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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 New 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 } 226 227 /** 228 * Retrieves a list of registered taxonomy names or objects. 229 * 230 * @since 3.0.0 231 * 232 * @global WP_Taxonomy[] $wp_taxonomies The registered taxonomies. 233 * 234 * @param array $args Optional. An array of `key => value` arguments to match against the taxonomy objects. 235 * Default empty array. 236 * @param string $output Optional. The type of output to return in the array. Accepts either taxonomy 'names' 237 * or 'objects'. Default 'names'. 238 * @param string $operator Optional. The logical operation to perform. Accepts 'and' or 'or'. 'or' means only 239 * one element from the array needs to match; 'and' means all elements must match. 240 * Default 'and'. 241 * @return string[]|WP_Taxonomy[] An array of taxonomy names or objects. 242 */ 243 function get_taxonomies( $args = array(), $output = 'names', $operator = 'and' ) { 244 global $wp_taxonomies; 245 246 $field = ( 'names' === $output ) ? 'name' : false; 247 248 return wp_filter_object_list( $wp_taxonomies, $args, $operator, $field ); 249 } 250 251 /** 252 * Returns the names or objects of the taxonomies which are registered for the requested object or object type, 253 * such as a post object or post type name. 254 * 255 * Example: 256 * 257 * $taxonomies = get_object_taxonomies( 'post' ); 258 * 259 * This results in: 260 * 261 * Array( 'category', 'post_tag' ) 262 * 263 * @since 2.3.0 264 * 265 * @global WP_Taxonomy[] $wp_taxonomies The registered taxonomies. 266 * 267 * @param string|string[]|WP_Post $object Name of the type of taxonomy object, or an object (row from posts) 268 * @param string $output Optional. The type of output to return in the array. Accepts either 269 * 'names' or 'objects'. Default 'names'. 270 * @return string[]|WP_Taxonomy[] The names or objects of all taxonomies of `$object_type`. 271 */ 272 function get_object_taxonomies( $object, $output = 'names' ) { 273 global $wp_taxonomies; 274 275 if ( is_object( $object ) ) { 276 if ( 'attachment' === $object->post_type ) { 277 return get_attachment_taxonomies( $object, $output ); 278 } 279 $object = $object->post_type; 280 } 281 282 $object = (array) $object; 283 284 $taxonomies = array(); 285 foreach ( (array) $wp_taxonomies as $tax_name => $tax_obj ) { 286 if ( array_intersect( $object, (array) $tax_obj->object_type ) ) { 287 if ( 'names' === $output ) { 288 $taxonomies[] = $tax_name; 289 } else { 290 $taxonomies[ $tax_name ] = $tax_obj; 291 } 292 } 293 } 294 295 return $taxonomies; 296 } 297 298 /** 299 * Retrieves the taxonomy object of $taxonomy. 300 * 301 * The get_taxonomy function will first check that the parameter string given 302 * is a taxonomy object and if it is, it will return it. 303 * 304 * @since 2.3.0 305 * 306 * @global WP_Taxonomy[] $wp_taxonomies The registered taxonomies. 307 * 308 * @param string $taxonomy Name of taxonomy object to return. 309 * @return WP_Taxonomy|false The taxonomy object or false if $taxonomy doesn't exist. 310 */ 311 function get_taxonomy( $taxonomy ) { 312 global $wp_taxonomies; 313 314 if ( ! taxonomy_exists( $taxonomy ) ) { 315 return false; 316 } 317 318 return $wp_taxonomies[ $taxonomy ]; 319 } 320 321 /** 322 * Determines whether the taxonomy name exists. 323 * 324 * Formerly is_taxonomy(), introduced in 2.3.0. 325 * 326 * For more information on this and similar theme functions, check out 327 * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/ 328 * Conditional Tags} article in the Theme Developer Handbook. 329 * 330 * @since 3.0.0 331 * 332 * @global WP_Taxonomy[] $wp_taxonomies The registered taxonomies. 333 * 334 * @param string $taxonomy Name of taxonomy object. 335 * @return bool Whether the taxonomy exists. 336 */ 337 function taxonomy_exists( $taxonomy ) { 338 global $wp_taxonomies; 339 340 return isset( $wp_taxonomies[ $taxonomy ] ); 341 } 342 343 /** 344 * Determines whether the taxonomy object is hierarchical. 345 * 346 * Checks to make sure that the taxonomy is an object first. Then Gets the 347 * object, and finally returns the hierarchical value in the object. 348 * 349 * A false return value might also mean that the taxonomy does not exist. 350 * 351 * For more information on this and similar theme functions, check out 352 * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/ 353 * Conditional Tags} article in the Theme Developer Handbook. 354 * 355 * @since 2.3.0 356 * 357 * @param string $taxonomy Name of taxonomy object. 358 * @return bool Whether the taxonomy is hierarchical. 359 */ 360 function is_taxonomy_hierarchical( $taxonomy ) { 361 if ( ! taxonomy_exists( $taxonomy ) ) { 362 return false; 363 } 364 365 $taxonomy = get_taxonomy( $taxonomy ); 366 return $taxonomy->hierarchical; 367 } 368 369 /** 370 * Creates or modifies a taxonomy object. 371 * 372 * Note: Do not use before the {@see 'init'} hook. 373 * 374 * A simple function for creating or modifying a taxonomy object based on 375 * the parameters given. If modifying an existing taxonomy object, note 376 * that the `$object_type` value from the original registration will be 377 * overwritten. 378 * 379 * @since 2.3.0 380 * @since 4.2.0 Introduced `show_in_quick_edit` argument. 381 * @since 4.4.0 The `show_ui` argument is now enforced on the term editing screen. 382 * @since 4.4.0 The `public` argument now controls whether the taxonomy can be queried on the front end. 383 * @since 4.5.0 Introduced `publicly_queryable` argument. 384 * @since 4.7.0 Introduced `show_in_rest`, 'rest_base' and 'rest_controller_class' 385 * arguments to register the taxonomy in REST API. 386 * @since 5.1.0 Introduced `meta_box_sanitize_cb` argument. 387 * @since 5.4.0 Added the registered taxonomy object as a return value. 388 * @since 5.5.0 Introduced `default_term` argument. 389 * @since 5.9.0 Introduced `rest_namespace` argument. 390 * 391 * @global WP_Taxonomy[] $wp_taxonomies Registered taxonomies. 392 * 393 * @param string $taxonomy Taxonomy key, must not exceed 32 characters. 394 * @param array|string $object_type Object type or array of object types with which the taxonomy should be associated. 395 * @param array|string $args { 396 * Optional. Array or query string of arguments for registering a taxonomy. 397 * 398 * @type string[] $labels An array of labels for this taxonomy. By default, Tag labels are 399 * used for non-hierarchical taxonomies, and Category labels are used 400 * for hierarchical taxonomies. See accepted values in 401 * get_taxonomy_labels(). Default empty array. 402 * @type string $description A short descriptive summary of what the taxonomy is for. Default empty. 403 * @type bool $public Whether a taxonomy is intended for use publicly either via 404 * the admin interface or by front-end users. The default settings 405 * of `$publicly_queryable`, `$show_ui`, and `$show_in_nav_menus` 406 * are inherited from `$public`. 407 * @type bool $publicly_queryable Whether the taxonomy is publicly queryable. 408 * If not set, the default is inherited from `$public` 409 * @type bool $hierarchical Whether the taxonomy is hierarchical. Default false. 410 * @type bool $show_ui Whether to generate and allow a UI for managing terms in this taxonomy in 411 * the admin. If not set, the default is inherited from `$public` 412 * (default true). 413 * @type bool $show_in_menu Whether to show the taxonomy in the admin menu. If true, the taxonomy is 414 * shown as a submenu of the object type menu. If false, no menu is shown. 415 * `$show_ui` must be true. If not set, default is inherited from `$show_ui` 416 * (default true). 417 * @type bool $show_in_nav_menus Makes this taxonomy available for selection in navigation menus. If not 418 * set, the default is inherited from `$public` (default true). 419 * @type bool $show_in_rest Whether to include the taxonomy in the REST API. Set this to true 420 * for the taxonomy to be available in the block editor. 421 * @type string $rest_base To change the base url of REST API route. Default is $taxonomy. 422 * @type string $rest_namespace To change the namespace URL of REST API route. Default is wp/v2. 423 * @type string $rest_controller_class REST API Controller class name. Default is 'WP_REST_Terms_Controller'. 424 * @type bool $show_tagcloud Whether to list the taxonomy in the Tag Cloud Widget controls. If not set, 425 * the default is inherited from `$show_ui` (default true). 426 * @type bool $show_in_quick_edit Whether to show the taxonomy in the quick/bulk edit panel. It not set, 427 * the default is inherited from `$show_ui` (default true). 428 * @type bool $show_admin_column Whether to display a column for the taxonomy on its post type listing 429 * screens. Default false. 430 * @type bool|callable $meta_box_cb Provide a callback function for the meta box display. If not set, 431 * post_categories_meta_box() is used for hierarchical taxonomies, and 432 * post_tags_meta_box() is used for non-hierarchical. If false, no meta 433 * box is shown. 434 * @type callable $meta_box_sanitize_cb Callback function for sanitizing taxonomy data saved from a meta 435 * box. If no callback is defined, an appropriate one is determined 436 * based on the value of `$meta_box_cb`. 437 * @type string[] $capabilities { 438 * Array of capabilities for this taxonomy. 439 * 440 * @type string $manage_terms Default 'manage_categories'. 441 * @type string $edit_terms Default 'manage_categories'. 442 * @type string $delete_terms Default 'manage_categories'. 443 * @type string $assign_terms Default 'edit_posts'. 444 * } 445 * @type bool|array $rewrite { 446 * Triggers the handling of rewrites for this taxonomy. Default true, using $taxonomy as slug. To prevent 447 * rewrite, set to false. To specify rewrite rules, an array can be passed with any of these keys: 448 * 449 * @type string $slug Customize the permastruct slug. Default `$taxonomy` key. 450 * @type bool $with_front Should the permastruct be prepended with WP_Rewrite::$front. Default true. 451 * @type bool $hierarchical Either hierarchical rewrite tag or not. Default false. 452 * @type int $ep_mask Assign an endpoint mask. Default `EP_NONE`. 453 * } 454 * @type string|bool $query_var Sets the query var key for this taxonomy. Default `$taxonomy` key. If 455 * false, a taxonomy cannot be loaded at `?{query_var}={term_slug}`. If a 456 * string, the query `?{query_var}={term_slug}` will be valid. 457 * @type callable $update_count_callback Works much like a hook, in that it will be called when the count is 458 * updated. Default _update_post_term_count() for taxonomies attached 459 * to post types, which confirms that the objects are published before 460 * counting them. Default _update_generic_term_count() for taxonomies 461 * attached to other object types, such as users. 462 * @type string|array $default_term { 463 * Default term to be used for the taxonomy. 464 * 465 * @type string $name Name of default term. 466 * @type string $slug Slug for default term. Default empty. 467 * @type string $description Description for default term. Default empty. 468 * } 469 * @type bool $sort Whether terms in this taxonomy should be sorted in the order they are 470 * provided to `wp_set_object_terms()`. Default null which equates to false. 471 * @type array $args Array of arguments to automatically use inside `wp_get_object_terms()` 472 * for this taxonomy. 473 * @type bool $_builtin This taxonomy is a "built-in" taxonomy. INTERNAL USE ONLY! 474 * Default false. 475 * } 476 * @return WP_Taxonomy|WP_Error The registered taxonomy object on success, WP_Error object on failure. 477 */ 478 function register_taxonomy( $taxonomy, $object_type, $args = array() ) { 479 global $wp_taxonomies; 480 481 if ( ! is_array( $wp_taxonomies ) ) { 482 $wp_taxonomies = array(); 483 } 484 485 $args = wp_parse_args( $args ); 486 487 if ( empty( $taxonomy ) || strlen( $taxonomy ) > 32 ) { 488 _doing_it_wrong( __FUNCTION__, __( 'Taxonomy names must be between 1 and 32 characters in length.' ), '4.2.0' ); 489 return new WP_Error( 'taxonomy_length_invalid', __( 'Taxonomy names must be between 1 and 32 characters in length.' ) ); 490 } 491 492 $taxonomy_object = new WP_Taxonomy( $taxonomy, $object_type, $args ); 493 $taxonomy_object->add_rewrite_rules(); 494 495 $wp_taxonomies[ $taxonomy ] = $taxonomy_object; 496 497 $taxonomy_object->add_hooks(); 498 499 // Add default term. 500 if ( ! empty( $taxonomy_object->default_term ) ) { 501 $term = term_exists( $taxonomy_object->default_term['name'], $taxonomy ); 502 if ( $term ) { 503 update_option( 'default_term_' . $taxonomy_object->name, $term['term_id'] ); 504 } else { 505 $term = wp_insert_term( 506 $taxonomy_object->default_term['name'], 507 $taxonomy, 508 array( 509 'slug' => sanitize_title( $taxonomy_object->default_term['slug'] ), 510 'description' => $taxonomy_object->default_term['description'], 511 ) 512 ); 513 514 // Update `term_id` in options. 515 if ( ! is_wp_error( $term ) ) { 516 update_option( 'default_term_' . $taxonomy_object->name, $term['term_id'] ); 517 } 518 } 519 } 520 521 /** 522 * Fires after a taxonomy is registered. 523 * 524 * @since 3.3.0 525 * 526 * @param string $taxonomy Taxonomy slug. 527 * @param array|string $object_type Object type or array of object types. 528 * @param array $args Array of taxonomy registration arguments. 529 */ 530 do_action( 'registered_taxonomy', $taxonomy, $object_type, (array) $taxonomy_object ); 531 532 /** 533 * Fires after a specific taxonomy is registered. 534 * 535 * The dynamic portion of the filter name, `$taxonomy`, refers to the taxonomy key. 536 * 537 * Possible hook names include: 538 * 539 * - `registered_taxonomy_category` 540 * - `registered_taxonomy_post_tag` 541 * 542 * @since 6.0.0 543 * 544 * @param string $taxonomy Taxonomy slug. 545 * @param array|string $object_type Object type or array of object types. 546 * @param array $args Array of taxonomy registration arguments. 547 */ 548 do_action( "registered_taxonomy_{$taxonomy}", $taxonomy, $object_type, (array) $taxonomy_object ); 549 550 return $taxonomy_object; 551 } 552 553 /** 554 * Unregisters a taxonomy. 555 * 556 * Can not be used to unregister built-in taxonomies. 557 * 558 * @since 4.5.0 559 * 560 * @global WP $wp Current WordPress environment instance. 561 * @global WP_Taxonomy[] $wp_taxonomies List of taxonomies. 562 * 563 * @param string $taxonomy Taxonomy name. 564 * @return true|WP_Error True on success, WP_Error on failure or if the taxonomy doesn't exist. 565 */ 566 function unregister_taxonomy( $taxonomy ) { 567 if ( ! taxonomy_exists( $taxonomy ) ) { 568 return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy.' ) ); 569 } 570 571 $taxonomy_object = get_taxonomy( $taxonomy ); 572 573 // Do not allow unregistering internal taxonomies. 574 if ( $taxonomy_object->_builtin ) { 575 return new WP_Error( 'invalid_taxonomy', __( 'Unregistering a built-in taxonomy is not allowed.' ) ); 576 } 577 578 global $wp_taxonomies; 579 580 $taxonomy_object->remove_rewrite_rules(); 581 $taxonomy_object->remove_hooks(); 582 583 // Remove custom taxonomy default term option. 584 if ( ! empty( $taxonomy_object->default_term ) ) { 585 delete_option( 'default_term_' . $taxonomy_object->name ); 586 } 587 588 // Remove the taxonomy. 589 unset( $wp_taxonomies[ $taxonomy ] ); 590 591 /** 592 * Fires after a taxonomy is unregistered. 593 * 594 * @since 4.5.0 595 * 596 * @param string $taxonomy Taxonomy name. 597 */ 598 do_action( 'unregistered_taxonomy', $taxonomy ); 599 600 return true; 601 } 602 603 /** 604 * Builds an object with all taxonomy labels out of a taxonomy object. 605 * 606 * @since 3.0.0 607 * @since 4.3.0 Added the `no_terms` label. 608 * @since 4.4.0 Added the `items_list_navigation` and `items_list` labels. 609 * @since 4.9.0 Added the `most_used` and `back_to_items` labels. 610 * @since 5.7.0 Added the `filter_by_item` label. 611 * @since 5.8.0 Added the `item_link` and `item_link_description` labels. 612 * @since 5.9.0 Added the `name_field_description`, `slug_field_description`, 613 * `parent_field_description`, and `desc_field_description` labels. 614 * 615 * @param WP_Taxonomy $tax Taxonomy object. 616 * @return object { 617 * Taxonomy labels object. The first default value is for non-hierarchical taxonomies 618 * (like tags) and the second one is for hierarchical taxonomies (like categories). 619 * 620 * @type string $name General name for the taxonomy, usually plural. The same 621 * as and overridden by `$tax->label`. Default 'Tags'/'Categories'. 622 * @type string $singular_name Name for one object of this taxonomy. Default 'Tag'/'Category'. 623 * @type string $search_items Default 'Search Tags'/'Search Categories'. 624 * @type string $popular_items This label is only used for non-hierarchical taxonomies. 625 * Default 'Popular Tags'. 626 * @type string $all_items Default 'All Tags'/'All Categories'. 627 * @type string $parent_item This label is only used for hierarchical taxonomies. Default 628 * 'Parent Category'. 629 * @type string $parent_item_colon The same as `parent_item`, but with colon `:` in the end. 630 * @type string $name_field_description Description for the Name field on Edit Tags screen. 631 * Default 'The name is how it appears on your site'. 632 * @type string $slug_field_description Description for the Slug field on Edit Tags screen. 633 * Default 'The “slug” is the URL-friendly version 634 * of the name. It is usually all lowercase and contains 635 * only letters, numbers, and hyphens'. 636 * @type string $parent_field_description Description for the Parent field on Edit Tags screen. 637 * Default 'Assign a parent term to create a hierarchy. 638 * The term Jazz, for example, would be the parent 639 * of Bebop and Big Band'. 640 * @type string $desc_field_description Description for the Description field on Edit Tags screen. 641 * Default 'The description is not prominent by default; 642 * however, some themes may show it'. 643 * @type string $edit_item Default 'Edit Tag'/'Edit Category'. 644 * @type string $view_item Default 'View Tag'/'View Category'. 645 * @type string $update_item Default 'Update Tag'/'Update Category'. 646 * @type string $add_new_item Default 'Add New Tag'/'Add New Category'. 647 * @type string $new_item_name Default 'New Tag Name'/'New Category Name'. 648 * @type string $separate_items_with_commas This label is only used for non-hierarchical taxonomies. Default 649 * 'Separate tags with commas', used in the meta box. 650 * @type string $add_or_remove_items This label is only used for non-hierarchical taxonomies. Default 651 * 'Add or remove tags', used in the meta box when JavaScript 652 * is disabled. 653 * @type string $choose_from_most_used This label is only used on non-hierarchical taxonomies. Default 654 * 'Choose from the most used tags', used in the meta box. 655 * @type string $not_found Default 'No tags found'/'No categories found', used in 656 * the meta box and taxonomy list table. 657 * @type string $no_terms Default 'No tags'/'No categories', used in the posts and media 658 * list tables. 659 * @type string $filter_by_item This label is only used for hierarchical taxonomies. Default 660 * 'Filter by category', used in the posts list table. 661 * @type string $items_list_navigation Label for the table pagination hidden heading. 662 * @type string $items_list Label for the table hidden heading. 663 * @type string $most_used Title for the Most Used tab. Default 'Most Used'. 664 * @type string $back_to_items Label displayed after a term has been updated. 665 * @type string $item_link Used in the block editor. Title for a navigation link block variation. 666 * Default 'Tag Link'/'Category Link'. 667 * @type string $item_link_description Used in the block editor. Description for a navigation link block 668 * variation. Default 'A link to a tag'/'A link to a category'. 669 * } 670 */ 671 function get_taxonomy_labels( $tax ) { 672 $tax->labels = (array) $tax->labels; 673 674 if ( isset( $tax->helps ) && empty( $tax->labels['separate_items_with_commas'] ) ) { 675 $tax->labels['separate_items_with_commas'] = $tax->helps; 676 } 677 678 if ( isset( $tax->no_tagcloud ) && empty( $tax->labels['not_found'] ) ) { 679 $tax->labels['not_found'] = $tax->no_tagcloud; 680 } 681 682 $nohier_vs_hier_defaults = WP_Taxonomy::get_default_labels(); 683 684 $nohier_vs_hier_defaults['menu_name'] = $nohier_vs_hier_defaults['name']; 685 686 $labels = _get_custom_object_labels( $tax, $nohier_vs_hier_defaults ); 687 688 $taxonomy = $tax->name; 689 690 $default_labels = clone $labels; 691 692 /** 693 * Filters the labels of a specific taxonomy. 694 * 695 * The dynamic portion of the hook name, `$taxonomy`, refers to the taxonomy slug. 696 * 697 * Possible hook names include: 698 * 699 * - `taxonomy_labels_category` 700 * - `taxonomy_labels_post_tag` 701 * 702 * @since 4.4.0 703 * 704 * @see get_taxonomy_labels() for the full list of taxonomy labels. 705 * 706 * @param object $labels Object with labels for the taxonomy as member variables. 707 */ 708 $labels = apply_filters( "taxonomy_labels_{$taxonomy}", $labels ); 709 710 // Ensure that the filtered labels contain all required default values. 711 $labels = (object) array_merge( (array) $default_labels, (array) $labels ); 712 713 return $labels; 714 } 715 716 /** 717 * Adds an already registered taxonomy to an object type. 718 * 719 * @since 3.0.0 720 * 721 * @global WP_Taxonomy[] $wp_taxonomies The registered taxonomies. 722 * 723 * @param string $taxonomy Name of taxonomy object. 724 * @param string $object_type Name of the object type. 725 * @return bool True if successful, false if not. 726 */ 727 function register_taxonomy_for_object_type( $taxonomy, $object_type ) { 728 global $wp_taxonomies; 729 730 if ( ! isset( $wp_taxonomies[ $taxonomy ] ) ) { 731 return false; 732 } 733 734 if ( ! get_post_type_object( $object_type ) ) { 735 return false; 736 } 737 738 if ( ! in_array( $object_type, $wp_taxonomies[ $taxonomy ]->object_type, true ) ) { 739 $wp_taxonomies[ $taxonomy ]->object_type[] = $object_type; 740 } 741 742 // Filter out empties. 743 $wp_taxonomies[ $taxonomy ]->object_type = array_filter( $wp_taxonomies[ $taxonomy ]->object_type ); 744 745 /** 746 * Fires after a taxonomy is registered for an object type. 747 * 748 * @since 5.1.0 749 * 750 * @param string $taxonomy Taxonomy name. 751 * @param string $object_type Name of the object type. 752 */ 753 do_action( 'registered_taxonomy_for_object_type', $taxonomy, $object_type ); 754 755 return true; 756 } 757 758 /** 759 * Removes an already registered taxonomy from an object type. 760 * 761 * @since 3.7.0 762 * 763 * @global WP_Taxonomy[] $wp_taxonomies The registered taxonomies. 764 * 765 * @param string $taxonomy Name of taxonomy object. 766 * @param string $object_type Name of the object type. 767 * @return bool True if successful, false if not. 768 */ 769 function unregister_taxonomy_for_object_type( $taxonomy, $object_type ) { 770 global $wp_taxonomies; 771 772 if ( ! isset( $wp_taxonomies[ $taxonomy ] ) ) { 773 return false; 774 } 775 776 if ( ! get_post_type_object( $object_type ) ) { 777 return false; 778 } 779 780 $key = array_search( $object_type, $wp_taxonomies[ $taxonomy ]->object_type, true ); 781 if ( false === $key ) { 782 return false; 783 } 784 785 unset( $wp_taxonomies[ $taxonomy ]->object_type[ $key ] ); 786 787 /** 788 * Fires after a taxonomy is unregistered for an object type. 789 * 790 * @since 5.1.0 791 * 792 * @param string $taxonomy Taxonomy name. 793 * @param string $object_type Name of the object type. 794 */ 795 do_action( 'unregistered_taxonomy_for_object_type', $taxonomy, $object_type ); 796 797 return true; 798 } 799 800 // 801 // Term API. 802 // 803 804 /** 805 * Retrieves object IDs of valid taxonomy and term. 806 * 807 * The strings of `$taxonomies` must exist before this function will continue. 808 * On failure of finding a valid taxonomy, it will return a WP_Error. 809 * 810 * The `$terms` aren't checked the same as `$taxonomies`, but still need to exist 811 * for object IDs to be returned. 812 * 813 * It is possible to change the order that object IDs are returned by using `$args` 814 * with either ASC or DESC array. The value should be in the key named 'order'. 815 * 816 * @since 2.3.0 817 * 818 * @global wpdb $wpdb WordPress database abstraction object. 819 * 820 * @param int|int[] $term_ids Term ID or array of term IDs of terms that will be used. 821 * @param string|string[] $taxonomies String of taxonomy name or Array of string values of taxonomy names. 822 * @param array|string $args Change the order of the object IDs, either ASC or DESC. 823 * @return string[]|WP_Error An array of object IDs as numeric strings on success, 824 * WP_Error if the taxonomy does not exist. 825 */ 826 function get_objects_in_term( $term_ids, $taxonomies, $args = array() ) { 827 global $wpdb; 828 829 if ( ! is_array( $term_ids ) ) { 830 $term_ids = array( $term_ids ); 831 } 832 if ( ! is_array( $taxonomies ) ) { 833 $taxonomies = array( $taxonomies ); 834 } 835 foreach ( (array) $taxonomies as $taxonomy ) { 836 if ( ! taxonomy_exists( $taxonomy ) ) { 837 return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy.' ) ); 838 } 839 } 840 841 $defaults = array( 'order' => 'ASC' ); 842 $args = wp_parse_args( $args, $defaults ); 843 844 $order = ( 'desc' === strtolower( $args['order'] ) ) ? 'DESC' : 'ASC'; 845 846 $term_ids = array_map( 'intval', $term_ids ); 847 848 $taxonomies = "'" . implode( "', '", array_map( 'esc_sql', $taxonomies ) ) . "'"; 849 $term_ids = "'" . implode( "', '", $term_ids ) . "'"; 850 851 $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"; 852 853 $last_changed = wp_cache_get_last_changed( 'terms' ); 854 $cache_key = 'get_objects_in_term:' . md5( $sql ) . ":$last_changed"; 855 $cache = wp_cache_get( $cache_key, 'terms' ); 856 if ( false === $cache ) { 857 $object_ids = $wpdb->get_col( $sql ); 858 wp_cache_set( $cache_key, $object_ids, 'terms' ); 859 } else { 860 $object_ids = (array) $cache; 861 } 862 863 if ( ! $object_ids ) { 864 return array(); 865 } 866 return $object_ids; 867 } 868 869 /** 870 * Given a taxonomy query, generates SQL to be appended to a main query. 871 * 872 * @since 3.1.0 873 * 874 * @see WP_Tax_Query 875 * 876 * @param array $tax_query A compact tax query 877 * @param string $primary_table 878 * @param string $primary_id_column 879 * @return string[] 880 */ 881 function get_tax_sql( $tax_query, $primary_table, $primary_id_column ) { 882 $tax_query_obj = new WP_Tax_Query( $tax_query ); 883 return $tax_query_obj->get_sql( $primary_table, $primary_id_column ); 884 } 885 886 /** 887 * Gets all term data from database by term ID. 888 * 889 * The usage of the get_term function is to apply filters to a term object. It 890 * is possible to get a term object from the database before applying the 891 * filters. 892 * 893 * $term ID must be part of $taxonomy, to get from the database. Failure, might 894 * be able to be captured by the hooks. Failure would be the same value as $wpdb 895 * returns for the get_row method. 896 * 897 * There are two hooks, one is specifically for each term, named 'get_term', and 898 * the second is for the taxonomy name, 'term_$taxonomy'. Both hooks gets the 899 * term object, and the taxonomy name as parameters. Both hooks are expected to 900 * return a term object. 901 * 902 * {@see 'get_term'} hook - Takes two parameters the term Object and the taxonomy name. 903 * Must return term object. Used in get_term() as a catch-all filter for every 904 * $term. 905 * 906 * {@see 'get_$taxonomy'} hook - Takes two parameters the term Object and the taxonomy 907 * name. Must return term object. $taxonomy will be the taxonomy name, so for 908 * example, if 'category', it would be 'get_category' as the filter name. Useful 909 * for custom taxonomies or plugging into default taxonomies. 910 * 911 * @todo Better formatting for DocBlock 912 * 913 * @since 2.3.0 914 * @since 4.4.0 Converted to return a WP_Term object if `$output` is `OBJECT`. 915 * The `$taxonomy` parameter was made optional. 916 * 917 * @see sanitize_term_field() The $context param lists the available values for get_term_by() $filter param. 918 * 919 * @param int|WP_Term|object $term If integer, term data will be fetched from the database, 920 * or from the cache if available. 921 * If stdClass object (as in the results of a database query), 922 * will apply filters and return a `WP_Term` object with the `$term` data. 923 * If `WP_Term`, will return `$term`. 924 * @param string $taxonomy Optional. Taxonomy name that `$term` is part of. 925 * @param string $output Optional. The required return type. One of OBJECT, ARRAY_A, or ARRAY_N, which 926 * correspond to a WP_Term object, an associative array, or a numeric array, 927 * respectively. Default OBJECT. 928 * @param string $filter Optional. How to sanitize term fields. Default 'raw'. 929 * @return WP_Term|array|WP_Error|null WP_Term instance (or array) on success, depending on the `$output` value. 930 * WP_Error if `$taxonomy` does not exist. Null for miscellaneous failure. 931 */ 932 function get_term( $term, $taxonomy = '', $output = OBJECT, $filter = 'raw' ) { 933 if ( empty( $term ) ) { 934 return new WP_Error( 'invalid_term', __( 'Empty Term.' ) ); 935 } 936 937 if ( $taxonomy && ! taxonomy_exists( $taxonomy ) ) { 938 return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy.' ) ); 939 } 940 941 if ( $term instanceof WP_Term ) { 942 $_term = $term; 943 } elseif ( is_object( $term ) ) { 944 if ( empty( $term->filter ) || 'raw' === $term->filter ) { 945 $_term = sanitize_term( $term, $taxonomy, 'raw' ); 946 $_term = new WP_Term( $_term ); 947 } else { 948 $_term = WP_Term::get_instance( $term->term_id ); 949 } 950 } else { 951 $_term = WP_Term::get_instance( $term, $taxonomy ); 952 } 953 954 if ( is_wp_error( $_term ) ) { 955 return $_term; 956 } elseif ( ! $_term ) { 957 return null; 958 } 959 960 // Ensure for filters that this is not empty. 961 $taxonomy = $_term->taxonomy; 962 963 /** 964 * Filters a taxonomy term object. 965 * 966 * The {@see 'get_$taxonomy'} hook is also available for targeting a specific 967 * taxonomy. 968 * 969 * @since 2.3.0 970 * @since 4.4.0 `$_term` is now a `WP_Term` object. 971 * 972 * @param WP_Term $_term Term object. 973 * @param string $taxonomy The taxonomy slug. 974 */ 975 $_term = apply_filters( 'get_term', $_term, $taxonomy ); 976 977 /** 978 * Filters a taxonomy term object. 979 * 980 * The dynamic portion of the hook name, `$taxonomy`, refers 981 * to the slug of the term's taxonomy. 982 * 983 * Possible hook names include: 984 * 985 * - `get_category` 986 * - `get_post_tag` 987 * 988 * @since 2.3.0 989 * @since 4.4.0 `$_term` is now a `WP_Term` object. 990 * 991 * @param WP_Term $_term Term object. 992 * @param string $taxonomy The taxonomy slug. 993 */ 994 $_term = apply_filters( "get_{$taxonomy}", $_term, $taxonomy ); 995 996 // Bail if a filter callback has changed the type of the `$_term` object. 997 if ( ! ( $_term instanceof WP_Term ) ) { 998 return $_term; 999 } 1000 1001 // Sanitize term, according to the specified filter. 1002 $_term->filter( $filter ); 1003 1004 if ( ARRAY_A === $output ) { 1005 return $_term->to_array(); 1006 } elseif ( ARRAY_N === $output ) { 1007 return array_values( $_term->to_array() ); 1008 } 1009 1010 return $_term; 1011 } 1012 1013 /** 1014 * Gets all term data from database by term field and data. 1015 * 1016 * Warning: $value is not escaped for 'name' $field. You must do it yourself, if 1017 * required. 1018 * 1019 * The default $field is 'id', therefore it is possible to also use null for 1020 * field, but not recommended that you do so. 1021 * 1022 * If $value does not exist, the return value will be false. If $taxonomy exists 1023 * and $field and $value combinations exist, the term will be returned. 1024 * 1025 * This function will always return the first term that matches the `$field`- 1026 * `$value`-`$taxonomy` combination specified in the parameters. If your query 1027 * is likely to match more than one term (as is likely to be the case when 1028 * `$field` is 'name', for example), consider using get_terms() instead; that 1029 * way, you will get all matching terms, and can provide your own logic for 1030 * deciding which one was intended. 1031 * 1032 * @todo Better formatting for DocBlock. 1033 * 1034 * @since 2.3.0 1035 * @since 4.4.0 `$taxonomy` is optional if `$field` is 'term_taxonomy_id'. Converted to return 1036 * a WP_Term object if `$output` is `OBJECT`. 1037 * @since 5.5.0 Added 'ID' as an alias of 'id' for the `$field` parameter. 1038 * 1039 * @see sanitize_term_field() The $context param lists the available values for get_term_by() $filter param. 1040 * 1041 * @param string $field Either 'slug', 'name', 'term_id' (or 'id', 'ID'), or 'term_taxonomy_id'. 1042 * @param string|int $value Search for this term value. 1043 * @param string $taxonomy Taxonomy name. Optional, if `$field` is 'term_taxonomy_id'. 1044 * @param string $output Optional. The required return type. One of OBJECT, ARRAY_A, or ARRAY_N, which 1045 * correspond to a WP_Term object, an associative array, or a numeric array, 1046 * respectively. Default OBJECT. 1047 * @param string $filter Optional. How to sanitize term fields. Default 'raw'. 1048 * @return WP_Term|array|false WP_Term instance (or array) on success, depending on the `$output` value. 1049 * False if `$taxonomy` does not exist or `$term` was not found. 1050 */ 1051 function get_term_by( $field, $value, $taxonomy = '', $output = OBJECT, $filter = 'raw' ) { 1052 1053 // 'term_taxonomy_id' lookups don't require taxonomy checks. 1054 if ( 'term_taxonomy_id' !== $field && ! taxonomy_exists( $taxonomy ) ) { 1055 return false; 1056 } 1057 1058 // No need to perform a query for empty 'slug' or 'name'. 1059 if ( 'slug' === $field || 'name' === $field ) { 1060 $value = (string) $value; 1061 1062 if ( 0 === strlen( $value ) ) { 1063 return false; 1064 } 1065 } 1066 1067 if ( 'id' === $field || 'ID' === $field || 'term_id' === $field ) { 1068 $term = get_term( (int) $value, $taxonomy, $output, $filter ); 1069 if ( is_wp_error( $term ) || null === $term ) { 1070 $term = false; 1071 } 1072 return $term; 1073 } 1074 1075 $args = array( 1076 'get' => 'all', 1077 'number' => 1, 1078 'taxonomy' => $taxonomy, 1079 'update_term_meta_cache' => false, 1080 'orderby' => 'none', 1081 'suppress_filter' => true, 1082 ); 1083 1084 switch ( $field ) { 1085 case 'slug': 1086 $args['slug'] = $value; 1087 break; 1088 case 'name': 1089 $args['name'] = $value; 1090 break; 1091 case 'term_taxonomy_id': 1092 $args['term_taxonomy_id'] = $value; 1093 unset( $args['taxonomy'] ); 1094 break; 1095 default: 1096 return false; 1097 } 1098 1099 $terms = get_terms( $args ); 1100 if ( is_wp_error( $terms ) || empty( $terms ) ) { 1101 return false; 1102 } 1103 1104 $term = array_shift( $terms ); 1105 1106 // In the case of 'term_taxonomy_id', override the provided `$taxonomy` with whatever we find in the DB. 1107 if ( 'term_taxonomy_id' === $field ) { 1108 $taxonomy = $term->taxonomy; 1109 } 1110 1111 return get_term( $term, $taxonomy, $output, $filter ); 1112 } 1113 1114 /** 1115 * Merges all term children into a single array of their IDs. 1116 * 1117 * This recursive function will merge all of the children of $term into the same 1118 * array of term IDs. Only useful for taxonomies which are hierarchical. 1119 * 1120 * Will return an empty array if $term does not exist in $taxonomy. 1121 * 1122 * @since 2.3.0 1123 * 1124 * @param int $term_id ID of term to get children. 1125 * @param string $taxonomy Taxonomy name. 1126 * @return array|WP_Error List of term IDs. WP_Error returned if `$taxonomy` does not exist. 1127 */ 1128 function get_term_children( $term_id, $taxonomy ) { 1129 if ( ! taxonomy_exists( $taxonomy ) ) { 1130 return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy.' ) ); 1131 } 1132 1133 $term_id = (int) $term_id; 1134 1135 $terms = _get_term_hierarchy( $taxonomy ); 1136 1137 if ( ! isset( $terms[ $term_id ] ) ) { 1138 return array(); 1139 } 1140 1141 $children = $terms[ $term_id ]; 1142 1143 foreach ( (array) $terms[ $term_id ] as $child ) { 1144 if ( $term_id === $child ) { 1145 continue; 1146 } 1147 1148 if ( isset( $terms[ $child ] ) ) { 1149 $children = array_merge( $children, get_term_children( $child, $taxonomy ) ); 1150 } 1151 } 1152 1153 return $children; 1154 } 1155 1156 /** 1157 * Gets sanitized term field. 1158 * 1159 * The function is for contextual reasons and for simplicity of usage. 1160 * 1161 * @since 2.3.0 1162 * @since 4.4.0 The `$taxonomy` parameter was made optional. `$term` can also now accept a WP_Term object. 1163 * 1164 * @see sanitize_term_field() 1165 * 1166 * @param string $field Term field to fetch. 1167 * @param int|WP_Term $term Term ID or object. 1168 * @param string $taxonomy Optional. Taxonomy name. Default empty. 1169 * @param string $context Optional. How to sanitize term fields. Look at sanitize_term_field() for available options. 1170 * Default 'display'. 1171 * @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. 1172 */ 1173 function get_term_field( $field, $term, $taxonomy = '', $context = 'display' ) { 1174 $term = get_term( $term, $taxonomy ); 1175 if ( is_wp_error( $term ) ) { 1176 return $term; 1177 } 1178 1179 if ( ! is_object( $term ) ) { 1180 return ''; 1181 } 1182 1183 if ( ! isset( $term->$field ) ) { 1184 return ''; 1185 } 1186 1187 return sanitize_term_field( $field, $term->$field, $term->term_id, $term->taxonomy, $context ); 1188 } 1189 1190 /** 1191 * Sanitizes term for editing. 1192 * 1193 * Return value is sanitize_term() and usage is for sanitizing the term for 1194 * editing. Function is for contextual and simplicity. 1195 * 1196 * @since 2.3.0 1197 * 1198 * @param int|object $id Term ID or object. 1199 * @param string $taxonomy Taxonomy name. 1200 * @return string|int|null|WP_Error Will return empty string if $term is not an object. 1201 */ 1202 function get_term_to_edit( $id, $taxonomy ) { 1203 $term = get_term( $id, $taxonomy ); 1204 1205 if ( is_wp_error( $term ) ) { 1206 return $term; 1207 } 1208 1209 if ( ! is_object( $term ) ) { 1210 return ''; 1211 } 1212 1213 return sanitize_term( $term, $taxonomy, 'edit' ); 1214 } 1215 1216 /** 1217 * Retrieves the terms in a given taxonomy or list of taxonomies. 1218 * 1219 * You can fully inject any customizations to the query before it is sent, as 1220 * well as control the output with a filter. 1221 * 1222 * The return type varies depending on the value passed to `$args['fields']`. See 1223 * WP_Term_Query::get_terms() for details. In all cases, a `WP_Error` object will 1224 * be returned if an invalid taxonomy is requested. 1225 * 1226 * The {@see 'get_terms'} filter will be called when the cache has the term and will 1227 * pass the found term along with the array of $taxonomies and array of $args. 1228 * This filter is also called before the array of terms is passed and will pass 1229 * the array of terms, along with the $taxonomies and $args. 1230 * 1231 * The {@see 'list_terms_exclusions'} filter passes the compiled exclusions along with 1232 * the $args. 1233 * 1234 * The {@see 'get_terms_orderby'} filter passes the `ORDER BY` clause for the query 1235 * along with the $args array. 1236 * 1237 * Prior to 4.5.0, the first parameter of `get_terms()` was a taxonomy or list of taxonomies: 1238 * 1239 * $terms = get_terms( 'post_tag', array( 1240 * 'hide_empty' => false, 1241 * ) ); 1242 * 1243 * Since 4.5.0, taxonomies should be passed via the 'taxonomy' argument in the `$args` array: 1244 * 1245 * $terms = get_terms( array( 1246 * 'taxonomy' => 'post_tag', 1247 * 'hide_empty' => false, 1248 * ) ); 1249 * 1250 * @since 2.3.0 1251 * @since 4.2.0 Introduced 'name' and 'childless' parameters. 1252 * @since 4.4.0 Introduced the ability to pass 'term_id' as an alias of 'id' for the `orderby` parameter. 1253 * Introduced the 'meta_query' and 'update_term_meta_cache' parameters. Converted to return 1254 * a list of WP_Term objects. 1255 * @since 4.5.0 Changed the function signature so that the `$args` array can be provided as the first parameter. 1256 * Introduced 'meta_key' and 'meta_value' parameters. Introduced the ability to order results by metadata. 1257 * @since 4.8.0 Introduced 'suppress_filter' parameter. 1258 * 1259 * @internal The `$deprecated` parameter is parsed for backward compatibility only. 1260 * 1261 * @param array|string $args Optional. Array or string of arguments. See WP_Term_Query::__construct() 1262 * for information on accepted arguments. Default empty array. 1263 * @param array|string $deprecated Optional. Argument array, when using the legacy function parameter format. 1264 * If present, this parameter will be interpreted as `$args`, and the first 1265 * function parameter will be parsed as a taxonomy or array of taxonomies. 1266 * Default empty. 1267 * @return WP_Term[]|int[]|string[]|string|WP_Error Array of terms, a count thereof as a numeric string, 1268 * or WP_Error if any of the taxonomies do not exist. 1269 * See the function description for more information. 1270 */ 1271 function get_terms( $args = array(), $deprecated = '' ) { 1272 $term_query = new WP_Term_Query(); 1273 1274 $defaults = array( 1275 'suppress_filter' => false, 1276 ); 1277 1278 /* 1279 * Legacy argument format ($taxonomy, $args) takes precedence. 1280 * 1281 * We detect legacy argument format by checking if 1282 * (a) a second non-empty parameter is passed, or 1283 * (b) the first parameter shares no keys with the default array (ie, it's a list of taxonomies) 1284 */ 1285 $_args = wp_parse_args( $args ); 1286 $key_intersect = array_intersect_key( $term_query->query_var_defaults, (array) $_args ); 1287 $do_legacy_args = $deprecated || empty( $key_intersect ); 1288 1289 if ( $do_legacy_args ) { 1290 $taxonomies = (array) $args; 1291 $args = wp_parse_args( $deprecated, $defaults ); 1292 $args['taxonomy'] = $taxonomies; 1293 } else { 1294 $args = wp_parse_args( $args, $defaults ); 1295 if ( isset( $args['taxonomy'] ) && null !== $args['taxonomy'] ) { 1296 $args['taxonomy'] = (array) $args['taxonomy']; 1297 } 1298 } 1299 1300 if ( ! empty( $args['taxonomy'] ) ) { 1301 foreach ( $args['taxonomy'] as $taxonomy ) { 1302 if ( ! taxonomy_exists( $taxonomy ) ) { 1303 return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy.' ) ); 1304 } 1305 } 1306 } 1307 1308 // Don't pass suppress_filter to WP_Term_Query. 1309 $suppress_filter = $args['suppress_filter']; 1310 unset( $args['suppress_filter'] ); 1311 1312 $terms = $term_query->query( $args ); 1313 1314 // Count queries are not filtered, for legacy reasons. 1315 if ( ! is_array( $terms ) ) { 1316 return $terms; 1317 } 1318 1319 if ( $suppress_filter ) { 1320 return $terms; 1321 } 1322 1323 /** 1324 * Filters the found terms. 1325 * 1326 * @since 2.3.0 1327 * @since 4.6.0 Added the `$term_query` parameter. 1328 * 1329 * @param array $terms Array of found terms. 1330 * @param array|null $taxonomies An array of taxonomies if known. 1331 * @param array $args An array of get_terms() arguments. 1332 * @param WP_Term_Query $term_query The WP_Term_Query object. 1333 */ 1334 return apply_filters( 'get_terms', $terms, $term_query->query_vars['taxonomy'], $term_query->query_vars, $term_query ); 1335 } 1336 1337 /** 1338 * Adds metadata to a term. 1339 * 1340 * @since 4.4.0 1341 * 1342 * @param int $term_id Term ID. 1343 * @param string $meta_key Metadata name. 1344 * @param mixed $meta_value Metadata value. Must be serializable if non-scalar. 1345 * @param bool $unique Optional. Whether the same key should not be added. 1346 * Default false. 1347 * @return int|false|WP_Error Meta ID on success, false on failure. 1348 * WP_Error when term_id is ambiguous between taxonomies. 1349 */ 1350 function add_term_meta( $term_id, $meta_key, $meta_value, $unique = false ) { 1351 if ( wp_term_is_shared( $term_id ) ) { 1352 return new WP_Error( 'ambiguous_term_id', __( 'Term meta cannot be added to terms that are shared between taxonomies.' ), $term_id ); 1353 } 1354 1355 return add_metadata( 'term', $term_id, $meta_key, $meta_value, $unique ); 1356 } 1357 1358 /** 1359 * Removes metadata matching criteria from a term. 1360 * 1361 * @since 4.4.0 1362 * 1363 * @param int $term_id Term ID. 1364 * @param string $meta_key Metadata name. 1365 * @param mixed $meta_value Optional. Metadata value. If provided, 1366 * rows will only be removed that match the value. 1367 * Must be serializable if non-scalar. Default empty. 1368 * @return bool True on success, false on failure. 1369 */ 1370 function delete_term_meta( $term_id, $meta_key, $meta_value = '' ) { 1371 return delete_metadata( 'term', $term_id, $meta_key, $meta_value ); 1372 } 1373 1374 /** 1375 * Retrieves metadata for a term. 1376 * 1377 * @since 4.4.0 1378 * 1379 * @param int $term_id Term ID. 1380 * @param string $key Optional. The meta key to retrieve. By default, 1381 * returns data for all keys. Default empty. 1382 * @param bool $single Optional. Whether to return a single value. 1383 * This parameter has no effect if `$key` is not specified. 1384 * Default false. 1385 * @return mixed An array of values if `$single` is false. 1386 * The value of the meta field if `$single` is true. 1387 * False for an invalid `$term_id` (non-numeric, zero, or negative value). 1388 * An empty string if a valid but non-existing term ID is passed. 1389 */ 1390 function get_term_meta( $term_id, $key = '', $single = false ) { 1391 return get_metadata( 'term', $term_id, $key, $single ); 1392 } 1393 1394 /** 1395 * Updates term metadata. 1396 * 1397 * Use the `$prev_value` parameter to differentiate between meta fields with the same key and term ID. 1398 * 1399 * If the meta field for the term does not exist, it will be added. 1400 * 1401 * @since 4.4.0 1402 * 1403 * @param int $term_id Term ID. 1404 * @param string $meta_key Metadata key. 1405 * @param mixed $meta_value Metadata value. Must be serializable if non-scalar. 1406 * @param mixed $prev_value Optional. Previous value to check before updating. 1407 * If specified, only update existing metadata entries with 1408 * this value. Otherwise, update all entries. Default empty. 1409 * @return int|bool|WP_Error Meta ID if the key didn't exist. true on successful update, 1410 * false on failure or if the value passed to the function 1411 * is the same as the one that is already in the database. 1412 * WP_Error when term_id is ambiguous between taxonomies. 1413 */ 1414 function update_term_meta( $term_id, $meta_key, $meta_value, $prev_value = '' ) { 1415 if ( wp_term_is_shared( $term_id ) ) { 1416 return new WP_Error( 'ambiguous_term_id', __( 'Term meta cannot be added to terms that are shared between taxonomies.' ), $term_id ); 1417 } 1418 1419 return update_metadata( 'term', $term_id, $meta_key, $meta_value, $prev_value ); 1420 } 1421 1422 /** 1423 * Updates metadata cache for list of term IDs. 1424 * 1425 * Performs SQL query to retrieve all metadata for the terms matching `$term_ids` and stores them in the cache. 1426 * Subsequent calls to `get_term_meta()` will not need to query the database. 1427 * 1428 * @since 4.4.0 1429 * 1430 * @param array $term_ids List of term IDs. 1431 * @return array|false An array of metadata on success, false if there is nothing to update. 1432 */ 1433 function update_termmeta_cache( $term_ids ) { 1434 return update_meta_cache( 'term', $term_ids ); 1435 } 1436 1437 /** 1438 * Gets all meta data, including meta IDs, for the given term ID. 1439 * 1440 * @since 4.9.0 1441 * 1442 * @global wpdb $wpdb WordPress database abstraction object. 1443 * 1444 * @param int $term_id Term ID. 1445 * @return array|false Array with meta data, or false when the meta table is not installed. 1446 */ 1447 function has_term_meta( $term_id ) { 1448 $check = wp_check_term_meta_support_prefilter( null ); 1449 if ( null !== $check ) { 1450 return $check; 1451 } 1452 1453 global $wpdb; 1454 1455 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 ); 1456 } 1457 1458 /** 1459 * Registers a meta key for terms. 1460 * 1461 * @since 4.9.8 1462 * 1463 * @param string $taxonomy Taxonomy to register a meta key for. Pass an empty string 1464 * to register the meta key across all existing taxonomies. 1465 * @param string $meta_key The meta key to register. 1466 * @param array $args Data used to describe the meta key when registered. See 1467 * {@see register_meta()} for a list of supported arguments. 1468 * @return bool True if the meta key was successfully registered, false if not. 1469 */ 1470 function register_term_meta( $taxonomy, $meta_key, array $args ) { 1471 $args['object_subtype'] = $taxonomy; 1472 1473 return register_meta( 'term', $meta_key, $args ); 1474 } 1475 1476 /** 1477 * Unregisters a meta key for terms. 1478 * 1479 * @since 4.9.8 1480 * 1481 * @param string $taxonomy Taxonomy the meta key is currently registered for. Pass 1482 * an empty string if the meta key is registered across all 1483 * existing taxonomies. 1484 * @param string $meta_key The meta key to unregister. 1485 * @return bool True on success, false if the meta key was not previously registered. 1486 */ 1487 function unregister_term_meta( $taxonomy, $meta_key ) { 1488 return unregister_meta_key( 'term', $meta_key, $taxonomy ); 1489 } 1490 1491 /** 1492 * Determines whether a taxonomy term exists. 1493 * 1494 * Formerly is_term(), introduced in 2.3.0. 1495 * 1496 * For more information on this and similar theme functions, check out 1497 * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/ 1498 * Conditional Tags} article in the Theme Developer Handbook. 1499 * 1500 * @since 3.0.0 1501 * @since 6.0.0 Converted to use `get_terms()`. 1502 * 1503 * @global bool $_wp_suspend_cache_invalidation 1504 * 1505 * @param int|string $term The term to check. Accepts term ID, slug, or name. 1506 * @param string $taxonomy Optional. The taxonomy name to use. 1507 * @param int $parent Optional. ID of parent term under which to confine the exists search. 1508 * @return mixed Returns null if the term does not exist. 1509 * Returns the term ID if no taxonomy is specified and the term ID exists. 1510 * Returns an array of the term ID and the term taxonomy ID if the taxonomy is specified and the pairing exists. 1511 * Returns 0 if term ID 0 is passed to the function. 1512 */ 1513 function term_exists( $term, $taxonomy = '', $parent = null ) { 1514 global $_wp_suspend_cache_invalidation; 1515 1516 if ( null === $term ) { 1517 return null; 1518 } 1519 1520 $defaults = array( 1521 'get' => 'all', 1522 'fields' => 'ids', 1523 'number' => 1, 1524 'update_term_meta_cache' => false, 1525 'order' => 'ASC', 1526 'orderby' => 'term_id', 1527 'suppress_filter' => true, 1528 ); 1529 1530 // Ensure that while importing, queries are not cached. 1531 if ( ! empty( $_wp_suspend_cache_invalidation ) ) { 1532 // @todo Disable caching once #52710 is merged. 1533 $defaults['cache_domain'] = microtime(); 1534 } 1535 1536 if ( ! empty( $taxonomy ) ) { 1537 $defaults['taxonomy'] = $taxonomy; 1538 $defaults['fields'] = 'all'; 1539 } 1540 1541 /** 1542 * Filters default query arguments for checking if a term exists. 1543 * 1544 * @since 6.0.0 1545 * 1546 * @param array $defaults An array of arguments passed to get_terms(). 1547 * @param int|string $term The term to check. Accepts term ID, slug, or name. 1548 * @param string $taxonomy The taxonomy name to use. An empty string indicates 1549 * the search is against all taxonomies. 1550 * @param int|null $parent ID of parent term under which to confine the exists search. 1551 * Null indicates the search is unconfined. 1552 */ 1553 $defaults = apply_filters( 'term_exists_default_query_args', $defaults, $term, $taxonomy, $parent ); 1554 1555 if ( is_int( $term ) ) { 1556 if ( 0 === $term ) { 1557 return 0; 1558 } 1559 $args = wp_parse_args( array( 'include' => array( $term ) ), $defaults ); 1560 $terms = get_terms( $args ); 1561 } else { 1562 $term = trim( wp_unslash( $term ) ); 1563 if ( '' === $term ) { 1564 return null; 1565 } 1566 1567 if ( ! empty( $taxonomy ) && is_numeric( $parent ) ) { 1568 $defaults['parent'] = (int) $parent; 1569 } 1570 1571 $args = wp_parse_args( array( 'slug' => sanitize_title( $term ) ), $defaults ); 1572 $terms = get_terms( $args ); 1573 if ( empty( $terms ) || is_wp_error( $terms ) ) { 1574 $args = wp_parse_args( array( 'name' => $term ), $defaults ); 1575 $terms = get_terms( $args ); 1576 } 1577 } 1578 1579 if ( empty( $terms ) || is_wp_error( $terms ) ) { 1580 return null; 1581 } 1582 1583 $_term = array_shift( $terms ); 1584 1585 if ( ! empty( $taxonomy ) ) { 1586 return array( 1587 'term_id' => (string) $_term->term_id, 1588 'term_taxonomy_id' => (string) $_term->term_taxonomy_id, 1589 ); 1590 } 1591 1592 return (string) $_term; 1593 } 1594 1595 /** 1596 * Checks if a term is an ancestor of another term. 1597 * 1598 * You can use either an ID or the term object for both parameters. 1599 * 1600 * @since 3.4.0 1601 * 1602 * @param int|object $term1 ID or object to check if this is the parent term. 1603 * @param int|object $term2 The child term. 1604 * @param string $taxonomy Taxonomy name that $term1 and `$term2` belong to. 1605 * @return bool Whether `$term2` is a child of `$term1`. 1606 */ 1607 function term_is_ancestor_of( $term1, $term2, $taxonomy ) { 1608 if ( ! isset( $term1->term_id ) ) { 1609 $term1 = get_term( $term1, $taxonomy ); 1610 } 1611 if ( ! isset( $term2->parent ) ) { 1612 $term2 = get_term( $term2, $taxonomy ); 1613 } 1614 1615 if ( empty( $term1->term_id ) || empty( $term2->parent ) ) { 1616 return false; 1617 } 1618 if ( $term2->parent === $term1->term_id ) { 1619 return true; 1620 } 1621 1622 return term_is_ancestor_of( $term1, get_term( $term2->parent, $taxonomy ), $taxonomy ); 1623 } 1624 1625 /** 1626 * Sanitizes all term fields. 1627 * 1628 * Relies on sanitize_term_field() to sanitize the term. The difference is that 1629 * this function will sanitize **all** fields. The context is based 1630 * on sanitize_term_field(). 1631 * 1632 * The `$term` is expected to be either an array or an object. 1633 * 1634 * @since 2.3.0 1635 * 1636 * @param array|object $term The term to check. 1637 * @param string $taxonomy The taxonomy name to use. 1638 * @param string $context Optional. Context in which to sanitize the term. 1639 * Accepts 'raw', 'edit', 'db', 'display', 'rss', 1640 * 'attribute', or 'js'. Default 'display'. 1641 * @return array|object Term with all fields sanitized. 1642 */ 1643 function sanitize_term( $term, $taxonomy, $context = 'display' ) { 1644 $fields = array( 'term_id', 'name', 'description', 'slug', 'count', 'parent', 'term_group', 'term_taxonomy_id', 'object_id' ); 1645 1646 $do_object = is_object( $term ); 1647 1648 $term_id = $do_object ? $term->term_id : ( isset( $term['term_id'] ) ? $term['term_id'] : 0 ); 1649 1650 foreach ( (array) $fields as $field ) { 1651 if ( $do_object ) { 1652 if ( isset( $term->$field ) ) { 1653 $term->$field = sanitize_term_field( $field, $term->$field, $term_id, $taxonomy, $context ); 1654 } 1655 } else { 1656 if ( isset( $term[ $field ] ) ) { 1657 $term[ $field ] = sanitize_term_field( $field, $term[ $field ], $term_id, $taxonomy, $context ); 1658 } 1659 } 1660 } 1661 1662 if ( $do_object ) { 1663 $term->filter = $context; 1664 } else { 1665 $term['filter'] = $context; 1666 } 1667 1668 return $term; 1669 } 1670 1671 /** 1672 * Sanitizes the field value in the term based on the context. 1673 * 1674 * Passing a term field value through the function should be assumed to have 1675 * cleansed the value for whatever context the term field is going to be used. 1676 * 1677 * If no context or an unsupported context is given, then default filters will 1678 * be applied. 1679 * 1680 * There are enough filters for each context to support a custom filtering 1681 * without creating your own filter function. Simply create a function that 1682 * hooks into the filter you need. 1683 * 1684 * @since 2.3.0 1685 * 1686 * @param string $field Term field to sanitize. 1687 * @param string $value Search for this term value. 1688 * @param int $term_id Term ID. 1689 * @param string $taxonomy Taxonomy name. 1690 * @param string $context Context in which to sanitize the term field. 1691 * Accepts 'raw', 'edit', 'db', 'display', 'rss', 1692 * 'attribute', or 'js'. Default 'display'. 1693 * @return mixed Sanitized field. 1694 */ 1695 function sanitize_term_field( $field, $value, $term_id, $taxonomy, $context ) { 1696 $int_fields = array( 'parent', 'term_id', 'count', 'term_group', 'term_taxonomy_id', 'object_id' ); 1697 if ( in_array( $field, $int_fields, true ) ) { 1698 $value = (int) $value; 1699 if ( $value < 0 ) { 1700 $value = 0; 1701 } 1702 } 1703 1704 $context = strtolower( $context ); 1705 1706 if ( 'raw' === $context ) { 1707 return $value; 1708 } 1709 1710 if ( 'edit' === $context ) { 1711 1712 /** 1713 * Filters a term field to edit before it is sanitized. 1714 * 1715 * The dynamic portion of the hook name, `$field`, refers to the term field. 1716 * 1717 * @since 2.3.0 1718 * 1719 * @param mixed $value Value of the term field. 1720 * @param int $term_id Term ID. 1721 * @param string $taxonomy Taxonomy slug. 1722 */ 1723 $value = apply_filters( "edit_term_{$field}", $value, $term_id, $taxonomy ); 1724 1725 /** 1726 * Filters the taxonomy field to edit before it is sanitized. 1727 * 1728 * The dynamic portions of the filter name, `$taxonomy` and `$field`, refer 1729 * to the taxonomy slug and taxonomy field, respectively. 1730 * 1731 * @since 2.3.0 1732 * 1733 * @param mixed $value Value of the taxonomy field to edit. 1734 * @param int $term_id Term ID. 1735 */ 1736 $value = apply_filters( "edit_{$taxonomy}_{$field}", $value, $term_id ); 1737 1738 if ( 'description' === $field ) { 1739 $value = esc_html( $value ); // textarea_escaped 1740 } else { 1741 $value = esc_attr( $value ); 1742 } 1743 } elseif ( 'db' === $context ) { 1744 1745 /** 1746 * Filters a term field value before it is sanitized. 1747 * 1748 * The dynamic portion of the hook name, `$field`, refers to the term field. 1749 * 1750 * @since 2.3.0 1751 * 1752 * @param mixed $value Value of the term field. 1753 * @param string $taxonomy Taxonomy slug. 1754 */ 1755 $value = apply_filters( "pre_term_{$field}", $value, $taxonomy ); 1756 1757 /** 1758 * Filters a taxonomy field before it is sanitized. 1759 * 1760 * The dynamic portions of the filter name, `$taxonomy` and `$field`, refer 1761 * to the taxonomy slug and field name, respectively. 1762 * 1763 * @since 2.3.0 1764 * 1765 * @param mixed $value Value of the taxonomy field. 1766 */ 1767 $value = apply_filters( "pre_{$taxonomy}_{$field}", $value ); 1768 1769 // Back compat filters. 1770 if ( 'slug' === $field ) { 1771 /** 1772 * Filters the category nicename before it is sanitized. 1773 * 1774 * Use the {@see 'pre_$taxonomy_$field'} hook instead. 1775 * 1776 * @since 2.0.3 1777 * 1778 * @param string $value The category nicename. 1779 */ 1780 $value = apply_filters( 'pre_category_nicename', $value ); 1781 } 1782 } elseif ( 'rss' === $context ) { 1783 1784 /** 1785 * Filters the term field for use in RSS. 1786 * 1787 * The dynamic portion of the hook name, `$field`, refers to the term field. 1788 * 1789 * @since 2.3.0 1790 * 1791 * @param mixed $value Value of the term field. 1792 * @param string $taxonomy Taxonomy slug. 1793 */ 1794 $value = apply_filters( "term_{$field}_rss", $value, $taxonomy ); 1795 1796 /** 1797 * Filters the taxonomy field for use in RSS. 1798 * 1799 * The dynamic portions of the hook name, `$taxonomy`, and `$field`, refer 1800 * to the taxonomy slug and field name, respectively. 1801 * 1802 * @since 2.3.0 1803 * 1804 * @param mixed $value Value of the taxonomy field. 1805 */ 1806 $value = apply_filters( "{$taxonomy}_{$field}_rss", $value ); 1807 } else { 1808 // Use display filters by default. 1809 1810 /** 1811 * Filters the term field sanitized for display. 1812 * 1813 * The dynamic portion of the hook name, `$field`, refers to the term field name. 1814 * 1815 * @since 2.3.0 1816 * 1817 * @param mixed $value Value of the term field. 1818 * @param int $term_id Term ID. 1819 * @param string $taxonomy Taxonomy slug. 1820 * @param string $context Context to retrieve the term field value. 1821 */ 1822 $value = apply_filters( "term_{$field}", $value, $term_id, $taxonomy, $context ); 1823 1824 /** 1825 * Filters the taxonomy field sanitized for display. 1826 * 1827 * The dynamic portions of the filter name, `$taxonomy`, and `$field`, refer 1828 * to the taxonomy slug and taxonomy field, respectively. 1829 * 1830 * @since 2.3.0 1831 * 1832 * @param mixed $value Value of the taxonomy field. 1833 * @param int $term_id Term ID. 1834 * @param string $context Context to retrieve the taxonomy field value. 1835 */ 1836 $value = apply_filters( "{$taxonomy}_{$field}", $value, $term_id, $context ); 1837 } 1838 1839 if ( 'attribute' === $context ) { 1840 $value = esc_attr( $value ); 1841 } elseif ( 'js' === $context ) { 1842 $value = esc_js( $value ); 1843 } 1844 1845 // Restore the type for integer fields after esc_attr(). 1846 if ( in_array( $field, $int_fields, true ) ) { 1847 $value = (int) $value; 1848 } 1849 1850 return $value; 1851 } 1852 1853 /** 1854 * Counts how many terms are in taxonomy. 1855 * 1856 * Default $args is 'hide_empty' which can be 'hide_empty=true' or array('hide_empty' => true). 1857 * 1858 * @since 2.3.0 1859 * @since 5.6.0 Changed the function signature so that the `$args` array can be provided as the first parameter. 1860 * 1861 * @internal The `$deprecated` parameter is parsed for backward compatibility only. 1862 * 1863 * @param array|string $args Optional. Array of arguments that get passed to get_terms(). 1864 * Default empty array. 1865 * @param array|string $deprecated Optional. Argument array, when using the legacy function parameter format. 1866 * If present, this parameter will be interpreted as `$args`, and the first 1867 * function parameter will be parsed as a taxonomy or array of taxonomies. 1868 * Default empty. 1869 * @return string|WP_Error Numeric string containing the number of terms in that 1870 * taxonomy or WP_Error if the taxonomy does not exist. 1871 */ 1872 function wp_count_terms( $args = array(), $deprecated = '' ) { 1873 $use_legacy_args = false; 1874 1875 // Check whether function is used with legacy signature: `$taxonomy` and `$args`. 1876 if ( $args 1877 && ( is_string( $args ) && taxonomy_exists( $args ) 1878 || is_array( $args ) && wp_is_numeric_array( $args ) ) 1879 ) { 1880 $use_legacy_args = true; 1881 } 1882 1883 $defaults = array( 'hide_empty' => false ); 1884 1885 if ( $use_legacy_args ) { 1886 $defaults['taxonomy'] = $args; 1887 $args = $deprecated; 1888 } 1889 1890 $args = wp_parse_args( $args, $defaults ); 1891 1892 // Backward compatibility. 1893 if ( isset( $args['ignore_empty'] ) ) { 1894 $args['hide_empty'] = $args['ignore_empty']; 1895 unset( $args['ignore_empty'] ); 1896 } 1897 1898 $args['fields'] = 'count'; 1899 1900 return get_terms( $args ); 1901 } 1902 1903 /** 1904 * Unlinks the object from the taxonomy or taxonomies. 1905 * 1906 * Will remove all relationships between the object and any terms in 1907 * a particular taxonomy or taxonomies. Does not remove the term or 1908 * taxonomy itself. 1909 * 1910 * @since 2.3.0 1911 * 1912 * @param int $object_id The term object ID that refers to the term. 1913 * @param string|array $taxonomies List of taxonomy names or single taxonomy name. 1914 */ 1915 function wp_delete_object_term_relationships( $object_id, $taxonomies ) { 1916 $object_id = (int) $object_id; 1917 1918 if ( ! is_array( $taxonomies ) ) { 1919 $taxonomies = array( $taxonomies ); 1920 } 1921 1922 foreach ( (array) $taxonomies as $taxonomy ) { 1923 $term_ids = wp_get_object_terms( $object_id, $taxonomy, array( 'fields' => 'ids' ) ); 1924 $term_ids = array_map( 'intval', $term_ids ); 1925 wp_remove_object_terms( $object_id, $term_ids, $taxonomy ); 1926 } 1927 } 1928 1929 /** 1930 * Removes a term from the database. 1931 * 1932 * If the term is a parent of other terms, then the children will be updated to 1933 * that term's parent. 1934 * 1935 * Metadata associated with the term will be deleted. 1936 * 1937 * @since 2.3.0 1938 * 1939 * @global wpdb $wpdb WordPress database abstraction object. 1940 * 1941 * @param int $term Term ID. 1942 * @param string $taxonomy Taxonomy name. 1943 * @param array|string $args { 1944 * Optional. Array of arguments to override the default term ID. Default empty array. 1945 * 1946 * @type int $default The term ID to make the default term. This will only override 1947 * the terms found if there is only one term found. Any other and 1948 * the found terms are used. 1949 * @type bool $force_default Optional. Whether to force the supplied term as default to be 1950 * assigned even if the object was not going to be term-less. 1951 * Default false. 1952 * } 1953 * @return bool|int|WP_Error True on success, false if term does not exist. Zero on attempted 1954 * deletion of default Category. WP_Error if the taxonomy does not exist. 1955 */ 1956 function wp_delete_term( $term, $taxonomy, $args = array() ) { 1957 global $wpdb; 1958 1959 $term = (int) $term; 1960 1961 $ids = term_exists( $term, $taxonomy ); 1962 if ( ! $ids ) { 1963 return false; 1964 } 1965 if ( is_wp_error( $ids ) ) { 1966 return $ids; 1967 } 1968 1969 $tt_id = $ids['term_taxonomy_id']; 1970 1971 $defaults = array(); 1972 1973 if ( 'category' === $taxonomy ) { 1974 $defaults['default'] = (int) get_option( 'default_category' ); 1975 if ( $defaults['default'] === $term ) { 1976 return 0; // Don't delete the default category. 1977 } 1978 } 1979 1980 // Don't delete the default custom taxonomy term. 1981 $taxonomy_object = get_taxonomy( $taxonomy ); 1982 if ( ! empty( $taxonomy_object->default_term ) ) { 1983 $defaults['default'] = (int) get_option( 'default_term_' . $taxonomy ); 1984 if ( $defaults['default'] === $term ) { 1985 return 0; 1986 } 1987 } 1988 1989 $args = wp_parse_args( $args, $defaults ); 1990 1991 if ( isset( $args['default'] ) ) { 1992 $default = (int) $args['default']; 1993 if ( ! term_exists( $default, $taxonomy ) ) { 1994 unset( $default ); 1995 } 1996 } 1997 1998 if ( isset( $args['force_default'] ) ) { 1999 $force_default = $args['force_default']; 2000 } 2001 2002 /** 2003 * Fires when deleting a term, before any modifications are made to posts or terms. 2004 * 2005 * @since 4.1.0 2006 * 2007 * @param int $term Term ID. 2008 * @param string $taxonomy Taxonomy name. 2009 */ 2010 do_action( 'pre_delete_term', $term, $taxonomy ); 2011 2012 // Update children to point to new parent. 2013 if ( is_taxonomy_hierarchical( $taxonomy ) ) { 2014 $term_obj = get_term( $term, $taxonomy ); 2015 if ( is_wp_error( $term_obj ) ) { 2016 return $term_obj; 2017 } 2018 $parent = $term_obj->parent; 2019 2020 $edit_ids = $wpdb->get_results( "SELECT term_id, term_taxonomy_id FROM $wpdb->term_taxonomy WHERE `parent` = " . (int) $term_obj->term_id ); 2021 $edit_tt_ids = wp_list_pluck( $edit_ids, 'term_taxonomy_id' ); 2022 2023 /** 2024 * Fires immediately before a term to delete's children are reassigned a parent. 2025 * 2026 * @since 2.9.0 2027 * 2028 * @param array $edit_tt_ids An array of term taxonomy IDs for the given term. 2029 */ 2030 do_action( 'edit_term_taxonomies', $edit_tt_ids ); 2031 2032 $wpdb->update( $wpdb->term_taxonomy, compact( 'parent' ), array( 'parent' => $term_obj->term_id ) + compact( 'taxonomy' ) ); 2033 2034 // Clean the cache for all child terms. 2035 $edit_term_ids = wp_list_pluck( $edit_ids, 'term_id' ); 2036 clean_term_cache( $edit_term_ids, $taxonomy ); 2037 2038 /** 2039 * Fires immediately after a term to delete's children are reassigned a parent. 2040 * 2041 * @since 2.9.0 2042 * 2043 * @param array $edit_tt_ids An array of term taxonomy IDs for the given term. 2044 */ 2045 do_action( 'edited_term_taxonomies', $edit_tt_ids ); 2046 } 2047 2048 // Get the term before deleting it or its term relationships so we can pass to actions below. 2049 $deleted_term = get_term( $term, $taxonomy ); 2050 2051 $object_ids = (array) $wpdb->get_col( $wpdb->prepare( "SELECT object_id FROM $wpdb->term_relationships WHERE term_taxonomy_id = %d", $tt_id ) ); 2052 2053 foreach ( $object_ids as $object_id ) { 2054 if ( ! isset( $default ) ) { 2055 wp_remove_object_terms( $object_id, $term, $taxonomy ); 2056 continue; 2057 } 2058 2059 $terms = wp_get_object_terms( 2060 $object_id, 2061 $taxonomy, 2062 array( 2063 'fields' => 'ids', 2064 'orderby' => 'none', 2065 ) 2066 ); 2067 2068 if ( 1 === count( $terms ) && isset( $default ) ) { 2069 $terms = array( $default ); 2070 } else { 2071 $terms = array_diff( $terms, array( $term ) ); 2072 if ( isset( $default ) && isset( $force_default ) && $force_default ) { 2073 $terms = array_merge( $terms, array( $default ) ); 2074 } 2075 } 2076 2077 $terms = array_map( 'intval', $terms ); 2078 wp_set_object_terms( $object_id, $terms, $taxonomy ); 2079 } 2080 2081 // Clean the relationship caches for all object types using this term. 2082 $tax_object = get_taxonomy( $taxonomy ); 2083 foreach ( $tax_object->object_type as $object_type ) { 2084 clean_object_term_cache( $object_ids, $object_type ); 2085 } 2086 2087 $term_meta_ids = $wpdb->get_col( $wpdb->prepare( "SELECT meta_id FROM $wpdb->termmeta WHERE term_id = %d ", $term ) ); 2088 foreach ( $term_meta_ids as $mid ) { 2089 delete_metadata_by_mid( 'term', $mid ); 2090 } 2091 2092 /** 2093 * Fires immediately before a term taxonomy ID is deleted. 2094 * 2095 * @since 2.9.0 2096 * 2097 * @param int $tt_id Term taxonomy ID. 2098 */ 2099 do_action( 'delete_term_taxonomy', $tt_id ); 2100 2101 $wpdb->delete( $wpdb->term_taxonomy, array( 'term_taxonomy_id' => $tt_id ) ); 2102 2103 /** 2104 * Fires immediately after a term taxonomy ID is deleted. 2105 * 2106 * @since 2.9.0 2107 * 2108 * @param int $tt_id Term taxonomy ID. 2109 */ 2110 do_action( 'deleted_term_taxonomy', $tt_id ); 2111 2112 // Delete the term if no taxonomies use it. 2113 if ( ! $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->term_taxonomy WHERE term_id = %d", $term ) ) ) { 2114 $wpdb->delete( $wpdb->terms, array( 'term_id' => $term ) ); 2115 } 2116 2117 clean_term_cache( $term, $taxonomy ); 2118 2119 /** 2120 * Fires after a term is deleted from the database and the cache is cleaned. 2121 * 2122 * The {@see 'delete_$taxonomy'} hook is also available for targeting a specific 2123 * taxonomy. 2124 * 2125 * @since 2.5.0 2126 * @since 4.5.0 Introduced the `$object_ids` argument. 2127 * 2128 * @param int $term Term ID. 2129 * @param int $tt_id Term taxonomy ID. 2130 * @param string $taxonomy Taxonomy slug. 2131 * @param WP_Term $deleted_term Copy of the already-deleted term. 2132 * @param array $object_ids List of term object IDs. 2133 */ 2134 do_action( 'delete_term', $term, $tt_id, $taxonomy, $deleted_term, $object_ids ); 2135 2136 /** 2137 * Fires after a term in a specific taxonomy is deleted. 2138 * 2139 * The dynamic portion of the hook name, `$taxonomy`, refers to the specific 2140 * taxonomy the term belonged to. 2141 * 2142 * Possible hook names include: 2143 * 2144 * - `delete_category` 2145 * - `delete_post_tag` 2146 * 2147 * @since 2.3.0 2148 * @since 4.5.0 Introduced the `$object_ids` argument. 2149 * 2150 * @param int $term Term ID. 2151 * @param int $tt_id Term taxonomy ID. 2152 * @param WP_Term $deleted_term Copy of the already-deleted term. 2153 * @param array $object_ids List of term object IDs. 2154 */ 2155 do_action( "delete_{$taxonomy}", $term, $tt_id, $deleted_term, $object_ids ); 2156 2157 return true; 2158 } 2159 2160 /** 2161 * Deletes one existing category. 2162 * 2163 * @since 2.0.0 2164 * 2165 * @param int $cat_ID Category term ID. 2166 * @return bool|int|WP_Error Returns true if completes delete action; false if term doesn't exist; 2167 * Zero on attempted deletion of default Category; WP_Error object is also a possibility. 2168 */ 2169 function wp_delete_category( $cat_ID ) { 2170 return wp_delete_term( $cat_ID, 'category' ); 2171 } 2172 2173 /** 2174 * Retrieves the terms associated with the given object(s), in the supplied taxonomies. 2175 * 2176 * @since 2.3.0 2177 * @since 4.2.0 Added support for 'taxonomy', 'parent', and 'term_taxonomy_id' values of `$orderby`. 2178 * Introduced `$parent` argument. 2179 * @since 4.4.0 Introduced `$meta_query` and `$update_term_meta_cache` arguments. When `$fields` is 'all' or 2180 * 'all_with_object_id', an array of `WP_Term` objects will be returned. 2181 * @since 4.7.0 Refactored to use WP_Term_Query, and to support any WP_Term_Query arguments. 2182 * 2183 * @param int|int[] $object_ids The ID(s) of the object(s) to retrieve. 2184 * @param string|string[] $taxonomies The taxonomy names to retrieve terms from. 2185 * @param array|string $args See WP_Term_Query::__construct() for supported arguments. 2186 * @return WP_Term[]|WP_Error Array of terms or empty array if no terms found. 2187 * WP_Error if any of the taxonomies don't exist. 2188 */ 2189 function wp_get_object_terms( $object_ids, $taxonomies, $args = array() ) { 2190 if ( empty( $object_ids ) || empty( $taxonomies ) ) { 2191 return array(); 2192 } 2193 2194 if ( ! is_array( $taxonomies ) ) { 2195 $taxonomies = array( $taxonomies ); 2196 } 2197 2198 foreach ( $taxonomies as $taxonomy ) { 2199 if ( ! taxonomy_exists( $taxonomy ) ) { 2200 return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy.' ) ); 2201 } 2202 } 2203 2204 if ( ! is_array( $object_ids ) ) { 2205 $object_ids = array( $object_ids ); 2206 } 2207 $object_ids = array_map( 'intval', $object_ids ); 2208 2209 $args = wp_parse_args( $args ); 2210 2211 /** 2212 * Filters arguments for retrieving object terms. 2213 * 2214 * @since 4.9.0 2215 * 2216 * @param array $args An array of arguments for retrieving terms for the given object(s). 2217 * See {@see wp_get_object_terms()} for details. 2218 * @param int[] $object_ids Array of object IDs. 2219 * @param string[] $taxonomies Array of taxonomy names to retrieve terms from. 2220 */ 2221 $args = apply_filters( 'wp_get_object_terms_args', $args, $object_ids, $taxonomies ); 2222 2223 /* 2224 * When one or more queried taxonomies is registered with an 'args' array, 2225 * those params override the `$args` passed to this function. 2226 */ 2227 $terms = array(); 2228 if ( count( $taxonomies ) > 1 ) { 2229 foreach ( $taxonomies as $index => $taxonomy ) { 2230 $t = get_taxonomy( $taxonomy ); 2231 if ( isset( $t->args ) && is_array( $t->args ) && array_merge( $args, $t->args ) != $args ) { 2232 unset( $taxonomies[ $index ] ); 2233 $terms = array_merge( $terms, wp_get_object_terms( $object_ids, $taxonomy, array_merge( $args, $t->args ) ) ); 2234 } 2235 } 2236 } else { 2237 $t = get_taxonomy( $taxonomies[0] ); 2238 if ( isset( $t->args ) && is_array( $t->args ) ) { 2239 $args = array_merge( $args, $t->args ); 2240 } 2241 } 2242 2243 $args['taxonomy'] = $taxonomies; 2244 $args['object_ids'] = $object_ids; 2245 2246 // Taxonomies registered without an 'args' param are handled here. 2247 if ( ! empty( $taxonomies ) ) { 2248 $terms_from_remaining_taxonomies = get_terms( $args ); 2249 2250 // Array keys should be preserved for values of $fields that use term_id for keys. 2251 if ( ! empty( $args['fields'] ) && 0 === strpos( $args['fields'], 'id=>' ) ) { 2252 $terms = $terms + $terms_from_remaining_taxonomies; 2253 } else { 2254 $terms = array_merge( $terms, $terms_from_remaining_taxonomies ); 2255 } 2256 } 2257 2258 /** 2259 * Filters the terms for a given object or objects. 2260 * 2261 * @since 4.2.0 2262 * 2263 * @param WP_Term[] $terms Array of terms for the given object or objects. 2264 * @param int[] $object_ids Array of object IDs for which terms were retrieved. 2265 * @param string[] $taxonomies Array of taxonomy names from which terms were retrieved. 2266 * @param array $args Array of arguments for retrieving terms for the given 2267 * object(s). See wp_get_object_terms() for details. 2268 */ 2269 $terms = apply_filters( 'get_object_terms', $terms, $object_ids, $taxonomies, $args ); 2270 2271 $object_ids = implode( ',', $object_ids ); 2272 $taxonomies = "'" . implode( "', '", array_map( 'esc_sql', $taxonomies ) ) . "'"; 2273 2274 /** 2275 * Filters the terms for a given object or objects. 2276 * 2277 * The `$taxonomies` parameter passed to this filter is formatted as a SQL fragment. The 2278 * {@see 'get_object_terms'} filter is recommended as an alternative. 2279 * 2280 * @since 2.8.0 2281 * 2282 * @param WP_Term[] $terms Array of terms for the given object or objects. 2283 * @param string $object_ids Comma separated list of object IDs for which terms were retrieved. 2284 * @param string $taxonomies SQL fragment of taxonomy names from which terms were retrieved. 2285 * @param array $args Array of arguments for retrieving terms for the given 2286 * object(s). See wp_get_object_terms() for details. 2287 */ 2288 return apply_filters( 'wp_get_object_terms', $terms, $object_ids, $taxonomies, $args ); 2289 } 2290 2291 /** 2292 * Adds a new term to the database. 2293 * 2294 * A non-existent term is inserted in the following sequence: 2295 * 1. The term is added to the term table, then related to the taxonomy. 2296 * 2. If everything is correct, several actions are fired. 2297 * 3. The 'term_id_filter' is evaluated. 2298 * 4. The term cache is cleaned. 2299 * 5. Several more actions are fired. 2300 * 6. An array is returned containing the `term_id` and `term_taxonomy_id`. 2301 * 2302 * If the 'slug' argument is not empty, then it is checked to see if the term 2303 * is invalid. If it is not a valid, existing term, it is added and the term_id 2304 * is given. 2305 * 2306 * If the taxonomy is hierarchical, and the 'parent' argument is not empty, 2307 * the term is inserted and the term_id will be given. 2308 * 2309 * Error handling: 2310 * If `$taxonomy` does not exist or `$term` is empty, 2311 * a WP_Error object will be returned. 2312 * 2313 * If the term already exists on the same hierarchical level, 2314 * or the term slug and name are not unique, a WP_Error object will be returned. 2315 * 2316 * @global wpdb $wpdb WordPress database abstraction object. 2317 * 2318 * @since 2.3.0 2319 * 2320 * @param string $term The term name to add. 2321 * @param string $taxonomy The taxonomy to which to add the term. 2322 * @param array|string $args { 2323 * Optional. Array or query string of arguments for inserting a term. 2324 * 2325 * @type string $alias_of Slug of the term to make this term an alias of. 2326 * Default empty string. Accepts a term slug. 2327 * @type string $description The term description. Default empty string. 2328 * @type int $parent The id of the parent term. Default 0. 2329 * @type string $slug The term slug to use. Default empty string. 2330 * } 2331 * @return array|WP_Error { 2332 * An array of the new term data, WP_Error otherwise. 2333 * 2334 * @type int $term_id The new term ID. 2335 * @type int|string $term_taxonomy_id The new term taxonomy ID. Can be a numeric string. 2336 * } 2337 */ 2338 function wp_insert_term( $term, $taxonomy, $args = array() ) { 2339 global $wpdb; 2340 2341 if ( ! taxonomy_exists( $taxonomy ) ) { 2342 return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy.' ) ); 2343 } 2344 2345 /** 2346 * Filters a term before it is sanitized and inserted into the database. 2347 * 2348 * @since 3.0.0 2349 * 2350 * @param string|WP_Error $term The term name to add, or a WP_Error object if there's an error. 2351 * @param string $taxonomy Taxonomy slug. 2352 */ 2353 $term = apply_filters( 'pre_insert_term', $term, $taxonomy ); 2354 2355 if ( is_wp_error( $term ) ) { 2356 return $term; 2357 } 2358 2359 if ( is_int( $term ) && 0 === $term ) { 2360 return new WP_Error( 'invalid_term_id', __( 'Invalid term ID.' ) ); 2361 } 2362 2363 if ( '' === trim( $term ) ) { 2364 return new WP_Error( 'empty_term_name', __( 'A name is required for this term.' ) ); 2365 } 2366 2367 $defaults = array( 2368 'alias_of' => '', 2369 'description' => '', 2370 'parent' => 0, 2371 'slug' => '', 2372 ); 2373 $args = wp_parse_args( $args, $defaults ); 2374 2375 if ( (int) $args['parent'] > 0 && ! term_exists( (int) $args['parent'] ) ) { 2376 return new WP_Error( 'missing_parent', __( 'Parent term does not exist.' ) ); 2377 } 2378 2379 $args['name'] = $term; 2380 $args['taxonomy'] = $taxonomy; 2381 2382 // Coerce null description to strings, to avoid database errors. 2383 $args['description'] = (string) $args['description']; 2384 2385 $args = sanitize_term( $args, $taxonomy, 'db' ); 2386 2387 // expected_slashed ($name) 2388 $name = wp_unslash( $args['name'] ); 2389 $description = wp_unslash( $args['description'] ); 2390 $parent = (int) $args['parent']; 2391 2392 $slug_provided = ! empty( $args['slug'] ); 2393 if ( ! $slug_provided ) { 2394 $slug = sanitize_title( $name ); 2395 } else { 2396 $slug = $args['slug']; 2397 } 2398 2399 $term_group = 0; 2400 if ( $args['alias_of'] ) { 2401 $alias = get_term_by( 'slug', $args['alias_of'], $taxonomy ); 2402 if ( ! empty( $alias->term_group ) ) { 2403 // The alias we want is already in a group, so let's use that one. 2404 $term_group = $alias->term_group; 2405 } elseif ( ! empty( $alias->term_id ) ) { 2406 /* 2407 * The alias is not in a group, so we create a new one 2408 * and add the alias to it. 2409 */ 2410 $term_group = $wpdb->get_var( "SELECT MAX(term_group) FROM $wpdb->terms" ) + 1; 2411 2412 wp_update_term( 2413 $alias->term_id, 2414 $taxonomy, 2415 array( 2416 'term_group' => $term_group, 2417 ) 2418 ); 2419 } 2420 } 2421 2422 /* 2423 * Prevent the creation of terms with duplicate names at the same level of a taxonomy hierarchy, 2424 * unless a unique slug has been explicitly provided. 2425 */ 2426 $name_matches = get_terms( 2427 array( 2428 'taxonomy' => $taxonomy, 2429 'name' => $name, 2430 'hide_empty' => false, 2431 'parent' => $args['parent'], 2432 'update_term_meta_cache' => false, 2433 ) 2434 ); 2435 2436 /* 2437 * The `name` match in `get_terms()` doesn't differentiate accented characters, 2438 * so we do a stricter comparison here. 2439 */ 2440 $name_match = null; 2441 if ( $name_matches ) { 2442 foreach ( $name_matches as $_match ) { 2443 if ( strtolower( $name ) === strtolower( $_match->name ) ) { 2444 $name_match = $_match; 2445 break; 2446 } 2447 } 2448 } 2449 2450 if ( $name_match ) { 2451 $slug_match = get_term_by( 'slug', $slug, $taxonomy ); 2452 if ( ! $slug_provided || $name_match->slug === $slug || $slug_match ) { 2453 if ( is_taxonomy_hierarchical( $taxonomy ) ) { 2454 $siblings = get_terms( 2455 array( 2456 'taxonomy' => $taxonomy, 2457 'get' => 'all', 2458 'parent' => $parent, 2459 'update_term_meta_cache' => false, 2460 ) 2461 ); 2462 2463 $existing_term = null; 2464 $sibling_names = wp_list_pluck( $siblings, 'name' ); 2465 $sibling_slugs = wp_list_pluck( $siblings, 'slug' ); 2466 2467 if ( ( ! $slug_provided || $name_match->slug === $slug ) && in_array( $name, $sibling_names, true ) ) { 2468 $existing_term = $name_match; 2469 } elseif ( $slug_match && in_array( $slug, $sibling_slugs, true ) ) { 2470 $existing_term = $slug_match; 2471 } 2472 2473 if ( $existing_term ) { 2474 return new WP_Error( 'term_exists', __( 'A term with the name provided already exists with this parent.' ), $existing_term->term_id ); 2475 } 2476 } else { 2477 return new WP_Error( 'term_exists', __( 'A term with the name provided already exists in this taxonomy.' ), $name_match->term_id ); 2478 } 2479 } 2480 } 2481 2482 $slug = wp_unique_term_slug( $slug, (object) $args ); 2483 2484 $data = compact( 'name', 'slug', 'term_group' ); 2485 2486 /** 2487 * Filters term data before it is inserted into the database. 2488 * 2489 * @since 4.7.0 2490 * 2491 * @param array $data Term data to be inserted. 2492 * @param string $taxonomy Taxonomy slug. 2493 * @param array $args Arguments passed to wp_insert_term(). 2494 */ 2495 $data = apply_filters( 'wp_insert_term_data', $data, $taxonomy, $args ); 2496 2497 if ( false === $wpdb->insert( $wpdb->terms, $data ) ) { 2498 return new WP_Error( 'db_insert_error', __( 'Could not insert term into the database.' ), $wpdb->last_error ); 2499 } 2500 2501 $term_id = (int) $wpdb->insert_id; 2502 2503 // Seems unreachable. However, is used in the case that a term name is provided, which sanitizes to an empty string. 2504 if ( empty( $slug ) ) { 2505 $slug = sanitize_title( $slug, $term_id ); 2506 2507 /** This action is documented in wp-includes/taxonomy.php */ 2508 do_action( 'edit_terms', $term_id, $taxonomy ); 2509 $wpdb->update( $wpdb->terms, compact( 'slug' ), compact( 'term_id' ) ); 2510 2511 /** This action is documented in wp-includes/taxonomy.php */ 2512 do_action( 'edited_terms', $term_id, $taxonomy ); 2513 } 2514 2515 $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 ) ); 2516 2517 if ( ! empty( $tt_id ) ) { 2518 return array( 2519 'term_id' => $term_id, 2520 'term_taxonomy_id' => $tt_id, 2521 ); 2522 } 2523 2524 if ( false === $wpdb->insert( $wpdb->term_taxonomy, compact( 'term_id', 'taxonomy', 'description', 'parent' ) + array( 'count' => 0 ) ) ) { 2525 return new WP_Error( 'db_insert_error', __( 'Could not insert term taxonomy into the database.' ), $wpdb->last_error ); 2526 } 2527 2528 $tt_id = (int) $wpdb->insert_id; 2529 2530 /* 2531 * Sanity check: if we just created a term with the same parent + taxonomy + slug but a higher term_id than 2532 * an existing term, then we have unwittingly created a duplicate term. Delete the dupe, and use the term_id 2533 * and term_taxonomy_id of the older term instead. Then return out of the function so that the "create" hooks 2534 * are not fired. 2535 */ 2536 $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 ) ); 2537 2538 /** 2539 * Filters the duplicate term check that takes place during term creation. 2540 * 2541 * Term parent + taxonomy + slug combinations are meant to be unique, and wp_insert_term() 2542 * performs a last-minute confirmation of this uniqueness before allowing a new term 2543 * to be created. Plugins with different uniqueness requirements may use this filter 2544 * to bypass or modify the duplicate-term check. 2545 * 2546 * @since 5.1.0 2547 * 2548 * @param object $duplicate_term Duplicate term row from terms table, if found. 2549 * @param string $term Term being inserted. 2550 * @param string $taxonomy Taxonomy name. 2551 * @param array $args Term arguments passed to the function. 2552 * @param int $tt_id term_taxonomy_id for the newly created term. 2553 */ 2554 $duplicate_term = apply_filters( 'wp_insert_term_duplicate_term_check', $duplicate_term, $term, $taxonomy, $args, $tt_id ); 2555 2556 if ( $duplicate_term ) { 2557 $wpdb->delete( $wpdb->terms, array( 'term_id' => $term_id ) ); 2558 $wpdb->delete( $wpdb->term_taxonomy, array( 'term_taxonomy_id' => $tt_id ) ); 2559 2560 $term_id = (int) $duplicate_term->term_id; 2561 $tt_id = (int) $duplicate_term->term_taxonomy_id; 2562 2563 clean_term_cache( $term_id, $taxonomy ); 2564 return array( 2565 'term_id' => $term_id, 2566 'term_taxonomy_id' => $tt_id, 2567 ); 2568 } 2569 2570 /** 2571 * Fires immediately after a new term is created, before the term cache is cleaned. 2572 * 2573 * The {@see 'create_$taxonomy'} hook is also available for targeting a specific 2574 * taxonomy. 2575 * 2576 * @since 2.3.0 2577 * 2578 * @param int $term_id Term ID. 2579 * @param int $tt_id Term taxonomy ID. 2580 * @param string $taxonomy Taxonomy slug. 2581 */ 2582 do_action( 'create_term', $term_id, $tt_id, $taxonomy ); 2583 2584 /** 2585 * Fires after a new term is created for a specific taxonomy. 2586 * 2587 * The dynamic portion of the hook name, `$taxonomy`, refers 2588 * to the slug of the taxonomy the term was created for. 2589 * 2590 * Possible hook names include: 2591 * 2592 * - `create_category` 2593 * - `create_post_tag` 2594 * 2595 * @since 2.3.0 2596 * 2597 * @param int $term_id Term ID. 2598 * @param int $tt_id Term taxonomy ID. 2599 */ 2600 do_action( "create_{$taxonomy}", $term_id, $tt_id ); 2601 2602 /** 2603 * Filters the term ID after a new term is created. 2604 * 2605 * @since 2.3.0 2606 * 2607 * @param int $term_id Term ID. 2608 * @param int $tt_id Term taxonomy ID. 2609 */ 2610 $term_id = apply_filters( 'term_id_filter', $term_id, $tt_id ); 2611 2612 clean_term_cache( $term_id, $taxonomy ); 2613 2614 /** 2615 * Fires after a new term is created, and after the term cache has been cleaned. 2616 * 2617 * The {@see 'created_$taxonomy'} hook is also available for targeting a specific 2618 * taxonomy. 2619 * 2620 * @since 2.3.0 2621 * 2622 * @param int $term_id Term ID. 2623 * @param int $tt_id Term taxonomy ID. 2624 * @param string $taxonomy Taxonomy slug. 2625 */ 2626 do_action( 'created_term', $term_id, $tt_id, $taxonomy ); 2627 2628 /** 2629 * Fires after a new term in a specific taxonomy is created, and after the term 2630 * cache has been cleaned. 2631 * 2632 * The dynamic portion of the hook name, `$taxonomy`, refers to the taxonomy slug. 2633 * 2634 * Possible hook names include: 2635 * 2636 * - `created_category` 2637 * - `created_post_tag` 2638 * 2639 * @since 2.3.0 2640 * 2641 * @param int $term_id Term ID. 2642 * @param int $tt_id Term taxonomy ID. 2643 */ 2644 do_action( "created_{$taxonomy}", $term_id, $tt_id ); 2645 2646 /** 2647 * Fires after a term has been saved, and the term cache has been cleared. 2648 * 2649 * The {@see 'saved_$taxonomy'} hook is also available for targeting a specific 2650 * taxonomy. 2651 * 2652 * @since 5.5.0 2653 * 2654 * @param int $term_id Term ID. 2655 * @param int $tt_id Term taxonomy ID. 2656 * @param string $taxonomy Taxonomy slug. 2657 * @param bool $update Whether this is an existing term being updated. 2658 */ 2659 do_action( 'saved_term', $term_id, $tt_id, $taxonomy, false ); 2660 2661 /** 2662 * Fires after a term in a specific taxonomy has been saved, and the term 2663 * cache has been cleared. 2664 * 2665 * The dynamic portion of the hook name, `$taxonomy`, refers to the taxonomy slug. 2666 * 2667 * Possible hook names include: 2668 * 2669 * - `saved_category` 2670 * - `saved_post_tag` 2671 * 2672 * @since 5.5.0 2673 * 2674 * @param int $term_id Term ID. 2675 * @param int $tt_id Term taxonomy ID. 2676 * @param bool $update Whether this is an existing term being updated. 2677 */ 2678 do_action( "saved_{$taxonomy}", $term_id, $tt_id, false ); 2679 2680 return array( 2681 'term_id' => $term_id, 2682 'term_taxonomy_id' => $tt_id, 2683 ); 2684 } 2685 2686 /** 2687 * Creates term and taxonomy relationships. 2688 * 2689 * Relates an object (post, link, etc.) to a term and taxonomy type. Creates the 2690 * term and taxonomy relationship if it doesn't already exist. Creates a term if 2691 * it doesn't exist (using the slug). 2692 * 2693 * A relationship means that the term is grouped in or belongs to the taxonomy. 2694 * A term has no meaning until it is given context by defining which taxonomy it 2695 * exists under. 2696 * 2697 * @since 2.3.0 2698 * 2699 * @global wpdb $wpdb WordPress database abstraction object. 2700 * 2701 * @param int $object_id The object to relate to. 2702 * @param string|int|array $terms A single term slug, single term ID, or array of either term slugs or IDs. 2703 * Will replace all existing related terms in this taxonomy. Passing an 2704 * empty value will remove all related terms. 2705 * @param string $taxonomy The context in which to relate the term to the object. 2706 * @param bool $append Optional. If false will delete difference of terms. Default false. 2707 * @return array|WP_Error Term taxonomy IDs of the affected terms or WP_Error on failure. 2708 */ 2709 function wp_set_object_terms( $object_id, $terms, $taxonomy, $append = false ) { 2710 global $wpdb; 2711 2712 $object_id = (int) $object_id; 2713 2714 if ( ! taxonomy_exists( $taxonomy ) ) { 2715 return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy.' ) ); 2716 } 2717 2718 if ( ! is_array( $terms ) ) { 2719 $terms = array( $terms ); 2720 } 2721 2722 if ( ! $append ) { 2723 $old_tt_ids = wp_get_object_terms( 2724 $object_id, 2725 $taxonomy, 2726 array( 2727 'fields' => 'tt_ids', 2728 'orderby' => 'none', 2729 'update_term_meta_cache' => false, 2730 ) 2731 ); 2732 } else { 2733 $old_tt_ids = array(); 2734 } 2735 2736 $tt_ids = array(); 2737 $term_ids = array(); 2738 $new_tt_ids = array(); 2739 2740 foreach ( (array) $terms as $term ) { 2741 if ( '' === trim( $term ) ) { 2742 continue; 2743 } 2744 2745 $term_info = term_exists( $term, $taxonomy ); 2746 2747 if ( ! $term_info ) { 2748 // Skip if a non-existent term ID is passed. 2749 if ( is_int( $term ) ) { 2750 continue; 2751 } 2752 2753 $term_info = wp_insert_term( $term, $taxonomy ); 2754 } 2755 2756 if ( is_wp_error( $term_info ) ) { 2757 return $term_info; 2758 } 2759 2760 $term_ids[] = $term_info['term_id']; 2761 $tt_id = $term_info['term_taxonomy_id']; 2762 $tt_ids[] = $tt_id; 2763 2764 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, $tt_id ) ) ) { 2765 continue; 2766 } 2767 2768 /** 2769 * Fires immediately before an object-term relationship is added. 2770 * 2771 * @since 2.9.0 2772 * @since 4.7.0 Added the `$taxonomy` parameter. 2773 * 2774 * @param int $object_id Object ID. 2775 * @param int $tt_id Term taxonomy ID. 2776 * @param string $taxonomy Taxonomy slug. 2777 */ 2778 do_action( 'add_term_relationship', $object_id, $tt_id, $taxonomy ); 2779 2780 $wpdb->insert( 2781 $wpdb->term_relationships, 2782 array( 2783 'object_id' => $object_id, 2784 'term_taxonomy_id' => $tt_id, 2785 ) 2786 ); 2787 2788 /** 2789 * Fires immediately after an object-term relationship is added. 2790 * 2791 * @since 2.9.0 2792 * @since 4.7.0 Added the `$taxonomy` parameter. 2793 * 2794 * @param int $object_id Object ID. 2795 * @param int $tt_id Term taxonomy ID. 2796 * @param string $taxonomy Taxonomy slug. 2797 */ 2798 do_action( 'added_term_relationship', $object_id, $tt_id, $taxonomy ); 2799 2800 $new_tt_ids[] = $tt_id; 2801 } 2802 2803 if ( $new_tt_ids ) { 2804 wp_update_term_count( $new_tt_ids, $taxonomy ); 2805 } 2806 2807 if ( ! $append ) { 2808 $delete_tt_ids = array_diff( $old_tt_ids, $tt_ids ); 2809 2810 if ( $delete_tt_ids ) { 2811 $in_delete_tt_ids = "'" . implode( "', '", $delete_tt_ids ) . "'"; 2812 $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 ) ); 2813 $delete_term_ids = array_map( 'intval', $delete_term_ids ); 2814 2815 $remove = wp_remove_object_terms( $object_id, $delete_term_ids, $taxonomy ); 2816 if ( is_wp_error( $remove ) ) { 2817 return $remove; 2818 } 2819 } 2820 } 2821 2822 $t = get_taxonomy( $taxonomy ); 2823 2824 if ( ! $append && isset( $t->sort ) && $t->sort ) { 2825 $values = array(); 2826 $term_order = 0; 2827 2828 $final_tt_ids = wp_get_object_terms( 2829 $object_id, 2830 $taxonomy, 2831 array( 2832 'fields' => 'tt_ids', 2833 'update_term_meta_cache' => false, 2834 ) 2835 ); 2836 2837 foreach ( $tt_ids as $tt_id ) { 2838 if ( in_array( (int) $tt_id, $final_tt_ids, true ) ) { 2839 $values[] = $wpdb->prepare( '(%d, %d, %d)', $object_id, $tt_id, ++$term_order ); 2840 } 2841 } 2842 2843 if ( $values ) { 2844 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)' ) ) { 2845 return new WP_Error( 'db_insert_error', __( 'Could not insert term relationship into the database.' ), $wpdb->last_error ); 2846 } 2847 } 2848 } 2849 2850 wp_cache_delete( $object_id, $taxonomy . '_relationships' ); 2851 wp_cache_delete( 'last_changed', 'terms' ); 2852 2853 /** 2854 * Fires after an object's terms have been set. 2855 * 2856 * @since 2.8.0 2857 * 2858 * @param int $object_id Object ID. 2859 * @param array $terms An array of object term IDs or slugs. 2860 * @param array $tt_ids An array of term taxonomy IDs. 2861 * @param string $taxonomy Taxonomy slug. 2862 * @param bool $append Whether to append new terms to the old terms. 2863 * @param array $old_tt_ids Old array of term taxonomy IDs. 2864 */ 2865 do_action( 'set_object_terms', $object_id, $terms, $tt_ids, $taxonomy, $append, $old_tt_ids ); 2866 2867 return $tt_ids; 2868 } 2869 2870 /** 2871 * Adds term(s) associated with a given object. 2872 * 2873 * @since 3.6.0 2874 * 2875 * @param int $object_id The ID of the object to which the terms will be added. 2876 * @param string|int|array $terms The slug(s) or ID(s) of the term(s) to add. 2877 * @param array|string $taxonomy Taxonomy name. 2878 * @return array|WP_Error Term taxonomy IDs of the affected terms. 2879 */ 2880 function wp_add_object_terms( $object_id, $terms, $taxonomy ) { 2881 return wp_set_object_terms( $object_id, $terms, $taxonomy, true ); 2882 } 2883 2884 /** 2885 * Removes term(s) associated with a given object. 2886 * 2887 * @since 3.6.0 2888 * 2889 * @global wpdb $wpdb WordPress database abstraction object. 2890 * 2891 * @param int $object_id The ID of the object from which the terms will be removed. 2892 * @param string|int|array $terms The slug(s) or ID(s) of the term(s) to remove. 2893 * @param string $taxonomy Taxonomy name. 2894 * @return bool|WP_Error True on success, false or WP_Error on failure. 2895 */ 2896 function wp_remove_object_terms( $object_id, $terms, $taxonomy ) { 2897 global $wpdb; 2898 2899 $object_id = (int) $object_id; 2900 2901 if ( ! taxonomy_exists( $taxonomy ) ) { 2902 return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy.' ) ); 2903 } 2904 2905 if ( ! is_array( $terms ) ) { 2906 $terms = array( $terms ); 2907 } 2908 2909 $tt_ids = array(); 2910 2911 foreach ( (array) $terms as $term ) { 2912 if ( '' === trim( $term ) ) { 2913 continue; 2914 } 2915 2916 $term_info = term_exists( $term, $taxonomy ); 2917 if ( ! $term_info ) { 2918 // Skip if a non-existent term ID is passed. 2919 if ( is_int( $term ) ) { 2920 continue; 2921 } 2922 } 2923 2924 if ( is_wp_error( $term_info ) ) { 2925 return $term_info; 2926 } 2927 2928 $tt_ids[] = $term_info['term_taxonomy_id']; 2929 } 2930 2931 if ( $tt_ids ) { 2932 $in_tt_ids = "'" . implode( "', '", $tt_ids ) . "'"; 2933 2934 /** 2935 * Fires immediately before an object-term relationship is deleted. 2936 * 2937 * @since 2.9.0 2938 * @since 4.7.0 Added the `$taxonomy` parameter. 2939 * 2940 * @param int $object_id Object ID. 2941 * @param array $tt_ids An array of term taxonomy IDs. 2942 * @param string $taxonomy Taxonomy slug. 2943 */ 2944 do_action( 'delete_term_relationships', $object_id, $tt_ids, $taxonomy ); 2945 2946 $deleted = $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->term_relationships WHERE object_id = %d AND term_taxonomy_id IN ($in_tt_ids)", $object_id ) ); 2947 2948 wp_cache_delete( $object_id, $taxonomy . '_relationships' ); 2949 wp_cache_delete( 'last_changed', 'terms' ); 2950 2951 /** 2952 * Fires immediately after an object-term relationship is deleted. 2953 * 2954 * @since 2.9.0 2955 * @since 4.7.0 Added the `$taxonomy` parameter. 2956 * 2957 * @param int $object_id Object ID. 2958 * @param array $tt_ids An array of term taxonomy IDs. 2959 * @param string $taxonomy Taxonomy slug. 2960 */ 2961 do_action( 'deleted_term_relationships', $object_id, $tt_ids, $taxonomy ); 2962 2963 wp_update_term_count( $tt_ids, $taxonomy ); 2964 2965 return (bool) $deleted; 2966 } 2967 2968 return false; 2969 } 2970 2971 /** 2972 * Makes term slug unique, if it isn't already. 2973 * 2974 * The `$slug` has to be unique global to every taxonomy, meaning that one 2975 * taxonomy term can't have a matching slug with another taxonomy term. Each 2976 * slug has to be globally unique for every taxonomy. 2977 * 2978 * The way this works is that if the taxonomy that the term belongs to is 2979 * hierarchical and has a parent, it will append that parent to the $slug. 2980 * 2981 * If that still doesn't return a unique slug, then it tries to append a number 2982 * until it finds a number that is truly unique. 2983 * 2984 * The only purpose for `$term` is for appending a parent, if one exists. 2985 * 2986 * @since 2.3.0 2987 * 2988 * @global wpdb $wpdb WordPress database abstraction object. 2989 * 2990 * @param string $slug The string that will be tried for a unique slug. 2991 * @param object $term The term object that the `$slug` will belong to. 2992 * @return string Will return a true unique slug. 2993 */ 2994 function wp_unique_term_slug( $slug, $term ) { 2995 global $wpdb; 2996 2997 $needs_suffix = true; 2998 $original_slug = $slug; 2999 3000 // As of 4.1, duplicate slugs are allowed as long as they're in different taxonomies. 3001 if ( ! term_exists( $slug ) || get_option( 'db_version' ) >= 30133 && ! get_term_by( 'slug', $slug, $term->taxonomy ) ) { 3002 $needs_suffix = false; 3003 } 3004 3005 /* 3006 * If the taxonomy supports hierarchy and the term has a parent, make the slug unique 3007 * by incorporating parent slugs. 3008 */ 3009 $parent_suffix = ''; 3010 if ( $needs_suffix && is_taxonomy_hierarchical( $term->taxonomy ) && ! empty( $term->parent ) ) { 3011 $the_parent = $term->parent; 3012 while ( ! empty( $the_parent ) ) { 3013 $parent_term = get_term( $the_parent, $term->taxonomy ); 3014 if ( is_wp_error( $parent_term ) || empty( $parent_term ) ) { 3015 break; 3016 } 3017 $parent_suffix .= '-' . $parent_term->slug; 3018 if ( ! term_exists( $slug . $parent_suffix ) ) { 3019 break; 3020 } 3021 3022 if ( empty( $parent_term->parent ) ) { 3023 break; 3024 } 3025 $the_parent = $parent_term->parent; 3026 } 3027 } 3028 3029 // If we didn't get a unique slug, try appending a number to make it unique. 3030 3031 /** 3032 * Filters whether the proposed unique term slug is bad. 3033 * 3034 * @since 4.3.0 3035 * 3036 * @param bool $needs_suffix Whether the slug needs to be made unique with a suffix. 3037 * @param string $slug The slug. 3038 * @param object $term Term object. 3039 */ 3040 if ( apply_filters( 'wp_unique_term_slug_is_bad_slug', $needs_suffix, $slug, $term ) ) { 3041 if ( $parent_suffix ) { 3042 $slug .= $parent_suffix; 3043 } 3044 3045 if ( ! empty( $term->term_id ) ) { 3046 $query = $wpdb->prepare( "SELECT slug FROM $wpdb->terms WHERE slug = %s AND term_id != %d", $slug, $term->term_id ); 3047 } else { 3048 $query = $wpdb->prepare( "SELECT slug FROM $wpdb->terms WHERE slug = %s", $slug ); 3049 } 3050 3051 if ( $wpdb->get_var( $query ) ) { // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared 3052 $num = 2; 3053 do { 3054 $alt_slug = $slug . "-$num"; 3055 $num++; 3056 $slug_check = $wpdb->get_var( $wpdb->prepare( "SELECT slug FROM $wpdb->terms WHERE slug = %s", $alt_slug ) ); 3057 } while ( $slug_check ); 3058 $slug = $alt_slug; 3059 } 3060 } 3061 3062 /** 3063 * Filters the unique term slug. 3064 * 3065 * @since 4.3.0 3066 * 3067 * @param string $slug Unique term slug. 3068 * @param object $term Term object. 3069 * @param string $original_slug Slug originally passed to the function for testing. 3070 */ 3071 return apply_filters( 'wp_unique_term_slug', $slug, $term, $original_slug ); 3072 } 3073 3074 /** 3075 * Updates term based on arguments provided. 3076 * 3077 * The `$args` will indiscriminately override all values with the same field name. 3078 * Care must be taken to not override important information need to update or 3079 * update will fail (or perhaps create a new term, neither would be acceptable). 3080 * 3081 * Defaults will set 'alias_of', 'description', 'parent', and 'slug' if not 3082 * defined in `$args` already. 3083 * 3084 * 'alias_of' will create a term group, if it doesn't already exist, and 3085 * update it for the `$term`. 3086 * 3087 * If the 'slug' argument in `$args` is missing, then the 'name' will be used. 3088 * If you set 'slug' and it isn't unique, then a WP_Error is returned. 3089 * If you don't pass any slug, then a unique one will be created. 3090 * 3091 * @since 2.3.0 3092 * 3093 * @global wpdb $wpdb WordPress database abstraction object. 3094 * 3095 * @param int $term_id The ID of the term. 3096 * @param string $taxonomy The taxonomy of the term. 3097 * @param array|string $args { 3098 * Optional. Array or string of arguments for updating a term. 3099 * 3100 * @type string $alias_of Slug of the term to make this term an alias of. 3101 * Default empty string. Accepts a term slug. 3102 * @type string $description The term description. Default empty string. 3103 * @type int $parent The id of the parent term. Default 0. 3104 * @type string $slug The term slug to use. Default empty string. 3105 * } 3106 * @return array|WP_Error An array containing the `term_id` and `term_taxonomy_id`, 3107 * WP_Error otherwise. 3108 */ 3109 function wp_update_term( $term_id, $taxonomy, $args = array() ) { 3110 global $wpdb; 3111 3112 if ( ! taxonomy_exists( $taxonomy ) ) { 3113 return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy.' ) ); 3114 } 3115 3116 $term_id = (int) $term_id; 3117 3118 // First, get all of the original args. 3119 $term = get_term( $term_id, $taxonomy ); 3120 3121 if ( is_wp_error( $term ) ) { 3122 return $term; 3123 } 3124 3125 if ( ! $term ) { 3126 return new WP_Error( 'invalid_term', __( 'Empty Term.' ) ); 3127 } 3128 3129 $term = (array) $term->data; 3130 3131 // Escape data pulled from DB. 3132 $term = wp_slash( $term ); 3133 3134 // Merge old and new args with new args overwriting old ones. 3135 $args = array_merge( $term, $args ); 3136 3137 $defaults = array( 3138 'alias_of' => '', 3139 'description' => '', 3140 'parent' => 0, 3141 'slug' => '', 3142 ); 3143 $args = wp_parse_args( $args, $defaults ); 3144 $args = sanitize_term( $args, $taxonomy, 'db' ); 3145 $parsed_args = $args; 3146 3147 // expected_slashed ($name) 3148 $name = wp_unslash( $args['name'] ); 3149 $description = wp_unslash( $args['description'] ); 3150 3151 $parsed_args['name'] = $name; 3152 $parsed_args['description'] = $description; 3153 3154 if ( '' === trim( $name ) ) { 3155 return new WP_Error( 'empty_term_name', __( 'A name is required for this term.' ) ); 3156 } 3157 3158 if ( (int) $parsed_args['parent'] > 0 && ! term_exists( (int) $parsed_args['parent'] ) ) { 3159 return new WP_Error( 'missing_parent', __( 'Parent term does not exist.' ) ); 3160 } 3161 3162 $empty_slug = false; 3163 if ( empty( $args['slug'] ) ) { 3164 $empty_slug = true; 3165 $slug = sanitize_title( $name ); 3166 } else { 3167 $slug = $args['slug']; 3168 } 3169 3170 $parsed_args['slug'] = $slug; 3171 3172 $term_group = isset( $parsed_args['term_group'] ) ? $parsed_args['term_group'] : 0; 3173 if ( $args['alias_of'] ) { 3174 $alias = get_term_by( 'slug', $args['alias_of'], $taxonomy ); 3175 if ( ! empty( $alias->term_group ) ) { 3176 // The alias we want is already in a group, so let's use that one. 3177 $term_group = $alias->term_group; 3178 } elseif ( ! empty( $alias->term_id ) ) { 3179 /* 3180 * The alias is not in a group, so we create a new one 3181 * and add the alias to it. 3182 */ 3183 $term_group = $wpdb->get_var( "SELECT MAX(term_group) FROM $wpdb->terms" ) + 1; 3184 3185 wp_update_term( 3186 $alias->term_id, 3187 $taxonomy, 3188 array( 3189 'term_group' => $term_group, 3190 ) 3191 ); 3192 } 3193 3194 $parsed_args['term_group'] = $term_group; 3195 } 3196 3197 /** 3198 * Filters the term parent. 3199 * 3200 * Hook to this filter to see if it will cause a hierarchy loop. 3201 * 3202 * @since 3.1.0 3203 * 3204 * @param int $parent ID of the parent term. 3205 * @param int $term_id Term ID. 3206 * @param string $taxonomy Taxonomy slug. 3207 * @param array $parsed_args An array of potentially altered update arguments for the given term. 3208 * @param array $args An array of update arguments for the given term. 3209 */ 3210 $parent = (int) apply_filters( 'wp_update_term_parent', $args['parent'], $term_id, $taxonomy, $parsed_args, $args ); 3211 3212 // Check for duplicate slug. 3213 $duplicate = get_term_by( 'slug', $slug, $taxonomy ); 3214 if ( $duplicate && $duplicate->term_id !== $term_id ) { 3215 // If an empty slug was passed or the parent changed, reset the slug to something unique. 3216 // Otherwise, bail. 3217 if ( $empty_slug || ( $parent !== (int) $term['parent'] ) ) { 3218 $slug = wp_unique_term_slug( $slug, (object) $args ); 3219 } else { 3220 /* translators: %s: Taxonomy term slug. */ 3221 return new WP_Error( 'duplicate_term_slug', sprintf( __( 'The slug “%s” is already in use by another term.' ), $slug ) ); 3222 } 3223 } 3224 3225 $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 ) ); 3226 3227 // Check whether this is a shared term that needs splitting. 3228 $_term_id = _split_shared_term( $term_id, $tt_id ); 3229 if ( ! is_wp_error( $_term_id ) ) { 3230 $term_id = $_term_id; 3231 } 3232 3233 /** 3234 * Fires immediately before the given terms are edited. 3235 * 3236 * @since 2.9.0 3237 * 3238 * @param int $term_id Term ID. 3239 * @param string $taxonomy Taxonomy slug. 3240 */ 3241 do_action( 'edit_terms', $term_id, $taxonomy ); 3242 3243 $data = compact( 'name', 'slug', 'term_group' ); 3244 3245 /** 3246 * Filters term data before it is updated in the database. 3247 * 3248 * @since 4.7.0 3249 * 3250 * @param array $data Term data to be updated. 3251 * @param int $term_id Term ID. 3252 * @param string $taxonomy Taxonomy slug. 3253 * @param array $args Arguments passed to wp_update_term(). 3254 */ 3255 $data = apply_filters( 'wp_update_term_data', $data, $term_id, $taxonomy, $args ); 3256 3257 $wpdb->update( $wpdb->terms, $data, compact( 'term_id' ) ); 3258 3259 if ( empty( $slug ) ) { 3260 $slug = sanitize_title( $name, $term_id ); 3261 $wpdb->update( $wpdb->terms, compact( 'slug' ), compact( 'term_id' ) ); 3262 } 3263 3264 /** 3265 * Fires immediately after a term is updated in the database, but before its 3266 * term-taxonomy relationship is updated. 3267 * 3268 * @since 2.9.0 3269 * 3270 * @param int $term_id Term ID. 3271 * @param string $taxonomy Taxonomy slug. 3272 */ 3273 do_action( 'edited_terms', $term_id, $taxonomy ); 3274 3275 /** 3276 * Fires immediate before a term-taxonomy relationship is updated. 3277 * 3278 * @since 2.9.0 3279 * 3280 * @param int $tt_id Term taxonomy ID. 3281 * @param string $taxonomy Taxonomy slug. 3282 */ 3283 do_action( 'edit_term_taxonomy', $tt_id, $taxonomy ); 3284 3285 $wpdb->update( $wpdb->term_taxonomy, compact( 'term_id', 'taxonomy', 'description', 'parent' ), array( 'term_taxonomy_id' => $tt_id ) ); 3286 3287 /** 3288 * Fires immediately after a term-taxonomy relationship is updated. 3289 * 3290 * @since 2.9.0 3291 * 3292 * @param int $tt_id Term taxonomy ID. 3293 * @param string $taxonomy Taxonomy slug. 3294 */ 3295 do_action( 'edited_term_taxonomy', $tt_id, $taxonomy ); 3296 3297 /** 3298 * Fires after a term has been updated, but before the term cache has been cleaned. 3299 * 3300 * The {@see 'edit_$taxonomy'} hook is also available for targeting a specific 3301 * taxonomy. 3302 * 3303 * @since 2.3.0 3304 * 3305 * @param int $term_id Term ID. 3306 * @param int $tt_id Term taxonomy ID. 3307 * @param string $taxonomy Taxonomy slug. 3308 */ 3309 do_action( 'edit_term', $term_id, $tt_id, $taxonomy ); 3310 3311 /** 3312 * Fires after a term in a specific taxonomy has been updated, but before the term 3313 * cache has been cleaned. 3314 * 3315 * The dynamic portion of the hook name, `$taxonomy`, refers to the taxonomy slug. 3316 * 3317 * Possible hook names include: 3318 * 3319 * - `edit_category` 3320 * - `edit_post_tag` 3321 * 3322 * @since 2.3.0 3323 * 3324 * @param int $term_id Term ID. 3325 * @param int $tt_id Term taxonomy ID. 3326 */ 3327 do_action( "edit_{$taxonomy}", $term_id, $tt_id ); 3328 3329 /** This filter is documented in wp-includes/taxonomy.php */ 3330 $term_id = apply_filters( 'term_id_filter', $term_id, $tt_id ); 3331 3332 clean_term_cache( $term_id, $taxonomy ); 3333 3334 /** 3335 * Fires after a term has been updated, and the term cache has been cleaned. 3336 * 3337 * The {@see 'edited_$taxonomy'} hook is also available for targeting a specific 3338 * taxonomy. 3339 * 3340 * @since 2.3.0 3341 * 3342 * @param int $term_id Term ID. 3343 * @param int $tt_id Term taxonomy ID. 3344 * @param string $taxonomy Taxonomy slug. 3345 */ 3346 do_action( 'edited_term', $term_id, $tt_id, $taxonomy ); 3347 3348 /** 3349 * Fires after a term for a specific taxonomy has been updated, and the term 3350 * cache has been cleaned. 3351 * 3352 * The dynamic portion of the hook name, `$taxonomy`, refers to the taxonomy slug. 3353 * 3354 * Possible hook names include: 3355 * 3356 * - `edited_category` 3357 * - `edited_post_tag` 3358 * 3359 * @since 2.3.0 3360 * 3361 * @param int $term_id Term ID. 3362 * @param int $tt_id Term taxonomy ID. 3363 */ 3364 do_action( "edited_{$taxonomy}", $term_id, $tt_id ); 3365 3366 /** This action is documented in wp-includes/taxonomy.php */ 3367 do_action( 'saved_term', $term_id, $tt_id, $taxonomy, true ); 3368 3369 /** This action is documented in wp-includes/taxonomy.php */ 3370 do_action( "saved_{$taxonomy}", $term_id, $tt_id, true ); 3371 3372 return array( 3373 'term_id' => $term_id, 3374 'term_taxonomy_id' => $tt_id, 3375 ); 3376 } 3377 3378 /** 3379 * Enables or disables term counting. 3380 * 3381 * @since 2.5.0 3382 * 3383 * @param bool $defer Optional. Enable if true, disable if false. 3384 * @return bool Whether term counting is enabled or disabled. 3385 */ 3386 function wp_defer_term_counting( $defer = null ) { 3387 static $_defer = false; 3388 3389 if ( is_bool( $defer ) ) { 3390 $_defer = $defer; 3391 // Flush any deferred counts. 3392 if ( ! $defer ) { 3393 wp_update_term_count( null, null, true ); 3394 } 3395 } 3396 3397 return $_defer; 3398 } 3399 3400 /** 3401 * Updates the amount of terms in taxonomy. 3402 * 3403 * If there is a taxonomy callback applied, then it will be called for updating 3404 * the count. 3405 * 3406 * The default action is to count what the amount of terms have the relationship 3407 * of term ID. Once that is done, then update the database. 3408 * 3409 * @since 2.3.0 3410 * 3411 * @param int|array $terms The term_taxonomy_id of the terms. 3412 * @param string $taxonomy The context of the term. 3413 * @param bool $do_deferred Whether to flush the deferred term counts too. Default false. 3414 * @return bool If no terms will return false, and if successful will return true. 3415 */ 3416 function wp_update_term_count( $terms, $taxonomy, $do_deferred = false ) { 3417 static $_deferred = array(); 3418 3419 if ( $do_deferred ) { 3420 foreach ( (array) array_keys( $_deferred ) as $tax ) { 3421 wp_update_term_count_now( $_deferred[ $tax ], $tax ); 3422 unset( $_deferred[ $tax ] ); 3423 } 3424 } 3425 3426 if ( empty( $terms ) ) { 3427 return false; 3428 } 3429 3430 if ( ! is_array( $terms ) ) { 3431 $terms = array( $terms ); 3432 } 3433 3434 if ( wp_defer_term_counting() ) { 3435 if ( ! isset( $_deferred[ $taxonomy ] ) ) { 3436 $_deferred[ $taxonomy ] = array(); 3437 } 3438 $_deferred[ $taxonomy ] = array_unique( array_merge( $_deferred[ $taxonomy ], $terms ) ); 3439 return true; 3440 } 3441 3442 return wp_update_term_count_now( $terms, $taxonomy ); 3443 } 3444 3445 /** 3446 * Performs term count update immediately. 3447 * 3448 * @since 2.5.0 3449 * 3450 * @param array $terms The term_taxonomy_id of terms to update. 3451 * @param string $taxonomy The context of the term. 3452 * @return true Always true when complete. 3453 */ 3454 function wp_update_term_count_now( $terms, $taxonomy ) { 3455 $terms = array_map( 'intval', $terms ); 3456 3457 $taxonomy = get_taxonomy( $taxonomy ); 3458 if ( ! empty( $taxonomy->update_count_callback ) ) { 3459 call_user_func( $taxonomy->update_count_callback, $terms, $taxonomy ); 3460 } else { 3461 $object_types = (array) $taxonomy->object_type; 3462 foreach ( $object_types as &$object_type ) { 3463 if ( 0 === strpos( $object_type, 'attachment:' ) ) { 3464 list( $object_type ) = explode( ':', $object_type ); 3465 } 3466 } 3467 3468 if ( array_filter( $object_types, 'post_type_exists' ) == $object_types ) { 3469 // Only post types are attached to this taxonomy. 3470 _update_post_term_count( $terms, $taxonomy ); 3471 } else { 3472 // Default count updater. 3473 _update_generic_term_count( $terms, $taxonomy ); 3474 } 3475 } 3476 3477 clean_term_cache( $terms, '', false ); 3478 3479 return true; 3480 } 3481 3482 // 3483 // Cache. 3484 // 3485 3486 /** 3487 * Removes the taxonomy relationship to terms from the cache. 3488 * 3489 * Will remove the entire taxonomy relationship containing term `$object_id`. The 3490 * term IDs have to exist within the taxonomy `$object_type` for the deletion to 3491 * take place. 3492 * 3493 * @since 2.3.0 3494 * 3495 * @global bool $_wp_suspend_cache_invalidation 3496 * 3497 * @see get_object_taxonomies() for more on $object_type. 3498 * 3499 * @param int|array $object_ids Single or list of term object ID(s). 3500 * @param array|string $object_type The taxonomy object type. 3501 */ 3502 function clean_object_term_cache( $object_ids, $object_type ) { 3503 global $_wp_suspend_cache_invalidation; 3504 3505 if ( ! empty( $_wp_suspend_cache_invalidation ) ) { 3506 return; 3507 } 3508 3509 if ( ! is_array( $object_ids ) ) { 3510 $object_ids = array( $object_ids ); 3511 } 3512 3513 $taxonomies = get_object_taxonomies( $object_type ); 3514 3515 foreach ( $taxonomies as $taxonomy ) { 3516 wp_cache_delete_multiple( $object_ids, "{$taxonomy}_relationships" ); 3517 } 3518 3519 wp_cache_delete( 'last_changed', 'terms' ); 3520 3521 /** 3522 * Fires after the object term cache has been cleaned. 3523 * 3524 * @since 2.5.0 3525 * 3526 * @param array $object_ids An array of object IDs. 3527 * @param string $object_type Object type. 3528 */ 3529 do_action( 'clean_object_term_cache', $object_ids, $object_type ); 3530 } 3531 3532 /** 3533 * Removes all of the term IDs from the cache. 3534 * 3535 * @since 2.3.0 3536 * 3537 * @global wpdb $wpdb WordPress database abstraction object. 3538 * @global bool $_wp_suspend_cache_invalidation 3539 * 3540 * @param int|int[] $ids Single or array of term IDs. 3541 * @param string $taxonomy Optional. Taxonomy slug. Can be empty, in which case the taxonomies of the passed 3542 * term IDs will be used. Default empty. 3543 * @param bool $clean_taxonomy Optional. Whether to clean taxonomy wide caches (true), or just individual 3544 * term object caches (false). Default true. 3545 */ 3546 function clean_term_cache( $ids, $taxonomy = '', $clean_taxonomy = true ) { 3547 global $wpdb, $_wp_suspend_cache_invalidation; 3548 3549 if ( ! empty( $_wp_suspend_cache_invalidation ) ) { 3550 return; 3551 } 3552 3553 if ( ! is_array( $ids ) ) { 3554 $ids = array( $ids ); 3555 } 3556 3557 $taxonomies = array(); 3558 // If no taxonomy, assume tt_ids. 3559 if ( empty( $taxonomy ) ) { 3560 $tt_ids = array_map( 'intval', $ids ); 3561 $tt_ids = implode( ', ', $tt_ids ); 3562 $terms = $wpdb->get_results( "SELECT term_id, taxonomy FROM $wpdb->term_taxonomy WHERE term_taxonomy_id IN ($tt_ids)" ); 3563 $ids = array(); 3564 3565 foreach ( (array) $terms as $term ) { 3566 $taxonomies[] = $term->taxonomy; 3567 $ids[] = $term->term_id; 3568 } 3569 wp_cache_delete_multiple( $ids, 'terms' ); 3570 $taxonomies = array_unique( $taxonomies ); 3571 } else { 3572 wp_cache_delete_multiple( $ids, 'terms' ); 3573 $taxonomies = array( $taxonomy ); 3574 } 3575 3576 foreach ( $taxonomies as $taxonomy ) { 3577 if ( $clean_taxonomy ) { 3578 clean_taxonomy_cache( $taxonomy ); 3579 } 3580 3581 /** 3582 * Fires once after each taxonomy's term cache has been cleaned. 3583 * 3584 * @since 2.5.0 3585 * @since 4.5.0 Added the `$clean_taxonomy` parameter. 3586 * 3587 * @param array $ids An array of term IDs. 3588 * @param string $taxonomy Taxonomy slug. 3589 * @param bool $clean_taxonomy Whether or not to clean taxonomy-wide caches 3590 */ 3591 do_action( 'clean_term_cache', $ids, $taxonomy, $clean_taxonomy ); 3592 } 3593 3594 wp_cache_set( 'last_changed', microtime(), 'terms' ); 3595 } 3596 3597 /** 3598 * Cleans the caches for a taxonomy. 3599 * 3600 * @since 4.9.0 3601 * 3602 * @param string $taxonomy Taxonomy slug. 3603 */ 3604 function clean_taxonomy_cache( $taxonomy ) { 3605 wp_cache_delete( 'all_ids', $taxonomy ); 3606 wp_cache_delete( 'get', $taxonomy ); 3607 wp_cache_delete( 'last_changed', 'terms' ); 3608 3609 // Regenerate cached hierarchy. 3610 delete_option( "{$taxonomy}_children" ); 3611 _get_term_hierarchy( $taxonomy ); 3612 3613 /** 3614 * Fires after a taxonomy's caches have been cleaned. 3615 * 3616 * @since 4.9.0 3617 * 3618 * @param string $taxonomy Taxonomy slug. 3619 */ 3620 do_action( 'clean_taxonomy_cache', $taxonomy ); 3621 } 3622 3623 /** 3624 * Retrieves the cached term objects for the given object ID. 3625 * 3626 * Upstream functions (like get_the_terms() and is_object_in_term()) are 3627 * responsible for populating the object-term relationship cache. The current 3628 * function only fetches relationship data that is already in the cache. 3629 * 3630 * @since 2.3.0 3631 * @since 4.7.0 Returns a `WP_Error` object if there's an error with 3632 * any of the matched terms. 3633 * 3634 * @param int $id Term object ID, for example a post, comment, or user ID. 3635 * @param string $taxonomy Taxonomy name. 3636 * @return bool|WP_Term[]|WP_Error Array of `WP_Term` objects, if cached. 3637 * False if cache is empty for `$taxonomy` and `$id`. 3638 * WP_Error if get_term() returns an error object for any term. 3639 */ 3640 function get_object_term_cache( $id, $taxonomy ) { 3641 $_term_ids = wp_cache_get( $id, "{$taxonomy}_relationships" ); 3642 3643 // We leave the priming of relationship caches to upstream functions. 3644 if ( false === $_term_ids ) { 3645 return false; 3646 } 3647 3648 // Backward compatibility for if a plugin is putting objects into the cache, rather than IDs. 3649 $term_ids = array(); 3650 foreach ( $_term_ids as $term_id ) { 3651 if ( is_numeric( $term_id ) ) { 3652 $term_ids[] = (int) $term_id; 3653 } elseif ( isset( $term_id->term_id ) ) { 3654 $term_ids[] = (int) $term_id->term_id; 3655 } 3656 } 3657 3658 // Fill the term objects. 3659 _prime_term_caches( $term_ids ); 3660 3661 $terms = array(); 3662 foreach ( $term_ids as $term_id ) { 3663 $term = get_term( $term_id, $taxonomy ); 3664 if ( is_wp_error( $term ) ) { 3665 return $term; 3666 } 3667 3668 $terms[] = $term; 3669 } 3670 3671 return $terms; 3672 } 3673 3674 /** 3675 * Updates the cache for the given term object ID(s). 3676 * 3677 * Note: Due to performance concerns, great care should be taken to only update 3678 * term caches when necessary. Processing time can increase exponentially depending 3679 * on both the number of passed term IDs and the number of taxonomies those terms 3680 * belong to. 3681 * 3682 * Caches will only be updated for terms not already cached. 3683 * 3684 * @since 2.3.0 3685 * 3686 * @param string|int[] $object_ids Comma-separated list or array of term object IDs. 3687 * @param string|string[] $object_type The taxonomy object type or array of the same. 3688 * @return void|false Void on success or if the `$object_ids` parameter is empty, 3689 * false if all of the terms in `$object_ids` are already cached. 3690 */ 3691 function update_object_term_cache( $object_ids, $object_type ) { 3692 if ( empty( $object_ids ) ) { 3693 return; 3694 } 3695 3696 if ( ! is_array( $object_ids ) ) { 3697 $object_ids = explode( ',', $object_ids ); 3698 } 3699 3700 $object_ids = array_map( 'intval', $object_ids ); 3701 $non_cached_ids = array(); 3702 3703 $taxonomies = get_object_taxonomies( $object_type ); 3704 3705 foreach ( $taxonomies as $taxonomy ) { 3706 $cache_values = wp_cache_get_multiple( (array) $object_ids, "{$taxonomy}_relationships" ); 3707 3708 foreach ( $cache_values as $id => $value ) { 3709 if ( false === $value ) { 3710 $non_cached_ids[] = $id; 3711 } 3712 } 3713 } 3714 3715 if ( empty( $non_cached_ids ) ) { 3716 return false; 3717 } 3718 3719 $non_cached_ids = array_unique( $non_cached_ids ); 3720 3721 $terms = wp_get_object_terms( 3722 $non_cached_ids, 3723 $taxonomies, 3724 array( 3725 'fields' => 'all_with_object_id', 3726 'orderby' => 'name', 3727 'update_term_meta_cache' => false, 3728 ) 3729 ); 3730 3731 $object_terms = array(); 3732 foreach ( (array) $terms as $term ) { 3733 $object_terms[ $term->object_id ][ $term->taxonomy ][] = $term->term_id; 3734 } 3735 3736 foreach ( $non_cached_ids as $id ) { 3737 foreach ( $taxonomies as $taxonomy ) { 3738 if ( ! isset( $object_terms[ $id ][ $taxonomy ] ) ) { 3739 if ( ! isset( $object_terms[ $id ] ) ) { 3740 $object_terms[ $id ] = array(); 3741 } 3742 $object_terms[ $id ][ $taxonomy ] = array(); 3743 } 3744 } 3745 } 3746 3747 $cache_values = array(); 3748 foreach ( $object_terms as $id => $value ) { 3749 foreach ( $value as $taxonomy => $terms ) { 3750 $cache_values[ $taxonomy ][ $id ] = $terms; 3751 } 3752 } 3753 foreach ( $cache_values as $taxonomy => $data ) { 3754 wp_cache_add_multiple( $data, "{$taxonomy}_relationships" ); 3755 } 3756 } 3757 3758 /** 3759 * Updates terms in cache. 3760 * 3761 * @since 2.3.0 3762 * 3763 * @param WP_Term[] $terms Array of term objects to change. 3764 * @param string $taxonomy Not used. 3765 */ 3766 function update_term_cache( $terms, $taxonomy = '' ) { 3767 $data = array(); 3768 foreach ( (array) $terms as $term ) { 3769 // Create a copy in case the array was passed by reference. 3770 $_term = clone $term; 3771 3772 // Object ID should not be cached. 3773 unset( $_term->object_id ); 3774 3775 $data[ $term->term_id ] = $_term; 3776 } 3777 wp_cache_add_multiple( $data, 'terms' ); 3778 } 3779 3780 // 3781 // Private. 3782 // 3783 3784 /** 3785 * Retrieves children of taxonomy as term IDs. 3786 * 3787 * @access private 3788 * @since 2.3.0 3789 * 3790 * @param string $taxonomy Taxonomy name. 3791 * @return array Empty if $taxonomy isn't hierarchical or returns children as term IDs. 3792 */ 3793 function _get_term_hierarchy( $taxonomy ) { 3794 if ( ! is_taxonomy_hierarchical( $taxonomy ) ) { 3795 return array(); 3796 } 3797 $children = get_option( "{$taxonomy}_children" ); 3798 3799 if ( is_array( $children ) ) { 3800 return $children; 3801 } 3802 $children = array(); 3803 $terms = get_terms( 3804 array( 3805 'taxonomy' => $taxonomy, 3806 'get' => 'all', 3807 'orderby' => 'id', 3808 'fields' => 'id=>parent', 3809 'update_term_meta_cache' => false, 3810 ) 3811 ); 3812 foreach ( $terms as $term_id => $parent ) { 3813 if ( $parent > 0 ) { 3814 $children[ $parent ][] = $term_id; 3815 } 3816 } 3817 update_option( "{$taxonomy}_children", $children ); 3818 3819 return $children; 3820 } 3821 3822 /** 3823 * Gets the subset of $terms that are descendants of $term_id. 3824 * 3825 * If `$terms` is an array of objects, then _get_term_children() returns an array of objects. 3826 * If `$terms` is an array of IDs, then _get_term_children() returns an array of IDs. 3827 * 3828 * @access private 3829 * @since 2.3.0 3830 * 3831 * @param int $term_id The ancestor term: all returned terms should be descendants of `$term_id`. 3832 * @param array $terms The set of terms - either an array of term objects or term IDs - from which those that 3833 * are descendants of $term_id will be chosen. 3834 * @param string $taxonomy The taxonomy which determines the hierarchy of the terms. 3835 * @param array $ancestors Optional. Term ancestors that have already been identified. Passed by reference, to keep 3836 * track of found terms when recursing the hierarchy. The array of located ancestors is used 3837 * to prevent infinite recursion loops. For performance, `term_ids` are used as array keys, 3838 * with 1 as value. Default empty array. 3839 * @return array|WP_Error The subset of $terms that are descendants of $term_id. 3840 */ 3841 function _get_term_children( $term_id, $terms, $taxonomy, &$ancestors = array() ) { 3842 $empty_array = array(); 3843 if ( empty( $terms ) ) { 3844 return $empty_array; 3845 } 3846 3847 $term_id = (int) $term_id; 3848 $term_list = array(); 3849 $has_children = _get_term_hierarchy( $taxonomy ); 3850 3851 if ( $term_id && ! isset( $has_children[ $term_id ] ) ) { 3852 return $empty_array; 3853 } 3854 3855 // Include the term itself in the ancestors array, so we can properly detect when a loop has occurred. 3856 if ( empty( $ancestors ) ) { 3857 $ancestors[ $term_id ] = 1; 3858 } 3859 3860 foreach ( (array) $terms as $term ) { 3861 $use_id = false; 3862 if ( ! is_object( $term ) ) { 3863 $term = get_term( $term, $taxonomy ); 3864 if ( is_wp_error( $term ) ) { 3865 return $term; 3866 } 3867 $use_id = true; 3868 } 3869 3870 // Don't recurse if we've already identified the term as a child - this indicates a loop. 3871 if ( isset( $ancestors[ $term->term_id ] ) ) { 3872 continue; 3873 } 3874 3875 if ( (int) $term->parent === $term_id ) { 3876 if ( $use_id ) { 3877 $term_list[] = $term->term_id; 3878 } else { 3879 $term_list[] = $term; 3880 } 3881 3882 if ( ! isset( $has_children[ $term->term_id ] ) ) { 3883 continue; 3884 } 3885 3886 $ancestors[ $term->term_id ] = 1; 3887 3888 $children = _get_term_children( $term->term_id, $terms, $taxonomy, $ancestors ); 3889 if ( $children ) { 3890 $term_list = array_merge( $term_list, $children ); 3891 } 3892 } 3893 } 3894 3895 return $term_list; 3896 } 3897 3898 /** 3899 * Adds count of children to parent count. 3900 * 3901 * Recalculates term counts by including items from child terms. Assumes all 3902 * relevant children are already in the $terms argument. 3903 * 3904 * @access private 3905 * @since 2.3.0 3906 * 3907 * @global wpdb $wpdb WordPress database abstraction object. 3908 * 3909 * @param object[]|WP_Term[] $terms List of term objects (passed by reference). 3910 * @param string $taxonomy Term context. 3911 */ 3912 function _pad_term_counts( &$terms, $taxonomy ) { 3913 global $wpdb; 3914 3915 // This function only works for hierarchical taxonomies like post categories. 3916 if ( ! is_taxonomy_hierarchical( $taxonomy ) ) { 3917 return; 3918 } 3919 3920 $term_hier = _get_term_hierarchy( $taxonomy ); 3921 3922 if ( empty( $term_hier ) ) { 3923 return; 3924 } 3925 3926 $term_items = array(); 3927 $terms_by_id = array(); 3928 $term_ids = array(); 3929 3930 foreach ( (array) $terms as $key => $term ) { 3931 $terms_by_id[ $term->term_id ] = & $terms[ $key ]; 3932 $term_ids[ $term->term_taxonomy_id ] = $term->term_id; 3933 } 3934 3935 // Get the object and term IDs and stick them in a lookup table. 3936 $tax_obj = get_taxonomy( $taxonomy ); 3937 $object_types = esc_sql( $tax_obj->object_type ); 3938 $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'" ); 3939 3940 foreach ( $results as $row ) { 3941 $id = $term_ids[ $row->term_taxonomy_id ]; 3942 3943 $term_items[ $id ][ $row->object_id ] = isset( $term_items[ $id ][ $row->object_id ] ) ? ++$term_items[ $id ][ $row->object_id ] : 1; 3944 } 3945 3946 // Touch every ancestor's lookup row for each post in each term. 3947 foreach ( $term_ids as $term_id ) { 3948 $child = $term_id; 3949 $ancestors = array(); 3950 while ( ! empty( $terms_by_id[ $child ] ) && $parent = $terms_by_id[ $child ]->parent ) { 3951 $ancestors[] = $child; 3952 3953 if ( ! empty( $term_items[ $term_id ] ) ) { 3954 foreach ( $term_items[ $term_id ] as $item_id => $touches ) { 3955 $term_items[ $parent ][ $item_id ] = isset( $term_items[ $parent ][ $item_id ] ) ? ++$term_items[ $parent ][ $item_id ] : 1; 3956 } 3957 } 3958 3959 $child = $parent; 3960 3961 if ( in_array( $parent, $ancestors, true ) ) { 3962 break; 3963 } 3964 } 3965 } 3966 3967 // Transfer the touched cells. 3968 foreach ( (array) $term_items as $id => $items ) { 3969 if ( isset( $terms_by_id[ $id ] ) ) { 3970 $terms_by_id[ $id ]->count = count( $items ); 3971 } 3972 } 3973 } 3974 3975 /** 3976 * Adds any terms from the given IDs to the cache that do not already exist in cache. 3977 * 3978 * @since 4.6.0 3979 * @access private 3980 * 3981 * @global wpdb $wpdb WordPress database abstraction object. 3982 * 3983 * @param array $term_ids Array of term IDs. 3984 * @param bool $update_meta_cache Optional. Whether to update the meta cache. Default true. 3985 */ 3986 function _prime_term_caches( $term_ids, $update_meta_cache = true ) { 3987 global $wpdb; 3988 3989 $non_cached_ids = _get_non_cached_ids( $term_ids, 'terms' ); 3990 if ( ! empty( $non_cached_ids ) ) { 3991 $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 ) ) ) ); 3992 3993 update_term_cache( $fresh_terms ); 3994 3995 if ( $update_meta_cache ) { 3996 update_termmeta_cache( $non_cached_ids ); 3997 } 3998 } 3999 } 4000 4001 // 4002 // Default callbacks. 4003 // 4004 4005 /** 4006 * Updates term count based on object types of the current taxonomy. 4007 * 4008 * Private function for the default callback for post_tag and category 4009 * taxonomies. 4010 * 4011 * @access private 4012 * @since 2.3.0 4013 * 4014 * @global wpdb $wpdb WordPress database abstraction object. 4015 * 4016 * @param int[] $terms List of term taxonomy IDs. 4017 * @param WP_Taxonomy $taxonomy Current taxonomy object of terms. 4018 */ 4019 function _update_post_term_count( $terms, $taxonomy ) { 4020 global $wpdb; 4021 4022 $object_types = (array) $taxonomy->object_type; 4023 4024 foreach ( $object_types as &$object_type ) { 4025 list( $object_type ) = explode( ':', $object_type ); 4026 } 4027 4028 $object_types = array_unique( $object_types ); 4029 4030 $check_attachments = array_search( 'attachment', $object_types, true ); 4031 if ( false !== $check_attachments ) { 4032 unset( $object_types[ $check_attachments ] ); 4033 $check_attachments = true; 4034 } 4035 4036 if ( $object_types ) { 4037 $object_types = esc_sql( array_filter( $object_types, 'post_type_exists' ) ); 4038 } 4039 4040 $post_statuses = array( 'publish' ); 4041 4042 /** 4043 * Filters the post statuses for updating the term count. 4044 * 4045 * @since 5.7.0 4046 * 4047 * @param string[] $post_statuses List of post statuses to include in the count. Default is 'publish'. 4048 * @param WP_Taxonomy $taxonomy Current taxonomy object. 4049 */ 4050 $post_statuses = esc_sql( apply_filters( 'update_post_term_count_statuses', $post_statuses, $taxonomy ) ); 4051 4052 foreach ( (array) $terms as $term ) { 4053 $count = 0; 4054 4055 // Attachments can be 'inherit' status, we need to base count off the parent's status if so. 4056 if ( $check_attachments ) { 4057 // phpcs:ignore WordPress.DB.PreparedSQLPlaceholders.QuotedDynamicPlaceholderGeneration 4058 $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 ) ); 4059 } 4060 4061 if ( $object_types ) { 4062 // phpcs:ignore WordPress.DB.PreparedSQLPlaceholders.QuotedDynamicPlaceholderGeneration 4063 $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 ) ); 4064 } 4065 4066 /** This action is documented in wp-includes/taxonomy.php */ 4067 do_action( 'edit_term_taxonomy', $term, $taxonomy->name ); 4068 $wpdb->update( $wpdb->term_taxonomy, compact( 'count' ), array( 'term_taxonomy_id' => $term ) ); 4069 4070 /** This action is documented in wp-includes/taxonomy.php */ 4071 do_action( 'edited_term_taxonomy', $term, $taxonomy->name ); 4072 } 4073 } 4074 4075 /** 4076 * Updates term count based on number of objects. 4077 * 4078 * Default callback for the 'link_category' taxonomy. 4079 * 4080 * @since 3.3.0 4081 * 4082 * @global wpdb $wpdb WordPress database abstraction object. 4083 * 4084 * @param int[] $terms List of term taxonomy IDs. 4085 * @param WP_Taxonomy $taxonomy Current taxonomy object of terms. 4086 */ 4087 function _update_generic_term_count( $terms, $taxonomy ) { 4088 global $wpdb; 4089 4090 foreach ( (array) $terms as $term ) { 4091 $count = $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->term_relationships WHERE term_taxonomy_id = %d", $term ) ); 4092 4093 /** This action is documented in wp-includes/taxonomy.php */ 4094 do_action( 'edit_term_taxonomy', $term, $taxonomy->name ); 4095 $wpdb->update( $wpdb->term_taxonomy, compact( 'count' ), array( 'term_taxonomy_id' => $term ) ); 4096 4097 /** This action is documented in wp-includes/taxonomy.php */ 4098 do_action( 'edited_term_taxonomy', $term, $taxonomy->name ); 4099 } 4100 } 4101 4102 /** 4103 * Creates a new term for a term_taxonomy item that currently shares its term 4104 * with another term_taxonomy. 4105 * 4106 * @ignore 4107 * @since 4.2.0 4108 * @since 4.3.0 Introduced `$record` parameter. Also, `$term_id` and 4109 * `$term_taxonomy_id` can now accept objects. 4110 * 4111 * @global wpdb $wpdb WordPress database abstraction object. 4112 * 4113 * @param int|object $term_id ID of the shared term, or the shared term object. 4114 * @param int|object $term_taxonomy_id ID of the term_taxonomy item to receive a new term, or the term_taxonomy object 4115 * (corresponding to a row from the term_taxonomy table). 4116 * @param bool $record Whether to record data about the split term in the options table. The recording 4117 * process has the potential to be resource-intensive, so during batch operations 4118 * it can be beneficial to skip inline recording and do it just once, after the 4119 * batch is processed. Only set this to `false` if you know what you are doing. 4120 * Default: true. 4121 * @return int|WP_Error When the current term does not need to be split (or cannot be split on the current 4122 * database schema), `$term_id` is returned. When the term is successfully split, the 4123 * new term_id is returned. A WP_Error is returned for miscellaneous errors. 4124 */ 4125 function _split_shared_term( $term_id, $term_taxonomy_id, $record = true ) { 4126 global $wpdb; 4127 4128 if ( is_object( $term_id ) ) { 4129 $shared_term = $term_id; 4130 $term_id = (int) $shared_term->term_id; 4131 } 4132 4133 if ( is_object( $term_taxonomy_id ) ) { 4134 $term_taxonomy = $term_taxonomy_id; 4135 $term_taxonomy_id = (int) $term_taxonomy->term_taxonomy_id; 4136 } 4137 4138 // If there are no shared term_taxonomy rows, there's nothing to do here. 4139 $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 ) ); 4140 4141 if ( ! $shared_tt_count ) { 4142 return $term_id; 4143 } 4144 4145 /* 4146 * Verify that the term_taxonomy_id passed to the function is actually associated with the term_id. 4147 * If there's a mismatch, it may mean that the term is already split. Return the actual term_id from the db. 4148 */ 4149 $check_term_id = (int) $wpdb->get_var( $wpdb->prepare( "SELECT term_id FROM $wpdb->term_taxonomy WHERE term_taxonomy_id = %d", $term_taxonomy_id ) ); 4150 if ( $check_term_id !== $term_id ) { 4151 return $check_term_id; 4152 } 4153 4154 // Pull up data about the currently shared slug, which we'll use to populate the new one. 4155 if ( empty( $shared_term ) ) { 4156 $shared_term = $wpdb->get_row( $wpdb->prepare( "SELECT t.* FROM $wpdb->terms t WHERE t.term_id = %d", $term_id ) ); 4157 } 4158 4159 $new_term_data = array( 4160 'name' => $shared_term->name, 4161 'slug' => $shared_term->slug, 4162 'term_group' => $shared_term->term_group, 4163 ); 4164 4165 if ( false === $wpdb->insert( $wpdb->terms, $new_term_data ) ) { 4166 return new WP_Error( 'db_insert_error', __( 'Could not split shared term.' ), $wpdb->last_error ); 4167 } 4168 4169 $new_term_id = (int) $wpdb->insert_id; 4170 4171 // Update the existing term_taxonomy to point to the newly created term. 4172 $wpdb->update( 4173 $wpdb->term_taxonomy, 4174 array( 'term_id' => $new_term_id ), 4175 array( 'term_taxonomy_id' => $term_taxonomy_id ) 4176 ); 4177 4178 // Reassign child terms to the new parent. 4179 if ( empty( $term_taxonomy ) ) { 4180 $term_taxonomy = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->term_taxonomy WHERE term_taxonomy_id = %d", $term_taxonomy_id ) ); 4181 } 4182 4183 $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 ) ); 4184 if ( ! empty( $children_tt_ids ) ) { 4185 foreach ( $children_tt_ids as $child_tt_id ) { 4186 $wpdb->update( 4187 $wpdb->term_taxonomy, 4188 array( 'parent' => $new_term_id ), 4189 array( 'term_taxonomy_id' => $child_tt_id ) 4190 ); 4191 clean_term_cache( (int) $child_tt_id, '', false ); 4192 } 4193 } else { 4194 // If the term has no children, we must force its taxonomy cache to be rebuilt separately. 4195 clean_term_cache( $new_term_id, $term_taxonomy->taxonomy, false ); 4196 } 4197 4198 clean_term_cache( $term_id, $term_taxonomy->taxonomy, false ); 4199 4200 /* 4201 * Taxonomy cache clearing is delayed to avoid race conditions that may occur when 4202 * regenerating the taxonomy's hierarchy tree. 4203 */ 4204 $taxonomies_to_clean = array( $term_taxonomy->taxonomy ); 4205 4206 // Clean the cache for term taxonomies formerly shared with the current term. 4207 $shared_term_taxonomies = $wpdb->get_col( $wpdb->prepare( "SELECT taxonomy FROM $wpdb->term_taxonomy WHERE term_id = %d", $term_id ) ); 4208 $taxonomies_to_clean = array_merge( $taxonomies_to_clean, $shared_term_taxonomies ); 4209 4210 foreach ( $taxonomies_to_clean as $taxonomy_to_clean ) { 4211 clean_taxonomy_cache( $taxonomy_to_clean ); 4212 } 4213 4214 // Keep a record of term_ids that have been split, keyed by old term_id. See wp_get_split_term(). 4215 if ( $record ) { 4216 $split_term_data = get_option( '_split_terms', array() ); 4217 if ( ! isset( $split_term_data[ $term_id ] ) ) { 4218 $split_term_data[ $term_id ] = array(); 4219 } 4220 4221 $split_term_data[ $term_id ][ $term_taxonomy->taxonomy ] = $new_term_id; 4222 update_option( '_split_terms', $split_term_data ); 4223 } 4224 4225 // If we've just split the final shared term, set the "finished" flag. 4226 $shared_terms_exist = $wpdb->get_results( 4227 "SELECT tt.term_id, t.*, count(*) as term_tt_count FROM {$wpdb->term_taxonomy} tt 4228 LEFT JOIN {$wpdb->terms} t ON t.term_id = tt.term_id 4229 GROUP BY t.term_id 4230 HAVING term_tt_count > 1 4231 LIMIT 1" 4232 ); 4233 if ( ! $shared_terms_exist ) { 4234 update_option( 'finished_splitting_shared_terms', true ); 4235 } 4236 4237 /** 4238 * Fires after a previously shared taxonomy term is split into two separate terms. 4239 * 4240 * @since 4.2.0 4241 * 4242 * @param int $term_id ID of the formerly shared term. 4243 * @param int $new_term_id ID of the new term created for the $term_taxonomy_id. 4244 * @param int $term_taxonomy_id ID for the term_taxonomy row affected by the split. 4245 * @param string $taxonomy Taxonomy for the split term. 4246 */ 4247 do_action( 'split_shared_term', $term_id, $new_term_id, $term_taxonomy_id, $term_taxonomy->taxonomy ); 4248 4249 return $new_term_id; 4250 } 4251 4252 /** 4253 * Splits a batch of shared taxonomy terms. 4254 * 4255 * @since 4.3.0 4256 * 4257 * @global wpdb $wpdb WordPress database abstraction object. 4258 */ 4259 function _wp_batch_split_terms() { 4260 global $wpdb; 4261 4262 $lock_name = 'term_split.lock'; 4263 4264 // Try to lock. 4265 $lock_result = $wpdb->query( $wpdb->prepare( "INSERT IGNORE INTO `$wpdb->options` ( `option_name`, `option_value`, `autoload` ) VALUES (%s, %s, 'no') /* LOCK */", $lock_name, time() ) ); 4266 4267 if ( ! $lock_result ) { 4268 $lock_result = get_option( $lock_name ); 4269 4270 // Bail if we were unable to create a lock, or if the existing lock is still valid. 4271 if ( ! $lock_result || ( $lock_result > ( time() - HOUR_IN_SECONDS ) ) ) { 4272 wp_schedule_single_event( time() + ( 5 * MINUTE_IN_SECONDS ), 'wp_split_shared_term_batch' ); 4273 return; 4274 } 4275 } 4276 4277 // Update the lock, as by this point we've definitely got a lock, just need to fire the actions. 4278 update_option( $lock_name, time() ); 4279 4280 // Get a list of shared terms (those with more than one associated row in term_taxonomy). 4281 $shared_terms = $wpdb->get_results( 4282 "SELECT tt.term_id, t.*, count(*) as term_tt_count FROM {$wpdb->term_taxonomy} tt 4283 LEFT JOIN {$wpdb->terms} t ON t.term_id = tt.term_id 4284 GROUP BY t.term_id 4285 HAVING term_tt_count > 1 4286 LIMIT 10" 4287 ); 4288 4289 // No more terms, we're done here. 4290 if ( ! $shared_terms ) { 4291 update_option( 'finished_splitting_shared_terms', true ); 4292 delete_option( $lock_name ); 4293 return; 4294 } 4295 4296 // Shared terms found? We'll need to run this script again. 4297 wp_schedule_single_event( time() + ( 2 * MINUTE_IN_SECONDS ), 'wp_split_shared_term_batch' ); 4298 4299 // Rekey shared term array for faster lookups. 4300 $_shared_terms = array(); 4301 foreach ( $shared_terms as $shared_term ) { 4302 $term_id = (int) $shared_term->term_id; 4303 $_shared_terms[ $term_id ] = $shared_term; 4304 } 4305 $shared_terms = $_shared_terms; 4306 4307 // Get term taxonomy data for all shared terms. 4308 $shared_term_ids = implode( ',', array_keys( $shared_terms ) ); 4309 $shared_tts = $wpdb->get_results( "SELECT * FROM {$wpdb->term_taxonomy} WHERE `term_id` IN ({$shared_term_ids})" ); 4310 4311 // Split term data recording is slow, so we do it just once, outside the loop. 4312 $split_term_data = get_option( '_split_terms', array() ); 4313 $skipped_first_term = array(); 4314 $taxonomies = array(); 4315 foreach ( $shared_tts as $shared_tt ) { 4316 $term_id = (int) $shared_tt->term_id; 4317 4318 // Don't split the first tt belonging to a given term_id. 4319 if ( ! isset( $skipped_first_term[ $term_id ] ) ) { 4320 $skipped_first_term[ $term_id ] = 1; 4321 continue; 4322 } 4323 4324 if ( ! isset( $split_term_data[ $term_id ] ) ) { 4325 $split_term_data[ $term_id ] = array(); 4326 } 4327 4328 // Keep track of taxonomies whose hierarchies need flushing. 4329 if ( ! isset( $taxonomies[ $shared_tt->taxonomy ] ) ) { 4330 $taxonomies[ $shared_tt->taxonomy ] = 1; 4331 } 4332 4333 // Split the term. 4334 $split_term_data[ $term_id ][ $shared_tt->taxonomy ] = _split_shared_term( $shared_terms[ $term_id ], $shared_tt, false ); 4335 } 4336 4337 // Rebuild the cached hierarchy for each affected taxonomy. 4338 foreach ( array_keys( $taxonomies ) as $tax ) { 4339 delete_option( "{$tax}_children" ); 4340 _get_term_hierarchy( $tax ); 4341 } 4342 4343 update_option( '_split_terms', $split_term_data ); 4344 4345 delete_option( $lock_name ); 4346 } 4347 4348 /** 4349 * In order to avoid the _wp_batch_split_terms() job being accidentally removed, 4350 * checks that it's still scheduled while we haven't finished splitting terms. 4351 * 4352 * @ignore 4353 * @since 4.3.0 4354 */ 4355 function _wp_check_for_scheduled_split_terms() { 4356 if ( ! get_option( 'finished_splitting_shared_terms' ) && ! wp_next_scheduled( 'wp_split_shared_term_batch' ) ) { 4357 wp_schedule_single_event( time() + MINUTE_IN_SECONDS, 'wp_split_shared_term_batch' ); 4358 } 4359 } 4360 4361 /** 4362 * Checks default categories when a term gets split to see if any of them need to be updated. 4363 * 4364 * @ignore 4365 * @since 4.2.0 4366 * 4367 * @param int $term_id ID of the formerly shared term. 4368 * @param int $new_term_id ID of the new term created for the $term_taxonomy_id. 4369 * @param int $term_taxonomy_id ID for the term_taxonomy row affected by the split. 4370 * @param string $taxonomy Taxonomy for the split term. 4371 */ 4372 function _wp_check_split_default_terms( $term_id, $new_term_id, $term_taxonomy_id, $taxonomy ) { 4373 if ( 'category' !== $taxonomy ) { 4374 return; 4375 } 4376 4377 foreach ( array( 'default_category', 'default_link_category', 'default_email_category' ) as $option ) { 4378 if ( (int) get_option( $option, -1 ) === $term_id ) { 4379 update_option( $option, $new_term_id ); 4380 } 4381 } 4382 } 4383 4384 /** 4385 * Checks menu items when a term gets split to see if any of them need to be updated. 4386 * 4387 * @ignore 4388 * @since 4.2.0 4389 * 4390 * @global wpdb $wpdb WordPress database abstraction object. 4391 * 4392 * @param int $term_id ID of the formerly shared term. 4393 * @param int $new_term_id ID of the new term created for the $term_taxonomy_id. 4394 * @param int $term_taxonomy_id ID for the term_taxonomy row affected by the split. 4395 * @param string $taxonomy Taxonomy for the split term. 4396 */ 4397 function _wp_check_split_terms_in_menus( $term_id, $new_term_id, $term_taxonomy_id, $taxonomy ) { 4398 global $wpdb; 4399 $post_ids = $wpdb->get_col( 4400 $wpdb->prepare( 4401 "SELECT m1.post_id 4402 FROM {$wpdb->postmeta} AS m1 4403 INNER JOIN {$wpdb->postmeta} AS m2 ON ( m2.post_id = m1.post_id ) 4404 INNER JOIN {$wpdb->postmeta} AS m3 ON ( m3.post_id = m1.post_id ) 4405 WHERE ( m1.meta_key = '_menu_item_type' AND m1.meta_value = 'taxonomy' ) 4406 AND ( m2.meta_key = '_menu_item_object' AND m2.meta_value = %s ) 4407 AND ( m3.meta_key = '_menu_item_object_id' AND m3.meta_value = %d )", 4408 $taxonomy, 4409 $term_id 4410 ) 4411 ); 4412 4413 if ( $post_ids ) { 4414 foreach ( $post_ids as $post_id ) { 4415 update_post_meta( $post_id, '_menu_item_object_id', $new_term_id, $term_id ); 4416 } 4417 } 4418 } 4419 4420 /** 4421 * If the term being split is a nav_menu, changes associations. 4422 * 4423 * @ignore 4424 * @since 4.3.0 4425 * 4426 * @param int $term_id ID of the formerly shared term. 4427 * @param int $new_term_id ID of the new term created for the $term_taxonomy_id. 4428 * @param int $term_taxonomy_id ID for the term_taxonomy row affected by the split. 4429 * @param string $taxonomy Taxonomy for the split term. 4430 */ 4431 function _wp_check_split_nav_menu_terms( $term_id, $new_term_id, $term_taxonomy_id, $taxonomy ) { 4432 if ( 'nav_menu' !== $taxonomy ) { 4433 return; 4434 } 4435 4436 // Update menu locations. 4437 $locations = get_nav_menu_locations(); 4438 foreach ( $locations as $location => $menu_id ) { 4439 if ( $term_id === $menu_id ) { 4440 $locations[ $location ] = $new_term_id; 4441 } 4442 } 4443 set_theme_mod( 'nav_menu_locations', $locations ); 4444 } 4445 4446 /** 4447 * Gets data about terms that previously shared a single term_id, but have since been split. 4448 * 4449 * @since 4.2.0 4450 * 4451 * @param int $old_term_id Term ID. This is the old, pre-split term ID. 4452 * @return array Array of new term IDs, keyed by taxonomy. 4453 */ 4454 function wp_get_split_terms( $old_term_id ) { 4455 $split_terms = get_option( '_split_terms', array() ); 4456 4457 $terms = array(); 4458 if ( isset( $split_terms[ $old_term_id ] ) ) { 4459 $terms = $split_terms[ $old_term_id ]; 4460 } 4461 4462 return $terms; 4463 } 4464 4465 /** 4466 * Gets the new term ID corresponding to a previously split term. 4467 * 4468 * @since 4.2.0 4469 * 4470 * @param int $old_term_id Term ID. This is the old, pre-split term ID. 4471 * @param string $taxonomy Taxonomy that the term belongs to. 4472 * @return int|false If a previously split term is found corresponding to the old term_id and taxonomy, 4473 * the new term_id will be returned. If no previously split term is found matching 4474 * the parameters, returns false. 4475 */ 4476 function wp_get_split_term( $old_term_id, $taxonomy ) { 4477 $split_terms = wp_get_split_terms( $old_term_id ); 4478 4479 $term_id = false; 4480 if ( isset( $split_terms[ $taxonomy ] ) ) { 4481 $term_id = (int) $split_terms[ $taxonomy ]; 4482 } 4483 4484 return $term_id; 4485 } 4486 4487 /** 4488 * Determines whether a term is shared between multiple taxonomies. 4489 * 4490 * Shared taxonomy terms began to be split in 4.3, but failed cron tasks or 4491 * other delays in upgrade routines may cause shared terms to remain. 4492 * 4493 * @since 4.4.0 4494 * 4495 * @param int $term_id Term ID. 4496 * @return bool Returns false if a term is not shared between multiple taxonomies or 4497 * if splitting shared taxonomy terms is finished. 4498 */ 4499 function wp_term_is_shared( $term_id ) { 4500 global $wpdb; 4501 4502 if ( get_option( 'finished_splitting_shared_terms' ) ) { 4503 return false; 4504 } 4505 4506 $tt_count = $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->term_taxonomy WHERE term_id = %d", $term_id ) ); 4507 4508 return $tt_count > 1; 4509 } 4510 4511 /** 4512 * Generates a permalink for a taxonomy term archive. 4513 * 4514 * @since 2.5.0 4515 * 4516 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 4517 * 4518 * @param WP_Term|int|string $term The term object, ID, or slug whose link will be retrieved. 4519 * @param string $taxonomy Optional. Taxonomy. Default empty. 4520 * @return string|WP_Error URL of the taxonomy term archive on success, WP_Error if term does not exist. 4521 */ 4522 function get_term_link( $term, $taxonomy = '' ) { 4523 global $wp_rewrite; 4524 4525 if ( ! is_object( $term ) ) { 4526 if ( is_int( $term ) ) { 4527 $term = get_term( $term, $taxonomy ); 4528 } else { 4529 $term = get_term_by( 'slug', $term, $taxonomy ); 4530 } 4531 } 4532 4533 if ( ! is_object( $term ) ) { 4534 $term = new WP_Error( 'invalid_term', __( 'Empty Term.' ) ); 4535 } 4536 4537 if ( is_wp_error( $term ) ) { 4538 return $term; 4539 } 4540 4541 $taxonomy = $term->taxonomy; 4542 4543 $termlink = $wp_rewrite->get_extra_permastruct( $taxonomy ); 4544 4545 /** 4546 * Filters the permalink structure for a term before token replacement occurs. 4547 * 4548 * @since 4.9.0 4549 * 4550 * @param string $termlink The permalink structure for the term's taxonomy. 4551 * @param WP_Term $term The term object. 4552 */ 4553 $termlink = apply_filters( 'pre_term_link', $termlink, $term ); 4554 4555 $slug = $term->slug; 4556 $t = get_taxonomy( $taxonomy ); 4557 4558 if ( empty( $termlink ) ) { 4559 if ( 'category' === $taxonomy ) { 4560 $termlink = '?cat=' . $term->term_id; 4561 } elseif ( $t->query_var ) { 4562 $termlink = "?$t->query_var=$slug"; 4563 } else { 4564 $termlink = "?taxonomy=$taxonomy&term=$slug"; 4565 } 4566 $termlink = home_url( $termlink ); 4567 } else { 4568 if ( ! empty( $t->rewrite['hierarchical'] ) ) { 4569 $hierarchical_slugs = array(); 4570 $ancestors = get_ancestors( $term->term_id, $taxonomy, 'taxonomy' ); 4571 foreach ( (array) $ancestors as $ancestor ) { 4572 $ancestor_term = get_term( $ancestor, $taxonomy ); 4573 $hierarchical_slugs[] = $ancestor_term->slug; 4574 } 4575 $hierarchical_slugs = array_reverse( $hierarchical_slugs ); 4576 $hierarchical_slugs[] = $slug; 4577 $termlink = str_replace( "%$taxonomy%", implode( '/', $hierarchical_slugs ), $termlink ); 4578 } else { 4579 $termlink = str_replace( "%$taxonomy%", $slug, $termlink ); 4580 } 4581 $termlink = home_url( user_trailingslashit( $termlink, 'category' ) ); 4582 } 4583 4584 // Back compat filters. 4585 if ( 'post_tag' === $taxonomy ) { 4586 4587 /** 4588 * Filters the tag link. 4589 * 4590 * @since 2.3.0 4591 * @since 2.5.0 Deprecated in favor of {@see 'term_link'} filter. 4592 * @since 5.4.1 Restored (un-deprecated). 4593 * 4594 * @param string $termlink Tag link URL. 4595 * @param int $term_id Term ID. 4596 */ 4597 $termlink = apply_filters( 'tag_link', $termlink, $term->term_id ); 4598 } elseif ( 'category' === $taxonomy ) { 4599 4600 /** 4601 * Filters the category link. 4602 * 4603 * @since 1.5.0 4604 * @since 2.5.0 Deprecated in favor of {@see 'term_link'} filter. 4605 * @since 5.4.1 Restored (un-deprecated). 4606 * 4607 * @param string $termlink Category link URL. 4608 * @param int $term_id Term ID. 4609 */ 4610 $termlink = apply_filters( 'category_link', $termlink, $term->term_id ); 4611 } 4612 4613 /** 4614 * Filters the term link. 4615 * 4616 * @since 2.5.0 4617 * 4618 * @param string $termlink Term link URL. 4619 * @param WP_Term $term Term object. 4620 * @param string $taxonomy Taxonomy slug. 4621 */ 4622 return apply_filters( 'term_link', $termlink, $term, $taxonomy ); 4623 } 4624 4625 /** 4626 * Displays the taxonomies of a post with available options. 4627 * 4628 * This function can be used within the loop to display the taxonomies for a 4629 * post without specifying the Post ID. You can also use it outside the Loop to 4630 * display the taxonomies for a specific post. 4631 * 4632 * @since 2.5.0 4633 * 4634 * @param array $args { 4635 * Arguments about which post to use and how to format the output. Shares all of the arguments 4636 * supported by get_the_taxonomies(), in addition to the following. 4637 * 4638 * @type int|WP_Post $post Post ID or object to get taxonomies of. Default current post. 4639 * @type string $before Displays before the taxonomies. Default empty string. 4640 * @type string $sep Separates each taxonomy. Default is a space. 4641 * @type string $after Displays after the taxonomies. Default empty string. 4642 * } 4643 */ 4644 function the_taxonomies( $args = array() ) { 4645 $defaults = array( 4646 'post' => 0, 4647 'before' => '', 4648 'sep' => ' ', 4649 'after' => '', 4650 ); 4651 4652 $parsed_args = wp_parse_args( $args, $defaults ); 4653 4654 echo $parsed_args['before'] . implode( $parsed_args['sep'], get_the_taxonomies( $parsed_args['post'], $parsed_args ) ) . $parsed_args['after']; 4655 } 4656 4657 /** 4658 * Retrieves all taxonomies associated with a post. 4659 * 4660 * This function can be used within the loop. It will also return an array of 4661 * the taxonomies with links to the taxonomy and name. 4662 * 4663 * @since 2.5.0 4664 * 4665 * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post. 4666 * @param array $args { 4667 * Optional. Arguments about how to format the list of taxonomies. Default empty array. 4668 * 4669 * @type string $template Template for displaying a taxonomy label and list of terms. 4670 * Default is "Label: Terms." 4671 * @type string $term_template Template for displaying a single term in the list. Default is the term name 4672 * linked to its archive. 4673 * } 4674 * @return array List of taxonomies. 4675 */ 4676 function get_the_taxonomies( $post = 0, $args = array() ) { 4677 $post = get_post( $post ); 4678 4679 $args = wp_parse_args( 4680 $args, 4681 array( 4682 /* translators: %s: Taxonomy label, %l: List of terms formatted as per $term_template. */ 4683 'template' => __( '%s: %l.' ), 4684 'term_template' => '<a href="%1$s">%2$s</a>', 4685 ) 4686 ); 4687 4688 $taxonomies = array(); 4689 4690 if ( ! $post ) { 4691 return $taxonomies; 4692 } 4693 4694 foreach ( get_object_taxonomies( $post ) as $taxonomy ) { 4695 $t = (array) get_taxonomy( $taxonomy ); 4696 if ( empty( $t['label'] ) ) { 4697 $t['label'] = $taxonomy; 4698 } 4699 if ( empty( $t['args'] ) ) { 4700 $t['args'] = array(); 4701 } 4702 if ( empty( $t['template'] ) ) { 4703 $t['template'] = $args['template']; 4704 } 4705 if ( empty( $t['term_template'] ) ) { 4706 $t['term_template'] = $args['term_template']; 4707 } 4708 4709 $terms = get_object_term_cache( $post->ID, $taxonomy ); 4710 if ( false === $terms ) { 4711 $terms = wp_get_object_terms( $post->ID, $taxonomy, $t['args'] ); 4712 } 4713 $links = array(); 4714 4715 foreach ( $terms as $term ) { 4716 $links[] = wp_sprintf( $t['term_template'], esc_attr( get_term_link( $term ) ), $term->name ); 4717 } 4718 if ( $links ) { 4719 $taxonomies[ $taxonomy ] = wp_sprintf( $t['template'], $t['label'], $links, $terms ); 4720 } 4721 } 4722 return $taxonomies; 4723 } 4724 4725 /** 4726 * Retrieves all taxonomy names for the given post. 4727 * 4728 * @since 2.5.0 4729 * 4730 * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post. 4731 * @return string[] An array of all taxonomy names for the given post. 4732 */ 4733 function get_post_taxonomies( $post = 0 ) { 4734 $post = get_post( $post ); 4735 4736 return get_object_taxonomies( $post ); 4737 } 4738 4739 /** 4740 * Determines if the given object is associated with any of the given terms. 4741 * 4742 * The given terms are checked against the object's terms' term_ids, names and slugs. 4743 * Terms given as integers will only be checked against the object's terms' term_ids. 4744 * If no terms are given, determines if object is associated with any terms in the given taxonomy. 4745 * 4746 * @since 2.7.0 4747 * 4748 * @param int $object_id ID of the object (post ID, link ID, ...). 4749 * @param string $taxonomy Single taxonomy name. 4750 * @param int|string|int[]|string[] $terms Optional. Term ID, name, slug, or array of such 4751 * to check against. Default null. 4752 * @return bool|WP_Error WP_Error on input error. 4753 */ 4754 function is_object_in_term( $object_id, $taxonomy, $terms = null ) { 4755 $object_id = (int) $object_id; 4756 if ( ! $object_id ) { 4757 return new WP_Error( 'invalid_object', __( 'Invalid object ID.' ) ); 4758 } 4759 4760 $object_terms = get_object_term_cache( $object_id, $taxonomy ); 4761 if ( false === $object_terms ) { 4762 $object_terms = wp_get_object_terms( $object_id, $taxonomy, array( 'update_term_meta_cache' => false ) ); 4763 if ( is_wp_error( $object_terms ) ) { 4764 return $object_terms; 4765 } 4766 4767 wp_cache_set( $object_id, wp_list_pluck( $object_terms, 'term_id' ), "{$taxonomy}_relationships" ); 4768 } 4769 4770 if ( is_wp_error( $object_terms ) ) { 4771 return $object_terms; 4772 } 4773 if ( empty( $object_terms ) ) { 4774 return false; 4775 } 4776 if ( empty( $terms ) ) { 4777 return ( ! empty( $object_terms ) ); 4778 } 4779 4780 $terms = (array) $terms; 4781 4782 $ints = array_filter( $terms, 'is_int' ); 4783 if ( $ints ) { 4784 $strs = array_diff( $terms, $ints ); 4785 } else { 4786 $strs =& $terms; 4787 } 4788 4789 foreach ( $object_terms as $object_term ) { 4790 // If term is an int, check against term_ids only. 4791 if ( $ints && in_array( $object_term->term_id, $ints, true ) ) { 4792 return true; 4793 } 4794 4795 if ( $strs ) { 4796 // Only check numeric strings against term_id, to avoid false matches due to type juggling. 4797 $numeric_strs = array_map( 'intval', array_filter( $strs, 'is_numeric' ) ); 4798 if ( in_array( $object_term->term_id, $numeric_strs, true ) ) { 4799 return true; 4800 } 4801 4802 if ( in_array( $object_term->name, $strs, true ) ) { 4803 return true; 4804 } 4805 if ( in_array( $object_term->slug, $strs, true ) ) { 4806 return true; 4807 } 4808 } 4809 } 4810 4811 return false; 4812 } 4813 4814 /** 4815 * Determines if the given object type is associated with the given taxonomy. 4816 * 4817 * @since 3.0.0 4818 * 4819 * @param string $object_type Object type string. 4820 * @param string $taxonomy Single taxonomy name. 4821 * @return bool True if object is associated with the taxonomy, otherwise false. 4822 */ 4823 function is_object_in_taxonomy( $object_type, $taxonomy ) { 4824 $taxonomies = get_object_taxonomies( $object_type ); 4825 if ( empty( $taxonomies ) ) { 4826 return false; 4827 } 4828 return in_array( $taxonomy, $taxonomies, true ); 4829 } 4830 4831 /** 4832 * Gets an array of ancestor IDs for a given object. 4833 * 4834 * @since 3.1.0 4835 * @since 4.1.0 Introduced the `$resource_type` argument. 4836 * 4837 * @param int $object_id Optional. The ID of the object. Default 0. 4838 * @param string $object_type Optional. The type of object for which we'll be retrieving 4839 * ancestors. Accepts a post type or a taxonomy name. Default empty. 4840 * @param string $resource_type Optional. Type of resource $object_type is. Accepts 'post_type' 4841 * or 'taxonomy'. Default empty. 4842 * @return int[] An array of IDs of ancestors from lowest to highest in the hierarchy. 4843 */ 4844 function get_ancestors( $object_id = 0, $object_type = '', $resource_type = '' ) { 4845 $object_id = (int) $object_id; 4846 4847 $ancestors = array(); 4848 4849 if ( empty( $object_id ) ) { 4850 4851 /** This filter is documented in wp-includes/taxonomy.php */ 4852 return apply_filters( 'get_ancestors', $ancestors, $object_id, $object_type, $resource_type ); 4853 } 4854 4855 if ( ! $resource_type ) { 4856 if ( is_taxonomy_hierarchical( $object_type ) ) { 4857 $resource_type = 'taxonomy'; 4858 } elseif ( post_type_exists( $object_type ) ) { 4859 $resource_type = 'post_type'; 4860 } 4861 } 4862 4863 if ( 'taxonomy' === $resource_type ) { 4864 $term = get_term( $object_id, $object_type ); 4865 while ( ! is_wp_error( $term ) && ! empty( $term->parent ) && ! in_array( $term->parent, $ancestors, true ) ) { 4866 $ancestors[] = (int) $term->parent; 4867 $term = get_term( $term->parent, $object_type ); 4868 } 4869 } elseif ( 'post_type' === $resource_type ) { 4870 $ancestors = get_post_ancestors( $object_id ); 4871 } 4872 4873 /** 4874 * Filters a given object's ancestors. 4875 * 4876 * @since 3.1.0 4877 * @since 4.1.1 Introduced the `$resource_type` parameter. 4878 * 4879 * @param int[] $ancestors An array of IDs of object ancestors. 4880 * @param int $object_id Object ID. 4881 * @param string $object_type Type of object. 4882 * @param string $resource_type Type of resource $object_type is. 4883 */ 4884 return apply_filters( 'get_ancestors', $ancestors, $object_id, $object_type, $resource_type ); 4885 } 4886 4887 /** 4888 * Returns the term's parent's term ID. 4889 * 4890 * @since 3.1.0 4891 * 4892 * @param int $term_id Term ID. 4893 * @param string $taxonomy Taxonomy name. 4894 * @return int|false Parent term ID on success, false on failure. 4895 */ 4896 function wp_get_term_taxonomy_parent_id( $term_id, $taxonomy ) { 4897 $term = get_term( $term_id, $taxonomy ); 4898 if ( ! $term || is_wp_error( $term ) ) { 4899 return false; 4900 } 4901 return (int) $term->parent; 4902 } 4903 4904 /** 4905 * Checks the given subset of the term hierarchy for hierarchy loops. 4906 * Prevents loops from forming and breaks those that it finds. 4907 * 4908 * Attached to the {@see 'wp_update_term_parent'} filter. 4909 * 4910 * @since 3.1.0 4911 * 4912 * @param int $parent `term_id` of the parent for the term we're checking. 4913 * @param int $term_id The term we're checking. 4914 * @param string $taxonomy The taxonomy of the term we're checking. 4915 * @return int The new parent for the term. 4916 */ 4917 function wp_check_term_hierarchy_for_loops( $parent, $term_id, $taxonomy ) { 4918 // Nothing fancy here - bail. 4919 if ( ! $parent ) { 4920 return 0; 4921 } 4922 4923 // Can't be its own parent. 4924 if ( $parent === $term_id ) { 4925 return 0; 4926 } 4927 4928 // Now look for larger loops. 4929 $loop = wp_find_hierarchy_loop( 'wp_get_term_taxonomy_parent_id', $term_id, $parent, array( $taxonomy ) ); 4930 if ( ! $loop ) { 4931 return $parent; // No loop. 4932 } 4933 4934 // Setting $parent to the given value causes a loop. 4935 if ( isset( $loop[ $term_id ] ) ) { 4936 return 0; 4937 } 4938 4939 // There's a loop, but it doesn't contain $term_id. Break the loop. 4940 foreach ( array_keys( $loop ) as $loop_member ) { 4941 wp_update_term( $loop_member, $taxonomy, array( 'parent' => 0 ) ); 4942 } 4943 4944 return $parent; 4945 } 4946 4947 /** 4948 * Determines whether a taxonomy is considered "viewable". 4949 * 4950 * @since 5.1.0 4951 * 4952 * @param string|WP_Taxonomy $taxonomy Taxonomy name or object. 4953 * @return bool Whether the taxonomy should be considered viewable. 4954 */ 4955 function is_taxonomy_viewable( $taxonomy ) { 4956 if ( is_scalar( $taxonomy ) ) { 4957 $taxonomy = get_taxonomy( $taxonomy ); 4958 if ( ! $taxonomy ) { 4959 return false; 4960 } 4961 } 4962 4963 return $taxonomy->publicly_queryable; 4964 } 4965 4966 /** 4967 * Sets the last changed time for the 'terms' cache group. 4968 * 4969 * @since 5.0.0 4970 */ 4971 function wp_cache_set_terms_last_changed() { 4972 wp_cache_set( 'last_changed', microtime(), 'terms' ); 4973 } 4974 4975 /** 4976 * Aborts calls to term meta if it is not supported. 4977 * 4978 * @since 5.0.0 4979 * 4980 * @param mixed $check Skip-value for whether to proceed term meta function execution. 4981 * @return mixed Original value of $check, or false if term meta is not supported. 4982 */ 4983 function wp_check_term_meta_support_prefilter( $check ) { 4984 if ( get_option( 'db_version' ) < 34370 ) { 4985 return false; 4986 } 4987 4988 return $check; 4989 }
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