * @return string|false The timestamp in 'Y-m-d H:i:s' format, or false on failure.
7294   */
7295  function _get_last_post_time( $timezone, $field, $post_type = 'any' ) {
7296      global $wpdb;
7297  
7298      if ( ! in_array( $field, array( 'date', 'modified' ), true ) ) {
7299          return false;
7300      }
7301  
7302      $timezone = strtolower( $timezone );
7303  
7304      $key = "lastpost{$field}:$timezone";
7305      if ( 'any' !== $post_type ) {
7306          $key .= ':' . sanitize_key( $post_type );
7307      }
7308  
7309      $date = wp_cache_get( $key, 'timeinfo' );
7310      if ( false !== $date ) {
7311          return $date;
7312      }
7313  
7314      if ( 'any' === $post_type ) {
7315          $post_types = get_post_types( array( 'public' => true ) );
7316          array_walk( $post_types, array( $wpdb, 'escape_by_ref' ) );
7317          $post_types = "'" . implode( "', '", $post_types ) . "'";
7318      } else {
7319          $post_types = "'" . sanitize_key( $post_type ) . "'";
7320      }
7321  
7322      switch ( $timezone ) {
7323          case 'gmt':
7324              $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" );
7325              break;
7326          case 'blog':
7327              $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" );
7328              break;
7329          case 'server':
7330              $add_seconds_server = gmdate( 'Z' );
7331              $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" );
7332              break;
7333      }
7334  
7335      if ( $date ) {
7336          wp_cache_set( $key, $date, 'timeinfo' );
7337  
7338          return $date;
7339      }
7340  
7341      return false;
7342  }
7343  
7344  /**
7345   * Updates posts in cache.
7346   *
7347   * @since 1.5.1
7348   *
7349   * @param WP_Post[] $posts Array of post objects (passed by reference).
7350   */
7351  function update_post_cache( &$posts ) {
7352      if ( ! $posts ) {
7353          return;
7354      }
7355  
7356      $data = array();
7357      foreach ( $posts as $post ) {
7358          if ( empty( $post->filter ) || 'raw' !== $post->filter ) {
7359              $post = sanitize_post( $post, 'raw' );
7360          }
7361          $data[ $post->ID ] = $post;
7362      }
7363      wp_cache_add_multiple( $data, 'posts' );
7364  }
7365  
7366  /**
7367   * Will clean the post in the cache.
7368   *
7369   * Cleaning means delete from the cache of the post. Will call to clean the term
7370   * object cache associated with the post ID.
7371   *
7372   * This function not run if $_wp_suspend_cache_invalidation is not empty. See
7373   * wp_suspend_cache_invalidation().
7374   *
7375   * @since 2.0.0
7376   *
7377   * @global bool $_wp_suspend_cache_invalidation
7378   *
7379   * @param int|WP_Post $post Post ID or post object to remove from the cache.
7380   */
7381  function clean_post_cache( $post ) {
7382      global $_wp_suspend_cache_invalidation;
7383  
7384      if ( ! empty( $_wp_suspend_cache_invalidation ) ) {
7385          return;
7386      }
7387  
7388      $post = get_post( $post );
7389  
7390      if ( ! $post ) {
7391          return;
7392      }
7393  
7394      wp_cache_delete( $post->ID, 'posts' );
7395      wp_cache_delete( 'post_parent:' . (string) $post->ID, 'posts' );
7396      wp_cache_delete( $post->ID, 'post_meta' );
7397  
7398      clean_object_term_cache( $post->ID, $post->post_type );
7399  
7400      wp_cache_delete( 'wp_get_archives', 'general' );
7401  
7402      /**
7403       * Fires immediately after the given post's cache is cleaned.
7404       *
7405       * @since 2.5.0
7406       *
7407       * @param int     $post_id Post ID.
7408       * @param WP_Post $post    Post object.
7409       */
7410      do_action( 'clean_post_cache', $post->ID, $post );
7411  
7412      if ( 'page' === $post->post_type ) {
7413          wp_cache_delete( 'all_page_ids', 'posts' );
7414  
7415          /**
7416           * Fires immediately after the given page's cache is cleaned.
7417           *
7418           * @since 2.5.0
7419           *
7420           * @param int $post_id Post ID.
7421           */
7422          do_action( 'clean_page_cache', $post->ID );
7423      }
7424  
7425      wp_cache_set_posts_last_changed();
7426  }
7427  
7428  /**
7429   * Updates post, term, and metadata caches for a list of post objects.
7430   *
7431   * @since 1.5.0
7432   *
7433   * @param WP_Post[] $posts             Array of post objects (passed by reference).
7434   * @param string    $post_type         Optional. Post type. Default 'post'.
7435   * @param bool      $update_term_cache Optional. Whether to update the term cache. Default true.
7436   * @param bool      $update_meta_cache Optional. Whether to update the meta cache. Default true.
7437   */
7438  function update_post_caches( &$posts, $post_type = 'post', $update_term_cache = true, $update_meta_cache = true ) {
7439      // No point in doing all this work if we didn't match any posts.
7440      if ( ! $posts ) {
7441          return;
7442      }
7443  
7444      update_post_cache( $posts );
7445  
7446      $post_ids = array();
7447      foreach ( $posts as $post ) {
7448          $post_ids[] = $post->ID;
7449      }
7450  
7451      if ( ! $post_type ) {
7452          $post_type = 'any';
7453      }
7454  
7455      if ( $update_term_cache ) {
7456          if ( is_array( $post_type ) ) {
7457              $ptypes = $post_type;
7458          } elseif ( 'any' === $post_type ) {
7459              $ptypes = array();
7460              // Just use the post_types in the supplied posts.
7461              foreach ( $posts as $post ) {
7462                  $ptypes[] = $post->post_type;
7463              }
7464              $ptypes = array_unique( $ptypes );
7465          } else {
7466              $ptypes = array( $post_type );
7467          }
7468  
7469          if ( ! empty( $ptypes ) ) {
7470              update_object_term_cache( $post_ids, $ptypes );
7471          }
7472      }
7473  
7474      if ( $update_meta_cache ) {
7475          update_postmeta_cache( $post_ids );
7476      }
7477  }
7478  
7479  /**
7480   * Updates post author user caches for a list of post objects.
7481   *
7482   * @since 6.1.0
7483   *
7484   * @param WP_Post[] $posts Array of post objects.
7485   */
7486  function update_post_author_caches( $posts ) {
7487      /*
7488       * cache_users() is a pluggable function so is not available prior
7489       * to the `plugins_loaded` hook firing. This is to ensure against
7490       * fatal errors when the function is not available.
7491       */
7492      if ( ! function_exists( 'cache_users' ) ) {
7493          return;
7494      }
7495  
7496      $author_ids = wp_list_pluck( $posts, 'post_author' );
7497      $author_ids = array_map( 'absint', $author_ids );
7498      $author_ids = array_unique( array_filter( $author_ids ) );
7499  
7500      cache_users( $author_ids );
7501  }
7502  
7503  /**
7504   * Updates parent post caches for a list of post objects.
7505   *
7506   * @since 6.1.0
7507   *
7508   * @param WP_Post[] $posts Array of post objects.
7509   */
7510  function update_post_parent_caches( $posts ) {
7511      $parent_ids = wp_list_pluck( $posts, 'post_parent' );
7512      $parent_ids = array_map( 'absint', $parent_ids );
7513      $parent_ids = array_unique( array_filter( $parent_ids ) );
7514  
7515      if ( ! empty( $parent_ids ) ) {
7516          _prime_post_caches( $parent_ids, false );
7517      }
7518  }
7519  
7520  /**
7521   * Updates metadata cache for a list of post IDs.
7522   *
7523   * Performs SQL query to retrieve the metadata for the post IDs and updates the
7524   * metadata cache for the posts. Therefore, the functions, which call this
7525   * function, do not need to perform SQL queries on their own.
7526   *
7527   * @since 2.1.0
7528   *
7529   * @param int[] $post_ids Array of post IDs.
7530   * @return array|false An array of metadata on success, false if there is nothing to update.
7531   */
7532  function update_postmeta_cache( $post_ids ) {
7533      return update_meta_cache( 'post', $post_ids );
7534  }
7535  
7536  /**
7537   * Will clean the attachment in the cache.
7538   *
7539   * Cleaning means delete from the cache. Optionally will clean the term
7540   * object cache associated with the attachment ID.
7541   *
7542   * This function will not run if $_wp_suspend_cache_invalidation is not empty.
7543   *
7544   * @since 3.0.0
7545   *
7546   * @global bool $_wp_suspend_cache_invalidation
7547   *
7548   * @param int  $id          The attachment ID in the cache to clean.
7549   * @param bool $clean_terms Optional. Whether to clean terms cache. Default false.
7550   */
7551  function clean_attachment_cache( $id, $clean_terms = false ) {
7552      global $_wp_suspend_cache_invalidation;
7553  
7554      if ( ! empty( $_wp_suspend_cache_invalidation ) ) {
7555          return;
7556      }
7557  
7558      $id = (int) $id;
7559  
7560      wp_cache_delete( $id, 'posts' );
7561      wp_cache_delete( $id, 'post_meta' );
7562  
7563      if ( $clean_terms ) {
7564          clean_object_term_cache( $id, 'attachment' );
7565      }
7566  
7567      /**
7568       * Fires after the given attachment's cache is cleaned.
7569       *
7570       * @since 3.0.0
7571       *
7572       * @param int $id Attachment ID.
7573       */
7574      do_action( 'clean_attachment_cache', $id );
7575  }
7576  
7577  //
7578  // Hooks.
7579  //
7580  
7581  /**
7582   * Hook for managing future post transitions to published.
7583   *
7584   * @since 2.3.0
7585   * @access private
7586   *
7587   * @see wp_clear_scheduled_hook()
7588   * @global wpdb $wpdb WordPress database abstraction object.
7589   *
7590   * @param string  $new_status New post status.
7591   * @param string  $old_status Previous post status.
7592   * @param WP_Post $post       Post object.
7593   */
7594  function _transition_post_status( $new_status, $old_status, $post ) {
7595      global $wpdb;
7596  
7597      if ( 'publish' !== $old_status && 'publish' === $new_status ) {
7598          // Reset GUID if transitioning to publish and it is empty.
7599          if ( '' === get_the_guid( $post->ID ) ) {
7600              $wpdb->update( $wpdb->posts, array( 'guid' => get_permalink( $post->ID ) ), array( 'ID' => $post->ID ) );
7601          }
7602  
7603          /**
7604           * Fires when a post's status is transitioned from private to published.
7605           *
7606           * @since 1.5.0
7607           * @deprecated 2.3.0 Use {@see 'private_to_publish'} instead.
7608           *
7609           * @param int $post_id Post ID.
7610           */
7611          do_action_deprecated( 'private_to_published', array( $post->ID ), '2.3.0', 'private_to_publish' );
7612      }
7613  
7614      // If published posts changed clear the lastpostmodified cache.
7615      if ( 'publish' === $new_status || 'publish' === $old_status ) {
7616          foreach ( array( 'server', 'gmt', 'blog' ) as $timezone ) {
7617              wp_cache_delete( "lastpostmodified:$timezone", 'timeinfo' );
7618              wp_cache_delete( "lastpostdate:$timezone", 'timeinfo' );
7619              wp_cache_delete( "lastpostdate:$timezone:{$post->post_type}", 'timeinfo' );
7620          }
7621      }
7622  
7623      if ( $new_status !== $old_status ) {
7624          wp_cache_delete( _count_posts_cache_key( $post->post_type ), 'counts' );
7625          wp_cache_delete( _count_posts_cache_key( $post->post_type, 'readable' ), 'counts' );
7626      }
7627  
7628      // Always clears the hook in case the post status bounced from future to draft.
7629      wp_clear_scheduled_hook( 'publish_future_post', array( $post->ID ) );
7630  }
7631  
7632  /**
7633   * Hook used to schedule publication for a post marked for the future.
7634   *
7635   * The $post properties used and must exist are 'ID' and 'post_date_gmt'.
7636   *
7637   * @since 2.3.0
7638   * @access private
7639   *
7640   * @param int     $deprecated Not used. Can be set to null. Never implemented. Not marked
7641   *                            as deprecated with _deprecated_argument() as it conflicts with
7642   *                            wp_transition_post_status() and the default filter for _future_post_hook().
7643   * @param WP_Post $post       Post object.
7644   */
7645  function _future_post_hook( $deprecated, $post ) {
7646      wp_clear_scheduled_hook( 'publish_future_post', array( $post->ID ) );
7647      wp_schedule_single_event( strtotime( get_gmt_from_date( $post->post_date ) . ' GMT' ), 'publish_future_post', array( $post->ID ) );
7648  }
7649  
7650  /**
7651   * Hook to schedule pings and enclosures when a post is published.
7652   *
7653   * Uses XMLRPC_REQUEST and WP_IMPORTING constants.
7654   *
7655   * @since 2.3.0
7656   * @access private
7657   *
7658   * @param int $post_id The ID of the post being published.
7659   */
7660  function _publish_post_hook( $post_id ) {
7661      if ( defined( 'XMLRPC_REQUEST' ) ) {
7662          /**
7663           * Fires when _publish_post_hook() is called during an XML-RPC request.
7664           *
7665           * @since 2.1.0
7666           *
7667           * @param int $post_id Post ID.
7668           */
7669          do_action( 'xmlrpc_publish_post', $post_id );
7670      }
7671  
7672      if ( defined( 'WP_IMPORTING' ) ) {
7673          return;
7674      }
7675  
7676      if ( get_option( 'default_pingback_flag' ) ) {
7677          add_post_meta( $post_id, '_pingme', '1', true );
7678      }
7679      add_post_meta( $post_id, '_encloseme', '1', true );
7680  
7681      $to_ping = get_to_ping( $post_id );
7682      if ( ! empty( $to_ping ) ) {
7683          add_post_meta( $post_id, '_trackbackme', '1' );
7684      }
7685  
7686      if ( ! wp_next_scheduled( 'do_pings' ) ) {
7687          wp_schedule_single_event( time(), 'do_pings' );
7688      }
7689  }
7690  
7691  /**
7692   * Returns the ID of the post's parent.
7693   *
7694   * @since 3.1.0
7695   * @since 5.9.0 The `$post` parameter was made optional.
7696   *
7697   * @param int|WP_Post|null $post Optional. Post ID or post object. Defaults to global $post.
7698   * @return int|false Post parent ID (which can be 0 if there is no parent),
7699   *                   or false if the post does not exist.
7700   */
7701  function wp_get_post_parent_id( $post = null ) {
7702      $post = get_post( $post );
7703  
7704      if ( ! $post || is_wp_error( $post ) ) {
7705          return false;
7706      }
7707  
7708      return (int) $post->post_parent;
7709  }
7710  
7711  /**
7712   * Checks the given subset of the post hierarchy for hierarchy loops.
7713   *
7714   * Prevents loops from forming and breaks those that it finds. Attached
7715   * to the {@see 'wp_insert_post_parent'} filter.
7716   *
7717   * @since 3.1.0
7718   *
7719   * @see wp_find_hierarchy_loop()
7720   *
7721   * @param int $post_parent ID of the parent for the post we're checking.
7722   * @param int $post_id     ID of the post we're checking.
7723   * @return int The new post_parent for the post, 0 otherwise.
7724   */
7725  function wp_check_post_hierarchy_for_loops( $post_parent, $post_id ) {
7726      // Nothing fancy here - bail.
7727      if ( ! $post_parent ) {
7728          return 0;
7729      }
7730  
7731      // New post can't cause a loop.
7732      if ( ! $post_id ) {
7733          return $post_parent;
7734      }
7735  
7736      // Can't be its own parent.
7737      if ( $post_parent == $post_id ) {
7738          return 0;
7739      }
7740  
7741      // Now look for larger loops.
7742      $loop = wp_find_hierarchy_loop( 'wp_get_post_parent_id', $post_id, $post_parent );
7743      if ( ! $loop ) {
7744          return $post_parent; // No loop.
7745      }
7746  
7747      // Setting $post_parent to the given value causes a loop.
7748      if ( isset( $loop[ $post_id ] ) ) {
7749          return 0;
7750      }
7751  
7752      // There's a loop, but it doesn't contain $post_id. Break the loop.
7753      foreach ( array_keys( $loop ) as $loop_member ) {
7754          wp_update_post(
7755              array(
7756                  'ID'          => $loop_member,
7757                  'post_parent' => 0,
7758              )
7759          );
7760      }
7761  
7762      return $post_parent;
7763  }
7764  
7765  /**
7766   * Sets the post thumbnail (featured image) for the given post.
7767   *
7768   * @since 3.1.0
7769   *
7770   * @param int|WP_Post $post         Post ID or post object where thumbnail should be attached.
7771   * @param int         $thumbnail_id Thumbnail to attach.
7772   * @return int|bool True on success, false on failure.
7773   */
7774  function set_post_thumbnail( $post, $thumbnail_id ) {
7775      $post         = get_post( $post );
7776      $thumbnail_id = absint( $thumbnail_id );
7777      if ( $post && $thumbnail_id && get_post( $thumbnail_id ) ) {
7778          if ( wp_get_attachment_image( $thumbnail_id, 'thumbnail' ) ) {
7779              return update_post_meta( $post->ID, '_thumbnail_id', $thumbnail_id );
7780          } else {
7781              return delete_post_meta( $post->ID, '_thumbnail_id' );
7782          }
7783      }
7784      return false;
7785  }
7786  
7787  /**
7788   * Removes the thumbnail (featured image) from the given post.
7789   *
7790   * @since 3.3.0
7791   *
7792   * @param int|WP_Post $post Post ID or post object from which the thumbnail should be removed.
7793   * @return bool True on success, false on failure.
7794   */
7795  function delete_post_thumbnail( $post ) {
7796      $post = get_post( $post );
7797      if ( $post ) {
7798          return delete_post_meta( $post->ID, '_thumbnail_id' );
7799      }
7800      return false;
7801  }
7802  
7803  /**
7804   * Deletes auto-drafts for new posts that are > 7 days old.
7805   *
7806   * @since 3.4.0
7807   *
7808   * @global wpdb $wpdb WordPress database abstraction object.
7809   */
7810  function wp_delete_auto_drafts() {
7811      global $wpdb;
7812  
7813      // Cleanup old auto-drafts more than 7 days old.
7814      $old_posts = $wpdb->get_col( "SELECT ID FROM $wpdb->posts WHERE post_status = 'auto-draft' AND DATE_SUB( NOW(), INTERVAL 7 DAY ) > post_date" );
7815      foreach ( (array) $old_posts as $delete ) {
7816          // Force delete.
7817          wp_delete_post( $delete, true );
7818      }
7819  }
7820  
7821  /**
7822   * Queues posts for lazy-loading of term meta.
7823   *
7824   * @since 4.5.0
7825   *
7826   * @param WP_Post[] $posts Array of WP_Post objects.
7827   */
7828  function wp_queue_posts_for_term_meta_lazyload( $posts ) {
7829      $post_type_taxonomies = array();
7830      $prime_post_terms     = array();
7831      foreach ( $posts as $post ) {
7832          if ( ! ( $post instanceof WP_Post ) ) {
7833              continue;
7834          }
7835  
7836          if ( ! isset( $post_type_taxonomies[ $post->post_type ] ) ) {
7837              $post_type_taxonomies[ $post->post_type ] = get_object_taxonomies( $post->post_type );
7838          }
7839  
7840          foreach ( $post_type_taxonomies[ $post->post_type ] as $taxonomy ) {
7841              $prime_post_terms[ $taxonomy ][] = $post->ID;
7842          }
7843      }
7844  
7845      $term_ids = array();
7846      if ( $prime_post_terms ) {
7847          foreach ( $prime_post_terms as $taxonomy => $post_ids ) {
7848              $cached_term_ids = wp_cache_get_multiple( $post_ids, "{$taxonomy}_relationships" );
7849              if ( is_array( $cached_term_ids ) ) {
7850                  $cached_term_ids = array_filter( $cached_term_ids );
7851                  foreach ( $cached_term_ids as $_term_ids ) {
7852                      // Backward compatibility for if a plugin is putting objects into the cache, rather than IDs.
7853                      foreach ( $_term_ids as $term_id ) {
7854                          if ( is_numeric( $term_id ) ) {
7855                              $term_ids[] = (int) $term_id;
7856                          } elseif ( isset( $term_id->term_id ) ) {
7857                              $term_ids[] = (int) $term_id->term_id;
7858                          }
7859                      }
7860                  }
7861              }
7862          }
7863          $term_ids = array_unique( $term_ids );
7864      }
7865  
7866      wp_lazyload_term_meta( $term_ids );
7867  }
7868  
7869  /**
7870   * Updates the custom taxonomies' term counts when a post's status is changed.
7871   *
7872   * For example, default posts term counts (for custom taxonomies) don't include
7873   * private / draft posts.
7874   *
7875   * @since 3.3.0
7876   * @access private
7877   *
7878   * @param string  $new_status New post status.
7879   * @param string  $old_status Old post status.
7880   * @param WP_Post $post       Post object.
7881   */
7882  function _update_term_count_on_transition_post_status( $new_status, $old_status, $post ) {
7883      // Update counts for the post's terms.
7884      foreach ( (array) get_object_taxonomies( $post->post_type ) as $taxonomy ) {
7885          $tt_ids = wp_get_object_terms( $post->ID, $taxonomy, array( 'fields' => 'tt_ids' ) );
7886          wp_update_term_count( $tt_ids, $taxonomy );
7887      }
7888  }
7889  
7890  /**
7891   * Adds any posts from the given IDs to the cache that do not already exist in cache.
7892   *
7893   * @since 3.4.0
7894   * @since 6.1.0 This function is no longer marked as "private".
7895   *
7896   * @see update_post_cache()
7897   * @see update_postmeta_cache()
7898   * @see update_object_term_cache()
7899   *
7900   * @global wpdb $wpdb WordPress database abstraction object.
7901   *
7902   * @param int[] $ids               ID list.
7903   * @param bool  $update_term_cache Optional. Whether to update the term cache. Default true.
7904   * @param bool  $update_meta_cache Optional. Whether to update the meta cache. Default true.
7905   */
7906  function _prime_post_caches( $ids, $update_term_cache = true, $update_meta_cache = true ) {
7907      global $wpdb;
7908  
7909      $non_cached_ids = _get_non_cached_ids( $ids, 'posts' );
7910      if ( ! empty( $non_cached_ids ) ) {
7911          $fresh_posts = $wpdb->get_results( sprintf( "SELECT $wpdb->posts.* FROM $wpdb->posts WHERE ID IN (%s)", implode( ',', $non_cached_ids ) ) );
7912  
7913          if ( $fresh_posts ) {
7914              // Despite the name, update_post_cache() expects an array rather than a single post.
7915              update_post_cache( $fresh_posts );
7916          }
7917      }
7918  
7919      if ( $update_meta_cache ) {
7920          update_postmeta_cache( $ids );
7921      }
7922  
7923      if ( $update_term_cache ) {
7924          $post_types = array_map( 'get_post_type', $ids );
7925          $post_types = array_unique( $post_types );
7926          update_object_term_cache( $ids, $post_types );
7927      }
7928  }
7929  
7930  /**
7931   * Prime the cache containing the parent ID of various post objects.
7932   *
7933   * @global wpdb $wpdb WordPress database abstraction object.
7934   *
7935   * @since 6.4.0
7936   *
7937   * @param int[] $ids ID list.
7938   */
7939  function _prime_post_parent_id_caches( array $ids ) {
7940      global $wpdb;
7941  
7942      $ids = array_filter( $ids, '_validate_cache_id' );
7943      $ids = array_unique( array_map( 'intval', $ids ), SORT_NUMERIC );
7944  
7945      if ( empty( $ids ) ) {
7946          return;
7947      }
7948  
7949      $cache_keys = array();
7950      foreach ( $ids as $id ) {
7951          $cache_keys[ $id ] = 'post_parent:' . (string) $id;
7952      }
7953  
7954      $cached_data = wp_cache_get_multiple( array_values( $cache_keys ), 'posts' );
7955  
7956      $non_cached_ids = array();
7957      foreach ( $cache_keys as $id => $cache_key ) {
7958          if ( false === $cached_data[ $cache_key ] ) {
7959              $non_cached_ids[] = $id;
7960          }
7961      }
7962  
7963      if ( ! empty( $non_cached_ids ) ) {
7964          $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 ) ) );
7965  
7966          if ( $fresh_posts ) {
7967              $post_parent_data = array();
7968              foreach ( $fresh_posts as $fresh_post ) {
7969                  $post_parent_data[ 'post_parent:' . (string) $fresh_post->ID ] = (int) $fresh_post->post_parent;
7970              }
7971  
7972              wp_cache_add_multiple( $post_parent_data, 'posts' );
7973          }
7974      }
7975  }
7976  
7977  /**
7978   * Adds a suffix if any trashed posts have a given slug.
7979   *
7980   * Store its desired (i.e. current) slug so it can try to reclaim it
7981   * if the post is untrashed.
7982   *
7983   * For internal use.
7984   *
7985   * @since 4.5.0
7986   * @access private
7987   *
7988   * @param string $post_name Post slug.
7989   * @param int    $post_id   Optional. Post ID that should be ignored. Default 0.
7990   */
7991  function wp_add_trashed_suffix_to_post_name_for_trashed_posts( $post_name, $post_id = 0 ) {
7992      $trashed_posts_with_desired_slug = get_posts(
7993          array(
7994              'name'         => $post_name,
7995              'post_status'  => 'trash',
7996              'post_type'    => 'any',
7997              'nopaging'     => true,
7998              'post__not_in' => array( $post_id ),
7999          )
8000      );
8001  
8002      if ( ! empty( $trashed_posts_with_desired_slug ) ) {
8003          foreach ( $trashed_posts_with_desired_slug as $_post ) {
8004              wp_add_trashed_suffix_to_post_name_for_post( $_post );
8005          }
8006      }
8007  }
8008  
8009  /**
8010   * Adds a trashed suffix for a given post.
8011   *
8012   * Store its desired (i.e. current) slug so it can try to reclaim it
8013   * if the post is untrashed.
8014   *
8015   * For internal use.
8016   *
8017   * @since 4.5.0
8018   * @access private
8019   *
8020   * @global wpdb $wpdb WordPress database abstraction object.
8021   *
8022   * @param WP_Post $post The post.
8023   * @return string New slug for the post.
8024   */
8025  function wp_add_trashed_suffix_to_post_name_for_post( $post ) {
8026      global $wpdb;
8027  
8028      $post = get_post( $post );
8029  
8030      if ( str_ends_with( $post->post_name, '__trashed' ) ) {
8031          return $post->post_name;
8032      }
8033      add_post_meta( $post->ID, '_wp_desired_post_slug', $post->post_name );
8034      $post_name = _truncate_post_slug( $post->post_name, 191 ) . '__trashed';
8035      $wpdb->update( $wpdb->posts, array( 'post_name' => $post_name ), array( 'ID' => $post->ID ) );
8036      clean_post_cache( $post->ID );
8037      return $post_name;
8038  }
8039  
8040  /**
8041   * Sets the last changed time for the 'posts' cache group.
8042   *
8043   * @since 5.0.0
8044   */
8045  function wp_cache_set_posts_last_changed() {
8046      wp_cache_set_last_changed( 'posts' );
8047  }
8048  
8049  /**
8050   * Gets all available post MIME types for a given post type.
8051   *
8052   * @since 2.5.0
8053   *
8054   * @global wpdb $wpdb WordPress database abstraction object.
8055   *
8056   * @param string $type
8057   * @return string[] An array of MIME types.
8058   */
8059  function get_available_post_mime_types( $type = 'attachment' ) {
8060      global $wpdb;
8061  
8062      /**
8063       * Filters the list of available post MIME types for the given post type.
8064       *
8065       * @since 6.4.0
8066       *
8067       * @param string[]|null $mime_types An array of MIME types. Default null.
8068       * @param string        $type       The post type name. Usually 'attachment' but can be any post type.
8069       */
8070      $mime_types = apply_filters( 'pre_get_available_post_mime_types', null, $type );
8071  
8072      if ( ! is_array( $mime_types ) ) {
8073          $mime_types = $wpdb->get_col( $wpdb->prepare( "SELECT DISTINCT post_mime_type FROM $wpdb->posts WHERE post_type = %s", $type ) );
8074      }
8075  
8076      return $mime_types;
8077  }
8078  
8079  /**
8080   * Retrieves the path to an uploaded image file.
8081   *
8082   * Similar to `get_attached_file()` however some images may have been processed after uploading
8083   * to make them suitable for web use. In this case the attached "full" size file is usually replaced
8084   * with a scaled down version of the original image. This function always returns the path
8085   * to the originally uploaded image file.
8086   *
8087   * @since 5.3.0
8088   * @since 5.4.0 Added the `$unfiltered` parameter.
8089   *
8090   * @param int  $attachment_id Attachment ID.
8091   * @param bool $unfiltered Optional. Passed through to `get_attached_file()`. Default false.
8092   * @return string|false Path to the original image file or false if the attachment is not an image.
8093   */
8094  function wp_get_original_image_path( $attachment_id, $unfiltered = false ) {
8095      if ( ! wp_attachment_is_image( $attachment_id ) ) {
8096          return false;
8097      }
8098  
8099      $image_meta = wp_get_attachment_metadata( $attachment_id );
8100      $image_file = get_attached_file( $attachment_id, $unfiltered );
8101  
8102      if ( empty( $image_meta['original_image'] ) ) {
8103          $original_image = $image_file;
8104      } else {
8105          $original_image = path_join( dirname( $image_file ), $image_meta['original_image'] );
8106      }
8107  
8108      /**
8109       * Filters the path to the original image.
8110       *
8111       * @since 5.3.0
8112       *
8113       * @param string $original_image Path to original image file.
8114       * @param int    $attachment_id  Attachment ID.
8115       */
8116      return apply_filters( 'wp_get_original_image_path', $original_image, $attachment_id );
8117  }
8118  
8119  /**
8120   * Retrieves the URL to an original attachment image.
8121   *
8122   * Similar to `wp_get_attachment_url()` however some images may have been
8123   * processed after uploading. In this case this function returns the URL
8124   * to the originally uploaded image file.
8125   *
8126   * @since 5.3.0
8127   *
8128   * @param int $attachment_id Attachment post ID.
8129   * @return string|false Attachment image URL, false on error or if the attachment is not an image.
8130   */
8131  function wp_get_original_image_url( $attachment_id ) {
8132      if ( ! wp_attachment_is_image( $attachment_id ) ) {
8133          return false;
8134      }
8135  
8136      $image_url = wp_get_attachment_url( $attachment_id );
8137  
8138      if ( ! $image_url ) {
8139          return false;
8140      }
8141  
8142      $image_meta = wp_get_attachment_metadata( $attachment_id );
8143  
8144      if ( empty( $image_meta['original_image'] ) ) {
8145          $original_image_url = $image_url;
8146      } else {
8147          $original_image_url = path_join( dirname( $image_url ), $image_meta['original_image'] );
8148      }
8149  
8150      /**
8151       * Filters the URL to the original attachment image.
8152       *
8153       * @since 5.3.0
8154       *
8155       * @param string $original_image_url URL to original image.
8156       * @param int    $attachment_id      Attachment ID.
8157       */
8158      return apply_filters( 'wp_get_original_image_url', $original_image_url, $attachment_id );
8159  }
8160  
8161  /**
8162   * Filters callback which sets the status of an untrashed post to its previous status.
8163   *
8164   * This can be used as a callback on the `wp_untrash_post_status` filter.
8165   *
8166   * @since 5.6.0
8167   *
8168   * @param string $new_status      The new status of the post being restored.
8169   * @param int    $post_id         The ID of the post being restored.
8170   * @param string $previous_status The status of the post at the point where it was trashed.
8171   * @return string The new status of the post.
8172   */
8173  function wp_untrash_post_set_previous_status( $new_status, $post_id, $previous_status ) {
8174      return $previous_status;
8175  }
8176  
8177  /**
8178   * Returns whether the post can be edited in the block editor.
8179   *
8180   * @since 5.0.0
8181   * @since 6.1.0 Moved to wp-includes from wp-admin.
8182   *
8183   * @param int|WP_Post $post Post ID or WP_Post object.
8184   * @return bool Whether the post can be edited in the block editor.
8185   */
8186  function use_block_editor_for_post( $post ) {
8187      $post = get_post( $post );
8188  
8189      if ( ! $post ) {
8190          return false;
8191      }
8192  
8193      // We're in the meta box loader, so don't use the block editor.
8194      if ( is_admin() && isset( $_GET['meta-box-loader'] ) ) {
8195          check_admin_referer( 'meta-box-loader', 'meta-box-loader-nonce' );
8196          return false;
8197      }
8198  
8199      $use_block_editor = use_block_editor_for_post_type( $post->post_type );
8200  
8201      /**
8202       * Filters whether a post is able to be edited in the block editor.
8203       *
8204       * @since 5.0.0
8205       *
8206       * @param bool    $use_block_editor Whether the post can be edited or not.
8207       * @param WP_Post $post             The post being checked.
8208       */
8209      return apply_filters( 'use_block_editor_for_post', $use_block_editor, $post );
8210  }
8211  
8212  /**
8213   * Returns whether a post type is compatible with the block editor.
8214   *
8215   * The block editor depends on the REST API, and if the post type is not shown in the
8216   * REST API, then it won't work with the block editor.
8217   *
8218   * @since 5.0.0
8219   * @since 6.1.0 Moved to wp-includes from wp-admin.
8220   *
8221   * @param string $post_type The post type.
8222   * @return bool Whether the post type can be edited with the block editor.
8223   */
8224  function use_block_editor_for_post_type( $post_type ) {
8225      if ( ! post_type_exists( $post_type ) ) {
8226          return false;
8227      }
8228  
8229      if ( ! post_type_supports( $post_type, 'editor' ) ) {
8230          return false;
8231      }
8232  
8233      $post_type_object = get_post_type_object( $post_type );
8234      if ( $post_type_object && ! $post_type_object->show_in_rest ) {
8235          return false;
8236      }
8237  
8238      /**
8239       * Filters whether a post is able to be edited in the block editor.
8240       *
8241       * @since 5.0.0
8242       *
8243       * @param bool   $use_block_editor  Whether the post type can be edited or not. Default true.
8244       * @param string $post_type         The post type being checked.
8245       */
8246      return apply_filters( 'use_block_editor_for_post_type', true, $post_type );
8247  }
8248  
8249  /**
8250   * Registers any additional post meta fields.
8251   *
8252   * @since 6.3.0 Adds `wp_pattern_sync_status` meta field to the wp_block post type so an unsynced option can be added.
8253   *
8254   * @link https://github.com/WordPress/gutenberg/pull/51144
8255   */
8256  function wp_create_initial_post_meta() {
8257      register_post_meta(
8258          'wp_block',
8259          'wp_pattern_sync_status',
8260          array(
8261              'sanitize_callback' => 'sanitize_text_field',
8262              'single'            => true,
8263              'type'              => 'string',
8264              'show_in_rest'      => array(
8265                  'schema' => array(
8266                      'type' => 'string',
8267                      'enum' => array( 'partial', 'unsynced' ),
8268                  ),
8269              ),
8270          )
8271      );
8272  }


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