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1 <?php 2 /** 3 * Core Taxonomy API 4 * 5 * @package WordPress 6 * @subpackage Taxonomy 7 */ 8 9 // 10 // Taxonomy registration. 11 // 12 13 /** 14 * Creates the initial taxonomies. 15 * 16 * This function fires twice: in wp-settings.php before plugins are loaded (for 17 * backward compatibility reasons), and again on the {@see 'init'} action. We must 18 * avoid registering rewrite rules before the {@see 'init'} action. 19 * 20 * @since 2.8.0 21 * @since 5.9.0 Added `'wp_template_part_area'` taxonomy. 22 * 23 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 24 */ 25 function create_initial_taxonomies() { 26 global $wp_rewrite; 27 28 WP_Taxonomy::reset_default_labels(); 29 30 if ( ! did_action( 'init' ) ) { 31 $rewrite = array( 32 'category' => false, 33 'post_tag' => false, 34 'post_format' => false, 35 ); 36 } else { 37 38 /** 39 * Filters the post formats rewrite base. 40 * 41 * @since 3.1.0 42 * 43 * @param string $context Context of the rewrite base. Default 'type'. 44 */ 45 $post_format_base = apply_filters( 'post_format_rewrite_base', 'type' ); 46 $rewrite = array( 47 'category' => array( 48 'hierarchical' => true, 49 'slug' => get_option( 'category_base' ) ? get_option( 'category_base' ) : 'category', 50 'with_front' => ! get_option( 'category_base' ) || $wp_rewrite->using_index_permalinks(), 51 'ep_mask' => EP_CATEGORIES, 52 ), 53 'post_tag' => array( 54 'hierarchical' => false, 55 'slug' => get_option( 'tag_base' ) ? get_option( 'tag_base' ) : 'tag', 56 'with_front' => ! get_option( 'tag_base' ) || $wp_rewrite->using_index_permalinks(), 57 'ep_mask' => EP_TAGS, 58 ), 59 'post_format' => $post_format_base ? array( 'slug' => $post_format_base ) : false, 60 ); 61 } 62 63 register_taxonomy( 64 'category', 65 'post', 66 array( 67 'hierarchical' => true, 68 'query_var' => 'category_name', 69 'rewrite' => $rewrite['category'], 70 'public' => true, 71 'show_ui' => true, 72 'show_admin_column' => true, 73 '_builtin' => true, 74 'capabilities' => array( 75 'manage_terms' => 'manage_categories', 76 'edit_terms' => 'edit_categories', 77 'delete_terms' => 'delete_categories', 78 'assign_terms' => 'assign_categories', 79 ), 80 'show_in_rest' => true, 81 'rest_base' => 'categories', 82 'rest_controller_class' => 'WP_REST_Terms_Controller', 83 ) 84 ); 85 86 register_taxonomy( 87 'post_tag', 88 'post', 89 array( 90 'hierarchical' => false, 91 'query_var' => 'tag', 92 'rewrite' => $rewrite['post_tag'], 93 'public' => true, 94 'show_ui' => true, 95 'show_admin_column' => true, 96 '_builtin' => true, 97 'capabilities' => array( 98 'manage_terms' => 'manage_post_tags', 99 'edit_terms' => 'edit_post_tags', 100 'delete_terms' => 'delete_post_tags', 101 'assign_terms' => 'assign_post_tags', 102 ), 103 'show_in_rest' => true, 104 'rest_base' => 'tags', 105 'rest_controller_class' => 'WP_REST_Terms_Controller', 106 ) 107 ); 108 109 register_taxonomy( 110 'nav_menu', 111 'nav_menu_item', 112 array( 113 'public' => false, 114 'hierarchical' => false, 115 'labels' => array( 116 'name' => __( 'Navigation Menus' ), 117 'singular_name' => __( 'Navigation Menu' ), 118 ), 119 'query_var' => false, 120 'rewrite' => false, 121 'show_ui' => false, 122 '_builtin' => true, 123 'show_in_nav_menus' => false, 124 'capabilities' => array( 125 'manage_terms' => 'edit_theme_options', 126 'edit_terms' => 'edit_theme_options', 127 'delete_terms' => 'edit_theme_options', 128 'assign_terms' => 'edit_theme_options', 129 ), 130 'show_in_rest' => true, 131 'rest_base' => 'menus', 132 'rest_controller_class' => 'WP_REST_Menus_Controller', 133 ) 134 ); 135 136 register_taxonomy( 137 'link_category', 138 'link', 139 array( 140 'hierarchical' => false, 141 'labels' => array( 142 'name' => __( 'Link Categories' ), 143 'singular_name' => __( 'Link Category' ), 144 'search_items' => __( 'Search Link Categories' ), 145 'popular_items' => null, 146 'all_items' => __( 'All Link Categories' ), 147 'edit_item' => __( 'Edit Link Category' ), 148 'update_item' => __( 'Update Link Category' ), 149 'add_new_item' => __( 'Add Link Category' ), 150 'new_item_name' => __( 'New Link Category Name' ), 151 'separate_items_with_commas' => null, 152 'add_or_remove_items' => null, 153 'choose_from_most_used' => null, 154 'back_to_items' => __( '← Go to Link Categories' ), 155 ), 156 'capabilities' => array( 157 'manage_terms' => 'manage_links', 158 'edit_terms' => 'manage_links', 159 'delete_terms' => 'manage_links', 160 'assign_terms' => 'manage_links', 161 ), 162 'query_var' => false, 163 'rewrite' => false, 164 'public' => false, 165 'show_ui' => true, 166 '_builtin' => true, 167 ) 168 ); 169 170 register_taxonomy( 171 'post_format', 172 'post', 173 array( 174 'public' => true, 175 'hierarchical' => false, 176 'labels' => array( 177 'name' => _x( 'Formats', 'post format' ), 178 'singular_name' => _x( 'Format', 'post format' ), 179 ), 180 'query_var' => true, 181 'rewrite' => $rewrite['post_format'], 182 'show_ui' => false, 183 '_builtin' => true, 184 'show_in_nav_menus' => current_theme_supports( 'post-formats' ), 185 ) 186 ); 187 188 register_taxonomy( 189 'wp_theme', 190 array( 'wp_template', 'wp_template_part', 'wp_global_styles' ), 191 array( 192 'public' => false, 193 'hierarchical' => false, 194 'labels' => array( 195 'name' => __( 'Themes' ), 196 'singular_name' => __( 'Theme' ), 197 ), 198 'query_var' => false, 199 'rewrite' => false, 200 'show_ui' => false, 201 '_builtin' => true, 202 'show_in_nav_menus' => false, 203 'show_in_rest' => false, 204 ) 205 ); 206 207 register_taxonomy( 208 'wp_template_part_area', 209 array( 'wp_template_part' ), 210 array( 211 'public' => false, 212 'hierarchical' => false, 213 'labels' => array( 214 'name' => __( 'Template Part Areas' ), 215 'singular_name' => __( 'Template Part Area' ), 216 ), 217 'query_var' => false, 218 'rewrite' => false, 219 'show_ui' => false, 220 '_builtin' => true, 221 'show_in_nav_menus' => false, 222 'show_in_rest' => false, 223 ) 224 ); 225 226 register_taxonomy( 227 'wp_pattern_category', 228 array( 'wp_block' ), 229 array( 230 'public' => false, 231 'publicly_queryable' => false, 232 'hierarchical' => false, 233 'labels' => array( 234 'name' => _x( 'Pattern Categories', 'taxonomy general name' ), 235 'singular_name' => _x( 'Pattern Category', 'taxonomy singular name' ), 236 'add_new_item' => __( 'Add Category' ), 237 'add_or_remove_items' => __( 'Add or remove pattern categories' ), 238 'back_to_items' => __( '← Go to Pattern Categories' ), 239 'choose_from_most_used' => __( 'Choose from the most used pattern categories' ), 240 'edit_item' => __( 'Edit Pattern Category' ), 241 'item_link' => __( 'Pattern Category Link' ), 242 'item_link_description' => __( 'A link to a pattern category.' ), 243 'items_list' => __( 'Pattern Categories list' ), 244 'items_list_navigation' => __( 'Pattern Categories list navigation' ), 245 'new_item_name' => __( 'New Pattern Category Name' ), 246 'no_terms' => __( 'No pattern categories' ), 247 'not_found' => __( 'No pattern categories found.' ), 248 'popular_items' => __( 'Popular Pattern Categories' ), 249 'search_items' => __( 'Search Pattern Categories' ), 250 'separate_items_with_commas' => __( 'Separate pattern categories with commas' ), 251 'update_item' => __( 'Update Pattern Category' ), 252 'view_item' => __( 'View Pattern Category' ), 253 ), 254 'query_var' => false, 255 'rewrite' => false, 256 'show_ui' => true, 257 '_builtin' => true, 258 'show_in_nav_menus' => false, 259 'show_in_rest' => true, 260 'show_admin_column' => true, 261 'show_tagcloud' => false, 262 ) 263 ); 264 } 265 266 /** 267 * Retrieves a list of registered taxonomy names or objects. 268 * 269 * @since 3.0.0 270 * 271 * @global WP_Taxonomy[] $wp_taxonomies The registered taxonomies. 272 * 273 * @param array $args Optional. An array of `key => value` arguments to match against the taxonomy objects. 274 * Default empty array. 275 * @param string $output Optional. The type of output to return in the array. Either 'names' 276 * or 'objects'. Default 'names'. 277 * @param string $operator Optional. The logical operation to perform. Accepts 'and' or 'or'. 'or' means only 278 * one element from the array needs to match; 'and' means all elements must match. 279 * Default 'and'. 280 * @return string[]|WP_Taxonomy[] An array of taxonomy names or objects. 281 */ 282 function get_taxonomies( $args = array(), $output = 'names', $operator = 'and' ) { 283 global $wp_taxonomies; 284 285 $field = ( 'names' === $output ) ? 'name' : false; 286 287 return wp_filter_object_list( $wp_taxonomies, $args, $operator, $field ); 288 } 289 290 /** 291 * Returns the names or objects of the taxonomies which are registered for the requested object or object type, 292 * such as a post object or post type name. 293 * 294 * Example: 295 * 296 * $taxonomies = get_object_taxonomies( 'post' ); 297 * 298 * This results in: 299 * 300 * Array( 'category', 'post_tag' ) 301 * 302 * @since 2.3.0 303 * 304 * @global WP_Taxonomy[] $wp_taxonomies The registered taxonomies. 305 * 306 * @param string|string[]|WP_Post $object_type Name of the type of taxonomy object, or an object (row from posts). 307 * @param string $output Optional. The type of output to return in the array. Accepts either 308 * 'names' or 'objects'. Default 'names'. 309 * @return string[]|WP_Taxonomy[] The names or objects of all taxonomies of `$object_type`. 310 */ 311 function get_object_taxonomies( $object_type, $output = 'names' ) { 312 global $wp_taxonomies; 313 314 if ( is_object( $object_type ) ) { 315 if ( 'attachment' === $object_type->post_type ) { 316 return get_attachment_taxonomies( $object_type, $output ); 317 } 318 $object_type = $object_type->post_type; 319 } 320 321 $object_type = (array) $object_type; 322 323 $taxonomies = array(); 324 foreach ( (array) $wp_taxonomies as $tax_name => $tax_obj ) { 325 if ( array_intersect( $object_type, (array) $tax_obj->object_type ) ) { 326 if ( 'names' === $output ) { 327 $taxonomies[] = $tax_name; 328 } else { 329 $taxonomies[ $tax_name ] = $tax_obj; 330 } 331 } 332 } 333 334 return $taxonomies; 335 } 336 337 /** 338 * Retrieves the taxonomy object of $taxonomy. 339 * 340 * The get_taxonomy function will first check that the parameter string given 341 * is a taxonomy object and if it is, it will return it. 342 * 343 * @since 2.3.0 344 * 345 * @global WP_Taxonomy[] $wp_taxonomies The registered taxonomies. 346 * 347 * @param string $taxonomy Name of taxonomy object to return. 348 * @return WP_Taxonomy|false The taxonomy object or false if $taxonomy doesn't exist. 349 */ 350 function get_taxonomy( $taxonomy ) { 351 global $wp_taxonomies; 352 353 if ( ! taxonomy_exists( $taxonomy ) ) { 354 return false; 355 } 356 357 return $wp_taxonomies[ $taxonomy ]; 358 } 359 360 /** 361 * Determines whether the taxonomy name exists. 362 * 363 * Formerly is_taxonomy(), introduced in 2.3.0. 364 * 365 * For more information on this and similar theme functions, check out 366 * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/ 367 * Conditional Tags} article in the Theme Developer Handbook. 368 * 369 * @since 3.0.0 370 * 371 * @global WP_Taxonomy[] $wp_taxonomies The registered taxonomies. 372 * 373 * @param string $taxonomy Name of taxonomy object. 374 * @return bool Whether the taxonomy exists. 375 */ 376 function taxonomy_exists( $taxonomy ) { 377 global $wp_taxonomies; 378 379 return is_string( $taxonomy ) && isset( $wp_taxonomies[ $taxonomy ] ); 380 } 381 382 /** 383 * Determines whether the taxonomy object is hierarchical. 384 * 385 * Checks to make sure that the taxonomy is an object first. Then Gets the 386 * object, and finally returns the hierarchical value in the object. 387 * 388 * A false return value might also mean that the taxonomy does not exist. 389 * 390 * For more information on this and similar theme functions, check out 391 * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/ 392 * Conditional Tags} article in the Theme Developer Handbook. 393 * 394 * @since 2.3.0 395 * 396 * @param string $taxonomy Name of taxonomy object. 397 * @return bool Whether the taxonomy is hierarchical. 398 */ 399 function is_taxonomy_hierarchical( $taxonomy ) { 400 if ( ! taxonomy_exists( $taxonomy ) ) { 401 return false; 402 } 403 404 $taxonomy = get_taxonomy( $taxonomy ); 405 return $taxonomy->hierarchical; 406 } 407 408 /** 409 * Creates or modifies a taxonomy object. 410 * 411 * Note: Do not use before the {@see 'init'} hook. 412 * 413 * A simple function for creating or modifying a taxonomy object based on 414 * the parameters given. If modifying an existing taxonomy object, note 415 * that the `$object_type` value from the original registration will be 416 * overwritten. 417 * 418 * @since 2.3.0 419 * @since 4.2.0 Introduced `show_in_quick_edit` argument. 420 * @since 4.4.0 The `show_ui` argument is now enforced on the term editing screen. 421 * @since 4.4.0 The `public` argument now controls whether the taxonomy can be queried on the front end. 422 * @since 4.5.0 Introduced `publicly_queryable` argument. 423 * @since 4.7.0 Introduced `show_in_rest`, 'rest_base' and 'rest_controller_class' 424 * arguments to register the taxonomy in REST API. 425 * @since 5.1.0 Introduced `meta_box_sanitize_cb` argument. 426 * @since 5.4.0 Added the registered taxonomy object as a return value. 427 * @since 5.5.0 Introduced `default_term` argument. 428 * @since 5.9.0 Introduced `rest_namespace` argument. 429 * 430 * @global WP_Taxonomy[] $wp_taxonomies Registered taxonomies. 431 * 432 * @param string $taxonomy Taxonomy key. Must not exceed 32 characters and may only contain 433 * lowercase alphanumeric characters, dashes, and underscores. See sanitize_key(). 434 * @param array|string $object_type Object type or array of object types with which the taxonomy should be associated. 435 * @param array|string $args { 436 * Optional. Array or query string of arguments for registering a taxonomy. 437 * 438 * @type string[] $labels An array of labels for this taxonomy. By default, Tag labels are 439 * used for non-hierarchical taxonomies, and Category labels are used 440 * for hierarchical taxonomies. See accepted values in 441 * get_taxonomy_labels(). Default empty array. 442 * @type string $description A short descriptive summary of what the taxonomy is for. Default empty. 443 * @type bool $public Whether a taxonomy is intended for use publicly either via 444 * the admin interface or by front-end users. The default settings 445 * of `$publicly_queryable`, `$show_ui`, and `$show_in_nav_menus` 446 * are inherited from `$public`. 447 * @type bool $publicly_queryable Whether the taxonomy is publicly queryable. 448 * If not set, the default is inherited from `$public` 449 * @type bool $hierarchical Whether the taxonomy is hierarchical. Default false. 450 * @type bool $show_ui Whether to generate and allow a UI for managing terms in this taxonomy in 451 * the admin. If not set, the default is inherited from `$public` 452 * (default true). 453 * @type bool $show_in_menu Whether to show the taxonomy in the admin menu. If true, the taxonomy is 454 * shown as a submenu of the object type menu. If false, no menu is shown. 455 * `$show_ui` must be true. If not set, default is inherited from `$show_ui` 456 * (default true). 457 * @type bool $show_in_nav_menus Makes this taxonomy available for selection in navigation menus. If not 458 * set, the default is inherited from `$public` (default true). 459 * @type bool $show_in_rest Whether to include the taxonomy in the REST API. Set this to true 460 * for the taxonomy to be available in the block editor. 461 * @type string $rest_base To change the base url of REST API route. Default is $taxonomy. 462 * @type string $rest_namespace To change the namespace URL of REST API route. Default is wp/v2. 463 * @type string $rest_controller_class REST API Controller class name. Default is 'WP_REST_Terms_Controller'. 464 * @type bool $show_tagcloud Whether to list the taxonomy in the Tag Cloud Widget controls. If not set, 465 * the default is inherited from `$show_ui` (default true). 466 * @type bool $show_in_quick_edit Whether to show the taxonomy in the quick/bulk edit panel. It not set, 467 * the default is inherited from `$show_ui` (default true). 468 * @type bool $show_admin_column Whether to display a column for the taxonomy on its post type listing 469 * screens. Default false. 470 * @type bool|callable $meta_box_cb Provide a callback function for the meta box display. If not set, 471 * post_categories_meta_box() is used for hierarchical taxonomies, and 472 * post_tags_meta_box() is used for non-hierarchical. If false, no meta 473 * box is shown. 474 * @type callable $meta_box_sanitize_cb Callback function for sanitizing taxonomy data saved from a meta 475 * box. If no callback is defined, an appropriate one is determined 476 * based on the value of `$meta_box_cb`. 477 * @type string[] $capabilities { 478 * Array of capabilities for this taxonomy. 479 * 480 * @type string $manage_terms Default 'manage_categories'. 481 * @type string $edit_terms Default 'manage_categories'. 482 * @type string $delete_terms Default 'manage_categories'. 483 * @type string $assign_terms Default 'edit_posts'. 484 * } 485 * @type bool|array $rewrite { 486 * Triggers the handling of rewrites for this taxonomy. Default true, using $taxonomy as slug. To prevent 487 * rewrite, set to false. To specify rewrite rules, an array can be passed with any of these keys: 488 * 489 * @type string $slug Customize the permastruct slug. Default `$taxonomy` key. 490 * @type bool $with_front Should the permastruct be prepended with WP_Rewrite::$front. Default true. 491 * @type bool $hierarchical Either hierarchical rewrite tag or not. Default false. 492 * @type int $ep_mask Assign an endpoint mask. Default `EP_NONE`. 493 * } 494 * @type string|bool $query_var Sets the query var key for this taxonomy. Default `$taxonomy` key. If 495 * false, a taxonomy cannot be loaded at `?{query_var}={term_slug}`. If a 496 * string, the query `?{query_var}={term_slug}` will be valid. 497 * @type callable $update_count_callback Works much like a hook, in that it will be called when the count is 498 * updated. Default _update_post_term_count() for taxonomies attached 499 * to post types, which confirms that the objects are published before 500 * counting them. Default _update_generic_term_count() for taxonomies 501 * attached to other object types, such as users. 502 * @type string|array $default_term { 503 * Default term to be used for the taxonomy. 504 * 505 * @type string $name Name of default term. 506 * @type string $slug Slug for default term. Default empty. 507 * @type string $description Description for default term. Default empty. 508 * } 509 * @type bool $sort Whether terms in this taxonomy should be sorted in the order they are 510 * provided to `wp_set_object_terms()`. Default null which equates to false. 511 * @type array $args Array of arguments to automatically use inside `wp_get_object_terms()` 512 * for this taxonomy. 513 * @type bool $_builtin This taxonomy is a "built-in" taxonomy. INTERNAL USE ONLY! 514 * Default false. 515 * } 516 * @return WP_Taxonomy|WP_Error The registered taxonomy object on success, WP_Error object on failure. 517 */ 518 function register_taxonomy( $taxonomy, $object_type, $args = array() ) { 519 global $wp_taxonomies; 520 521 if ( ! is_array( $wp_taxonomies ) ) { 522 $wp_taxonomies = array(); 523 } 524 525 $args = wp_parse_args( $args ); 526 527 if ( empty( $taxonomy ) || strlen( $taxonomy ) > 32 ) { 528 _doing_it_wrong( __FUNCTION__, __( 'Taxonomy names must be between 1 and 32 characters in length.' ), '4.2.0' ); 529 return new WP_Error( 'taxonomy_length_invalid', __( 'Taxonomy names must be between 1 and 32 characters in length.' ) ); 530 } 531 532 $taxonomy_object = new WP_Taxonomy( $taxonomy, $object_type, $args ); 533 $taxonomy_object->add_rewrite_rules(); 534 535 $wp_taxonomies[ $taxonomy ] = $taxonomy_object; 536 537 $taxonomy_object->add_hooks(); 538 539 // Add default term. 540 if ( ! empty( $taxonomy_object->default_term ) ) { 541 $term = term_exists( $taxonomy_object->default_term['name'], $taxonomy ); 542 if ( $term ) { 543 update_option( 'default_term_' . $taxonomy_object->name, $term['term_id'] ); 544 } else { 545 $term = wp_insert_term( 546 $taxonomy_object->default_term['name'], 547 $taxonomy, 548 array( 549 'slug' => sanitize_title( $taxonomy_object->default_term['slug'] ), 550 'description' => $taxonomy_object->default_term['description'], 551 ) 552 ); 553 554 // Update `term_id` in options. 555 if ( ! is_wp_error( $term ) ) { 556 update_option( 'default_term_' . $taxonomy_object->name, $term['term_id'] ); 557 } 558 } 559 } 560 561 /** 562 * Fires after a taxonomy is registered. 563 * 564 * @since 3.3.0 565 * 566 * @param string $taxonomy Taxonomy slug. 567 * @param array|string $object_type Object type or array of object types. 568 * @param array $args Array of taxonomy registration arguments. 569 */ 570 do_action( 'registered_taxonomy', $taxonomy, $object_type, (array) $taxonomy_object ); 571 572 /** 573 * Fires after a specific taxonomy is registered. 574 * 575 * The dynamic portion of the filter name, `$taxonomy`, refers to the taxonomy key. 576 * 577 * Possible hook names include: 578 * 579 * - `registered_taxonomy_category` 580 * - `registered_taxonomy_post_tag` 581 * 582 * @since 6.0.0 583 * 584 * @param string $taxonomy Taxonomy slug. 585 * @param array|string $object_type Object type or array of object types. 586 * @param array $args Array of taxonomy registration arguments. 587 */ 588 do_action( "registered_taxonomy_{$taxonomy}", $taxonomy, $object_type, (array) $taxonomy_object ); 589 590 return $taxonomy_object; 591 } 592 593 /** 594 * Unregisters a taxonomy. 595 * 596 * Can not be used to unregister built-in taxonomies. 597 * 598 * @since 4.5.0 599 * 600 * @global WP_Taxonomy[] $wp_taxonomies List of taxonomies. 601 * 602 * @param string $taxonomy Taxonomy name. 603 * @return true|WP_Error True on success, WP_Error on failure or if the taxonomy doesn't exist. 604 */ 605 function unregister_taxonomy( $taxonomy ) { 606 global $wp_taxonomies; 607 608 if ( ! taxonomy_exists( $taxonomy ) ) { 609 return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy.' ) ); 610 } 611 612 $taxonomy_object = get_taxonomy( $taxonomy ); 613 614 // Do not allow unregistering internal taxonomies. 615 if ( $taxonomy_object->_builtin ) { 616 return new WP_Error( 'invalid_taxonomy', __( 'Unregistering a built-in taxonomy is not allowed.' ) ); 617 } 618 619 $taxonomy_object->remove_rewrite_rules(); 620 $taxonomy_object->remove_hooks(); 621 622 // Remove the taxonomy. 623 unset( $wp_taxonomies[ $taxonomy ] ); 624 625 /** 626 * Fires after a taxonomy is unregistered. 627 * 628 * @since 4.5.0 629 * 630 * @param string $taxonomy Taxonomy name. 631 */ 632 do_action( 'unregistered_taxonomy', $taxonomy ); 633 634 return true; 635 } 636 637 /** 638 * Builds an object with all taxonomy labels out of a taxonomy object. 639 * 640 * @since 3.0.0 641 * @since 4.3.0 Added the `no_terms` label. 642 * @since 4.4.0 Added the `items_list_navigation` and `items_list` labels. 643 * @since 4.9.0 Added the `most_used` and `back_to_items` labels. 644 * @since 5.7.0 Added the `filter_by_item` label. 645 * @since 5.8.0 Added the `item_link` and `item_link_description` labels. 646 * @since 5.9.0 Added the `name_field_description`, `slug_field_description`, 647 * `parent_field_description`, and `desc_field_description` labels. 648 * @since 6.6.0 Added the `template_name` label. 649 * 650 * @param WP_Taxonomy $tax Taxonomy object. 651 * @return object { 652 * Taxonomy labels object. The first default value is for non-hierarchical taxonomies 653 * (like tags) and the second one is for hierarchical taxonomies (like categories). 654 * 655 * @type string $name General name for the taxonomy, usually plural. The same 656 * as and overridden by `$tax->label`. Default 'Tags'/'Categories'. 657 * @type string $singular_name Name for one object of this taxonomy. Default 'Tag'/'Category'. 658 * @type string $search_items Default 'Search Tags'/'Search Categories'. 659 * @type string $popular_items This label is only used for non-hierarchical taxonomies. 660 * Default 'Popular Tags'. 661 * @type string $all_items Default 'All Tags'/'All Categories'. 662 * @type string $parent_item This label is only used for hierarchical taxonomies. Default 663 * 'Parent Category'. 664 * @type string $parent_item_colon The same as `parent_item`, but with colon `:` in the end. 665 * @type string $name_field_description Description for the Name field on Edit Tags screen. 666 * Default 'The name is how it appears on your site'. 667 * @type string $slug_field_description Description for the Slug field on Edit Tags screen. 668 * Default 'The “slug” is the URL-friendly version 669 * of the name. It is usually all lowercase and contains 670 * only letters, numbers, and hyphens'. 671 * @type string $parent_field_description Description for the Parent field on Edit Tags screen. 672 * Default 'Assign a parent term to create a hierarchy. 673 * The term Jazz, for example, would be the parent 674 * of Bebop and Big Band'. 675 * @type string $desc_field_description Description for the Description field on Edit Tags screen. 676 * Default 'The description is not prominent by default; 677 * however, some themes may show it'. 678 * @type string $edit_item Default 'Edit Tag'/'Edit Category'. 679 * @type string $view_item Default 'View Tag'/'View Category'. 680 * @type string $update_item Default 'Update Tag'/'Update Category'. 681 * @type string $add_new_item Default 'Add Tag'/'Add Category'. 682 * @type string $new_item_name Default 'New Tag Name'/'New Category Name'. 683 * @type string $template_name Default 'Tag Archives'/'Category Archives'. 684 * @type string $separate_items_with_commas This label is only used for non-hierarchical taxonomies. Default 685 * 'Separate tags with commas', used in the meta box. 686 * @type string $add_or_remove_items This label is only used for non-hierarchical taxonomies. Default 687 * 'Add or remove tags', used in the meta box when JavaScript 688 * is disabled. 689 * @type string $choose_from_most_used This label is only used on non-hierarchical taxonomies. Default 690 * 'Choose from the most used tags', used in the meta box. 691 * @type string $not_found Default 'No tags found'/'No categories found', used in 692 * the meta box and taxonomy list table. 693 * @type string $no_terms Default 'No tags'/'No categories', used in the posts and media 694 * list tables. 695 * @type string $filter_by_item This label is only used for hierarchical taxonomies. Default 696 * 'Filter by category', used in the posts list table. 697 * @type string $items_list_navigation Label for the table pagination hidden heading. 698 * @type string $items_list Label for the table hidden heading. 699 * @type string $most_used Title for the Most Used tab. Default 'Most Used'. 700 * @type string $back_to_items Label displayed after a term has been updated. 701 * @type string $item_link Used in the block editor. Title for a navigation link block variation. 702 * Default 'Tag Link'/'Category Link'. 703 * @type string $item_link_description Used in the block editor. Description for a navigation link block 704 * variation. Default 'A link to a tag'/'A link to a category'. 705 * } 706 */ 707 function get_taxonomy_labels( $tax ) { 708 $tax->labels = (array) $tax->labels; 709 710 if ( isset( $tax->helps ) && empty( $tax->labels['separate_items_with_commas'] ) ) { 711 $tax->labels['separate_items_with_commas'] = $tax->helps; 712 } 713 714 if ( isset( $tax->no_tagcloud ) && empty( $tax->labels['not_found'] ) ) { 715 $tax->labels['not_found'] = $tax->no_tagcloud; 716 } 717 718 $nohier_vs_hier_defaults = WP_Taxonomy::get_default_labels(); 719 720 $nohier_vs_hier_defaults['menu_name'] = $nohier_vs_hier_defaults['name']; 721 722 $labels = _get_custom_object_labels( $tax, $nohier_vs_hier_defaults ); 723 724 if ( ! isset( $tax->labels->template_name ) && isset( $labels->singular_name ) ) { 725 /* translators: %s: Taxonomy name. */ 726 $labels->template_name = sprintf( _x( '%s Archives', 'taxonomy template name' ), $labels->singular_name ); 727 } 728 729 $taxonomy = $tax->name; 730 731 $default_labels = clone $labels; 732 733 /** 734 * Filters the labels of a specific taxonomy. 735 * 736 * The dynamic portion of the hook name, `$taxonomy`, refers to the taxonomy slug. 737 * 738 * Possible hook names include: 739 * 740 * - `taxonomy_labels_category` 741 * - `taxonomy_labels_post_tag` 742 * 743 * @since 4.4.0 744 * 745 * @see get_taxonomy_labels() for the full list of taxonomy labels. 746 * 747 * @param object $labels Object with labels for the taxonomy as member variables. 748 */ 749 $labels = apply_filters( "taxonomy_labels_{$taxonomy}", $labels ); 750 751 // Ensure that the filtered labels contain all required default values. 752 $labels = (object) array_merge( (array) $default_labels, (array) $labels ); 753 754 return $labels; 755 } 756 757 /** 758 * Adds an already registered taxonomy to an object type. 759 * 760 * @since 3.0.0 761 * 762 * @global WP_Taxonomy[] $wp_taxonomies The registered taxonomies. 763 * 764 * @param string $taxonomy Name of taxonomy object. 765 * @param string $object_type Name of the object type. 766 * @return bool True if successful, false if not. 767 */ 768 function register_taxonomy_for_object_type( $taxonomy, $object_type ) { 769 global $wp_taxonomies; 770 771 if ( ! isset( $wp_taxonomies[ $taxonomy ] ) ) { 772 return false; 773 } 774 775 if ( ! get_post_type_object( $object_type ) ) { 776 return false; 777 } 778 779 if ( ! in_array( $object_type, $wp_taxonomies[ $taxonomy ]->object_type, true ) ) { 780 $wp_taxonomies[ $taxonomy ]->object_type[] = $object_type; 781 } 782 783 // Filter out empties. 784 $wp_taxonomies[ $taxonomy ]->object_type = array_filter( $wp_taxonomies[ $taxonomy ]->object_type ); 785 786 /** 787 * Fires after a taxonomy is registered for an object type. 788 * 789 * @since 5.1.0 790 * 791 * @param string $taxonomy Taxonomy name. 792 * @param string $object_type Name of the object type. 793 */ 794 do_action( 'registered_taxonomy_for_object_type', $taxonomy, $object_type ); 795 796 return true; 797 } 798 799 /** 800 * Removes an already registered taxonomy from an object type. 801 * 802 * @since 3.7.0 803 * 804 * @global WP_Taxonomy[] $wp_taxonomies The registered taxonomies. 805 * 806 * @param string $taxonomy Name of taxonomy object. 807 * @param string $object_type Name of the object type. 808 * @return bool True if successful, false if not. 809 */ 810 function unregister_taxonomy_for_object_type( $taxonomy, $object_type ) { 811 global $wp_taxonomies; 812 813 if ( ! isset( $wp_taxonomies[ $taxonomy ] ) ) { 814 return false; 815 } 816 817 if ( ! get_post_type_object( $object_type ) ) { 818 return false; 819 } 820 821 $key = array_search( $object_type, $wp_taxonomies[ $taxonomy ]->object_type, true ); 822 if ( false === $key ) { 823 return false; 824 } 825 826 unset( $wp_taxonomies[ $taxonomy ]->object_type[ $key ] ); 827 828 /** 829 * Fires after a taxonomy is unregistered for an object type. 830 * 831 * @since 5.1.0 832 * 833 * @param string $taxonomy Taxonomy name. 834 * @param string $object_type Name of the object type. 835 */ 836 do_action( 'unregistered_taxonomy_for_object_type', $taxonomy, $object_type ); 837 838 return true; 839 } 840 841 // 842 // Term API. 843 // 844 845 /** 846 * Retrieves object IDs of valid taxonomy and term. 847 * 848 * The strings of `$taxonomies` must exist before this function will continue. 849 * On failure of finding a valid taxonomy, it will return a WP_Error. 850 * 851 * The `$terms` aren't checked the same as `$taxonomies`, but still need to exist 852 * for object IDs to be returned. 853 * 854 * It is possible to change the order that object IDs are returned by using `$args` 855 * with either ASC or DESC array. The value should be in the key named 'order'. 856 * 857 * @since 2.3.0 858 * 859 * @global wpdb $wpdb WordPress database abstraction object. 860 * 861 * @param int|int[] $term_ids Term ID or array of term IDs of terms that will be used. 862 * @param string|string[] $taxonomies String of taxonomy name or Array of string values of taxonomy names. 863 * @param array|string $args { 864 * Change the order of the object IDs. 865 * 866 * @type string $order Order to retrieve terms. Accepts 'ASC' or 'DESC'. Default 'ASC'. 867 * } 868 * @return string[]|WP_Error An array of object IDs as numeric strings on success, 869 * WP_Error if the taxonomy does not exist. 870 */ 871 function get_objects_in_term( $term_ids, $taxonomies, $args = array() ) { 872 global $wpdb; 873 874 if ( ! is_array( $term_ids ) ) { 875 $term_ids = array( $term_ids ); 876 } 877 if ( ! is_array( $taxonomies ) ) { 878 $taxonomies = array( $taxonomies ); 879 } 880 foreach ( (array) $taxonomies as $taxonomy ) { 881 if ( ! taxonomy_exists( $taxonomy ) ) { 882 return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy.' ) ); 883 } 884 } 885 886 $defaults = array( 'order' => 'ASC' ); 887 $args = wp_parse_args( $args, $defaults ); 888 889 $order = ( 'desc' === strtolower( $args['order'] ) ) ? 'DESC' : 'ASC'; 890 891 $term_ids = array_map( 'intval', $term_ids ); 892 893 $taxonomies = "'" . implode( "', '", array_map( 'esc_sql', $taxonomies ) ) . "'"; 894 $term_ids = "'" . implode( "', '", $term_ids ) . "'"; 895 896 $sql = "SELECT tr.object_id FROM $wpdb->term_relationships AS tr INNER JOIN $wpdb->term_taxonomy AS tt ON tr.term_taxonomy_id = tt.term_taxonomy_id WHERE tt.taxonomy IN ($taxonomies) AND tt.term_id IN ($term_ids) ORDER BY tr.object_id $order"; 897 898 $last_changed = wp_cache_get_last_changed( 'terms' ); 899 $cache_key = 'get_objects_in_term:' . md5( $sql ) . ":$last_changed"; 900 $cache = wp_cache_get( $cache_key, 'term-queries' ); 901 if ( false === $cache ) { 902 $object_ids = $wpdb->get_col( $sql ); 903 wp_cache_set( $cache_key, $object_ids, 'term-queries' ); 904 } else { 905 $object_ids = (array) $cache; 906 } 907 908 if ( ! $object_ids ) { 909 return array(); 910 } 911 return $object_ids; 912 } 913 914 /** 915 * Given a taxonomy query, generates SQL to be appended to a main query. 916 * 917 * @since 3.1.0 918 * 919 * @see WP_Tax_Query 920 * 921 * @param array $tax_query A compact tax query 922 * @param string $primary_table 923 * @param string $primary_id_column 924 * @return string[] 925 */ 926 function get_tax_sql( $tax_query, $primary_table, $primary_id_column ) { 927 $tax_query_obj = new WP_Tax_Query( $tax_query ); 928 return $tax_query_obj->get_sql( $primary_table, $primary_id_column ); 929 } 930 931 /** 932 * Gets all term data from database by term ID. 933 * 934 * The usage of the get_term function is to apply filters to a term object. It 935 * is possible to get a term object from the database before applying the 936 * filters. 937 * 938 * $term ID must be part of $taxonomy, to get from the database. Failure, might 939 * be able to be captured by the hooks. Failure would be the same value as $wpdb 940 * returns for the get_row method. 941 * 942 * There are two hooks, one is specifically for each term, named 'get_term', and 943 * the second is for the taxonomy name, 'term_$taxonomy'. Both hooks gets the 944 * term object, and the taxonomy name as parameters. Both hooks are expected to 945 * return a term object. 946 * 947 * {@see 'get_term'} hook - Takes two parameters the term Object and the taxonomy name. 948 * Must return term object. Used in get_term() as a catch-all filter for every 949 * $term. 950 * 951 * {@see 'get_$taxonomy'} hook - Takes two parameters the term Object and the taxonomy 952 * name. Must return term object. $taxonomy will be the taxonomy name, so for 953 * example, if 'category', it would be 'get_category' as the filter name. Useful 954 * for custom taxonomies or plugging into default taxonomies. 955 * 956 * @todo Better formatting for DocBlock 957 * 958 * @since 2.3.0 959 * @since 4.4.0 Converted to return a WP_Term object if `$output` is `OBJECT`. 960 * The `$taxonomy` parameter was made optional. 961 * 962 * @see sanitize_term_field() The $context param lists the available values for get_term_by() $filter param. 963 * 964 * @param int|WP_Term|object $term If integer, term data will be fetched from the database, 965 * or from the cache if available. 966 * If stdClass object (as in the results of a database query), 967 * will apply filters and return a `WP_Term` object with the `$term` data. 968 * If `WP_Term`, will return `$term`. 969 * @param string $taxonomy Optional. Taxonomy name that `$term` is part of. 970 * @param string $output Optional. The required return type. One of OBJECT, ARRAY_A, or ARRAY_N, which 971 * correspond to a WP_Term object, an associative array, or a numeric array, 972 * respectively. Default OBJECT. 973 * @param string $filter Optional. How to sanitize term fields. Default 'raw'. 974 * @return WP_Term|array|WP_Error|null WP_Term instance (or array) on success, depending on the `$output` value. 975 * WP_Error if `$taxonomy` does not exist. Null for miscellaneous failure. 976 */ 977 function get_term( $term, $taxonomy = '', $output = OBJECT, $filter = 'raw' ) { 978 if ( empty( $term ) ) { 979 return new WP_Error( 'invalid_term', __( 'Empty Term.' ) ); 980 } 981 982 if ( $taxonomy && ! taxonomy_exists( $taxonomy ) ) { 983 return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy.' ) ); 984 } 985 986 if ( $term instanceof WP_Term ) { 987 $_term = $term; 988 } elseif ( is_object( $term ) ) { 989 if ( empty( $term->filter ) || 'raw' === $term->filter ) { 990 $_term = sanitize_term( $term, $taxonomy, 'raw' ); 991 $_term = new WP_Term( $_term ); 992 } else { 993 $_term = WP_Term::get_instance( $term->term_id ); 994 } 995 } else { 996 $_term = WP_Term::get_instance( $term, $taxonomy ); 997 } 998 999 if ( is_wp_error( $_term ) ) { 1000 return $_term; 1001 } elseif ( ! $_term ) { 1002 return null; 1003 } 1004 1005 // Ensure for filters that this is not empty. 1006 $taxonomy = $_term->taxonomy; 1007 1008 $old_term = $_term; 1009 /** 1010 * Filters a taxonomy term object. 1011 * 1012 * The {@see 'get_$taxonomy'} hook is also available for targeting a specific 1013 * taxonomy. 1014 * 1015 * @since 2.3.0 1016 * @since 4.4.0 `$_term` is now a `WP_Term` object. 1017 * 1018 * @param WP_Term $_term Term object. 1019 * @param string $taxonomy The taxonomy slug. 1020 */ 1021 $_term = apply_filters( 'get_term', $_term, $taxonomy ); 1022 1023 /** 1024 * Filters a taxonomy term object. 1025 * 1026 * The dynamic portion of the hook name, `$taxonomy`, refers 1027 * to the slug of the term's taxonomy. 1028 * 1029 * Possible hook names include: 1030 * 1031 * - `get_category` 1032 * - `get_post_tag` 1033 * 1034 * @since 2.3.0 1035 * @since 4.4.0 `$_term` is now a `WP_Term` object. 1036 * 1037 * @param WP_Term $_term Term object. 1038 * @param string $taxonomy The taxonomy slug. 1039 */ 1040 $_term = apply_filters( "get_{$taxonomy}", $_term, $taxonomy ); 1041 1042 // Bail if a filter callback has changed the type of the `$_term` object. 1043 if ( ! ( $_term instanceof WP_Term ) ) { 1044 return $_term; 1045 } 1046 1047 // Sanitize term, according to the specified filter. 1048 if ( $_term !== $old_term || $_term->filter !== $filter ) { 1049 $_term->filter( $filter ); 1050 } 1051 1052 if ( ARRAY_A === $output ) { 1053 return $_term->to_array(); 1054 } elseif ( ARRAY_N === $output ) { 1055 return array_values( $_term->to_array() ); 1056 } 1057 1058 return $_term; 1059 } 1060 1061 /** 1062 * Gets all term data from database by term field and data. 1063 * 1064 * Warning: $value is not escaped for 'name' $field. You must do it yourself, if 1065 * required. 1066 * 1067 * The default $field is 'id', therefore it is possible to also use null for 1068 * field, but not recommended that you do so. 1069 * 1070 * If $value does not exist, the return value will be false. If $taxonomy exists 1071 * and $field and $value combinations exist, the term will be returned. 1072 * 1073 * This function will always return the first term that matches the `$field`- 1074 * `$value`-`$taxonomy` combination specified in the parameters. If your query 1075 * is likely to match more than one term (as is likely to be the case when 1076 * `$field` is 'name', for example), consider using get_terms() instead; that 1077 * way, you will get all matching terms, and can provide your own logic for 1078 * deciding which one was intended. 1079 * 1080 * @todo Better formatting for DocBlock. 1081 * 1082 * @since 2.3.0 1083 * @since 4.4.0 `$taxonomy` is optional if `$field` is 'term_taxonomy_id'. Converted to return 1084 * a WP_Term object if `$output` is `OBJECT`. 1085 * @since 5.5.0 Added 'ID' as an alias of 'id' for the `$field` parameter. 1086 * 1087 * @see sanitize_term_field() The $context param lists the available values for get_term_by() $filter param. 1088 * 1089 * @param string $field Either 'slug', 'name', 'term_id' (or 'id', 'ID'), or 'term_taxonomy_id'. 1090 * @param string|int $value Search for this term value. 1091 * @param string $taxonomy Taxonomy name. Optional, if `$field` is 'term_taxonomy_id'. 1092 * @param string $output Optional. The required return type. One of OBJECT, ARRAY_A, or ARRAY_N, which 1093 * correspond to a WP_Term object, an associative array, or a numeric array, 1094 * respectively. Default OBJECT. 1095 * @param string $filter Optional. How to sanitize term fields. Default 'raw'. 1096 * @return WP_Term|array|false WP_Term instance (or array) on success, depending on the `$output` value. 1097 * False if `$taxonomy` does not exist or `$term` was not found. 1098 */ 1099 function get_term_by( $field, $value, $taxonomy = '', $output = OBJECT, $filter = 'raw' ) { 1100 1101 // 'term_taxonomy_id' lookups don't require taxonomy checks. 1102 if ( 'term_taxonomy_id' !== $field && ! taxonomy_exists( $taxonomy ) ) { 1103 return false; 1104 } 1105 1106 // No need to perform a query for empty 'slug' or 'name'. 1107 if ( 'slug' === $field || 'name' === $field ) { 1108 $value = (string) $value; 1109 1110 if ( 0 === strlen( $value ) ) { 1111 return false; 1112 } 1113 } 1114 1115 if ( 'id' === $field || 'ID' === $field || 'term_id' === $field ) { 1116 $term = get_term( (int) $value, $taxonomy, $output, $filter ); 1117 if ( is_wp_error( $term ) || null === $term ) { 1118 $term = false; 1119 } 1120 return $term; 1121 } 1122 1123 $args = array( 1124 'get' => 'all', 1125 'number' => 1, 1126 'taxonomy' => $taxonomy, 1127 'update_term_meta_cache' => false, 1128 'orderby' => 'none', 1129 'suppress_filter' => true, 1130 ); 1131 1132 switch ( $field ) { 1133 case 'slug': 1134 $args['slug'] = $value; 1135 break; 1136 case 'name': 1137 $args['name'] = $value; 1138 break; 1139 case 'term_taxonomy_id': 1140 $args['term_taxonomy_id'] = $value; 1141 unset( $args['taxonomy'] ); 1142 break; 1143 default: 1144 return false; 1145 } 1146 1147 $terms = get_terms( $args ); 1148 if ( is_wp_error( $terms ) || empty( $terms ) ) { 1149 return false; 1150 } 1151 1152 $term = array_shift( $terms ); 1153 1154 // In the case of 'term_taxonomy_id', override the provided `$taxonomy` with whatever we find in the DB. 1155 if ( 'term_taxonomy_id' === $field ) { 1156 $taxonomy = $term->taxonomy; 1157 } 1158 1159 return get_term( $term, $taxonomy, $output, $filter ); 1160 } 1161 1162 /** 1163 * Merges all term children into a single array of their IDs. 1164 * 1165 * This recursive function will merge all of the children of $term into the same 1166 * array of term IDs. Only useful for taxonomies which are hierarchical. 1167 * 1168 * Will return an empty array if $term does not exist in $taxonomy. 1169 * 1170 * @since 2.3.0 1171 * 1172 * @param int $term_id ID of term to get children. 1173 * @param string $taxonomy Taxonomy name. 1174 * @return array|WP_Error List of term IDs. WP_Error returned if `$taxonomy` does not exist. 1175 */ 1176 function get_term_children( $term_id, $taxonomy ) { 1177 if ( ! taxonomy_exists( $taxonomy ) ) { 1178 return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy.' ) ); 1179 } 1180 1181 $term_id = (int) $term_id; 1182 1183 $terms = _get_term_hierarchy( $taxonomy ); 1184 1185 if ( ! isset( $terms[ $term_id ] ) ) { 1186 return array(); 1187 } 1188 1189 $children = $terms[ $term_id ]; 1190 1191 foreach ( (array) $terms[ $term_id ] as $child ) { 1192 if ( $term_id === $child ) { 1193 continue; 1194 } 1195 1196 if ( isset( $terms[ $child ] ) ) { 1197 $children = array_merge( $children, get_term_children( $child, $taxonomy ) ); 1198 } 1199 } 1200 1201 return $children; 1202 } 1203 1204 /** 1205 * Gets sanitized term field. 1206 * 1207 * The function is for contextual reasons and for simplicity of usage. 1208 * 1209 * @since 2.3.0 1210 * @since 4.4.0 The `$taxonomy` parameter was made optional. `$term` can also now accept a WP_Term object. 1211 * 1212 * @see sanitize_term_field() 1213 * 1214 * @param string $field Term field to fetch. 1215 * @param int|WP_Term $term Term ID or object. 1216 * @param string $taxonomy Optional. Taxonomy name. Default empty. 1217 * @param string $context Optional. How to sanitize term fields. Look at sanitize_term_field() for available options. 1218 * Default 'display'. 1219 * @return string|int|null|WP_Error Will return an empty string if $term is not an object or if $field is not set in $term. 1220 */ 1221 function get_term_field( $field, $term, $taxonomy = '', $context = 'display' ) { 1222 $term = get_term( $term, $taxonomy ); 1223 if ( is_wp_error( $term ) ) { 1224 return $term; 1225 } 1226 1227 if ( ! is_object( $term ) ) { 1228 return ''; 1229 } 1230 1231 if ( ! isset( $term->$field ) ) { 1232 return ''; 1233 } 1234 1235 return sanitize_term_field( $field, $term->$field, $term->term_id, $term->taxonomy, $context ); 1236 } 1237 1238 /** 1239 * Sanitizes term for editing. 1240 * 1241 * Return value is sanitize_term() and usage is for sanitizing the term for 1242 * editing. Function is for contextual and simplicity. 1243 * 1244 * @since 2.3.0 1245 * 1246 * @param int|object $id Term ID or object. 1247 * @param string $taxonomy Taxonomy name. 1248 * @return string|int|null|WP_Error Will return empty string if $term is not an object. 1249 */ 1250 function get_term_to_edit( $id, $taxonomy ) { 1251 $term = get_term( $id, $taxonomy ); 1252 1253 if ( is_wp_error( $term ) ) { 1254 return $term; 1255 } 1256 1257 if ( ! is_object( $term ) ) { 1258 return ''; 1259 } 1260 1261 return sanitize_term( $term, $taxonomy, 'edit' ); 1262 } 1263 1264 /** 1265 * Retrieves the terms in a given taxonomy or list of taxonomies. 1266 * 1267 * You can fully inject any customizations to the query before it is sent, as 1268 * well as control the output with a filter. 1269 * 1270 * The return type varies depending on the value passed to `$args['fields']`. See 1271 * WP_Term_Query::get_terms() for details. In all cases, a `WP_Error` object will 1272 * be returned if an invalid taxonomy is requested. 1273 * 1274 * The {@see 'get_terms'} filter will be called when the cache has the term and will 1275 * pass the found term along with the array of $taxonomies and array of $args. 1276 * This filter is also called before the array of terms is passed and will pass 1277 * the array of terms, along with the $taxonomies and $args. 1278 * 1279 * The {@see 'list_terms_exclusions'} filter passes the compiled exclusions along with 1280 * the $args. 1281 * 1282 * The {@see 'get_terms_orderby'} filter passes the `ORDER BY` clause for the query 1283 * along with the $args array. 1284 * 1285 * Taxonomy or an array of taxonomies should be passed via the 'taxonomy' argument 1286 * in the `$args` array: 1287 * 1288 * $terms = get_terms( array( 1289 * 'taxonomy' => 'post_tag', 1290 * 'hide_empty' => false, 1291 * ) ); 1292 * 1293 * Prior to 4.5.0, taxonomy was passed as the first parameter of `get_terms()`. 1294 * 1295 * {@internal The `$deprecated` parameter is parsed for backward compatibility only.} 1296 * 1297 * @since 2.3.0 1298 * @since 4.2.0 Introduced 'name' and 'childless' parameters. 1299 * @since 4.4.0 Introduced the ability to pass 'term_id' as an alias of 'id' for the `orderby` parameter. 1300 * Introduced the 'meta_query' and 'update_term_meta_cache' parameters. Converted to return 1301 * a list of WP_Term objects. 1302 * @since 4.5.0 Changed the function signature so that the `$args` array can be provided as the first parameter. 1303 * Introduced 'meta_key' and 'meta_value' parameters. Introduced the ability to order results by metadata. 1304 * @since 4.8.0 Introduced 'suppress_filter' parameter. 1305 * 1306 * @param array|string $args Optional. Array or string of arguments. See WP_Term_Query::__construct() 1307 * for information on accepted arguments. Default empty array. 1308 * @param array|string $deprecated Optional. Argument array, when using the legacy function parameter format. 1309 * If present, this parameter will be interpreted as `$args`, and the first 1310 * function parameter will be parsed as a taxonomy or array of taxonomies. 1311 * Default empty. 1312 * @return WP_Term[]|int[]|string[]|string|WP_Error Array of terms, a count thereof as a numeric string, 1313 * or WP_Error if any of the taxonomies do not exist. 1314 * See the function description for more information. 1315 */ 1316 function get_terms( $args = array(), $deprecated = '' ) { 1317 $term_query = new WP_Term_Query(); 1318 1319 $defaults = array( 1320 'suppress_filter' => false, 1321 ); 1322 1323 /* 1324 * Legacy argument format ($taxonomy, $args) takes precedence. 1325 * 1326 * We detect legacy argument format by checking if 1327 * (a) a second non-empty parameter is passed, or 1328 * (b) the first parameter shares no keys with the default array (ie, it's a list of taxonomies) 1329 */ 1330 $_args = wp_parse_args( $args ); 1331 $key_intersect = array_intersect_key( $term_query->query_var_defaults, (array) $_args ); 1332 $do_legacy_args = $deprecated || empty( $key_intersect ); 1333 1334 if ( $do_legacy_args ) { 1335 $taxonomies = (array) $args; 1336 $args = wp_parse_args( $deprecated, $defaults ); 1337 $args['taxonomy'] = $taxonomies; 1338 } else { 1339 $args = wp_parse_args( $args, $defaults ); 1340 if ( isset( $args['taxonomy'] ) && null !== $args['taxonomy'] ) { 1341 $args['taxonomy'] = (array) $args['taxonomy']; 1342 } 1343 } 1344 1345 if ( ! empty( $args['taxonomy'] ) ) { 1346 foreach ( $args['taxonomy'] as $taxonomy ) { 1347 if ( ! taxonomy_exists( $taxonomy ) ) { 1348 return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy.' ) ); 1349 } 1350 } 1351 } 1352 1353 // Don't pass suppress_filter to WP_Term_Query. 1354 $suppress_filter = $args['suppress_filter']; 1355 unset( $args['suppress_filter'] ); 1356 1357 $terms = $term_query->query( $args ); 1358 1359 // Count queries are not filtered, for legacy reasons. 1360 if ( ! is_array( $terms ) ) { 1361 return $terms; 1362 } 1363 1364 if ( $suppress_filter ) { 1365 return $terms; 1366 } 1367 1368 /** 1369 * Filters the found terms. 1370 * 1371 * @since 2.3.0 1372 * @since 4.6.0 Added the `$term_query` parameter. 1373 * 1374 * @param array $terms Array of found terms. 1375 * @param array|null $taxonomies An array of taxonomies if known. 1376 * @param array $args An array of get_terms() arguments. 1377 * @param WP_Term_Query $term_query The WP_Term_Query object. 1378 */ 1379 return apply_filters( 'get_terms', $terms, $term_query->query_vars['taxonomy'], $term_query->query_vars, $term_query ); 1380 } 1381 1382 /** 1383 * Adds metadata to a term. 1384 * 1385 * For historical reasons both the meta key and the meta value are expected to be "slashed" (slashes escaped) on input. 1386 * 1387 * @since 4.4.0 1388 * 1389 * @param int $term_id Term ID. 1390 * @param string $meta_key Metadata name. 1391 * @param mixed $meta_value Metadata value. Arrays and objects are stored as serialized data and 1392 * will be returned as the same type when retrieved. Other data types will 1393 * be stored as strings in the database: 1394 * - false is stored and retrieved as an empty string ('') 1395 * - true is stored and retrieved as '1' 1396 * - numbers (both integer and float) are stored and retrieved as strings 1397 * Must be serializable if non-scalar. 1398 * @param bool $unique Optional. Whether the same key should not be added. 1399 * Default false. 1400 * @return int|false|WP_Error Meta ID on success, false on failure. 1401 * WP_Error when term_id is ambiguous between taxonomies. 1402 */ 1403 function add_term_meta( $term_id, $meta_key, $meta_value, $unique = false ) { 1404 if ( wp_term_is_shared( $term_id ) ) { 1405 return new WP_Error( 'ambiguous_term_id', __( 'Term meta cannot be added to terms that are shared between taxonomies.' ), $term_id ); 1406 } 1407 1408 return add_metadata( 'term', $term_id, $meta_key, $meta_value, $unique ); 1409 } 1410 1411 /** 1412 * Removes metadata matching criteria from a term. 1413 * 1414 * For historical reasons both the meta key and the meta value are expected to be "slashed" (slashes escaped) on input. 1415 * 1416 * @since 4.4.0 1417 * 1418 * @param int $term_id Term ID. 1419 * @param string $meta_key Metadata name. 1420 * @param mixed $meta_value Optional. Metadata value. If provided, 1421 * rows will only be removed that match the value. 1422 * Must be serializable if non-scalar. Default empty. 1423 * @return bool True on success, false on failure. 1424 */ 1425 function delete_term_meta( $term_id, $meta_key, $meta_value = '' ) { 1426 return delete_metadata( 'term', $term_id, $meta_key, $meta_value ); 1427 } 1428 1429 /** 1430 * Retrieves metadata for a term. 1431 * 1432 * @since 4.4.0 1433 * 1434 * @param int $term_id Term ID. 1435 * @param string $key Optional. The meta key to retrieve. By default, 1436 * returns data for all keys. Default empty. 1437 * @param bool $single Optional. Whether to return a single value. 1438 * This parameter has no effect if `$key` is not specified. 1439 * Default false. 1440 * @return mixed An array of values if `$single` is false. 1441 * The value of the meta field if `$single` is true. 1442 * False for an invalid `$term_id` (non-numeric, zero, or negative value). 1443 * An empty array if a valid but non-existing term ID is passed and `$single` is false. 1444 * An empty string if a valid but non-existing term ID is passed and `$single` is true. 1445 * Note: Non-serialized values are returned as strings: 1446 * - false values are returned as empty strings ('') 1447 * - true values are returned as '1' 1448 * - numbers are returned as strings 1449 * Arrays and objects retain their original type. 1450 */ 1451 function get_term_meta( $term_id, $key = '', $single = false ) { 1452 return get_metadata( 'term', $term_id, $key, $single ); 1453 } 1454 1455 /** 1456 * Updates term metadata. 1457 * 1458 * Use the `$prev_value` parameter to differentiate between meta fields with the same key and term ID. 1459 * 1460 * If the meta field for the term does not exist, it will be added. 1461 * 1462 * For historical reasons both the meta key and the meta value are expected to be "slashed" (slashes escaped) on input. 1463 * 1464 * @since 4.4.0 1465 * 1466 * @param int $term_id Term ID. 1467 * @param string $meta_key Metadata key. 1468 * @param mixed $meta_value Metadata value. Must be serializable if non-scalar. 1469 * @param mixed $prev_value Optional. Previous value to check before updating. 1470 * If specified, only update existing metadata entries with 1471 * this value. Otherwise, update all entries. Default empty. 1472 * @return int|bool|WP_Error Meta ID if the key didn't exist. true on successful update, 1473 * false on failure or if the value passed to the function 1474 * is the same as the one that is already in the database. 1475 * WP_Error when term_id is ambiguous between taxonomies. 1476 */ 1477 function update_term_meta( $term_id, $meta_key, $meta_value, $prev_value = '' ) { 1478 if ( wp_term_is_shared( $term_id ) ) { 1479 return new WP_Error( 'ambiguous_term_id', __( 'Term meta cannot be added to terms that are shared between taxonomies.' ), $term_id ); 1480 } 1481 1482 return update_metadata( 'term', $term_id, $meta_key, $meta_value, $prev_value ); 1483 } 1484 1485 /** 1486 * Updates metadata cache for list of term IDs. 1487 * 1488 * Performs SQL query to retrieve all metadata for the terms matching `$term_ids` and stores them in the cache. 1489 * Subsequent calls to `get_term_meta()` will not need to query the database. 1490 * 1491 * @since 4.4.0 1492 * 1493 * @param array $term_ids List of term IDs. 1494 * @return array|false An array of metadata on success, false if there is nothing to update. 1495 */ 1496 function update_termmeta_cache( $term_ids ) { 1497 return update_meta_cache( 'term', $term_ids ); 1498 } 1499 1500 1501 /** 1502 * Queue term meta for lazy-loading. 1503 * 1504 * @since 6.3.0 1505 * 1506 * @param array $term_ids List of term IDs. 1507 */ 1508 function wp_lazyload_term_meta( array $term_ids ) { 1509 if ( empty( $term_ids ) ) { 1510 return; 1511 } 1512 $lazyloader = wp_metadata_lazyloader(); 1513 $lazyloader->queue_objects( 'term', $term_ids ); 1514 } 1515 1516 /** 1517 * Gets all meta data, including meta IDs, for the given term ID. 1518 * 1519 * @since 4.9.0 1520 * 1521 * @global wpdb $wpdb WordPress database abstraction object. 1522 * 1523 * @param int $term_id Term ID. 1524 * @return array|false Array with meta data, or false when the meta table is not installed. 1525 */ 1526 function has_term_meta( $term_id ) { 1527 $check = wp_check_term_meta_support_prefilter( null ); 1528 if ( null !== $check ) { 1529 return $check; 1530 } 1531 1532 global $wpdb; 1533 1534 return $wpdb->get_results( $wpdb->prepare( "SELECT meta_key, meta_value, meta_id, term_id FROM $wpdb->termmeta WHERE term_id = %d ORDER BY meta_key,meta_id", $term_id ), ARRAY_A ); 1535 } 1536 1537 /** 1538 * Registers a meta key for terms. 1539 * 1540 * @since 4.9.8 1541 * 1542 * @param string $taxonomy Taxonomy to register a meta key for. Pass an empty string 1543 * to register the meta key across all existing taxonomies. 1544 * @param string $meta_key The meta key to register. 1545 * @param array $args Data used to describe the meta key when registered. See 1546 * {@see register_meta()} for a list of supported arguments. 1547 * @return bool True if the meta key was successfully registered, false if not. 1548 */ 1549 function register_term_meta( $taxonomy, $meta_key, array $args ) { 1550 $args['object_subtype'] = $taxonomy; 1551 1552 return register_meta( 'term', $meta_key, $args ); 1553 } 1554 1555 /** 1556 * Unregisters a meta key for terms. 1557 * 1558 * @since 4.9.8 1559 * 1560 * @param string $taxonomy Taxonomy the meta key is currently registered for. Pass 1561 * an empty string if the meta key is registered across all 1562 * existing taxonomies. 1563 * @param string $meta_key The meta key to unregister. 1564 * @return bool True on success, false if the meta key was not previously registered. 1565 */ 1566 function unregister_term_meta( $taxonomy, $meta_key ) { 1567 return unregister_meta_key( 'term', $meta_key, $taxonomy ); 1568 } 1569 1570 /** 1571 * Determines whether a taxonomy term exists. 1572 * 1573 * Formerly is_term(), introduced in 2.3.0. 1574 * 1575 * For more information on this and similar theme functions, check out 1576 * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/ 1577 * Conditional Tags} article in the Theme Developer Handbook. 1578 * 1579 * @since 3.0.0 1580 * @since 6.0.0 Converted to use `get_terms()`. 1581 * 1582 * @global bool $_wp_suspend_cache_invalidation 1583 * 1584 * @param int|string $term The term to check. Accepts term ID, slug, or name. 1585 * @param string $taxonomy Optional. The taxonomy name to use. 1586 * @param int $parent_term Optional. ID of parent term under which to confine the exists search. 1587 * @return mixed Returns null if the term does not exist. 1588 * Returns the term ID if no taxonomy is specified and the term ID exists. 1589 * Returns an array of the term ID and the term taxonomy ID if the taxonomy is specified and the pairing exists. 1590 * Returns 0 if term ID 0 is passed to the function. 1591 */ 1592 function term_exists( $term, $taxonomy = '', $parent_term = null ) { 1593 global $_wp_suspend_cache_invalidation; 1594 1595 if ( null === $term ) { 1596 return null; 1597 } 1598 1599 $defaults = array( 1600 'get' => 'all', 1601 'fields' => 'ids', 1602 'number' => 1, 1603 'update_term_meta_cache' => false, 1604 'order' => 'ASC', 1605 'orderby' => 'term_id', 1606 'suppress_filter' => true, 1607 ); 1608 1609 // Ensure that while importing, queries are not cached. 1610 if ( ! empty( $_wp_suspend_cache_invalidation ) ) { 1611 $defaults['cache_results'] = false; 1612 } 1613 1614 if ( ! empty( $taxonomy ) ) { 1615 $defaults['taxonomy'] = $taxonomy; 1616 $defaults['fields'] = 'all'; 1617 } 1618 1619 /** 1620 * Filters default query arguments for checking if a term exists. 1621 * 1622 * @since 6.0.0 1623 * 1624 * @param array $defaults An array of arguments passed to get_terms(). 1625 * @param int|string $term The term to check. Accepts term ID, slug, or name. 1626 * @param string $taxonomy The taxonomy name to use. An empty string indicates 1627 * the search is against all taxonomies. 1628 * @param int|null $parent_term ID of parent term under which to confine the exists search. 1629 * Null indicates the search is unconfined. 1630 */ 1631 $defaults = apply_filters( 'term_exists_default_query_args', $defaults, $term, $taxonomy, $parent_term ); 1632 1633 if ( is_int( $term ) ) { 1634 if ( 0 === $term ) { 1635 return 0; 1636 } 1637 $args = wp_parse_args( array( 'include' => array( $term ) ), $defaults ); 1638 $terms = get_terms( $args ); 1639 } else { 1640 $term = trim( wp_unslash( $term ) ); 1641 if ( '' === $term ) { 1642 return null; 1643 } 1644 1645 if ( ! empty( $taxonomy ) && is_numeric( $parent_term ) ) { 1646 $defaults['parent'] = (int) $parent_term; 1647 } 1648 1649 $args = wp_parse_args( array( 'slug' => sanitize_title( $term ) ), $defaults ); 1650 $terms = get_terms( $args ); 1651 if ( empty( $terms ) || is_wp_error( $terms ) ) { 1652 $args = wp_parse_args( array( 'name' => $term ), $defaults ); 1653 $terms = get_terms( $args ); 1654 } 1655 } 1656 1657 if ( empty( $terms ) || is_wp_error( $terms ) ) { 1658 return null; 1659 } 1660 1661 $_term = array_shift( $terms ); 1662 1663 if ( ! empty( $taxonomy ) ) { 1664 return array( 1665 'term_id' => (string) $_term->term_id, 1666 'term_taxonomy_id' => (string) $_term->term_taxonomy_id, 1667 ); 1668 } 1669 1670 return (string) $_term; 1671 } 1672 1673 /** 1674 * Checks if a term is an ancestor of another term. 1675 * 1676 * You can use either an ID or the term object for both parameters. 1677 * 1678 * @since 3.4.0 1679 * 1680 * @param int|object $term1 ID or object to check if this is the parent term. 1681 * @param int|object $term2 The child term. 1682 * @param string $taxonomy Taxonomy name that $term1 and `$term2` belong to. 1683 * @return bool Whether `$term2` is a child of `$term1`. 1684 */ 1685 function term_is_ancestor_of( $term1, $term2, $taxonomy ) { 1686 if ( ! isset( $term1->term_id ) ) { 1687 $term1 = get_term( $term1, $taxonomy ); 1688 } 1689 if ( ! isset( $term2->parent ) ) { 1690 $term2 = get_term( $term2, $taxonomy ); 1691 } 1692 1693 if ( empty( $term1->term_id ) || empty( $term2->parent ) ) { 1694 return false; 1695 } 1696 if ( $term2->parent === $term1->term_id ) { 1697 return true; 1698 } 1699 1700 return term_is_ancestor_of( $term1, get_term( $term2->parent, $taxonomy ), $taxonomy ); 1701 } 1702 1703 /** 1704 * Sanitizes all term fields. 1705 * 1706 * Relies on sanitize_term_field() to sanitize the term. The difference is that 1707 * this function will sanitize **all** fields. The context is based 1708 * on sanitize_term_field(). 1709 * 1710 * The `$term` is expected to be either an array or an object. 1711 * 1712 * @since 2.3.0 1713 * 1714 * @param array|object $term The term to check. 1715 * @param string $taxonomy The taxonomy name to use. 1716 * @param string $context Optional. Context in which to sanitize the term. 1717 * Accepts 'raw', 'edit', 'db', 'display', 'rss', 1718 * 'attribute', or 'js'. Default 'display'. 1719 * @return array|object Term with all fields sanitized. 1720 */ 1721 function sanitize_term( $term, $taxonomy, $context = 'display' ) { 1722 $fields = array( 'term_id', 'name', 'description', 'slug', 'count', 'parent', 'term_group', 'term_taxonomy_id', 'object_id' ); 1723 1724 $do_object = is_object( $term ); 1725 1726 $term_id = $do_object ? $term->term_id : ( isset( $term['term_id'] ) ? $term['term_id'] : 0 ); 1727 1728 foreach ( (array) $fields as $field ) { 1729 if ( $do_object ) { 1730 if ( isset( $term->$field ) ) { 1731 $term->$field = sanitize_term_field( $field, $term->$field, $term_id, $taxonomy, $context ); 1732 } 1733 } else { 1734 if ( isset( $term[ $field ] ) ) { 1735 $term[ $field ] = sanitize_term_field( $field, $term[ $field ], $term_id, $taxonomy, $context ); 1736 } 1737 } 1738 } 1739 1740 if ( $do_object ) { 1741 $term->filter = $context; 1742 } else { 1743 $term['filter'] = $context; 1744 } 1745 1746 return $term; 1747 } 1748 1749 /** 1750 * Sanitizes the field value in the term based on the context. 1751 * 1752 * Passing a term field value through the function should be assumed to have 1753 * cleansed the value for whatever context the term field is going to be used. 1754 * 1755 * If no context or an unsupported context is given, then default filters will 1756 * be applied. 1757 * 1758 * There are enough filters for each context to support a custom filtering 1759 * without creating your own filter function. Simply create a function that 1760 * hooks into the filter you need. 1761 * 1762 * @since 2.3.0 1763 * 1764 * @param string $field Term field to sanitize. 1765 * @param string $value Search for this term value. 1766 * @param int $term_id Term ID. 1767 * @param string $taxonomy Taxonomy name. 1768 * @param string $context Context in which to sanitize the term field. 1769 * Accepts 'raw', 'edit', 'db', 'display', 'rss', 1770 * 'attribute', or 'js'. Default 'display'. 1771 * @return mixed Sanitized field. 1772 */ 1773 function sanitize_term_field( $field, $value, $term_id, $taxonomy, $context ) { 1774 $int_fields = array( 'parent', 'term_id', 'count', 'term_group', 'term_taxonomy_id', 'object_id' ); 1775 if ( in_array( $field, $int_fields, true ) ) { 1776 $value = (int) $value; 1777 if ( $value < 0 ) { 1778 $value = 0; 1779 } 1780 } 1781 1782 $context = strtolower( $context ); 1783 1784 if ( 'raw' === $context ) { 1785 return $value; 1786 } 1787 1788 if ( 'edit' === $context ) { 1789 1790 /** 1791 * Filters a term field to edit before it is sanitized. 1792 * 1793 * The dynamic portion of the hook name, `$field`, refers to the term field. 1794 * 1795 * @since 2.3.0 1796 * 1797 * @param mixed $value Value of the term field. 1798 * @param int $term_id Term ID. 1799 * @param string $taxonomy Taxonomy slug. 1800 */ 1801 $value = apply_filters( "edit_term_{$field}", $value, $term_id, $taxonomy ); 1802 1803 /** 1804 * Filters the taxonomy field to edit before it is sanitized. 1805 * 1806 * The dynamic portions of the filter name, `$taxonomy` and `$field`, refer 1807 * to the taxonomy slug and taxonomy field, respectively. 1808 * 1809 * @since 2.3.0 1810 * 1811 * @param mixed $value Value of the taxonomy field to edit. 1812 * @param int $term_id Term ID. 1813 */ 1814 $value = apply_filters( "edit_{$taxonomy}_{$field}", $value, $term_id ); 1815 1816 if ( 'description' === $field ) { 1817 $value = esc_html( $value ); // textarea_escaped 1818 } else { 1819 $value = esc_attr( $value ); 1820 } 1821 } elseif ( 'db' === $context ) { 1822 1823 /** 1824 * Filters a term field value before it is sanitized. 1825 * 1826 * The dynamic portion of the hook name, `$field`, refers to the term field. 1827 * 1828 * @since 2.3.0 1829 * 1830 * @param mixed $value Value of the term field. 1831 * @param string $taxonomy Taxonomy slug. 1832 */ 1833 $value = apply_filters( "pre_term_{$field}", $value, $taxonomy ); 1834 1835 /** 1836 * Filters a taxonomy field before it is sanitized. 1837 * 1838 * The dynamic portions of the filter name, `$taxonomy` and `$field`, refer 1839 * to the taxonomy slug and field name, respectively. 1840 * 1841 * @since 2.3.0 1842 * 1843 * @param mixed $value Value of the taxonomy field. 1844 */ 1845 $value = apply_filters( "pre_{$taxonomy}_{$field}", $value ); 1846 1847 // Back compat filters. 1848 if ( 'slug' === $field ) { 1849 /** 1850 * Filters the category nicename before it is sanitized. 1851 * 1852 * Use the {@see 'pre_$taxonomy_$field'} hook instead. 1853 * 1854 * @since 2.0.3 1855 * 1856 * @param string $value The category nicename. 1857 */ 1858 $value = apply_filters( 'pre_category_nicename', $value ); 1859 } 1860 } elseif ( 'rss' === $context ) { 1861 1862 /** 1863 * Filters the term field for use in RSS. 1864 * 1865 * The dynamic portion of the hook name, `$field`, refers to the term field. 1866 * 1867 * @since 2.3.0 1868 * 1869 * @param mixed $value Value of the term field. 1870 * @param string $taxonomy Taxonomy slug. 1871 */ 1872 $value = apply_filters( "term_{$field}_rss", $value, $taxonomy ); 1873 1874 /** 1875 * Filters the taxonomy field for use in RSS. 1876 * 1877 * The dynamic portions of the hook name, `$taxonomy`, and `$field`, refer 1878 * to the taxonomy slug and field name, respectively. 1879 * 1880 * @since 2.3.0 1881 * 1882 * @param mixed $value Value of the taxonomy field. 1883 */ 1884 $value = apply_filters( "{$taxonomy}_{$field}_rss", $value ); 1885 } else { 1886 // Use display filters by default. 1887 1888 /** 1889 * Filters the term field sanitized for display. 1890 * 1891 * The dynamic portion of the hook name, `$field`, refers to the term field name. 1892 * 1893 * @since 2.3.0 1894 * 1895 * @param mixed $value Value of the term field. 1896 * @param int $term_id Term ID. 1897 * @param string $taxonomy Taxonomy slug. 1898 * @param string $context Context to retrieve the term field value. 1899 */ 1900 $value = apply_filters( "term_{$field}", $value, $term_id, $taxonomy, $context ); 1901 1902 /** 1903 * Filters the taxonomy field sanitized for display. 1904 * 1905 * The dynamic portions of the filter name, `$taxonomy`, and `$field`, refer 1906 * to the taxonomy slug and taxonomy field, respectively. 1907 * 1908 * @since 2.3.0 1909 * 1910 * @param mixed $value Value of the taxonomy field. 1911 * @param int $term_id Term ID. 1912 * @param string $context Context to retrieve the taxonomy field value. 1913 */ 1914 $value = apply_filters( "{$taxonomy}_{$field}", $value, $term_id, $context ); 1915 } 1916 1917 if ( 'attribute' === $context ) { 1918 $value = esc_attr( $value ); 1919 } elseif ( 'js' === $context ) { 1920 $value = esc_js( $value ); 1921 } 1922 1923 // Restore the type for integer fields after esc_attr(). 1924 if ( in_array( $field, $int_fields, true ) ) { 1925 $value = (int) $value; 1926 } 1927 1928 return $value; 1929 } 1930 1931 /** 1932 * Counts how many terms are in taxonomy. 1933 * 1934 * Default $args is 'hide_empty' which can be 'hide_empty=true' or array('hide_empty' => true). 1935 * 1936 * {@internal The `$deprecated` parameter is parsed for backward compatibility only.} 1937 * 1938 * @since 2.3.0 1939 * @since 5.6.0 Changed the function signature so that the `$args` array can be provided as the first parameter. 1940 * 1941 * @param array|string $args Optional. Array or string of arguments. See WP_Term_Query::__construct() 1942 * for information on accepted arguments. Default empty array. 1943 * @param array|string $deprecated Optional. Argument array, when using the legacy function parameter format. 1944 * If present, this parameter will be interpreted as `$args`, and the first 1945 * function parameter will be parsed as a taxonomy or array of taxonomies. 1946 * Default empty. 1947 * @return string|WP_Error Numeric string containing the number of terms in that 1948 * taxonomy or WP_Error if the taxonomy does not exist. 1949 */ 1950 function wp_count_terms( $args = array(), $deprecated = '' ) { 1951 $use_legacy_args = false; 1952 1953 // Check whether function is used with legacy signature: `$taxonomy` and `$args`. 1954 if ( $args 1955 && ( is_string( $args ) && taxonomy_exists( $args ) 1956 || is_array( $args ) && wp_is_numeric_array( $args ) ) 1957 ) { 1958 $use_legacy_args = true; 1959 } 1960 1961 $defaults = array( 'hide_empty' => false ); 1962 1963 if ( $use_legacy_args ) { 1964 $defaults['taxonomy'] = $args; 1965 $args = $deprecated; 1966 } 1967 1968 $args = wp_parse_args( $args, $defaults ); 1969 1970 // Backward compatibility. 1971 if ( isset( $args['ignore_empty'] ) ) { 1972 $args['hide_empty'] = $args['ignore_empty']; 1973 unset( $args['ignore_empty'] ); 1974 } 1975 1976 $args['fields'] = 'count'; 1977 1978 return get_terms( $args ); 1979 } 1980 1981 /** 1982 * Unlinks the object from the taxonomy or taxonomies. 1983 * 1984 * Will remove all relationships between the object and any terms in 1985 * a particular taxonomy or taxonomies. Does not remove the term or 1986 * taxonomy itself. 1987 * 1988 * @since 2.3.0 1989 * 1990 * @param int $object_id The term object ID that refers to the term. 1991 * @param string|array $taxonomies List of taxonomy names or single taxonomy name. 1992 */ 1993 function wp_delete_object_term_relationships( $object_id, $taxonomies ) { 1994 $object_id = (int) $object_id; 1995 1996 if ( ! is_array( $taxonomies ) ) { 1997 $taxonomies = array( $taxonomies ); 1998 } 1999 2000 foreach ( (array) $taxonomies as $taxonomy ) { 2001 $term_ids = wp_get_object_terms( $object_id, $taxonomy, array( 'fields' => 'ids' ) ); 2002 $term_ids = array_map( 'intval', $term_ids ); 2003 wp_remove_object_terms( $object_id, $term_ids, $taxonomy ); 2004 } 2005 } 2006 2007 /** 2008 * Removes a term from the database. 2009 * 2010 * If the term is a parent of other terms, then the children will be updated to 2011 * that term's parent. 2012 * 2013 * Metadata associated with the term will be deleted. 2014 * 2015 * @since 2.3.0 2016 * 2017 * @global wpdb $wpdb WordPress database abstraction object. 2018 * 2019 * @param int $term Term ID. 2020 * @param string $taxonomy Taxonomy name. 2021 * @param array|string $args { 2022 * Optional. Array of arguments to override the default term ID. Default empty array. 2023 * 2024 * @type int $default The term ID to make the default term. This will only override 2025 * the terms found if there is only one term found. Any other and 2026 * the found terms are used. 2027 * @type bool $force_default Optional. Whether to force the supplied term as default to be 2028 * assigned even if the object was not going to be term-less. 2029 * Default false. 2030 * } 2031 * @return bool|int|WP_Error True on success, false if term does not exist. Zero on attempted 2032 * deletion of default Category. WP_Error if the taxonomy does not exist. 2033 */ 2034 function wp_delete_term( $term, $taxonomy, $args = array() ) { 2035 global $wpdb; 2036 2037 $term = (int) $term; 2038 2039 $ids = term_exists( $term, $taxonomy ); 2040 if ( ! $ids ) { 2041 return false; 2042 } 2043 if ( is_wp_error( $ids ) ) { 2044 return $ids; 2045 } 2046 2047 $tt_id = $ids['term_taxonomy_id']; 2048 2049 $defaults = array(); 2050 2051 if ( 'category' === $taxonomy ) { 2052 $defaults['default'] = (int) get_option( 'default_category' ); 2053 if ( $defaults['default'] === $term ) { 2054 return 0; // Don't delete the default category. 2055 } 2056 } 2057 2058 // Don't delete the default custom taxonomy term. 2059 $taxonomy_object = get_taxonomy( $taxonomy ); 2060 if ( ! empty( $taxonomy_object->default_term ) ) { 2061 $defaults['default'] = (int) get_option( 'default_term_' . $taxonomy ); 2062 if ( $defaults['default'] === $term ) { 2063 return 0; 2064 } 2065 } 2066 2067 $args = wp_parse_args( $args, $defaults ); 2068 2069 if ( isset( $args['default'] ) ) { 2070 $default = (int) $args['default']; 2071 if ( ! term_exists( $default, $taxonomy ) ) { 2072 unset( $default ); 2073 } 2074 } 2075 2076 if ( isset( $args['force_default'] ) ) { 2077 $force_default = $args['force_default']; 2078 } 2079 2080 /** 2081 * Fires when deleting a term, before any modifications are made to posts or terms. 2082 * 2083 * @since 4.1.0 2084 * 2085 * @param int $term Term ID. 2086 * @param string $taxonomy Taxonomy name. 2087 */ 2088 do_action( 'pre_delete_term', $term, $taxonomy ); 2089 2090 // Update children to point to new parent. 2091 if ( is_taxonomy_hierarchical( $taxonomy ) ) { 2092 $term_obj = get_term( $term, $taxonomy ); 2093 if ( is_wp_error( $term_obj ) ) { 2094 return $term_obj; 2095 } 2096 $parent = $term_obj->parent; 2097 2098 $edit_ids = $wpdb->get_results( "SELECT term_id, term_taxonomy_id FROM $wpdb->term_taxonomy WHERE `parent` = " . (int) $term_obj->term_id ); 2099 $edit_tt_ids = wp_list_pluck( $edit_ids, 'term_taxonomy_id' ); 2100 2101 /** 2102 * Fires immediately before a term to delete's children are reassigned a parent. 2103 * 2104 * @since 2.9.0 2105 * 2106 * @param array $edit_tt_ids An array of term taxonomy IDs for the given term. 2107 */ 2108 do_action( 'edit_term_taxonomies', $edit_tt_ids ); 2109 2110 $wpdb->update( $wpdb->term_taxonomy, compact( 'parent' ), array( 'parent' => $term_obj->term_id ) + compact( 'taxonomy' ) ); 2111 2112 // Clean the cache for all child terms. 2113 $edit_term_ids = wp_list_pluck( $edit_ids, 'term_id' ); 2114 clean_term_cache( $edit_term_ids, $taxonomy ); 2115 2116 /** 2117 * Fires immediately after a term to delete's children are reassigned a parent. 2118 * 2119 * @since 2.9.0 2120 * 2121 * @param array $edit_tt_ids An array of term taxonomy IDs for the given term. 2122 */ 2123 do_action( 'edited_term_taxonomies', $edit_tt_ids ); 2124 } 2125 2126 // Get the term before deleting it or its term relationships so we can pass to actions below. 2127 $deleted_term = get_term( $term, $taxonomy ); 2128 2129 $object_ids = (array) $wpdb->get_col( $wpdb->prepare( "SELECT object_id FROM $wpdb->term_relationships WHERE term_taxonomy_id = %d", $tt_id ) ); 2130 2131 foreach ( $object_ids as $object_id ) { 2132 if ( ! isset( $default ) ) { 2133 wp_remove_object_terms( $object_id, $term, $taxonomy ); 2134 continue; 2135 } 2136 2137 $terms = wp_get_object_terms( 2138 $object_id, 2139 $taxonomy, 2140 array( 2141 'fields' => 'ids', 2142 'orderby' => 'none', 2143 ) 2144 ); 2145 2146 if ( 1 === count( $terms ) ) { 2147 $terms = array( $default ); 2148 } else { 2149 $terms = array_diff( $terms, array( $term ) ); 2150 if ( isset( $force_default ) && $force_default ) { 2151 $terms = array_merge( $terms, array( $default ) ); 2152 } 2153 } 2154 2155 $terms = array_map( 'intval', $terms ); 2156 wp_set_object_terms( $object_id, $terms, $taxonomy ); 2157 } 2158 2159 // Clean the relationship caches for all object types using this term. 2160 $tax_object = get_taxonomy( $taxonomy ); 2161 foreach ( $tax_object->object_type as $object_type ) { 2162 clean_object_term_cache( $object_ids, $object_type ); 2163 } 2164 2165 $term_meta_ids = $wpdb->get_col( $wpdb->prepare( "SELECT meta_id FROM $wpdb->termmeta WHERE term_id = %d ", $term ) ); 2166 foreach ( $term_meta_ids as $mid ) { 2167 delete_metadata_by_mid( 'term', $mid ); 2168 } 2169 2170 /** 2171 * Fires immediately before a term taxonomy ID is deleted. 2172 * 2173 * @since 2.9.0 2174 * 2175 * @param int $tt_id Term taxonomy ID. 2176 */ 2177 do_action( 'delete_term_taxonomy', $tt_id ); 2178 2179 $wpdb->delete( $wpdb->term_taxonomy, array( 'term_taxonomy_id' => $tt_id ) ); 2180 2181 /** 2182 * Fires immediately after a term taxonomy ID is deleted. 2183 * 2184 * @since 2.9.0 2185 * 2186 * @param int $tt_id Term taxonomy ID. 2187 */ 2188 do_action( 'deleted_term_taxonomy', $tt_id ); 2189 2190 // Delete the term if no taxonomies use it. 2191 if ( ! $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->term_taxonomy WHERE term_id = %d", $term ) ) ) { 2192 $wpdb->delete( $wpdb->terms, array( 'term_id' => $term ) ); 2193 } 2194 2195 clean_term_cache( $term, $taxonomy ); 2196 2197 /** 2198 * Fires after a term is deleted from the database and the cache is cleaned. 2199 * 2200 * The {@see 'delete_$taxonomy'} hook is also available for targeting a specific 2201 * taxonomy. 2202 * 2203 * @since 2.5.0 2204 * @since 4.5.0 Introduced the `$object_ids` argument. 2205 * 2206 * @param int $term Term ID. 2207 * @param int $tt_id Term taxonomy ID. 2208 * @param string $taxonomy Taxonomy slug. 2209 * @param WP_Term $deleted_term Copy of the already-deleted term. 2210 * @param array $object_ids List of term object IDs. 2211 */ 2212 do_action( 'delete_term', $term, $tt_id, $taxonomy, $deleted_term, $object_ids ); 2213 2214 /** 2215 * Fires after a term in a specific taxonomy is deleted. 2216 * 2217 * The dynamic portion of the hook name, `$taxonomy`, refers to the specific 2218 * taxonomy the term belonged to. 2219 * 2220 * Possible hook names include: 2221 * 2222 * - `delete_category` 2223 * - `delete_post_tag` 2224 * 2225 * @since 2.3.0 2226 * @since 4.5.0 Introduced the `$object_ids` argument. 2227 * 2228 * @param int $term Term ID. 2229 * @param int $tt_id Term taxonomy ID. 2230 * @param WP_Term $deleted_term Copy of the already-deleted term. 2231 * @param array $object_ids List of term object IDs. 2232 */ 2233 do_action( "delete_{$taxonomy}", $term, $tt_id, $deleted_term, $object_ids ); 2234 2235 return true; 2236 } 2237 2238 /** 2239 * Deletes one existing category. 2240 * 2241 * @since 2.0.0 2242 * 2243 * @param int $cat_id Category term ID. 2244 * @return bool|int|WP_Error Returns true if completes delete action; false if term doesn't exist; 2245 * Zero on attempted deletion of default Category; WP_Error object is 2246 * also a possibility. 2247 */ 2248 function wp_delete_category( $cat_id ) { 2249 return wp_delete_term( $cat_id, 'category' ); 2250 } 2251 2252 /** 2253 * Retrieves the terms associated with the given object(s), in the supplied taxonomies. 2254 * 2255 * @since 2.3.0 2256 * @since 4.2.0 Added support for 'taxonomy', 'parent', and 'term_taxonomy_id' values of `$orderby`. 2257 * Introduced `$parent` argument. 2258 * @since 4.4.0 Introduced `$meta_query` and `$update_term_meta_cache` arguments. When `$fields` is 'all' or 2259 * 'all_with_object_id', an array of `WP_Term` objects will be returned. 2260 * @since 4.7.0 Refactored to use WP_Term_Query, and to support any WP_Term_Query arguments. 2261 * @since 6.3.0 Passing `update_term_meta_cache` argument value false by default resulting in get_terms() to not 2262 * prime the term meta cache. 2263 * 2264 * @param int|int[] $object_ids The ID(s) of the object(s) to retrieve. 2265 * @param string|string[] $taxonomies The taxonomy names to retrieve terms from. 2266 * @param array|string $args See WP_Term_Query::__construct() for supported arguments. 2267 * @return WP_Term[]|int[]|string[]|string|WP_Error Array of terms, a count thereof as a numeric string, 2268 * or WP_Error if any of the taxonomies do not exist. 2269 * See WP_Term_Query::get_terms() for more information. 2270 */ 2271 function wp_get_object_terms( $object_ids, $taxonomies, $args = array() ) { 2272 if ( empty( $object_ids ) || empty( $taxonomies ) ) { 2273 return array(); 2274 } 2275 2276 if ( ! is_array( $taxonomies ) ) { 2277 $taxonomies = array( $taxonomies ); 2278 } 2279 2280 foreach ( $taxonomies as $taxonomy ) { 2281 if ( ! taxonomy_exists( $taxonomy ) ) { 2282 return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy.' ) ); 2283 } 2284 } 2285 2286 if ( ! is_array( $object_ids ) ) { 2287 $object_ids = array( $object_ids ); 2288 } 2289 $object_ids = array_map( 'intval', $object_ids ); 2290 2291 $defaults = array( 2292 'update_term_meta_cache' => false, 2293 ); 2294 2295 $args = wp_parse_args( $args, $defaults ); 2296 2297 /** 2298 * Filters arguments for retrieving object terms. 2299 * 2300 * @since 4.9.0 2301 * 2302 * @param array $args An array of arguments for retrieving terms for the given object(s). 2303 * See {@see wp_get_object_terms()} for details. 2304 * @param int[] $object_ids Array of object IDs. 2305 * @param string[] $taxonomies Array of taxonomy names to retrieve terms from. 2306 */ 2307 $args = apply_filters( 'wp_get_object_terms_args', $args, $object_ids, $taxonomies ); 2308 2309 /* 2310 * When one or more queried taxonomies is registered with an 'args' array, 2311 * those params override the `$args` passed to this function. 2312 */ 2313 $terms = array(); 2314 if ( count( $taxonomies ) > 1 ) { 2315 foreach ( $taxonomies as $index => $taxonomy ) { 2316 $t = get_taxonomy( $taxonomy ); 2317 if ( isset( $t->args ) && is_array( $t->args ) && array_merge( $args, $t->args ) != $args ) { 2318 unset( $taxonomies[ $index ] ); 2319 $terms = array_merge( $terms, wp_get_object_terms( $object_ids, $taxonomy, array_merge( $args, $t->args ) ) ); 2320 } 2321 } 2322 } else { 2323 $t = get_taxonomy( $taxonomies[0] ); 2324 if ( isset( $t->args ) && is_array( $t->args ) ) { 2325 $args = array_merge( $args, $t->args ); 2326 } 2327 } 2328 2329 $args['taxonomy'] = $taxonomies; 2330 $args['object_ids'] = $object_ids; 2331 2332 // Taxonomies registered without an 'args' param are handled here. 2333 if ( ! empty( $taxonomies ) ) { 2334 $terms_from_remaining_taxonomies = get_terms( $args ); 2335 2336 // Array keys should be preserved for values of $fields that use term_id for keys. 2337 if ( ! empty( $args['fields'] ) && str_starts_with( $args['fields'], 'id=>' ) ) { 2338 $terms = $terms + $terms_from_remaining_taxonomies; 2339 } else { 2340 $terms = array_merge( $terms, $terms_from_remaining_taxonomies ); 2341 } 2342 } 2343 2344 /** 2345 * Filters the terms for a given object or objects. 2346 * 2347 * @since 4.2.0 2348 * 2349 * @param WP_Term[]|int[]|string[]|string $terms Array of terms or a count thereof as a numeric string. 2350 * @param int[] $object_ids Array of object IDs for which terms were retrieved. 2351 * @param string[] $taxonomies Array of taxonomy names from which terms were retrieved. 2352 * @param array $args Array of arguments for retrieving terms for the given 2353 * object(s). See wp_get_object_terms() for details. 2354 */ 2355 $terms = apply_filters( 'get_object_terms', $terms, $object_ids, $taxonomies, $args ); 2356 2357 $object_ids = implode( ',', $object_ids ); 2358 $taxonomies = "'" . implode( "', '", array_map( 'esc_sql', $taxonomies ) ) . "'"; 2359 2360 /** 2361 * Filters the terms for a given object or objects. 2362 * 2363 * The `$taxonomies` parameter passed to this filter is formatted as a SQL fragment. The 2364 * {@see 'get_object_terms'} filter is recommended as an alternative. 2365 * 2366 * @since 2.8.0 2367 * 2368 * @param WP_Term[]|int[]|string[]|string $terms Array of terms or a count thereof as a numeric string. 2369 * @param string $object_ids Comma separated list of object IDs for which terms were retrieved. 2370 * @param string $taxonomies SQL fragment of taxonomy names from which terms were retrieved. 2371 * @param array $args Array of arguments for retrieving terms for the given 2372 * object(s). See wp_get_object_terms() for details. 2373 */ 2374 return apply_filters( 'wp_get_object_terms', $terms, $object_ids, $taxonomies, $args ); 2375 } 2376 2377 /** 2378 * Adds a new term to the database. 2379 * 2380 * A non-existent term is inserted in the following sequence: 2381 * 1. The term is added to the term table, then related to the taxonomy. 2382 * 2. If everything is correct, several actions are fired. 2383 * 3. The 'term_id_filter' is evaluated. 2384 * 4. The term cache is cleaned. 2385 * 5. Several more actions are fired. 2386 * 6. An array is returned containing the `term_id` and `term_taxonomy_id`. 2387 * 2388 * If the 'slug' argument is not empty, then it is checked to see if the term 2389 * is invalid. If it is not a valid, existing term, it is added and the term_id 2390 * is given. 2391 * 2392 * If the taxonomy is hierarchical, and the 'parent' argument is not empty, 2393 * the term is inserted and the term_id will be given. 2394 * 2395 * Error handling: 2396 * If `$taxonomy` does not exist or `$term` is empty, 2397 * a WP_Error object will be returned. 2398 * 2399 * If the term already exists on the same hierarchical level, 2400 * or the term slug and name are not unique, a WP_Error object will be returned. 2401 * 2402 * @global wpdb $wpdb WordPress database abstraction object. 2403 * 2404 * @since 2.3.0 2405 * 2406 * @param string $term The term name to add. 2407 * @param string $taxonomy The taxonomy to which to add the term. 2408 * @param array|string $args { 2409 * Optional. Array or query string of arguments for inserting a term. 2410 * 2411 * @type string $alias_of Slug of the term to make this term an alias of. 2412 * Default empty string. Accepts a term slug. 2413 * @type string $description The term description. Default empty string. 2414 * @type int $parent The id of the parent term. Default 0. 2415 * @type string $slug The term slug to use. Default empty string. 2416 * } 2417 * @return array|WP_Error { 2418 * An array of the new term data, WP_Error otherwise. 2419 * 2420 * @type int $term_id The new term ID. 2421 * @type int|string $term_taxonomy_id The new term taxonomy ID. Can be a numeric string. 2422 * } 2423 */ 2424 function wp_insert_term( $term, $taxonomy, $args = array() ) { 2425 global $wpdb; 2426 2427 if ( ! taxonomy_exists( $taxonomy ) ) { 2428 return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy.' ) ); 2429 } 2430 2431 /** 2432 * Filters a term before it is sanitized and inserted into the database. 2433 * 2434 * @since 3.0.0 2435 * @since 6.1.0 The `$args` parameter was added. 2436 * 2437 * @param string|WP_Error $term The term name to add, or a WP_Error object if there's an error. 2438 * @param string $taxonomy Taxonomy slug. 2439 * @param array|string $args Array or query string of arguments passed to wp_insert_term(). 2440 */ 2441 $term = apply_filters( 'pre_insert_term', $term, $taxonomy, $args ); 2442 2443 if ( is_wp_error( $term ) ) { 2444 return $term; 2445 } 2446 2447 if ( is_int( $term ) && 0 === $term ) { 2448 return new WP_Error( 'invalid_term_id', __( 'Invalid term ID.' ) ); 2449 } 2450 2451 if ( '' === trim( $term ) ) { 2452 return new WP_Error( 'empty_term_name', __( 'A name is required for this term.' ) ); 2453 } 2454 2455 $defaults = array( 2456 'alias_of' => '', 2457 'description' => '', 2458 'parent' => 0, 2459 'slug' => '', 2460 ); 2461 $args = wp_parse_args( $args, $defaults ); 2462 2463 if ( (int) $args['parent'] > 0 && ! term_exists( (int) $args['parent'] ) ) { 2464 return new WP_Error( 'missing_parent', __( 'Parent term does not exist.' ) ); 2465 } 2466 2467 $args['name'] = $term; 2468 $args['taxonomy'] = $taxonomy; 2469 2470 // Coerce null description to strings, to avoid database errors. 2471 $args['description'] = (string) $args['description']; 2472 2473 $args = sanitize_term( $args, $taxonomy, 'db' ); 2474 2475 // expected_slashed ($name) 2476 $name = wp_unslash( $args['name'] ); 2477 $description = wp_unslash( $args['description'] ); 2478 $parent = (int) $args['parent']; 2479 2480 // Sanitization could clean the name to an empty string that must be checked again. 2481 if ( '' === $name ) { 2482 return new WP_Error( 'invalid_term_name', __( 'Invalid term name.' ) ); 2483 } 2484 2485 $slug_provided = ! empty( $args['slug'] ); 2486 if ( ! $slug_provided ) { 2487 $slug = sanitize_title( $name ); 2488 } else { 2489 $slug = $args['slug']; 2490 } 2491 2492 $term_group = 0; 2493 if ( $args['alias_of'] ) { 2494 $alias = get_term_by( 'slug', $args['alias_of'], $taxonomy ); 2495 if ( ! empty( $alias->term_group ) ) { 2496 // The alias we want is already in a group, so let's use that one. 2497 $term_group = $alias->term_group; 2498 } elseif ( ! empty( $alias->term_id ) ) { 2499 /* 2500 * The alias is not in a group, so we create a new one 2501 * and add the alias to it. 2502 */ 2503 $term_group = $wpdb->get_var( "SELECT MAX(term_group) FROM $wpdb->terms" ) + 1; 2504 2505 wp_update_term( 2506 $alias->term_id, 2507 $taxonomy, 2508 array( 2509 'term_group' => $term_group, 2510 ) 2511 ); 2512 } 2513 } 2514 2515 /* 2516 * Prevent the creation of terms with duplicate names at the same level of a taxonomy hierarchy, 2517 * unless a unique slug has been explicitly provided. 2518 */ 2519 $name_matches = get_terms( 2520 array( 2521 'taxonomy' => $taxonomy, 2522 'name' => $name, 2523 'hide_empty' => false, 2524 'parent' => $args['parent'], 2525 'update_term_meta_cache' => false, 2526 ) 2527 ); 2528 2529 /* 2530 * The `name` match in `get_terms()` doesn't differentiate accented characters, 2531 * so we do a stricter comparison here. 2532 */ 2533 $name_match = null; 2534 if ( $name_matches ) { 2535 foreach ( $name_matches as $_match ) { 2536 if ( strtolower( $name ) === strtolower( $_match->name ) ) { 2537 $name_match = $_match; 2538 break; 2539 } 2540 } 2541 } 2542 2543 if ( $name_match ) { 2544 $slug_match = get_term_by( 'slug', $slug, $taxonomy ); 2545 if ( ! $slug_provided || $name_match->slug === $slug || $slug_match ) { 2546 if ( is_taxonomy_hierarchical( $taxonomy ) ) { 2547 $siblings = get_terms( 2548 array( 2549 'taxonomy' => $taxonomy, 2550 'get' => 'all', 2551 'parent' => $parent, 2552 'update_term_meta_cache' => false, 2553 ) 2554 ); 2555 2556 $existing_term = null; 2557 $sibling_names = wp_list_pluck( $siblings, 'name' ); 2558 $sibling_slugs = wp_list_pluck( $siblings, 'slug' ); 2559 2560 if ( ( ! $slug_provided || $name_match->slug === $slug ) && in_array( $name, $sibling_names, true ) ) { 2561 $existing_term = $name_match; 2562 } elseif ( $slug_match && in_array( $slug, $sibling_slugs, true ) ) { 2563 $existing_term = $slug_match; 2564 } 2565 2566 if ( $existing_term ) { 2567 return new WP_Error( 'term_exists', __( 'A term with the name provided already exists with this parent.' ), $existing_term->term_id ); 2568 } 2569 } else { 2570 return new WP_Error( 'term_exists', __( 'A term with the name provided already exists in this taxonomy.' ), $name_match->term_id ); 2571 } 2572 } 2573 } 2574 2575 $slug = wp_unique_term_slug( $slug, (object) $args ); 2576 2577 $data = compact( 'name', 'slug', 'term_group' ); 2578 2579 /** 2580 * Filters term data before it is inserted into the database. 2581 * 2582 * @since 4.7.0 2583 * 2584 * @param array $data Term data to be inserted. 2585 * @param string $taxonomy Taxonomy slug. 2586 * @param array $args Arguments passed to wp_insert_term(). 2587 */ 2588 $data = apply_filters( 'wp_insert_term_data', $data, $taxonomy, $args ); 2589 2590 if ( false === $wpdb->insert( $wpdb->terms, $data ) ) { 2591 return new WP_Error( 'db_insert_error', __( 'Could not insert term into the database.' ), $wpdb->last_error ); 2592 } 2593 2594 $term_id = (int) $wpdb->insert_id; 2595 2596 // Seems unreachable. However, is used in the case that a term name is provided, which sanitizes to an empty string. 2597 if ( empty( $slug ) ) { 2598 $slug = sanitize_title( $slug, $term_id ); 2599 2600 /** This action is documented in wp-includes/taxonomy.php */ 2601 do_action( 'edit_terms', $term_id, $taxonomy ); 2602 $wpdb->update( $wpdb->terms, compact( 'slug' ), compact( 'term_id' ) ); 2603 2604 /** This action is documented in wp-includes/taxonomy.php */ 2605 do_action( 'edited_terms', $term_id, $taxonomy ); 2606 } 2607 2608 $tt_id = $wpdb->get_var( $wpdb->prepare( "SELECT tt.term_taxonomy_id FROM $wpdb->term_taxonomy AS tt INNER JOIN $wpdb->terms AS t ON tt.term_id = t.term_id WHERE tt.taxonomy = %s AND t.term_id = %d", $taxonomy, $term_id ) ); 2609 2610 if ( ! empty( $tt_id ) ) { 2611 return array( 2612 'term_id' => $term_id, 2613 'term_taxonomy_id' => $tt_id, 2614 ); 2615 } 2616 2617 if ( false === $wpdb->insert( $wpdb->term_taxonomy, compact( 'term_id', 'taxonomy', 'description', 'parent' ) + array( 'count' => 0 ) ) ) { 2618 return new WP_Error( 'db_insert_error', __( 'Could not insert term taxonomy into the database.' ), $wpdb->last_error ); 2619 } 2620 2621 $tt_id = (int) $wpdb->insert_id; 2622 2623 /* 2624 * Confidence check: if we just created a term with the same parent + taxonomy + slug but a higher term_id than 2625 * an existing term, then we have unwittingly created a duplicate term. Delete the dupe, and use the term_id 2626 * and term_taxonomy_id of the older term instead. Then return out of the function so that the "create" hooks 2627 * are not fired. 2628 */ 2629 $duplicate_term = $wpdb->get_row( $wpdb->prepare( "SELECT t.term_id, t.slug, tt.term_taxonomy_id, tt.taxonomy FROM $wpdb->terms AS t INNER JOIN $wpdb->term_taxonomy AS tt ON ( tt.term_id = t.term_id ) WHERE t.slug = %s AND tt.parent = %d AND tt.taxonomy = %s AND t.term_id < %d AND tt.term_taxonomy_id != %d", $slug, $parent, $taxonomy, $term_id, $tt_id ) ); 2630 2631 /** 2632 * Filters the duplicate term check that takes place during term creation. 2633 * 2634 * Term parent + taxonomy + slug combinations are meant to be unique, and wp_insert_term() 2635 * performs a last-minute confirmation of this uniqueness before allowing a new term 2636 * to be created. Plugins with different uniqueness requirements may use this filter 2637 * to bypass or modify the duplicate-term check. 2638 * 2639 * @since 5.1.0 2640 * 2641 * @param object $duplicate_term Duplicate term row from terms table, if found. 2642 * @param string $term Term being inserted. 2643 * @param string $taxonomy Taxonomy name. 2644 * @param array $args Arguments passed to wp_insert_term(). 2645 * @param int $tt_id term_taxonomy_id for the newly created term. 2646 */ 2647 $duplicate_term = apply_filters( 'wp_insert_term_duplicate_term_check', $duplicate_term, $term, $taxonomy, $args, $tt_id ); 2648 2649 if ( $duplicate_term ) { 2650 $wpdb->delete( $wpdb->terms, array( 'term_id' => $term_id ) ); 2651 $wpdb->delete( $wpdb->term_taxonomy, array( 'term_taxonomy_id' => $tt_id ) ); 2652 2653 $term_id = (int) $duplicate_term->term_id; 2654 $tt_id = (int) $duplicate_term->term_taxonomy_id; 2655 2656 clean_term_cache( $term_id, $taxonomy ); 2657 return array( 2658 'term_id' => $term_id, 2659 'term_taxonomy_id' => $tt_id, 2660 ); 2661 } 2662 2663 /** 2664 * Fires immediately after a new term is created, before the term cache is cleaned. 2665 * 2666 * The {@see 'create_$taxonomy'} hook is also available for targeting a specific 2667 * taxonomy. 2668 * 2669 * @since 2.3.0 2670 * @since 6.1.0 The `$args` parameter was added. 2671 * 2672 * @param int $term_id Term ID. 2673 * @param int $tt_id Term taxonomy ID. 2674 * @param string $taxonomy Taxonomy slug. 2675 * @param array $args Arguments passed to wp_insert_term(). 2676 */ 2677 do_action( 'create_term', $term_id, $tt_id, $taxonomy, $args ); 2678 2679 /** 2680 * Fires after a new term is created for a specific taxonomy. 2681 * 2682 * The dynamic portion of the hook name, `$taxonomy`, refers 2683 * to the slug of the taxonomy the term was created for. 2684 * 2685 * Possible hook names include: 2686 * 2687 * - `create_category` 2688 * - `create_post_tag` 2689 * 2690 * @since 2.3.0 2691 * @since 6.1.0 The `$args` parameter was added. 2692 * 2693 * @param int $term_id Term ID. 2694 * @param int $tt_id Term taxonomy ID. 2695 * @param array $args Arguments passed to wp_insert_term(). 2696 */ 2697 do_action( "create_{$taxonomy}", $term_id, $tt_id, $args ); 2698 2699 /** 2700 * Filters the term ID after a new term is created. 2701 * 2702 * @since 2.3.0 2703 * @since 6.1.0 The `$args` parameter was added. 2704 * 2705 * @param int $term_id Term ID. 2706 * @param int $tt_id Term taxonomy ID. 2707 * @param array $args Arguments passed to wp_insert_term(). 2708 */ 2709 $term_id = apply_filters( 'term_id_filter', $term_id, $tt_id, $args ); 2710 2711 clean_term_cache( $term_id, $taxonomy ); 2712 2713 /** 2714 * Fires after a new term is created, and after the term cache has been cleaned. 2715 * 2716 * The {@see 'created_$taxonomy'} hook is also available for targeting a specific 2717 * taxonomy. 2718 * 2719 * @since 2.3.0 2720 * @since 6.1.0 The `$args` parameter was added. 2721 * 2722 * @param int $term_id Term ID. 2723 * @param int $tt_id Term taxonomy ID. 2724 * @param string $taxonomy Taxonomy slug. 2725 * @param array $args Arguments passed to wp_insert_term(). 2726 */ 2727 do_action( 'created_term', $term_id, $tt_id, $taxonomy, $args ); 2728 2729 /** 2730 * Fires after a new term in a specific taxonomy is created, and after the term 2731 * cache has been cleaned. 2732 * 2733 * The dynamic portion of the hook name, `$taxonomy`, refers to the taxonomy slug. 2734 * 2735 * Possible hook names include: 2736 * 2737 * - `created_category` 2738 * - `created_post_tag` 2739 * 2740 * @since 2.3.0 2741 * @since 6.1.0 The `$args` parameter was added. 2742 * 2743 * @param int $term_id Term ID. 2744 * @param int $tt_id Term taxonomy ID. 2745 * @param array $args Arguments passed to wp_insert_term(). 2746 */ 2747 do_action( "created_{$taxonomy}", $term_id, $tt_id, $args ); 2748 2749 /** 2750 * Fires after a term has been saved, and the term cache has been cleared. 2751 * 2752 * The {@see 'saved_$taxonomy'} hook is also available for targeting a specific 2753 * taxonomy. 2754 * 2755 * @since 5.5.0 2756 * @since 6.1.0 The `$args` parameter was added. 2757 * 2758 * @param int $term_id Term ID. 2759 * @param int $tt_id Term taxonomy ID. 2760 * @param string $taxonomy Taxonomy slug. 2761 * @param bool $update Whether this is an existing term being updated. 2762 * @param array $args Arguments passed to wp_insert_term(). 2763 */ 2764 do_action( 'saved_term', $term_id, $tt_id, $taxonomy, false, $args ); 2765 2766 /** 2767 * Fires after a term in a specific taxonomy has been saved, and the term 2768 * cache has been cleared. 2769 * 2770 * The dynamic portion of the hook name, `$taxonomy`, refers to the taxonomy slug. 2771 * 2772 * Possible hook names include: 2773 * 2774 * - `saved_category` 2775 * - `saved_post_tag` 2776 * 2777 * @since 5.5.0 2778 * @since 6.1.0 The `$args` parameter was added. 2779 * 2780 * @param int $term_id Term ID. 2781 * @param int $tt_id Term taxonomy ID. 2782 * @param bool $update Whether this is an existing term being updated. 2783 * @param array $args Arguments passed to wp_insert_term(). 2784 */ 2785 do_action( "saved_{$taxonomy}", $term_id, $tt_id, false, $args ); 2786 2787 return array( 2788 'term_id' => $term_id, 2789 'term_taxonomy_id' => $tt_id, 2790 ); 2791 } 2792 2793 /** 2794 * Creates term and taxonomy relationships. 2795 * 2796 * Relates an object (post, link, etc.) to a term and taxonomy type. Creates the 2797 * term and taxonomy relationship if it doesn't already exist. Creates a term if 2798 * it doesn't exist (using the slug). 2799 * 2800 * A relationship means that the term is grouped in or belongs to the taxonomy. 2801 * A term has no meaning until it is given context by defining which taxonomy it 2802 * exists under. 2803 * 2804 * @since 2.3.0 2805 * 2806 * @global wpdb $wpdb WordPress database abstraction object. 2807 * 2808 * @param int $object_id The object to relate to. 2809 * @param string|int|array $terms A single term slug, single term ID, or array of either term slugs or IDs. 2810 * Will replace all existing related terms in this taxonomy. Passing an 2811 * empty array will remove all related terms. 2812 * @param string $taxonomy The context in which to relate the term to the object. 2813 * @param bool $append Optional. If false will delete difference of terms. Default false. 2814 * @return array|WP_Error Term taxonomy IDs of the affected terms or WP_Error on failure. 2815 */ 2816 function wp_set_object_terms( $object_id, $terms, $taxonomy, $append = false ) { 2817 global $wpdb; 2818 2819 $object_id = (int) $object_id; 2820 2821 if ( ! taxonomy_exists( $taxonomy ) ) { 2822 return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy.' ) ); 2823 } 2824 2825 if ( empty( $terms ) ) { 2826 $terms = array(); 2827 } elseif ( ! is_array( $terms ) ) { 2828 $terms = array( $terms ); 2829 } 2830 2831 if ( ! $append ) { 2832 $old_tt_ids = wp_get_object_terms( 2833 $object_id, 2834 $taxonomy, 2835 array( 2836 'fields' => 'tt_ids', 2837 'orderby' => 'none', 2838 'update_term_meta_cache' => false, 2839 ) 2840 ); 2841 } else { 2842 $old_tt_ids = array(); 2843 } 2844 2845 $tt_ids = array(); 2846 $new_tt_ids = array(); 2847 2848 foreach ( (array) $terms as $term ) { 2849 if ( '' === trim( $term ) ) { 2850 continue; 2851 } 2852 2853 $term_info = term_exists( $term, $taxonomy ); 2854 2855 if ( ! $term_info ) { 2856 // Skip if a non-existent term ID is passed. 2857 if ( is_int( $term ) ) { 2858 continue; 2859 } 2860 2861 $term_info = wp_insert_term( $term, $taxonomy ); 2862 } 2863 2864 if ( is_wp_error( $term_info ) ) { 2865 return $term_info; 2866 } 2867 2868 $tt_id = $term_info['term_taxonomy_id']; 2869 $tt_ids[] = $tt_id; 2870 2871 if ( $wpdb->get_var( $wpdb->prepare( "SELECT term_taxonomy_id FROM $wpdb->term_relationships WHERE object_id = %d AND term_taxonomy_id = %d", $object_id, $tt_id ) ) ) { 2872 continue; 2873 } 2874 2875 /** 2876 * Fires immediately before an object-term relationship is added. 2877 * 2878 * @since 2.9.0 2879 * @since 4.7.0 Added the `$taxonomy` parameter. 2880 * 2881 * @param int $object_id Object ID. 2882 * @param int $tt_id Term taxonomy ID. 2883 * @param string $taxonomy Taxonomy slug. 2884 */ 2885 do_action( 'add_term_relationship', $object_id, $tt_id, $taxonomy ); 2886 2887 $wpdb->insert( 2888 $wpdb->term_relationships, 2889 array( 2890 'object_id' => $object_id, 2891 'term_taxonomy_id' => $tt_id, 2892 ) 2893 ); 2894 2895 /** 2896 * Fires immediately after an object-term relationship is added. 2897 * 2898 * @since 2.9.0 2899 * @since 4.7.0 Added the `$taxonomy` parameter. 2900 * 2901 * @param int $object_id Object ID. 2902 * @param int $tt_id Term taxonomy ID. 2903 * @param string $taxonomy Taxonomy slug. 2904 */ 2905 do_action( 'added_term_relationship', $object_id, $tt_id, $taxonomy ); 2906 2907 $new_tt_ids[] = $tt_id; 2908 } 2909 2910 if ( $new_tt_ids ) { 2911 wp_update_term_count( $new_tt_ids, $taxonomy ); 2912 } 2913 2914 if ( ! $append ) { 2915 $delete_tt_ids = array_diff( $old_tt_ids, $tt_ids ); 2916 2917 if ( $delete_tt_ids ) { 2918 $in_delete_tt_ids = "'" . implode( "', '", $delete_tt_ids ) . "'"; 2919 $delete_term_ids = $wpdb->get_col( $wpdb->prepare( "SELECT tt.term_id FROM $wpdb->term_taxonomy AS tt WHERE tt.taxonomy = %s AND tt.term_taxonomy_id IN ($in_delete_tt_ids)", $taxonomy ) ); 2920 $delete_term_ids = array_map( 'intval', $delete_term_ids ); 2921 2922 $remove = wp_remove_object_terms( $object_id, $delete_term_ids, $taxonomy ); 2923 if ( is_wp_error( $remove ) ) { 2924 return $remove; 2925 } 2926 } 2927 } 2928 2929 $t = get_taxonomy( $taxonomy ); 2930 2931 if ( ! $append && isset( $t->sort ) && $t->sort ) { 2932 $values = array(); 2933 $term_order = 0; 2934 2935 $final_tt_ids = wp_get_object_terms( 2936 $object_id, 2937 $taxonomy, 2938 array( 2939 'fields' => 'tt_ids', 2940 'update_term_meta_cache' => false, 2941 ) 2942 ); 2943 2944 foreach ( $tt_ids as $tt_id ) { 2945 if ( in_array( (int) $tt_id, $final_tt_ids, true ) ) { 2946 $values[] = $wpdb->prepare( '(%d, %d, %d)', $object_id, $tt_id, ++$term_order ); 2947 } 2948 } 2949 2950 if ( $values ) { 2951 if ( false === $wpdb->query( "INSERT INTO $wpdb->term_relationships (object_id, term_taxonomy_id, term_order) VALUES " . implode( ',', $values ) . ' ON DUPLICATE KEY UPDATE term_order = VALUES(term_order)' ) ) { 2952 return new WP_Error( 'db_insert_error', __( 'Could not insert term relationship into the database.' ), $wpdb->last_error ); 2953 } 2954 } 2955 } 2956 2957 wp_cache_delete( $object_id, $taxonomy . '_relationships' ); 2958 wp_cache_set_terms_last_changed(); 2959 2960 /** 2961 * Fires after an object's terms have been set. 2962 * 2963 * @since 2.8.0 2964 * 2965 * @param int $object_id Object ID. 2966 * @param array $terms An array of object term IDs or slugs. 2967 * @param array $tt_ids An array of term taxonomy IDs. 2968 * @param string $taxonomy Taxonomy slug. 2969 * @param bool $append Whether to append new terms to the old terms. 2970 * @param array $old_tt_ids Old array of term taxonomy IDs. 2971 */ 2972 do_action( 'set_object_terms', $object_id, $terms, $tt_ids, $taxonomy, $append, $old_tt_ids ); 2973 2974 return $tt_ids; 2975 } 2976 2977 /** 2978 * Adds term(s) associated with a given object. 2979 * 2980 * @since 3.6.0 2981 * 2982 * @param int $object_id The ID of the object to which the terms will be added. 2983 * @param string|int|array $terms The slug(s) or ID(s) of the term(s) to add. 2984 * @param array|string $taxonomy Taxonomy name. 2985 * @return array|WP_Error Term taxonomy IDs of the affected terms. 2986 */ 2987 function wp_add_object_terms( $object_id, $terms, $taxonomy ) { 2988 return wp_set_object_terms( $object_id, $terms, $taxonomy, true ); 2989 } 2990 2991 /** 2992 * Removes term(s) associated with a given object. 2993 * 2994 * @since 3.6.0 2995 * 2996 * @global wpdb $wpdb WordPress database abstraction object. 2997 * 2998 * @param int $object_id The ID of the object from which the terms will be removed. 2999 * @param string|int|array $terms The slug(s) or ID(s) of the term(s) to remove. 3000 * @param string $taxonomy Taxonomy name. 3001 * @return bool|WP_Error True on success, false or WP_Error on failure. 3002 */ 3003 function wp_remove_object_terms( $object_id, $terms, $taxonomy ) { 3004 global $wpdb; 3005 3006 $object_id = (int) $object_id; 3007 3008 if ( ! taxonomy_exists( $taxonomy ) ) { 3009 return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy.' ) ); 3010 } 3011 3012 if ( ! is_array( $terms ) ) { 3013 $terms = array( $terms ); 3014 } 3015 3016 $tt_ids = array(); 3017 3018 foreach ( (array) $terms as $term ) { 3019 if ( '' === trim( $term ) ) { 3020 continue; 3021 } 3022 3023 $term_info = term_exists( $term, $taxonomy ); 3024 if ( ! $term_info ) { 3025 // Skip if a non-existent term ID is passed. 3026 if ( is_int( $term ) ) { 3027 continue; 3028 } 3029 } 3030 3031 if ( is_wp_error( $term_info ) ) { 3032 return $term_info; 3033 } 3034 3035 $tt_ids[] = $term_info['term_taxonomy_id']; 3036 } 3037 3038 if ( $tt_ids ) { 3039 $in_tt_ids = "'" . implode( "', '", $tt_ids ) . "'"; 3040 3041 /** 3042 * Fires immediately before an object-term relationship is deleted. 3043 * 3044 * @since 2.9.0 3045 * @since 4.7.0 Added the `$taxonomy` parameter. 3046 * 3047 * @param int $object_id Object ID. 3048 * @param array $tt_ids An array of term taxonomy IDs. 3049 * @param string $taxonomy Taxonomy slug. 3050 */ 3051 do_action( 'delete_term_relationships', $object_id, $tt_ids, $taxonomy ); 3052 3053 $deleted = $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->term_relationships WHERE object_id = %d AND term_taxonomy_id IN ($in_tt_ids)", $object_id ) ); 3054 3055 wp_cache_delete( $object_id, $taxonomy . '_relationships' ); 3056 wp_cache_set_terms_last_changed(); 3057 3058 /** 3059 * Fires immediately after an object-term relationship is deleted. 3060 * 3061 * @since 2.9.0 3062 * @since 4.7.0 Added the `$taxonomy` parameter. 3063 * 3064 * @param int $object_id Object ID. 3065 * @param array $tt_ids An array of term taxonomy IDs. 3066 * @param string $taxonomy Taxonomy slug. 3067 */ 3068 do_action( 'deleted_term_relationships', $object_id, $tt_ids, $taxonomy ); 3069 3070 wp_update_term_count( $tt_ids, $taxonomy ); 3071 3072 return (bool) $deleted; 3073 } 3074 3075 return false; 3076 } 3077 3078 /** 3079 * Makes term slug unique, if it isn't already. 3080 * 3081 * The `$slug` has to be unique global to every taxonomy, meaning that one 3082 * taxonomy term can't have a matching slug with another taxonomy term. Each 3083 * slug has to be globally unique for every taxonomy. 3084 * 3085 * The way this works is that if the taxonomy that the term belongs to is 3086 * hierarchical and has a parent, it will append that parent to the $slug. 3087 * 3088 * If that still doesn't return a unique slug, then it tries to append a number 3089 * until it finds a number that is truly unique. 3090 * 3091 * The only purpose for `$term` is for appending a parent, if one exists. 3092 * 3093 * @since 2.3.0 3094 * 3095 * @global wpdb $wpdb WordPress database abstraction object. 3096 * 3097 * @param string $slug The string that will be tried for a unique slug. 3098 * @param object $term The term object that the `$slug` will belong to. 3099 * @return string Will return a true unique slug. 3100 */ 3101 function wp_unique_term_slug( $slug, $term ) { 3102 global $wpdb; 3103 3104 $needs_suffix = true; 3105 $original_slug = $slug; 3106 3107 // As of 4.1, duplicate slugs are allowed as long as they're in different taxonomies. 3108 if ( ! term_exists( $slug ) || get_option( 'db_version' ) >= 30133 && ! get_term_by( 'slug', $slug, $term->taxonomy ) ) { 3109 $needs_suffix = false; 3110 } 3111 3112 /* 3113 * If the taxonomy supports hierarchy and the term has a parent, make the slug unique 3114 * by incorporating parent slugs. 3115 */ 3116 $parent_suffix = ''; 3117 if ( $needs_suffix && is_taxonomy_hierarchical( $term->taxonomy ) && ! empty( $term->parent ) ) { 3118 $the_parent = $term->parent; 3119 while ( ! empty( $the_parent ) ) { 3120 $parent_term = get_term( $the_parent, $term->taxonomy ); 3121 if ( is_wp_error( $parent_term ) || empty( $parent_term ) ) { 3122 break; 3123 } 3124 $parent_suffix .= '-' . $parent_term->slug; 3125 if ( ! term_exists( $slug . $parent_suffix ) ) { 3126 break; 3127 } 3128 3129 if ( empty( $parent_term->parent ) ) { 3130 break; 3131 } 3132 $the_parent = $parent_term->parent; 3133 } 3134 } 3135 3136 // If we didn't get a unique slug, try appending a number to make it unique. 3137 3138 /** 3139 * Filters whether the proposed unique term slug is bad. 3140 * 3141 * @since 4.3.0 3142 * 3143 * @param bool $needs_suffix Whether the slug needs to be made unique with a suffix. 3144 * @param string $slug The slug. 3145 * @param object $term Term object. 3146 */ 3147 if ( apply_filters( 'wp_unique_term_slug_is_bad_slug', $needs_suffix, $slug, $term ) ) { 3148 if ( $parent_suffix ) { 3149 $slug .= $parent_suffix; 3150 } 3151 3152 if ( ! empty( $term->term_id ) ) { 3153 $query = $wpdb->prepare( "SELECT slug FROM $wpdb->terms WHERE slug = %s AND term_id != %d", $slug, $term->term_id ); 3154 } else { 3155 $query = $wpdb->prepare( "SELECT slug FROM $wpdb->terms WHERE slug = %s", $slug ); 3156 } 3157 3158 if ( $wpdb->get_var( $query ) ) { // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared 3159 $num = 2; 3160 do { 3161 $alt_slug = $slug . "-$num"; 3162 ++$num; 3163 $slug_check = $wpdb->get_var( $wpdb->prepare( "SELECT slug FROM $wpdb->terms WHERE slug = %s", $alt_slug ) ); 3164 } while ( $slug_check ); 3165 $slug = $alt_slug; 3166 } 3167 } 3168 3169 /** 3170 * Filters the unique term slug. 3171 * 3172 * @since 4.3.0 3173 * 3174 * @param string $slug Unique term slug. 3175 * @param object $term Term object. 3176 * @param string $original_slug Slug originally passed to the function for testing. 3177 */ 3178 return apply_filters( 'wp_unique_term_slug', $slug, $term, $original_slug ); 3179 } 3180 3181 /** 3182 * Updates term based on arguments provided. 3183 * 3184 * The `$args` will indiscriminately override all values with the same field name. 3185 * Care must be taken to not override important information need to update or 3186 * update will fail (or perhaps create a new term, neither would be acceptable). 3187 * 3188 * Defaults will set 'alias_of', 'description', 'parent', and 'slug' if not 3189 * defined in `$args` already. 3190 * 3191 * 'alias_of' will create a term group, if it doesn't already exist, and 3192 * update it for the `$term`. 3193 * 3194 * If the 'slug' argument in `$args` is missing, then the 'name' will be used. 3195 * If you set 'slug' and it isn't unique, then a WP_Error is returned. 3196 * If you don't pass any slug, then a unique one will be created. 3197 * 3198 * @since 2.3.0 3199 * 3200 * @global wpdb $wpdb WordPress database abstraction object. 3201 * 3202 * @param int $term_id The ID of the term. 3203 * @param string $taxonomy The taxonomy of the term. 3204 * @param array $args { 3205 * Optional. Array of arguments for updating a term. 3206 * 3207 * @type string $alias_of Slug of the term to make this term an alias of. 3208 * Default empty string. Accepts a term slug. 3209 * @type string $description The term description. Default empty string. 3210 * @type int $parent The id of the parent term. Default 0. 3211 * @type string $slug The term slug to use. Default empty string. 3212 * } 3213 * @return array|WP_Error An array containing the `term_id` and `term_taxonomy_id`, 3214 * WP_Error otherwise. 3215 */ 3216 function wp_update_term( $term_id, $taxonomy, $args = array() ) { 3217 global $wpdb; 3218 3219 if ( ! taxonomy_exists( $taxonomy ) ) { 3220 return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy.' ) ); 3221 } 3222 3223 $term_id = (int) $term_id; 3224 3225 // First, get all of the original args. 3226 $term = get_term( $term_id, $taxonomy ); 3227 3228 if ( is_wp_error( $term ) ) { 3229 return $term; 3230 } 3231 3232 if ( ! $term ) { 3233 return new WP_Error( 'invalid_term', __( 'Empty Term.' ) ); 3234 } 3235 3236 $term = (array) $term->data; 3237 3238 // Escape data pulled from DB. 3239 $term = wp_slash( $term ); 3240 3241 // Merge old and new args with new args overwriting old ones. 3242 $args = array_merge( $term, $args ); 3243 3244 $defaults = array( 3245 'alias_of' => '', 3246 'description' => '', 3247 'parent' => 0, 3248 'slug' => '', 3249 ); 3250 $args = wp_parse_args( $args, $defaults ); 3251 $args = sanitize_term( $args, $taxonomy, 'db' ); 3252 $parsed_args = $args; 3253 3254 // expected_slashed ($name) 3255 $name = wp_unslash( $args['name'] ); 3256 $description = wp_unslash( $args['description'] ); 3257 3258 $parsed_args['name'] = $name; 3259 $parsed_args['description'] = $description; 3260 3261 if ( '' === trim( $name ) ) { 3262 return new WP_Error( 'empty_term_name', __( 'A name is required for this term.' ) ); 3263 } 3264 3265 if ( (int) $parsed_args['parent'] > 0 && ! term_exists( (int) $parsed_args['parent'] ) ) { 3266 return new WP_Error( 'missing_parent', __( 'Parent term does not exist.' ) ); 3267 } 3268 3269 $empty_slug = false; 3270 if ( empty( $args['slug'] ) ) { 3271 $empty_slug = true; 3272 $slug = sanitize_title( $name ); 3273 } else { 3274 $slug = $args['slug']; 3275 } 3276 3277 $parsed_args['slug'] = $slug; 3278 3279 $term_group = isset( $parsed_args['term_group'] ) ? $parsed_args['term_group'] : 0; 3280 if ( $args['alias_of'] ) { 3281 $alias = get_term_by( 'slug', $args['alias_of'], $taxonomy ); 3282 if ( ! empty( $alias->term_group ) ) { 3283 // The alias we want is already in a group, so let's use that one. 3284 $term_group = $alias->term_group; 3285 } elseif ( ! empty( $alias->term_id ) ) { 3286 /* 3287 * The alias is not in a group, so we create a new one 3288 * and add the alias to it. 3289 */ 3290 $term_group = $wpdb->get_var( "SELECT MAX(term_group) FROM $wpdb->terms" ) + 1; 3291 3292 wp_update_term( 3293 $alias->term_id, 3294 $taxonomy, 3295 array( 3296 'term_group' => $term_group, 3297 ) 3298 ); 3299 } 3300 3301 $parsed_args['term_group'] = $term_group; 3302 } 3303 3304 /** 3305 * Filters the term parent. 3306 * 3307 * Hook to this filter to see if it will cause a hierarchy loop. 3308 * 3309 * @since 3.1.0 3310 * 3311 * @param int $parent_term ID of the parent term. 3312 * @param int $term_id Term ID. 3313 * @param string $taxonomy Taxonomy slug. 3314 * @param array $parsed_args An array of potentially altered update arguments for the given term. 3315 * @param array $args Arguments passed to wp_update_term(). 3316 */ 3317 $parent = (int) apply_filters( 'wp_update_term_parent', $args['parent'], $term_id, $taxonomy, $parsed_args, $args ); 3318 3319 // Check for duplicate slug. 3320 $duplicate = get_term_by( 'slug', $slug, $taxonomy ); 3321 if ( $duplicate && $duplicate->term_id !== $term_id ) { 3322 /* 3323 * If an empty slug was passed or the parent changed, reset the slug to something unique. 3324 * Otherwise, bail. 3325 */ 3326 if ( $empty_slug || ( $parent !== (int) $term['parent'] ) ) { 3327 $slug = wp_unique_term_slug( $slug, (object) $args ); 3328 } else { 3329 /* translators: %s: Taxonomy term slug. */ 3330 return new WP_Error( 'duplicate_term_slug', sprintf( __( 'The slug “%s” is already in use by another term.' ), $slug ) ); 3331 } 3332 } 3333 3334 $tt_id = (int) $wpdb->get_var( $wpdb->prepare( "SELECT tt.term_taxonomy_id FROM $wpdb->term_taxonomy AS tt INNER JOIN $wpdb->terms AS t ON tt.term_id = t.term_id WHERE tt.taxonomy = %s AND t.term_id = %d", $taxonomy, $term_id ) ); 3335 3336 // Check whether this is a shared term that needs splitting. 3337 $_term_id = _split_shared_term( $term_id, $tt_id ); 3338 if ( ! is_wp_error( $_term_id ) ) { 3339 $term_id = $_term_id; 3340 } 3341 3342 /** 3343 * Fires immediately before the given terms are edited. 3344 * 3345 * @since 2.9.0 3346 * @since 6.1.0 The `$args` parameter was added. 3347 * 3348 * @param int $term_id Term ID. 3349 * @param string $taxonomy Taxonomy slug. 3350 * @param array $args Arguments passed to wp_update_term(). 3351 */ 3352 do_action( 'edit_terms', $term_id, $taxonomy, $args ); 3353 3354 $data = compact( 'name', 'slug', 'term_group' ); 3355 3356 /** 3357 * Filters term data before it is updated in the database. 3358 * 3359 * @since 4.7.0 3360 * 3361 * @param array $data Term data to be updated. 3362 * @param int $term_id Term ID. 3363 * @param string $taxonomy Taxonomy slug. 3364 * @param array $args Arguments passed to wp_update_term(). 3365 */ 3366 $data = apply_filters( 'wp_update_term_data', $data, $term_id, $taxonomy, $args ); 3367 3368 $wpdb->update( $wpdb->terms, $data, compact( 'term_id' ) ); 3369 3370 if ( empty( $slug ) ) { 3371 $slug = sanitize_title( $name, $term_id ); 3372 $wpdb->update( $wpdb->terms, compact( 'slug' ), compact( 'term_id' ) ); 3373 } 3374 3375 /** 3376 * Fires immediately after a term is updated in the database, but before its 3377 * term-taxonomy relationship is updated. 3378 * 3379 * @since 2.9.0 3380 * @since 6.1.0 The `$args` parameter was added. 3381 * 3382 * @param int $term_id Term ID. 3383 * @param string $taxonomy Taxonomy slug. 3384 * @param array $args Arguments passed to wp_update_term(). 3385 */ 3386 do_action( 'edited_terms', $term_id, $taxonomy, $args ); 3387 3388 /** 3389 * Fires immediate before a term-taxonomy relationship is updated. 3390 * 3391 * @since 2.9.0 3392 * @since 6.1.0 The `$args` parameter was added. 3393 * 3394 * @param int $tt_id Term taxonomy ID. 3395 * @param string $taxonomy Taxonomy slug. 3396 * @param array $args Arguments passed to wp_update_term(). 3397 */ 3398 do_action( 'edit_term_taxonomy', $tt_id, $taxonomy, $args ); 3399 3400 $wpdb->update( $wpdb->term_taxonomy, compact( 'term_id', 'taxonomy', 'description', 'parent' ), array( 'term_taxonomy_id' => $tt_id ) ); 3401 3402 /** 3403 * Fires immediately after a term-taxonomy relationship is updated. 3404 * 3405 * @since 2.9.0 3406 * @since 6.1.0 The `$args` parameter was added. 3407 * 3408 * @param int $tt_id Term taxonomy ID. 3409 * @param string $taxonomy Taxonomy slug. 3410 * @param array $args Arguments passed to wp_update_term(). 3411 */ 3412 do_action( 'edited_term_taxonomy', $tt_id, $taxonomy, $args ); 3413 3414 /** 3415 * Fires after a term has been updated, but before the term cache has been cleaned. 3416 * 3417 * The {@see 'edit_$taxonomy'} hook is also available for targeting a specific 3418 * taxonomy. 3419 * 3420 * @since 2.3.0 3421 * @since 6.1.0 The `$args` parameter was added. 3422 * 3423 * @param int $term_id Term ID. 3424 * @param int $tt_id Term taxonomy ID. 3425 * @param string $taxonomy Taxonomy slug. 3426 * @param array $args Arguments passed to wp_update_term(). 3427 */ 3428 do_action( 'edit_term', $term_id, $tt_id, $taxonomy, $args ); 3429 3430 /** 3431 * Fires after a term in a specific taxonomy has been updated, but before the term 3432 * cache has been cleaned. 3433 * 3434 * The dynamic portion of the hook name, `$taxonomy`, refers to the taxonomy slug. 3435 * 3436 * Possible hook names include: 3437 * 3438 * - `edit_category` 3439 * - `edit_post_tag` 3440 * 3441 * @since 2.3.0 3442 * @since 6.1.0 The `$args` parameter was added. 3443 * 3444 * @param int $term_id Term ID. 3445 * @param int $tt_id Term taxonomy ID. 3446 * @param array $args Arguments passed to wp_update_term(). 3447 */ 3448 do_action( "edit_{$taxonomy}", $term_id, $tt_id, $args ); 3449 3450 /** This filter is documented in wp-includes/taxonomy.php */ 3451 $term_id = apply_filters( 'term_id_filter', $term_id, $tt_id ); 3452 3453 clean_term_cache( $term_id, $taxonomy ); 3454 3455 /** 3456 * Fires after a term has been updated, and the term cache has been cleaned. 3457 * 3458 * The {@see 'edited_$taxonomy'} hook is also available for targeting a specific 3459 * taxonomy. 3460 * 3461 * @since 2.3.0 3462 * @since 6.1.0 The `$args` parameter was added. 3463 * 3464 * @param int $term_id Term ID. 3465 * @param int $tt_id Term taxonomy ID. 3466 * @param string $taxonomy Taxonomy slug. 3467 * @param array $args Arguments passed to wp_update_term(). 3468 */ 3469 do_action( 'edited_term', $term_id, $tt_id, $taxonomy, $args ); 3470 3471 /** 3472 * Fires after a term for a specific taxonomy has been updated, and the term 3473 * cache has been cleaned. 3474 * 3475 * The dynamic portion of the hook name, `$taxonomy`, refers to the taxonomy slug. 3476 * 3477 * Possible hook names include: 3478 * 3479 * - `edited_category` 3480 * - `edited_post_tag` 3481 * 3482 * @since 2.3.0 3483 * @since 6.1.0 The `$args` parameter was added. 3484 * 3485 * @param int $term_id Term ID. 3486 * @param int $tt_id Term taxonomy ID. 3487 * @param array $args Arguments passed to wp_update_term(). 3488 */ 3489 do_action( "edited_{$taxonomy}", $term_id, $tt_id, $args ); 3490 3491 /** This action is documented in wp-includes/taxonomy.php */ 3492 do_action( 'saved_term', $term_id, $tt_id, $taxonomy, true, $args ); 3493 3494 /** This action is documented in wp-includes/taxonomy.php */ 3495 do_action( "saved_{$taxonomy}", $term_id, $tt_id, true, $args ); 3496 3497 return array( 3498 'term_id' => $term_id, 3499 'term_taxonomy_id' => $tt_id, 3500 ); 3501 } 3502 3503 /** 3504 * Enables or disables term counting. 3505 * 3506 * @since 2.5.0 3507 * 3508 * @param bool $defer Optional. Enable if true, disable if false. 3509 * @return bool Whether term counting is enabled or disabled. 3510 */ 3511 function wp_defer_term_counting( $defer = null ) { 3512 static $_defer = false; 3513 3514 if ( is_bool( $defer ) ) { 3515 $_defer = $defer; 3516 // Flush any deferred counts. 3517 if ( ! $defer ) { 3518 wp_update_term_count( null, null, true ); 3519 } 3520 } 3521 3522 return $_defer; 3523 } 3524 3525 /** 3526 * Updates the amount of terms in taxonomy. 3527 * 3528 * If there is a taxonomy callback applied, then it will be called for updating 3529 * the count. 3530 * 3531 * The default action is to count what the amount of terms have the relationship 3532 * of term ID. Once that is done, then update the database. 3533 * 3534 * @since 2.3.0 3535 * 3536 * @param int|array $terms The term_taxonomy_id of the terms. 3537 * @param string $taxonomy The context of the term. 3538 * @param bool $do_deferred Whether to flush the deferred term counts too. Default false. 3539 * @return bool If no terms will return false, and if successful will return true. 3540 */ 3541 function wp_update_term_count( $terms, $taxonomy, $do_deferred = false ) { 3542 static $_deferred = array(); 3543 3544 if ( $do_deferred ) { 3545 foreach ( (array) array_keys( $_deferred ) as $tax ) { 3546 wp_update_term_count_now( $_deferred[ $tax ], $tax ); 3547 unset( $_deferred[ $tax ] ); 3548 } 3549 } 3550 3551 if ( empty( $terms ) ) { 3552 return false; 3553 } 3554 3555 if ( ! is_array( $terms ) ) { 3556 $terms = array( $terms ); 3557 } 3558 3559 if ( wp_defer_term_counting() ) { 3560 if ( ! isset( $_deferred[ $taxonomy ] ) ) { 3561 $_deferred[ $taxonomy ] = array(); 3562 } 3563 $_deferred[ $taxonomy ] = array_unique( array_merge( $_deferred[ $taxonomy ], $terms ) ); 3564 return true; 3565 } 3566 3567 return wp_update_term_count_now( $terms, $taxonomy ); 3568 } 3569 3570 /** 3571 * Performs term count update immediately. 3572 * 3573 * @since 2.5.0 3574 * 3575 * @param array $terms The term_taxonomy_id of terms to update. 3576 * @param string $taxonomy The context of the term. 3577 * @return true Always true when complete. 3578 */ 3579 function wp_update_term_count_now( $terms, $taxonomy ) { 3580 $terms = array_map( 'intval', $terms ); 3581 3582 $taxonomy = get_taxonomy( $taxonomy ); 3583 if ( ! empty( $taxonomy->update_count_callback ) ) { 3584 call_user_func( $taxonomy->update_count_callback, $terms, $taxonomy ); 3585 } else { 3586 $object_types = (array) $taxonomy->object_type; 3587 foreach ( $object_types as &$object_type ) { 3588 if ( str_starts_with( $object_type, 'attachment:' ) ) { 3589 list( $object_type ) = explode( ':', $object_type ); 3590 } 3591 } 3592 3593 if ( array_filter( $object_types, 'post_type_exists' ) == $object_types ) { 3594 // Only post types are attached to this taxonomy. 3595 _update_post_term_count( $terms, $taxonomy ); 3596 } else { 3597 // Default count updater. 3598 _update_generic_term_count( $terms, $taxonomy ); 3599 } 3600 } 3601 3602 clean_term_cache( $terms, '', false ); 3603 3604 return true; 3605 } 3606 3607 // 3608 // Cache. 3609 // 3610 3611 /** 3612 * Removes the taxonomy relationship to terms from the cache. 3613 * 3614 * Will remove the entire taxonomy relationship containing term `$object_id`. The 3615 * term IDs have to exist within the taxonomy `$object_type` for the deletion to 3616 * take place. 3617 * 3618 * @since 2.3.0 3619 * 3620 * @global bool $_wp_suspend_cache_invalidation 3621 * 3622 * @see get_object_taxonomies() for more on $object_type. 3623 * 3624 * @param int|array $object_ids Single or list of term object ID(s). 3625 * @param array|string $object_type The taxonomy object type. 3626 */ 3627 function clean_object_term_cache( $object_ids, $object_type ) { 3628 global $_wp_suspend_cache_invalidation; 3629 3630 if ( ! empty( $_wp_suspend_cache_invalidation ) ) { 3631 return; 3632 } 3633 3634 if ( ! is_array( $object_ids ) ) { 3635 $object_ids = array( $object_ids ); 3636 } 3637 3638 $taxonomies = get_object_taxonomies( $object_type ); 3639 3640 foreach ( $taxonomies as $taxonomy ) { 3641 wp_cache_delete_multiple( $object_ids, "{$taxonomy}_relationships" ); 3642 } 3643 3644 wp_cache_set_terms_last_changed(); 3645 3646 /** 3647 * Fires after the object term cache has been cleaned. 3648 * 3649 * @since 2.5.0 3650 * 3651 * @param array $object_ids An array of object IDs. 3652 * @param string $object_type Object type. 3653 */ 3654 do_action( 'clean_object_term_cache', $object_ids, $object_type ); 3655 } 3656 3657 /** 3658 * Removes all of the term IDs from the cache. 3659 * 3660 * @since 2.3.0 3661 * 3662 * @global wpdb $wpdb WordPress database abstraction object. 3663 * @global bool $_wp_suspend_cache_invalidation 3664 * 3665 * @param int|int[] $ids Single or array of term IDs. 3666 * @param string $taxonomy Optional. Taxonomy slug. Can be empty, in which case the taxonomies of the passed 3667 * term IDs will be used. Default empty. 3668 * @param bool $clean_taxonomy Optional. Whether to clean taxonomy wide caches (true), or just individual 3669 * term object caches (false). Default true. 3670 */ 3671 function clean_term_cache( $ids, $taxonomy = '', $clean_taxonomy = true ) { 3672 global $wpdb, $_wp_suspend_cache_invalidation; 3673 3674 if ( ! empty( $_wp_suspend_cache_invalidation ) ) { 3675 return; 3676 } 3677 3678 if ( ! is_array( $ids ) ) { 3679 $ids = array( $ids ); 3680 } 3681 3682 $taxonomies = array(); 3683 // If no taxonomy, assume tt_ids. 3684 if ( empty( $taxonomy ) ) { 3685 $tt_ids = array_map( 'intval', $ids ); 3686 $tt_ids = implode( ', ', $tt_ids ); 3687 $terms = $wpdb->get_results( "SELECT term_id, taxonomy FROM $wpdb->term_taxonomy WHERE term_taxonomy_id IN ($tt_ids)" ); 3688 $ids = array(); 3689 3690 foreach ( (array) $terms as $term ) { 3691 $taxonomies[] = $term->taxonomy; 3692 $ids[] = $term->term_id; 3693 } 3694 wp_cache_delete_multiple( $ids, 'terms' ); 3695 $taxonomies = array_unique( $taxonomies ); 3696 } else { 3697 wp_cache_delete_multiple( $ids, 'terms' ); 3698 $taxonomies = array( $taxonomy ); 3699 } 3700 3701 foreach ( $taxonomies as $taxonomy ) { 3702 if ( $clean_taxonomy ) { 3703 clean_taxonomy_cache( $taxonomy ); 3704 } 3705 3706 /** 3707 * Fires once after each taxonomy's term cache has been cleaned. 3708 * 3709 * @since 2.5.0 3710 * @since 4.5.0 Added the `$clean_taxonomy` parameter. 3711 * 3712 * @param array $ids An array of term IDs. 3713 * @param string $taxonomy Taxonomy slug. 3714 * @param bool $clean_taxonomy Whether or not to clean taxonomy-wide caches 3715 */ 3716 do_action( 'clean_term_cache', $ids, $taxonomy, $clean_taxonomy ); 3717 } 3718 3719 wp_cache_set_terms_last_changed(); 3720 } 3721 3722 /** 3723 * Cleans the caches for a taxonomy. 3724 * 3725 * @since 4.9.0 3726 * 3727 * @param string $taxonomy Taxonomy slug. 3728 */ 3729 function clean_taxonomy_cache( $taxonomy ) { 3730 wp_cache_delete( 'all_ids', $taxonomy ); 3731 wp_cache_delete( 'get', $taxonomy ); 3732 wp_cache_set_terms_last_changed(); 3733 3734 // Regenerate cached hierarchy. 3735 delete_option( "{$taxonomy}_children" ); 3736 _get_term_hierarchy( $taxonomy ); 3737 3738 /** 3739 * Fires after a taxonomy's caches have been cleaned. 3740 * 3741 * @since 4.9.0 3742 * 3743 * @param string $taxonomy Taxonomy slug. 3744 */ 3745 do_action( 'clean_taxonomy_cache', $taxonomy ); 3746 } 3747 3748 /** 3749 * Retrieves the cached term objects for the given object ID. 3750 * 3751 * Upstream functions (like get_the_terms() and is_object_in_term()) are 3752 * responsible for populating the object-term relationship cache. The current 3753 * function only fetches relationship data that is already in the cache. 3754 * 3755 * @since 2.3.0 3756 * @since 4.7.0 Returns a `WP_Error` object if there's an error with 3757 * any of the matched terms. 3758 * 3759 * @param int $id Term object ID, for example a post, comment, or user ID. 3760 * @param string $taxonomy Taxonomy name. 3761 * @return bool|WP_Term[]|WP_Error Array of `WP_Term` objects, if cached. 3762 * False if cache is empty for `$taxonomy` and `$id`. 3763 * WP_Error if get_term() returns an error object for any term. 3764 */ 3765 function get_object_term_cache( $id, $taxonomy ) { 3766 $_term_ids = wp_cache_get( $id, "{$taxonomy}_relationships" ); 3767 3768 // We leave the priming of relationship caches to upstream functions. 3769 if ( false === $_term_ids ) { 3770 return false; 3771 } 3772 3773 // Backward compatibility for if a plugin is putting objects into the cache, rather than IDs. 3774 $term_ids = array(); 3775 foreach ( $_term_ids as $term_id ) { 3776 if ( is_numeric( $term_id ) ) { 3777 $term_ids[] = (int) $term_id; 3778 } elseif ( isset( $term_id->term_id ) ) { 3779 $term_ids[] = (int) $term_id->term_id; 3780 } 3781 } 3782 3783 // Fill the term objects. 3784 _prime_term_caches( $term_ids ); 3785 3786 $terms = array(); 3787 foreach ( $term_ids as $term_id ) { 3788 $term = get_term( $term_id, $taxonomy ); 3789 if ( is_wp_error( $term ) ) { 3790 return $term; 3791 } 3792 3793 $terms[] = $term; 3794 } 3795 3796 return $terms; 3797 } 3798 3799 /** 3800 * Updates the cache for the given term object ID(s). 3801 * 3802 * Note: Due to performance concerns, great care should be taken to only update 3803 * term caches when necessary. Processing time can increase exponentially depending 3804 * on both the number of passed term IDs and the number of taxonomies those terms 3805 * belong to. 3806 * 3807 * Caches will only be updated for terms not already cached. 3808 * 3809 * @since 2.3.0 3810 * 3811 * @param string|int[] $object_ids Comma-separated list or array of term object IDs. 3812 * @param string|string[] $object_type The taxonomy object type or array of the same. 3813 * @return void|false Void on success or if the `$object_ids` parameter is empty, 3814 * false if all of the terms in `$object_ids` are already cached. 3815 */ 3816 function update_object_term_cache( $object_ids, $object_type ) { 3817 if ( empty( $object_ids ) ) { 3818 return; 3819 } 3820 3821 if ( ! is_array( $object_ids ) ) { 3822 $object_ids = explode( ',', $object_ids ); 3823 } 3824 3825 $object_ids = array_map( 'intval', $object_ids ); 3826 $non_cached_ids = array(); 3827 3828 $taxonomies = get_object_taxonomies( $object_type ); 3829 3830 foreach ( $taxonomies as $taxonomy ) { 3831 $cache_values = wp_cache_get_multiple( (array) $object_ids, "{$taxonomy}_relationships" ); 3832 3833 foreach ( $cache_values as $id => $value ) { 3834 if ( false === $value ) { 3835 $non_cached_ids[] = $id; 3836 } 3837 } 3838 } 3839 3840 if ( empty( $non_cached_ids ) ) { 3841 return false; 3842 } 3843 3844 $non_cached_ids = array_unique( $non_cached_ids ); 3845 3846 $terms = wp_get_object_terms( 3847 $non_cached_ids, 3848 $taxonomies, 3849 array( 3850 'fields' => 'all_with_object_id', 3851 'orderby' => 'name', 3852 'update_term_meta_cache' => false, 3853 ) 3854 ); 3855 3856 $object_terms = array(); 3857 foreach ( (array) $terms as $term ) { 3858 $object_terms[ $term->object_id ][ $term->taxonomy ][] = $term->term_id; 3859 } 3860 3861 foreach ( $non_cached_ids as $id ) { 3862 foreach ( $taxonomies as $taxonomy ) { 3863 if ( ! isset( $object_terms[ $id ][ $taxonomy ] ) ) { 3864 if ( ! isset( $object_terms[ $id ] ) ) { 3865 $object_terms[ $id ] = array(); 3866 } 3867 $object_terms[ $id ][ $taxonomy ] = array(); 3868 } 3869 } 3870 } 3871 3872 $cache_values = array(); 3873 foreach ( $object_terms as $id => $value ) { 3874 foreach ( $value as $taxonomy => $terms ) { 3875 $cache_values[ $taxonomy ][ $id ] = $terms; 3876 } 3877 } 3878 foreach ( $cache_values as $taxonomy => $data ) { 3879 wp_cache_add_multiple( $data, "{$taxonomy}_relationships" ); 3880 } 3881 } 3882 3883 /** 3884 * Updates terms in cache. 3885 * 3886 * @since 2.3.0 3887 * 3888 * @param WP_Term[] $terms Array of term objects to change. 3889 * @param string $taxonomy Not used. 3890 */ 3891 function update_term_cache( $terms, $taxonomy = '' ) { 3892 $data = array(); 3893 foreach ( (array) $terms as $term ) { 3894 // Create a copy in case the array was passed by reference. 3895 $_term = clone $term; 3896 3897 // Object ID should not be cached. 3898 unset( $_term->object_id ); 3899 3900 $data[ $term->term_id ] = $_term; 3901 } 3902 wp_cache_add_multiple( $data, 'terms' ); 3903 } 3904 3905 // 3906 // Private. 3907 // 3908 3909 /** 3910 * Retrieves children of taxonomy as term IDs. 3911 * 3912 * @access private 3913 * @since 2.3.0 3914 * 3915 * @param string $taxonomy Taxonomy name. 3916 * @return array Empty if $taxonomy isn't hierarchical or returns children as term IDs. 3917 */ 3918 function _get_term_hierarchy( $taxonomy ) { 3919 if ( ! is_taxonomy_hierarchical( $taxonomy ) ) { 3920 return array(); 3921 } 3922 $children = get_option( "{$taxonomy}_children" ); 3923 3924 if ( is_array( $children ) ) { 3925 return $children; 3926 } 3927 $children = array(); 3928 $terms = get_terms( 3929 array( 3930 'taxonomy' => $taxonomy, 3931 'get' => 'all', 3932 'orderby' => 'id', 3933 'fields' => 'id=>parent', 3934 'update_term_meta_cache' => false, 3935 ) 3936 ); 3937 foreach ( $terms as $term_id => $parent ) { 3938 if ( $parent > 0 ) { 3939 $children[ $parent ][] = $term_id; 3940 } 3941 } 3942 update_option( "{$taxonomy}_children", $children ); 3943 3944 return $children; 3945 } 3946 3947 /** 3948 * Gets the subset of $terms that are descendants of $term_id. 3949 * 3950 * If `$terms` is an array of objects, then _get_term_children() returns an array of objects. 3951 * If `$terms` is an array of IDs, then _get_term_children() returns an array of IDs. 3952 * 3953 * @access private 3954 * @since 2.3.0 3955 * 3956 * @param int $term_id The ancestor term: all returned terms should be descendants of `$term_id`. 3957 * @param array $terms The set of terms - either an array of term objects or term IDs - from which those that 3958 * are descendants of $term_id will be chosen. 3959 * @param string $taxonomy The taxonomy which determines the hierarchy of the terms. 3960 * @param array $ancestors Optional. Term ancestors that have already been identified. Passed by reference, to keep 3961 * track of found terms when recursing the hierarchy. The array of located ancestors is used 3962 * to prevent infinite recursion loops. For performance, `term_ids` are used as array keys, 3963 * with 1 as value. Default empty array. 3964 * @return array|WP_Error The subset of $terms that are descendants of $term_id. 3965 */ 3966 function _get_term_children( $term_id, $terms, $taxonomy, &$ancestors = array() ) { 3967 $empty_array = array(); 3968 if ( empty( $terms ) ) { 3969 return $empty_array; 3970 } 3971 3972 $term_id = (int) $term_id; 3973 $term_list = array(); 3974 $has_children = _get_term_hierarchy( $taxonomy ); 3975 3976 if ( $term_id && ! isset( $has_children[ $term_id ] ) ) { 3977 return $empty_array; 3978 } 3979 3980 // Include the term itself in the ancestors array, so we can properly detect when a loop has occurred. 3981 if ( empty( $ancestors ) ) { 3982 $ancestors[ $term_id ] = 1; 3983 } 3984 3985 foreach ( (array) $terms as $term ) { 3986 $use_id = false; 3987 if ( ! is_object( $term ) ) { 3988 $term = get_term( $term, $taxonomy ); 3989 if ( is_wp_error( $term ) ) { 3990 return $term; 3991 } 3992 $use_id = true; 3993 } 3994 3995 // Don't recurse if we've already identified the term as a child - this indicates a loop. 3996 if ( isset( $ancestors[ $term->term_id ] ) ) { 3997 continue; 3998 } 3999 4000 if ( (int) $term->parent === $term_id ) { 4001 if ( $use_id ) { 4002 $term_list[] = $term->term_id; 4003 } else { 4004 $term_list[] = $term; 4005 } 4006 4007 if ( ! isset( $has_children[ $term->term_id ] ) ) { 4008 continue; 4009 } 4010 4011 $ancestors[ $term->term_id ] = 1; 4012 4013 $children = _get_term_children( $term->term_id, $terms, $taxonomy, $ancestors ); 4014 if ( $children ) { 4015 $term_list = array_merge( $term_list, $children ); 4016 } 4017 } 4018 } 4019 4020 return $term_list; 4021 } 4022 4023 /** 4024 * Adds count of children to parent count. 4025 * 4026 * Recalculates term counts by including items from child terms. Assumes all 4027 * relevant children are already in the $terms argument. 4028 * 4029 * @access private 4030 * @since 2.3.0 4031 * 4032 * @global wpdb $wpdb WordPress database abstraction object. 4033 * 4034 * @param object[]|WP_Term[] $terms List of term objects (passed by reference). 4035 * @param string $taxonomy Term context. 4036 */ 4037 function _pad_term_counts( &$terms, $taxonomy ) { 4038 global $wpdb; 4039 4040 // This function only works for hierarchical taxonomies like post categories. 4041 if ( ! is_taxonomy_hierarchical( $taxonomy ) ) { 4042 return; 4043 } 4044 4045 $term_hier = _get_term_hierarchy( $taxonomy ); 4046 4047 if ( empty( $term_hier ) ) { 4048 return; 4049 } 4050 4051 $term_items = array(); 4052 $terms_by_id = array(); 4053 $term_ids = array(); 4054 4055 foreach ( (array) $terms as $key => $term ) { 4056 $terms_by_id[ $term->term_id ] = & $terms[ $key ]; 4057 $term_ids[ $term->term_taxonomy_id ] = $term->term_id; 4058 } 4059 4060 // Get the object and term IDs and stick them in a lookup table. 4061 $tax_obj = get_taxonomy( $taxonomy ); 4062 $object_types = esc_sql( $tax_obj->object_type ); 4063 $results = $wpdb->get_results( "SELECT object_id, term_taxonomy_id FROM $wpdb->term_relationships INNER JOIN $wpdb->posts ON object_id = ID WHERE term_taxonomy_id IN (" . implode( ',', array_keys( $term_ids ) ) . ") AND post_type IN ('" . implode( "', '", $object_types ) . "') AND post_status = 'publish'" ); 4064 4065 foreach ( $results as $row ) { 4066 $id = $term_ids[ $row->term_taxonomy_id ]; 4067 4068 $term_items[ $id ][ $row->object_id ] = isset( $term_items[ $id ][ $row->object_id ] ) ? ++$term_items[ $id ][ $row->object_id ] : 1; 4069 } 4070 4071 // Touch every ancestor's lookup row for each post in each term. 4072 foreach ( $term_ids as $term_id ) { 4073 $child = $term_id; 4074 $ancestors = array(); 4075 while ( ! empty( $terms_by_id[ $child ] ) && $parent = $terms_by_id[ $child ]->parent ) { 4076 $ancestors[] = $child; 4077 4078 if ( ! empty( $term_items[ $term_id ] ) ) { 4079 foreach ( $term_items[ $term_id ] as $item_id => $touches ) { 4080 $term_items[ $parent ][ $item_id ] = isset( $term_items[ $parent ][ $item_id ] ) ? ++$term_items[ $parent ][ $item_id ] : 1; 4081 } 4082 } 4083 4084 $child = $parent; 4085 4086 if ( in_array( $parent, $ancestors, true ) ) { 4087 break; 4088 } 4089 } 4090 } 4091 4092 // Transfer the touched cells. 4093 foreach ( (array) $term_items as $id => $items ) { 4094 if ( isset( $terms_by_id[ $id ] ) ) { 4095 $terms_by_id[ $id ]->count = count( $items ); 4096 } 4097 } 4098 } 4099 4100 /** 4101 * Adds any terms from the given IDs to the cache that do not already exist in cache. 4102 * 4103 * @since 4.6.0 4104 * @since 6.1.0 This function is no longer marked as "private". 4105 * @since 6.3.0 Use wp_lazyload_term_meta() for lazy-loading of term meta. 4106 * 4107 * @global wpdb $wpdb WordPress database abstraction object. 4108 * 4109 * @param array $term_ids Array of term IDs. 4110 * @param bool $update_meta_cache Optional. Whether to update the meta cache. Default true. 4111 */ 4112 function _prime_term_caches( $term_ids, $update_meta_cache = true ) { 4113 global $wpdb; 4114 4115 $non_cached_ids = _get_non_cached_ids( $term_ids, 'terms' ); 4116 if ( ! empty( $non_cached_ids ) ) { 4117 $fresh_terms = $wpdb->get_results( sprintf( "SELECT t.*, tt.* FROM $wpdb->terms AS t INNER JOIN $wpdb->term_taxonomy AS tt ON t.term_id = tt.term_id WHERE t.term_id IN (%s)", implode( ',', array_map( 'intval', $non_cached_ids ) ) ) ); 4118 4119 update_term_cache( $fresh_terms ); 4120 } 4121 4122 if ( $update_meta_cache ) { 4123 wp_lazyload_term_meta( $term_ids ); 4124 } 4125 } 4126 4127 // 4128 // Default callbacks. 4129 // 4130 4131 /** 4132 * Updates term count based on object types of the current taxonomy. 4133 * 4134 * Private function for the default callback for post_tag and category 4135 * taxonomies. 4136 * 4137 * @access private 4138 * @since 2.3.0 4139 * 4140 * @global wpdb $wpdb WordPress database abstraction object. 4141 * 4142 * @param int[] $terms List of term taxonomy IDs. 4143 * @param WP_Taxonomy $taxonomy Current taxonomy object of terms. 4144 */ 4145 function _update_post_term_count( $terms, $taxonomy ) { 4146 global $wpdb; 4147 4148 $object_types = (array) $taxonomy->object_type; 4149 4150 foreach ( $object_types as &$object_type ) { 4151 list( $object_type ) = explode( ':', $object_type ); 4152 } 4153 4154 $object_types = array_unique( $object_types ); 4155 4156 $check_attachments = array_search( 'attachment', $object_types, true ); 4157 if ( false !== $check_attachments ) { 4158 unset( $object_types[ $check_attachments ] ); 4159 $check_attachments = true; 4160 } 4161 4162 if ( $object_types ) { 4163 $object_types = esc_sql( array_filter( $object_types, 'post_type_exists' ) ); 4164 } 4165 4166 $post_statuses = array( 'publish' ); 4167 4168 /** 4169 * Filters the post statuses for updating the term count. 4170 * 4171 * @since 5.7.0 4172 * 4173 * @param string[] $post_statuses List of post statuses to include in the count. Default is 'publish'. 4174 * @param WP_Taxonomy $taxonomy Current taxonomy object. 4175 */ 4176 $post_statuses = esc_sql( apply_filters( 'update_post_term_count_statuses', $post_statuses, $taxonomy ) ); 4177 4178 foreach ( (array) $terms as $term ) { 4179 $count = 0; 4180 4181 // Attachments can be 'inherit' status, we need to base count off the parent's status if so. 4182 if ( $check_attachments ) { 4183 // phpcs:ignore WordPress.DB.PreparedSQLPlaceholders.QuotedDynamicPlaceholderGeneration 4184 $count += (int) $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->term_relationships, $wpdb->posts p1 WHERE p1.ID = $wpdb->term_relationships.object_id AND ( post_status IN ('" . implode( "', '", $post_statuses ) . "') OR ( post_status = 'inherit' AND post_parent > 0 AND ( SELECT post_status FROM $wpdb->posts WHERE ID = p1.post_parent ) IN ('" . implode( "', '", $post_statuses ) . "') ) ) AND post_type = 'attachment' AND term_taxonomy_id = %d", $term ) ); 4185 } 4186 4187 if ( $object_types ) { 4188 // phpcs:ignore WordPress.DB.PreparedSQLPlaceholders.QuotedDynamicPlaceholderGeneration 4189 $count += (int) $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->term_relationships, $wpdb->posts WHERE $wpdb->posts.ID = $wpdb->term_relationships.object_id AND post_status IN ('" . implode( "', '", $post_statuses ) . "') AND post_type IN ('" . implode( "', '", $object_types ) . "') AND term_taxonomy_id = %d", $term ) ); 4190 } 4191 4192 /** This action is documented in wp-includes/taxonomy.php */ 4193 do_action( 'edit_term_taxonomy', $term, $taxonomy->name ); 4194 $wpdb->update( $wpdb->term_taxonomy, compact( 'count' ), array( 'term_taxonomy_id' => $term ) ); 4195 4196 /** This action is documented in wp-includes/taxonomy.php */ 4197 do_action( 'edited_term_taxonomy', $term, $taxonomy->name ); 4198 } 4199 } 4200 4201 /** 4202 * Updates term count based on number of objects. 4203 * 4204 * Default callback for the 'link_category' taxonomy. 4205 * 4206 * @since 3.3.0 4207 * 4208 * @global wpdb $wpdb WordPress database abstraction object. 4209 * 4210 * @param int[] $terms List of term taxonomy IDs. 4211 * @param WP_Taxonomy $taxonomy Current taxonomy object of terms. 4212 */ 4213 function _update_generic_term_count( $terms, $taxonomy ) { 4214 global $wpdb; 4215 4216 foreach ( (array) $terms as $term ) { 4217 $count = $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->term_relationships WHERE term_taxonomy_id = %d", $term ) ); 4218 4219 /** This action is documented in wp-includes/taxonomy.php */ 4220 do_action( 'edit_term_taxonomy', $term, $taxonomy->name ); 4221 $wpdb->update( $wpdb->term_taxonomy, compact( 'count' ), array( 'term_taxonomy_id' => $term ) ); 4222 4223 /** This action is documented in wp-includes/taxonomy.php */ 4224 do_action( 'edited_term_taxonomy', $term, $taxonomy->name ); 4225 } 4226 } 4227 4228 /** 4229 * Creates a new term for a term_taxonomy item that currently shares its term 4230 * with another term_taxonomy. 4231 * 4232 * @ignore 4233 * @since 4.2.0 4234 * @since 4.3.0 Introduced `$record` parameter. Also, `$term_id` and 4235 * `$term_taxonomy_id` can now accept objects. 4236 * 4237 * @global wpdb $wpdb WordPress database abstraction object. 4238 * 4239 * @param int|object $term_id ID of the shared term, or the shared term object. 4240 * @param int|object $term_taxonomy_id ID of the term_taxonomy item to receive a new term, or the term_taxonomy object 4241 * (corresponding to a row from the term_taxonomy table). 4242 * @param bool $record Whether to record data about the split term in the options table. The recording 4243 * process has the potential to be resource-intensive, so during batch operations 4244 * it can be beneficial to skip inline recording and do it just once, after the 4245 * batch is processed. Only set this to `false` if you know what you are doing. 4246 * Default: true. 4247 * @return int|WP_Error When the current term does not need to be split (or cannot be split on the current 4248 * database schema), `$term_id` is returned. When the term is successfully split, the 4249 * new term_id is returned. A WP_Error is returned for miscellaneous errors. 4250 */ 4251 function _split_shared_term( $term_id, $term_taxonomy_id, $record = true ) { 4252 global $wpdb; 4253 4254 if ( is_object( $term_id ) ) { 4255 $shared_term = $term_id; 4256 $term_id = (int) $shared_term->term_id; 4257 } 4258 4259 if ( is_object( $term_taxonomy_id ) ) { 4260 $term_taxonomy = $term_taxonomy_id; 4261 $term_taxonomy_id = (int) $term_taxonomy->term_taxonomy_id; 4262 } 4263 4264 // If there are no shared term_taxonomy rows, there's nothing to do here. 4265 $shared_tt_count = (int) $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->term_taxonomy tt WHERE tt.term_id = %d AND tt.term_taxonomy_id != %d", $term_id, $term_taxonomy_id ) ); 4266 4267 if ( ! $shared_tt_count ) { 4268 return $term_id; 4269 } 4270 4271 /* 4272 * Verify that the term_taxonomy_id passed to the function is actually associated with the term_id. 4273 * If there's a mismatch, it may mean that the term is already split. Return the actual term_id from the db. 4274 */ 4275 $check_term_id = (int) $wpdb->get_var( $wpdb->prepare( "SELECT term_id FROM $wpdb->term_taxonomy WHERE term_taxonomy_id = %d", $term_taxonomy_id ) ); 4276 if ( $check_term_id !== $term_id ) { 4277 return $check_term_id; 4278 } 4279 4280 // Pull up data about the currently shared slug, which we'll use to populate the new one. 4281 if ( empty( $shared_term ) ) { 4282 $shared_term = $wpdb->get_row( $wpdb->prepare( "SELECT t.* FROM $wpdb->terms t WHERE t.term_id = %d", $term_id ) ); 4283 } 4284 4285 $new_term_data = array( 4286 'name' => $shared_term->name, 4287 'slug' => $shared_term->slug, 4288 'term_group' => $shared_term->term_group, 4289 ); 4290 4291 if ( false === $wpdb->insert( $wpdb->terms, $new_term_data ) ) { 4292 return new WP_Error( 'db_insert_error', __( 'Could not split shared term.' ), $wpdb->last_error ); 4293 } 4294 4295 $new_term_id = (int) $wpdb->insert_id; 4296 4297 // Update the existing term_taxonomy to point to the newly created term. 4298 $wpdb->update( 4299 $wpdb->term_taxonomy, 4300 array( 'term_id' => $new_term_id ), 4301 array( 'term_taxonomy_id' => $term_taxonomy_id ) 4302 ); 4303 4304 // Reassign child terms to the new parent. 4305 if ( empty( $term_taxonomy ) ) { 4306 $term_taxonomy = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->term_taxonomy WHERE term_taxonomy_id = %d", $term_taxonomy_id ) ); 4307 } 4308 4309 $children_tt_ids = $wpdb->get_col( $wpdb->prepare( "SELECT term_taxonomy_id FROM $wpdb->term_taxonomy WHERE parent = %d AND taxonomy = %s", $term_id, $term_taxonomy->taxonomy ) ); 4310 if ( ! empty( $children_tt_ids ) ) { 4311 foreach ( $children_tt_ids as $child_tt_id ) { 4312 $wpdb->update( 4313 $wpdb->term_taxonomy, 4314 array( 'parent' => $new_term_id ), 4315 array( 'term_taxonomy_id' => $child_tt_id ) 4316 ); 4317 clean_term_cache( (int) $child_tt_id, '', false ); 4318 } 4319 } else { 4320 // If the term has no children, we must force its taxonomy cache to be rebuilt separately. 4321 clean_term_cache( $new_term_id, $term_taxonomy->taxonomy, false ); 4322 } 4323 4324 clean_term_cache( $term_id, $term_taxonomy->taxonomy, false ); 4325 4326 /* 4327 * Taxonomy cache clearing is delayed to avoid race conditions that may occur when 4328 * regenerating the taxonomy's hierarchy tree. 4329 */ 4330 $taxonomies_to_clean = array( $term_taxonomy->taxonomy ); 4331 4332 // Clean the cache for term taxonomies formerly shared with the current term. 4333 $shared_term_taxonomies = $wpdb->get_col( $wpdb->prepare( "SELECT taxonomy FROM $wpdb->term_taxonomy WHERE term_id = %d", $term_id ) ); 4334 $taxonomies_to_clean = array_merge( $taxonomies_to_clean, $shared_term_taxonomies ); 4335 4336 foreach ( $taxonomies_to_clean as $taxonomy_to_clean ) { 4337 clean_taxonomy_cache( $taxonomy_to_clean ); 4338 } 4339 4340 // Keep a record of term_ids that have been split, keyed by old term_id. See wp_get_split_term(). 4341 if ( $record ) { 4342 $split_term_data = get_option( '_split_terms', array() ); 4343 if ( ! isset( $split_term_data[ $term_id ] ) ) { 4344 $split_term_data[ $term_id ] = array(); 4345 } 4346 4347 $split_term_data[ $term_id ][ $term_taxonomy->taxonomy ] = $new_term_id; 4348 update_option( '_split_terms', $split_term_data ); 4349 } 4350 4351 // If we've just split the final shared term, set the "finished" flag. 4352 $shared_terms_exist = $wpdb->get_results( 4353 "SELECT tt.term_id, t.*, count(*) as term_tt_count FROM {$wpdb->term_taxonomy} tt 4354 LEFT JOIN {$wpdb->terms} t ON t.term_id = tt.term_id 4355 GROUP BY t.term_id 4356 HAVING term_tt_count > 1 4357 LIMIT 1" 4358 ); 4359 if ( ! $shared_terms_exist ) { 4360 update_option( 'finished_splitting_shared_terms', true ); 4361 } 4362 4363 /** 4364 * Fires after a previously shared taxonomy term is split into two separate terms. 4365 * 4366 * @since 4.2.0 4367 * 4368 * @param int $term_id ID of the formerly shared term. 4369 * @param int $new_term_id ID of the new term created for the $term_taxonomy_id. 4370 * @param int $term_taxonomy_id ID for the term_taxonomy row affected by the split. 4371 * @param string $taxonomy Taxonomy for the split term. 4372 */ 4373 do_action( 'split_shared_term', $term_id, $new_term_id, $term_taxonomy_id, $term_taxonomy->taxonomy ); 4374 4375 return $new_term_id; 4376 } 4377 4378 /** 4379 * Splits a batch of shared taxonomy terms. 4380 * 4381 * @since 4.3.0 4382 * 4383 * @global wpdb $wpdb WordPress database abstraction object. 4384 */ 4385 function _wp_batch_split_terms() { 4386 global $wpdb; 4387 4388 $lock_name = 'term_split.lock'; 4389 4390 // Try to lock. 4391 $lock_result = $wpdb->query( $wpdb->prepare( "INSERT IGNORE INTO `$wpdb->options` ( `option_name`, `option_value`, `autoload` ) VALUES (%s, %s, 'off') /* LOCK */", $lock_name, time() ) ); 4392 4393 if ( ! $lock_result ) { 4394 $lock_result = get_option( $lock_name ); 4395 4396 // Bail if we were unable to create a lock, or if the existing lock is still valid. 4397 if ( ! $lock_result || ( $lock_result > ( time() - HOUR_IN_SECONDS ) ) ) { 4398 wp_schedule_single_event( time() + ( 5 * MINUTE_IN_SECONDS ), 'wp_split_shared_term_batch' ); 4399 return; 4400 } 4401 } 4402 4403 // Update the lock, as by this point we've definitely got a lock, just need to fire the actions. 4404 update_option( $lock_name, time() ); 4405 4406 // Get a list of shared terms (those with more than one associated row in term_taxonomy). 4407 $shared_terms = $wpdb->get_results( 4408 "SELECT tt.term_id, t.*, count(*) as term_tt_count FROM {$wpdb->term_taxonomy} tt 4409 LEFT JOIN {$wpdb->terms} t ON t.term_id = tt.term_id 4410 GROUP BY t.term_id 4411 HAVING term_tt_count > 1 4412 LIMIT 10" 4413 ); 4414 4415 // No more terms, we're done here. 4416 if ( ! $shared_terms ) { 4417 update_option( 'finished_splitting_shared_terms', true ); 4418 delete_option( $lock_name ); 4419 return; 4420 } 4421 4422 // Shared terms found? We'll need to run this script again. 4423 wp_schedule_single_event( time() + ( 2 * MINUTE_IN_SECONDS ), 'wp_split_shared_term_batch' ); 4424 4425 // Rekey shared term array for faster lookups. 4426 $_shared_terms = array(); 4427 foreach ( $shared_terms as $shared_term ) { 4428 $term_id = (int) $shared_term->term_id; 4429 $_shared_terms[ $term_id ] = $shared_term; 4430 } 4431 $shared_terms = $_shared_terms; 4432 4433 // Get term taxonomy data for all shared terms. 4434 $shared_term_ids = implode( ',', array_keys( $shared_terms ) ); 4435 $shared_tts = $wpdb->get_results( "SELECT * FROM {$wpdb->term_taxonomy} WHERE `term_id` IN ({$shared_term_ids})" ); 4436 4437 // Split term data recording is slow, so we do it just once, outside the loop. 4438 $split_term_data = get_option( '_split_terms', array() ); 4439 $skipped_first_term = array(); 4440 $taxonomies = array(); 4441 foreach ( $shared_tts as $shared_tt ) { 4442 $term_id = (int) $shared_tt->term_id; 4443 4444 // Don't split the first tt belonging to a given term_id. 4445 if ( ! isset( $skipped_first_term[ $term_id ] ) ) { 4446 $skipped_first_term[ $term_id ] = 1; 4447 continue; 4448 } 4449 4450 if ( ! isset( $split_term_data[ $term_id ] ) ) { 4451 $split_term_data[ $term_id ] = array(); 4452 } 4453 4454 // Keep track of taxonomies whose hierarchies need flushing. 4455 if ( ! isset( $taxonomies[ $shared_tt->taxonomy ] ) ) { 4456 $taxonomies[ $shared_tt->taxonomy ] = 1; 4457 } 4458 4459 // Split the term. 4460 $split_term_data[ $term_id ][ $shared_tt->taxonomy ] = _split_shared_term( $shared_terms[ $term_id ], $shared_tt, false ); 4461 } 4462 4463 // Rebuild the cached hierarchy for each affected taxonomy. 4464 foreach ( array_keys( $taxonomies ) as $tax ) { 4465 delete_option( "{$tax}_children" ); 4466 _get_term_hierarchy( $tax ); 4467 } 4468 4469 update_option( '_split_terms', $split_term_data ); 4470 4471 delete_option( $lock_name ); 4472 } 4473 4474 /** 4475 * In order to avoid the _wp_batch_split_terms() job being accidentally removed, 4476 * checks that it's still scheduled while we haven't finished splitting terms. 4477 * 4478 * @ignore 4479 * @since 4.3.0 4480 */ 4481 function _wp_check_for_scheduled_split_terms() { 4482 if ( ! get_option( 'finished_splitting_shared_terms' ) && ! wp_next_scheduled( 'wp_split_shared_term_batch' ) ) { 4483 wp_schedule_single_event( time() + MINUTE_IN_SECONDS, 'wp_split_shared_term_batch' ); 4484 } 4485 } 4486 4487 /** 4488 * Checks default categories when a term gets split to see if any of them need to be updated. 4489 * 4490 * @ignore 4491 * @since 4.2.0 4492 * 4493 * @param int $term_id ID of the formerly shared term. 4494 * @param int $new_term_id ID of the new term created for the $term_taxonomy_id. 4495 * @param int $term_taxonomy_id ID for the term_taxonomy row affected by the split. 4496 * @param string $taxonomy Taxonomy for the split term. 4497 */ 4498 function _wp_check_split_default_terms( $term_id, $new_term_id, $term_taxonomy_id, $taxonomy ) { 4499 if ( 'category' !== $taxonomy ) { 4500 return; 4501 } 4502 4503 foreach ( array( 'default_category', 'default_link_category', 'default_email_category' ) as $option ) { 4504 if ( (int) get_option( $option, -1 ) === $term_id ) { 4505 update_option( $option, $new_term_id ); 4506 } 4507 } 4508 } 4509 4510 /** 4511 * Checks menu items when a term gets split to see if any of them need to be updated. 4512 * 4513 * @ignore 4514 * @since 4.2.0 4515 * 4516 * @global wpdb $wpdb WordPress database abstraction object. 4517 * 4518 * @param int $term_id ID of the formerly shared term. 4519 * @param int $new_term_id ID of the new term created for the $term_taxonomy_id. 4520 * @param int $term_taxonomy_id ID for the term_taxonomy row affected by the split. 4521 * @param string $taxonomy Taxonomy for the split term. 4522 */ 4523 function _wp_check_split_terms_in_menus( $term_id, $new_term_id, $term_taxonomy_id, $taxonomy ) { 4524 global $wpdb; 4525 $post_ids = $wpdb->get_col( 4526 $wpdb->prepare( 4527 "SELECT m1.post_id 4528 FROM {$wpdb->postmeta} AS m1 4529 INNER JOIN {$wpdb->postmeta} AS m2 ON ( m2.post_id = m1.post_id ) 4530 INNER JOIN {$wpdb->postmeta} AS m3 ON ( m3.post_id = m1.post_id ) 4531 WHERE ( m1.meta_key = '_menu_item_type' AND m1.meta_value = 'taxonomy' ) 4532 AND ( m2.meta_key = '_menu_item_object' AND m2.meta_value = %s ) 4533 AND ( m3.meta_key = '_menu_item_object_id' AND m3.meta_value = %d )", 4534 $taxonomy, 4535 $term_id 4536 ) 4537 ); 4538 4539 if ( $post_ids ) { 4540 foreach ( $post_ids as $post_id ) { 4541 update_post_meta( $post_id, '_menu_item_object_id', $new_term_id, $term_id ); 4542 } 4543 } 4544 } 4545 4546 /** 4547 * If the term being split is a nav_menu, changes associations. 4548 * 4549 * @ignore 4550 * @since 4.3.0 4551 * 4552 * @param int $term_id ID of the formerly shared term. 4553 * @param int $new_term_id ID of the new term created for the $term_taxonomy_id. 4554 * @param int $term_taxonomy_id ID for the term_taxonomy row affected by the split. 4555 * @param string $taxonomy Taxonomy for the split term. 4556 */ 4557 function _wp_check_split_nav_menu_terms( $term_id, $new_term_id, $term_taxonomy_id, $taxonomy ) { 4558 if ( 'nav_menu' !== $taxonomy ) { 4559 return; 4560 } 4561 4562 // Update menu locations. 4563 $locations = get_nav_menu_locations(); 4564 foreach ( $locations as $location => $menu_id ) { 4565 if ( $term_id === $menu_id ) { 4566 $locations[ $location ] = $new_term_id; 4567 } 4568 } 4569 set_theme_mod( 'nav_menu_locations', $locations ); 4570 } 4571 4572 /** 4573 * Gets data about terms that previously shared a single term_id, but have since been split. 4574 * 4575 * @since 4.2.0 4576 * 4577 * @param int $old_term_id Term ID. This is the old, pre-split term ID. 4578 * @return array Array of new term IDs, keyed by taxonomy. 4579 */ 4580 function wp_get_split_terms( $old_term_id ) { 4581 $split_terms = get_option( '_split_terms', array() ); 4582 4583 $terms = array(); 4584 if ( isset( $split_terms[ $old_term_id ] ) ) { 4585 $terms = $split_terms[ $old_term_id ]; 4586 } 4587 4588 return $terms; 4589 } 4590 4591 /** 4592 * Gets the new term ID corresponding to a previously split term. 4593 * 4594 * @since 4.2.0 4595 * 4596 * @param int $old_term_id Term ID. This is the old, pre-split term ID. 4597 * @param string $taxonomy Taxonomy that the term belongs to. 4598 * @return int|false If a previously split term is found corresponding to the old term_id and taxonomy, 4599 * the new term_id will be returned. If no previously split term is found matching 4600 * the parameters, returns false. 4601 */ 4602 function wp_get_split_term( $old_term_id, $taxonomy ) { 4603 $split_terms = wp_get_split_terms( $old_term_id ); 4604 4605 $term_id = false; 4606 if ( isset( $split_terms[ $taxonomy ] ) ) { 4607 $term_id = (int) $split_terms[ $taxonomy ]; 4608 } 4609 4610 return $term_id; 4611 } 4612 4613 /** 4614 * Determines whether a term is shared between multiple taxonomies. 4615 * 4616 * Shared taxonomy terms began to be split in 4.3, but failed cron tasks or 4617 * other delays in upgrade routines may cause shared terms to remain. 4618 * 4619 * @since 4.4.0 4620 * 4621 * @global wpdb $wpdb WordPress database abstraction object. 4622 * 4623 * @param int $term_id Term ID. 4624 * @return bool Returns false if a term is not shared between multiple taxonomies or 4625 * if splitting shared taxonomy terms is finished. 4626 */ 4627 function wp_term_is_shared( $term_id ) { 4628 global $wpdb; 4629 4630 if ( get_option( 'finished_splitting_shared_terms' ) ) { 4631 return false; 4632 } 4633 4634 $tt_count = $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->term_taxonomy WHERE term_id = %d", $term_id ) ); 4635 4636 return $tt_count > 1; 4637 } 4638 4639 /** 4640 * Generates a permalink for a taxonomy term archive. 4641 * 4642 * @since 2.5.0 4643 * 4644 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 4645 * 4646 * @param WP_Term|int|string $term The term object, ID, or slug whose link will be retrieved. 4647 * @param string $taxonomy Optional. Taxonomy. Default empty. 4648 * @return string|WP_Error URL of the taxonomy term archive on success, WP_Error if term does not exist. 4649 */ 4650 function get_term_link( $term, $taxonomy = '' ) { 4651 global $wp_rewrite; 4652 4653 if ( ! is_object( $term ) ) { 4654 if ( is_int( $term ) ) { 4655 $term = get_term( $term, $taxonomy ); 4656 } else { 4657 $term = get_term_by( 'slug', $term, $taxonomy ); 4658 } 4659 } 4660 4661 if ( ! is_object( $term ) ) { 4662 $term = new WP_Error( 'invalid_term', __( 'Empty Term.' ) ); 4663 } 4664 4665 if ( is_wp_error( $term ) ) { 4666 return $term; 4667 } 4668 4669 $taxonomy = $term->taxonomy; 4670 4671 $termlink = $wp_rewrite->get_extra_permastruct( $taxonomy ); 4672 4673 /** 4674 * Filters the permalink structure for a term before token replacement occurs. 4675 * 4676 * @since 4.9.0 4677 * 4678 * @param string $termlink The permalink structure for the term's taxonomy. 4679 * @param WP_Term $term The term object. 4680 */ 4681 $termlink = apply_filters( 'pre_term_link', $termlink, $term ); 4682 4683 $slug = $term->slug; 4684 $t = get_taxonomy( $taxonomy ); 4685 4686 if ( empty( $termlink ) ) { 4687 if ( 'category' === $taxonomy ) { 4688 $termlink = '?cat=' . $term->term_id; 4689 } elseif ( $t->query_var ) { 4690 $termlink = "?$t->query_var=$slug"; 4691 } else { 4692 $termlink = "?taxonomy=$taxonomy&term=$slug"; 4693 } 4694 $termlink = home_url( $termlink ); 4695 } else { 4696 if ( ! empty( $t->rewrite['hierarchical'] ) ) { 4697 $hierarchical_slugs = array(); 4698 $ancestors = get_ancestors( $term->term_id, $taxonomy, 'taxonomy' ); 4699 foreach ( (array) $ancestors as $ancestor ) { 4700 $ancestor_term = get_term( $ancestor, $taxonomy ); 4701 $hierarchical_slugs[] = $ancestor_term->slug; 4702 } 4703 $hierarchical_slugs = array_reverse( $hierarchical_slugs ); 4704 $hierarchical_slugs[] = $slug; 4705 $termlink = str_replace( "%$taxonomy%", implode( '/', $hierarchical_slugs ), $termlink ); 4706 } else { 4707 $termlink = str_replace( "%$taxonomy%", $slug, $termlink ); 4708 } 4709 $termlink = home_url( user_trailingslashit( $termlink, 'category' ) ); 4710 } 4711 4712 // Back compat filters. 4713 if ( 'post_tag' === $taxonomy ) { 4714 4715 /** 4716 * Filters the tag link. 4717 * 4718 * @since 2.3.0 4719 * @since 2.5.0 Deprecated in favor of {@see 'term_link'} filter. 4720 * @since 5.4.1 Restored (un-deprecated). 4721 * 4722 * @param string $termlink Tag link URL. 4723 * @param int $term_id Term ID. 4724 */ 4725 $termlink = apply_filters( 'tag_link', $termlink, $term->term_id ); 4726 } elseif ( 'category' === $taxonomy ) { 4727 4728 /** 4729 * Filters the category link. 4730 * 4731 * @since 1.5.0 4732 * @since 2.5.0 Deprecated in favor of {@see 'term_link'} filter. 4733 * @since 5.4.1 Restored (un-deprecated). 4734 * 4735 * @param string $termlink Category link URL. 4736 * @param int $term_id Term ID. 4737 */ 4738 $termlink = apply_filters( 'category_link', $termlink, $term->term_id ); 4739 } 4740 4741 /** 4742 * Filters the term link. 4743 * 4744 * @since 2.5.0 4745 * 4746 * @param string $termlink Term link URL. 4747 * @param WP_Term $term Term object. 4748 * @param string $taxonomy Taxonomy slug. 4749 */ 4750 return apply_filters( 'term_link', $termlink, $term, $taxonomy ); 4751 } 4752 4753 /** 4754 * Displays the taxonomies of a post with available options. 4755 * 4756 * This function can be used within the loop to display the taxonomies for a 4757 * post without specifying the Post ID. You can also use it outside the Loop to 4758 * display the taxonomies for a specific post. 4759 * 4760 * @since 2.5.0 4761 * 4762 * @param array $args { 4763 * Arguments about which post to use and how to format the output. Shares all of the arguments 4764 * supported by get_the_taxonomies(), in addition to the following. 4765 * 4766 * @type int|WP_Post $post Post ID or object to get taxonomies of. Default current post. 4767 * @type string $before Displays before the taxonomies. Default empty string. 4768 * @type string $sep Separates each taxonomy. Default is a space. 4769 * @type string $after Displays after the taxonomies. Default empty string. 4770 * } 4771 */ 4772 function the_taxonomies( $args = array() ) { 4773 $defaults = array( 4774 'post' => 0, 4775 'before' => '', 4776 'sep' => ' ', 4777 'after' => '', 4778 ); 4779 4780 $parsed_args = wp_parse_args( $args, $defaults ); 4781 4782 echo $parsed_args['before'] . implode( $parsed_args['sep'], get_the_taxonomies( $parsed_args['post'], $parsed_args ) ) . $parsed_args['after']; 4783 } 4784 4785 /** 4786 * Retrieves all taxonomies associated with a post. 4787 * 4788 * This function can be used within the loop. It will also return an array of 4789 * the taxonomies with links to the taxonomy and name. 4790 * 4791 * @since 2.5.0 4792 * 4793 * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post. 4794 * @param array $args { 4795 * Optional. Arguments about how to format the list of taxonomies. Default empty array. 4796 * 4797 * @type string $template Template for displaying a taxonomy label and list of terms. 4798 * Default is "Label: Terms." 4799 * @type string $term_template Template for displaying a single term in the list. Default is the term name 4800 * linked to its archive. 4801 * } 4802 * @return string[] List of taxonomies. 4803 */ 4804 function get_the_taxonomies( $post = 0, $args = array() ) { 4805 $post = get_post( $post ); 4806 4807 $args = wp_parse_args( 4808 $args, 4809 array( 4810 /* translators: %s: Taxonomy label, %l: List of terms formatted as per $term_template. */ 4811 'template' => __( '%s: %l.' ), 4812 'term_template' => '<a href="%1$s">%2$s</a>', 4813 ) 4814 ); 4815 4816 $taxonomies = array(); 4817 4818 if ( ! $post ) { 4819 return $taxonomies; 4820 } 4821 4822 foreach ( get_object_taxonomies( $post ) as $taxonomy ) { 4823 $t = (array) get_taxonomy( $taxonomy ); 4824 if ( empty( $t['label'] ) ) { 4825 $t['label'] = $taxonomy; 4826 } 4827 if ( empty( $t['args'] ) ) { 4828 $t['args'] = array(); 4829 } 4830 if ( empty( $t['template'] ) ) { 4831 $t['template'] = $args['template']; 4832 } 4833 if ( empty( $t['term_template'] ) ) { 4834 $t['term_template'] = $args['term_template']; 4835 } 4836 4837 $terms = get_object_term_cache( $post->ID, $taxonomy ); 4838 if ( false === $terms ) { 4839 $terms = wp_get_object_terms( $post->ID, $taxonomy, $t['args'] ); 4840 } 4841 $links = array(); 4842 4843 foreach ( $terms as $term ) { 4844 $links[] = wp_sprintf( $t['term_template'], esc_attr( get_term_link( $term ) ), $term->name ); 4845 } 4846 if ( $links ) { 4847 $taxonomies[ $taxonomy ] = wp_sprintf( $t['template'], $t['label'], $links, $terms ); 4848 } 4849 } 4850 return $taxonomies; 4851 } 4852 4853 /** 4854 * Retrieves all taxonomy names for the given post. 4855 * 4856 * @since 2.5.0 4857 * 4858 * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post. 4859 * @return string[] An array of all taxonomy names for the given post. 4860 */ 4861 function get_post_taxonomies( $post = 0 ) { 4862 $post = get_post( $post ); 4863 4864 return get_object_taxonomies( $post ); 4865 } 4866 4867 /** 4868 * Determines if the given object is associated with any of the given terms. 4869 * 4870 * The given terms are checked against the object's terms' term_ids, names and slugs. 4871 * Terms given as integers will only be checked against the object's terms' term_ids. 4872 * If no terms are given, determines if object is associated with any terms in the given taxonomy. 4873 * 4874 * @since 2.7.0 4875 * 4876 * @param int $object_id ID of the object (post ID, link ID, ...). 4877 * @param string $taxonomy Single taxonomy name. 4878 * @param int|string|int[]|string[] $terms Optional. Term ID, name, slug, or array of such 4879 * to check against. Default null. 4880 * @return bool|WP_Error WP_Error on input error. 4881 */ 4882 function is_object_in_term( $object_id, $taxonomy, $terms = null ) { 4883 $object_id = (int) $object_id; 4884 if ( ! $object_id ) { 4885 return new WP_Error( 'invalid_object', __( 'Invalid object ID.' ) ); 4886 } 4887 4888 $object_terms = get_object_term_cache( $object_id, $taxonomy ); 4889 if ( false === $object_terms ) { 4890 $object_terms = wp_get_object_terms( $object_id, $taxonomy, array( 'update_term_meta_cache' => false ) ); 4891 if ( is_wp_error( $object_terms ) ) { 4892 return $object_terms; 4893 } 4894 4895 wp_cache_set( $object_id, wp_list_pluck( $object_terms, 'term_id' ), "{$taxonomy}_relationships" ); 4896 } 4897 4898 if ( is_wp_error( $object_terms ) ) { 4899 return $object_terms; 4900 } 4901 4902 if ( empty( $object_terms ) ) { 4903 return false; 4904 } 4905 4906 if ( empty( $terms ) ) { 4907 return true; 4908 } 4909 4910 $terms = (array) $terms; 4911 4912 $ints = array_filter( $terms, 'is_int' ); 4913 if ( $ints ) { 4914 $strs = array_diff( $terms, $ints ); 4915 } else { 4916 $strs =& $terms; 4917 } 4918 4919 foreach ( $object_terms as $object_term ) { 4920 // If term is an int, check against term_ids only. 4921 if ( $ints && in_array( $object_term->term_id, $ints, true ) ) { 4922 return true; 4923 } 4924 4925 if ( $strs ) { 4926 // Only check numeric strings against term_id, to avoid false matches due to type juggling. 4927 $numeric_strs = array_map( 'intval', array_filter( $strs, 'is_numeric' ) ); 4928 if ( in_array( $object_term->term_id, $numeric_strs, true ) ) { 4929 return true; 4930 } 4931 4932 if ( in_array( $object_term->name, $strs, true ) ) { 4933 return true; 4934 } 4935 if ( in_array( $object_term->slug, $strs, true ) ) { 4936 return true; 4937 } 4938 } 4939 } 4940 4941 return false; 4942 } 4943 4944 /** 4945 * Determines if the given object type is associated with the given taxonomy. 4946 * 4947 * @since 3.0.0 4948 * 4949 * @param string $object_type Object type string. 4950 * @param string $taxonomy Single taxonomy name. 4951 * @return bool True if object is associated with the taxonomy, otherwise false. 4952 */ 4953 function is_object_in_taxonomy( $object_type, $taxonomy ) { 4954 $taxonomies = get_object_taxonomies( $object_type ); 4955 if ( empty( $taxonomies ) ) { 4956 return false; 4957 } 4958 return in_array( $taxonomy, $taxonomies, true ); 4959 } 4960 4961 /** 4962 * Gets an array of ancestor IDs for a given object. 4963 * 4964 * @since 3.1.0 4965 * @since 4.1.0 Introduced the `$resource_type` argument. 4966 * 4967 * @param int $object_id Optional. The ID of the object. Default 0. 4968 * @param string $object_type Optional. The type of object for which we'll be retrieving 4969 * ancestors. Accepts a post type or a taxonomy name. Default empty. 4970 * @param string $resource_type Optional. Type of resource $object_type is. Accepts 'post_type' 4971 * or 'taxonomy'. Default empty. 4972 * @return int[] An array of IDs of ancestors from lowest to highest in the hierarchy. 4973 */ 4974 function get_ancestors( $object_id = 0, $object_type = '', $resource_type = '' ) { 4975 $object_id = (int) $object_id; 4976 4977 $ancestors = array(); 4978 4979 if ( empty( $object_id ) ) { 4980 4981 /** This filter is documented in wp-includes/taxonomy.php */ 4982 return apply_filters( 'get_ancestors', $ancestors, $object_id, $object_type, $resource_type ); 4983 } 4984 4985 if ( ! $resource_type ) { 4986 if ( is_taxonomy_hierarchical( $object_type ) ) { 4987 $resource_type = 'taxonomy'; 4988 } elseif ( post_type_exists( $object_type ) ) { 4989 $resource_type = 'post_type'; 4990 } 4991 } 4992 4993 if ( 'taxonomy' === $resource_type ) { 4994 $term = get_term( $object_id, $object_type ); 4995 while ( ! is_wp_error( $term ) && ! empty( $term->parent ) && ! in_array( $term->parent, $ancestors, true ) ) { 4996 $ancestors[] = (int) $term->parent; 4997 $term = get_term( $term->parent, $object_type ); 4998 } 4999 } elseif ( 'post_type' === $resource_type ) { 5000 $ancestors = get_post_ancestors( $object_id ); 5001 } 5002 5003 /** 5004 * Filters a given object's ancestors. 5005 * 5006 * @since 3.1.0 5007 * @since 4.1.1 Introduced the `$resource_type` parameter. 5008 * 5009 * @param int[] $ancestors An array of IDs of object ancestors. 5010 * @param int $object_id Object ID. 5011 * @param string $object_type Type of object. 5012 * @param string $resource_type Type of resource $object_type is. 5013 */ 5014 return apply_filters( 'get_ancestors', $ancestors, $object_id, $object_type, $resource_type ); 5015 } 5016 5017 /** 5018 * Returns the term's parent's term ID. 5019 * 5020 * @since 3.1.0 5021 * 5022 * @param int $term_id Term ID. 5023 * @param string $taxonomy Taxonomy name. 5024 * @return int|false Parent term ID on success, false on failure. 5025 */ 5026 function wp_get_term_taxonomy_parent_id( $term_id, $taxonomy ) { 5027 $term = get_term( $term_id, $taxonomy ); 5028 if ( ! $term || is_wp_error( $term ) ) { 5029 return false; 5030 } 5031 return (int) $term->parent; 5032 } 5033 5034 /** 5035 * Checks the given subset of the term hierarchy for hierarchy loops. 5036 * Prevents loops from forming and breaks those that it finds. 5037 * 5038 * Attached to the {@see 'wp_update_term_parent'} filter. 5039 * 5040 * @since 3.1.0 5041 * 5042 * @param int $parent_term `term_id` of the parent for the term we're checking. 5043 * @param int $term_id The term we're checking. 5044 * @param string $taxonomy The taxonomy of the term we're checking. 5045 * @return int The new parent for the term. 5046 */ 5047 function wp_check_term_hierarchy_for_loops( $parent_term, $term_id, $taxonomy ) { 5048 // Nothing fancy here - bail. 5049 if ( ! $parent_term ) { 5050 return 0; 5051 } 5052 5053 // Can't be its own parent. 5054 if ( $parent_term === $term_id ) { 5055 return 0; 5056 } 5057 5058 // Now look for larger loops. 5059 $loop = wp_find_hierarchy_loop( 'wp_get_term_taxonomy_parent_id', $term_id, $parent_term, array( $taxonomy ) ); 5060 if ( ! $loop ) { 5061 return $parent_term; // No loop. 5062 } 5063 5064 // Setting $parent_term to the given value causes a loop. 5065 if ( isset( $loop[ $term_id ] ) ) { 5066 return 0; 5067 } 5068 5069 // There's a loop, but it doesn't contain $term_id. Break the loop. 5070 foreach ( array_keys( $loop ) as $loop_member ) { 5071 wp_update_term( $loop_member, $taxonomy, array( 'parent' => 0 ) ); 5072 } 5073 5074 return $parent_term; 5075 } 5076 5077 /** 5078 * Determines whether a taxonomy is considered "viewable". 5079 * 5080 * @since 5.1.0 5081 * 5082 * @param string|WP_Taxonomy $taxonomy Taxonomy name or object. 5083 * @return bool Whether the taxonomy should be considered viewable. 5084 */ 5085 function is_taxonomy_viewable( $taxonomy ) { 5086 if ( is_scalar( $taxonomy ) ) { 5087 $taxonomy = get_taxonomy( $taxonomy ); 5088 if ( ! $taxonomy ) { 5089 return false; 5090 } 5091 } 5092 5093 return $taxonomy->publicly_queryable; 5094 } 5095 5096 /** 5097 * Determines whether a term is publicly viewable. 5098 * 5099 * A term is considered publicly viewable if its taxonomy is viewable. 5100 * 5101 * @since 6.1.0 5102 * 5103 * @param int|WP_Term $term Term ID or term object. 5104 * @return bool Whether the term is publicly viewable. 5105 */ 5106 function is_term_publicly_viewable( $term ) { 5107 $term = get_term( $term ); 5108 5109 if ( ! $term ) { 5110 return false; 5111 } 5112 5113 return is_taxonomy_viewable( $term->taxonomy ); 5114 } 5115 5116 /** 5117 * Sets the last changed time for the 'terms' cache group. 5118 * 5119 * @since 5.0.0 5120 */ 5121 function wp_cache_set_terms_last_changed() { 5122 wp_cache_set_last_changed( 'terms' ); 5123 } 5124 5125 /** 5126 * Aborts calls to term meta if it is not supported. 5127 * 5128 * @since 5.0.0 5129 * 5130 * @param mixed $check Skip-value for whether to proceed term meta function execution. 5131 * @return mixed Original value of $check, or false if term meta is not supported. 5132 */ 5133 function wp_check_term_meta_support_prefilter( $check ) { 5134 if ( get_option( 'db_version' ) < 34370 ) { 5135 return false; 5136 } 5137 5138 return $check; 5139 }
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