Should * result in Array('category', 'post_tag') * * @since 2.3.0 * * @uses $wp_taxonomies * * @param array|string|object $object Name of the type of taxonomy object, or an object (row from posts) * @param string $output The type of output to return, either taxonomy 'names' or 'objects'. 'names' is the default. * @return array The names of all taxonomy of $object_type. */ function get_object_taxonomies($object, $output = 'names') { global $wp_taxonomies; if ( is_object($object) ) { if ( $object->post_type == 'attachment' ) return get_attachment_taxonomies($object); $object = $object->post_type; } $object = (array) $object; $taxonomies = array(); foreach ( (array) $wp_taxonomies as $tax_name => $tax_obj ) { if ( array_intersect($object, (array) $tax_obj->object_type) ) { if ( 'names' == $output ) $taxonomies[] = $tax_name; else $taxonomies[ $tax_name ] = $tax_obj; } } return $taxonomies; } /** * Retrieves the taxonomy object of $taxonomy. * * The get_taxonomy function will first check that the parameter string given * is a taxonomy object and if it is, it will return it. * * @since 2.3.0 * * @uses $wp_taxonomies * @uses taxonomy_exists() Checks whether taxonomy exists * * @param string $taxonomy Name of taxonomy object to return * @return object|bool The Taxonomy Object or false if $taxonomy doesn't exist */ function get_taxonomy( $taxonomy ) { global $wp_taxonomies; if ( ! taxonomy_exists( $taxonomy ) ) return false; return $wp_taxonomies[$taxonomy]; } /** * Checks that the taxonomy name exists. * * Formerly is_taxonomy(), introduced in 2.3.0. * * @since 3.0.0 * * @uses $wp_taxonomies * * @param string $taxonomy Name of taxonomy object * @return bool Whether the taxonomy exists. */ function taxonomy_exists( $taxonomy ) { global $wp_taxonomies; return isset( $wp_taxonomies[$taxonomy] ); } /** * Whether the taxonomy object is hierarchical. * * Checks to make sure that the taxonomy is an object first. Then Gets the * object, and finally returns the hierarchical value in the object. * * A false return value might also mean that the taxonomy does not exist. * * @since 2.3.0 * * @uses taxonomy_exists() Checks whether taxonomy exists * @uses get_taxonomy() Used to get the taxonomy object * * @param string $taxonomy Name of taxonomy object * @return bool Whether the taxonomy is hierarchical */ function is_taxonomy_hierarchical($taxonomy) { if ( ! taxonomy_exists($taxonomy) ) return false; $taxonomy = get_taxonomy($taxonomy); return $taxonomy->hierarchical; } /** * Create or modify a taxonomy object. Do not use before init. * * A simple function for creating or modifying a taxonomy object based on the * parameters given. The function will accept an array (third optional * parameter), along with strings for the taxonomy name and another string for * the object type. * * Nothing is returned, so expect error maybe or use taxonomy_exists() to check * whether taxonomy exists. * * Optional $args contents: * * - label - Name of the taxonomy shown in the menu. Usually plural. If not set, labels['name'] will be used. * - labels - An array of labels for this taxonomy. * * By default tag labels are used for non-hierarchical types and category labels for hierarchical ones. * * You can see accepted values in {@link get_taxonomy_labels()}. * - description - A short descriptive summary of what the taxonomy is for. Defaults to blank. * - public - If the taxonomy should be publicly queryable; //@TODO not implemented. * * Defaults to true. * - hierarchical - Whether the taxonomy is hierarchical (e.g. category). Defaults to false. * - show_ui -Whether to generate a default UI for managing this taxonomy in the admin. * * If not set, the default is inherited from public. * - show_in_menu - Where to show the taxonomy in the admin menu. * * If true, the taxonomy is shown as a submenu of the object type menu. * * If false, no menu is shown. * * show_ui must be true. * * If not set, the default is inherited from show_ui. * - show_in_nav_menus - Makes this taxonomy available for selection in navigation menus. * * If not set, the default is inherited from public. * - show_tagcloud - Whether to list the taxonomy in the Tag Cloud Widget. * * If not set, the default is inherited from show_ui. * - show_admin_column - Whether to display a column for the taxonomy on its post type listing screens. * * Defaults to false. * - meta_box_cb - Provide a callback function for the meta box display. * * If not set, defaults to post_categories_meta_box for hierarchical taxonomies * and post_tags_meta_box for non-hierarchical. * * If false, no meta box is shown. * - capabilities - Array of capabilities for this taxonomy. * * You can see accepted values in this function. * - rewrite - Triggers the handling of rewrites for this taxonomy. Defaults to true, using $taxonomy as slug. * * To prevent rewrite, set to false. * * To specify rewrite rules, an array can be passed with any of these keys * * 'slug' => string Customize the permastruct slug. Defaults to $taxonomy key * * 'with_front' => bool Should the permastruct be prepended with WP_Rewrite::$front. Defaults to true. * * 'hierarchical' => bool Either hierarchical rewrite tag or not. Defaults to false. * * 'ep_mask' => const Assign an endpoint mask. * * If not specified, defaults to EP_NONE. * - query_var - Sets the query_var key for this taxonomy. Defaults to $taxonomy key * * If false, a taxonomy cannot be loaded at ?{query_var}={term_slug} * * If specified as a string, the query ?{query_var_string}={term_slug} will be valid. * - update_count_callback - Works much like a hook, in that it will be called when the count is updated. * * Defaults to _update_post_term_count() for taxonomies attached to post types, which then confirms * that the objects are published before counting them. * * Defaults to _update_generic_term_count() for taxonomies attached to other object types, such as links. * - _builtin - true if this taxonomy is a native or "built-in" taxonomy. THIS IS FOR INTERNAL USE ONLY! * * @since 2.3.0 * @uses $wp_taxonomies Inserts new taxonomy object into the list * @uses $wp Adds query vars * * @param string $taxonomy Taxonomy key, must not exceed 32 characters. * @param array|string $object_type Name of the object type for the taxonomy object. * @param array|string $args See optional args description above. * @return null|WP_Error WP_Error if errors, otherwise null. */ function register_taxonomy( $taxonomy, $object_type, $args = array() ) { global $wp_taxonomies, $wp; if ( ! is_array( $wp_taxonomies ) ) $wp_taxonomies = array(); $defaults = array( 'labels' => array(), 'description' => '', 'public' => true, 'hierarchical' => false, 'show_ui' => null, 'show_in_menu' => null, 'show_in_nav_menus' => null, 'show_tagcloud' => null, 'show_admin_column' => false, 'meta_box_cb' => null, 'capabilities' => array(), 'rewrite' => true, 'query_var' => $taxonomy, 'update_count_callback' => '', '_builtin' => false, ); $args = wp_parse_args( $args, $defaults ); if ( strlen( $taxonomy ) > 32 ) return new WP_Error( 'taxonomy_too_long', __( 'Taxonomies cannot exceed 32 characters in length' ) ); if ( false !== $args['query_var'] && ! empty( $wp ) ) { if ( true === $args['query_var'] ) $args['query_var'] = $taxonomy; else $args['query_var'] = sanitize_title_with_dashes( $args['query_var'] ); $wp->add_query_var( $args['query_var'] ); } if ( false !== $args['rewrite'] && ( is_admin() || '' != get_option( 'permalink_structure' ) ) ) { $args['rewrite'] = wp_parse_args( $args['rewrite'], array( 'with_front' => true, 'hierarchical' => false, 'ep_mask' => EP_NONE, ) ); if ( empty( $args['rewrite']['slug'] ) ) $args['rewrite']['slug'] = sanitize_title_with_dashes( $taxonomy ); if ( $args['hierarchical'] && $args['rewrite']['hierarchical'] ) $tag = '(.+?)'; else $tag = '([^/]+)'; add_rewrite_tag( "%$taxonomy%", $tag, $args['query_var'] ? "{$args['query_var']}=" : "taxonomy=$taxonomy&term=" ); add_permastruct( $taxonomy, "{$args['rewrite']['slug']}/%$taxonomy%", $args['rewrite'] ); } // If not set, default to the setting for public. if ( null === $args['show_ui'] ) $args['show_ui'] = $args['public']; // If not set, default to the setting for show_ui. if ( null === $args['show_in_menu' ] || ! $args['show_ui'] ) $args['show_in_menu' ] = $args['show_ui']; // If not set, default to the setting for public. if ( null === $args['show_in_nav_menus'] ) $args['show_in_nav_menus'] = $args['public']; // If not set, default to the setting for show_ui. if ( null === $args['show_tagcloud'] ) $args['show_tagcloud'] = $args['show_ui']; $default_caps = array( 'manage_terms' => 'manage_categories', 'edit_terms' => 'manage_categories', 'delete_terms' => 'manage_categories', 'assign_terms' => 'edit_posts', ); $args['cap'] = (object) array_merge( $default_caps, $args['capabilities'] ); unset( $args['capabilities'] ); $args['name'] = $taxonomy; $args['object_type'] = array_unique( (array) $object_type ); $args['labels'] = get_taxonomy_labels( (object) $args ); $args['label'] = $args['labels']->name; // If not set, use the default meta box if ( null === $args['meta_box_cb'] ) { if ( $args['hierarchical'] ) $args['meta_box_cb'] = 'post_categories_meta_box'; else $args['meta_box_cb'] = 'post_tags_meta_box'; } $wp_taxonomies[ $taxonomy ] = (object) $args; // register callback handling for metabox add_filter( 'wp_ajax_add-' . $taxonomy, '_wp_ajax_add_hierarchical_term' ); /** * Fires after a taxonomy is registered. * * @since 3.3.0 * * @param string $taxonomy Taxonomy slug. * @param array|string $object_type Object type or array of object types. * @param array|string $args Array or string of taxonomy registration arguments. */ do_action( 'registered_taxonomy', $taxonomy, $object_type, $args ); } /** * Builds an object with all taxonomy labels out of a taxonomy object * * Accepted keys of the label array in the taxonomy object: * - name - general name for the taxonomy, usually plural. The same as and overridden by $tax->label. Default is Tags/Categories * - singular_name - name for one object of this taxonomy. Default is Tag/Category * - search_items - Default is Search Tags/Search Categories * - popular_items - This string isn't used on hierarchical taxonomies. Default is Popular Tags * - all_items - Default is All Tags/All Categories * - parent_item - This string isn't used on non-hierarchical taxonomies. In hierarchical ones the default is Parent Category * - parent_item_colon - The same as parent_item, but with colon : in the end * - edit_item - Default is Edit Tag/Edit Category * - view_item - Default is View Tag/View Category * - update_item - Default is Update Tag/Update Category * - add_new_item - Default is Add New Tag/Add New Category * - new_item_name - Default is New Tag Name/New Category Name * - separate_items_with_commas - This string isn't used on hierarchical taxonomies. Default is "Separate tags with commas", used in the meta box. * - add_or_remove_items - This string isn't used on hierarchical taxonomies. Default is "Add or remove tags", used in the meta box when JavaScript is disabled. * - choose_from_most_used - This string isn't used on hierarchical taxonomies. Default is "Choose from the most used tags", used in the meta box. * - not_found - This string isn't used on hierarchical taxonomies. Default is "No tags found", used in the meta box. * * Above, the first default value is for non-hierarchical taxonomies (like tags) and the second one is for hierarchical taxonomies (like categories). * * @since 3.0.0 * @param object $tax Taxonomy object * @return object object with all the labels as member variables */ function get_taxonomy_labels( $tax ) { $tax->labels = (array) $tax->labels; if ( isset( $tax->helps ) && empty( $tax->labels['separate_items_with_commas'] ) ) $tax->labels['separate_items_with_commas'] = $tax->helps; if ( isset( $tax->no_tagcloud ) && empty( $tax->labels['not_found'] ) ) $tax->labels['not_found'] = $tax->no_tagcloud; $nohier_vs_hier_defaults = array( 'name' => array( _x( 'Tags', 'taxonomy general name' ), _x( 'Categories', 'taxonomy general name' ) ), 'singular_name' => array( _x( 'Tag', 'taxonomy singular name' ), _x( 'Category', 'taxonomy singular name' ) ), 'search_items' => array( __( 'Search Tags' ), __( 'Search Categories' ) ), 'popular_items' => array( __( 'Popular Tags' ), null ), 'all_items' => array( __( 'All Tags' ), __( 'All Categories' ) ), 'parent_item' => array( null, __( 'Parent Category' ) ), 'parent_item_colon' => array( null, __( 'Parent Category:' ) ), 'edit_item' => array( __( 'Edit Tag' ), __( 'Edit Category' ) ), 'view_item' => array( __( 'View Tag' ), __( 'View Category' ) ), 'update_item' => array( __( 'Update Tag' ), __( 'Update Category' ) ), 'add_new_item' => array( __( 'Add New Tag' ), __( 'Add New Category' ) ), 'new_item_name' => array( __( 'New Tag Name' ), __( 'New Category Name' ) ), 'separate_items_with_commas' => array( __( 'Separate tags with commas' ), null ), 'add_or_remove_items' => array( __( 'Add or remove tags' ), null ), 'choose_from_most_used' => array( __( 'Choose from the most used tags' ), null ), 'not_found' => array( __( 'No tags found.' ), null ), ); $nohier_vs_hier_defaults['menu_name'] = $nohier_vs_hier_defaults['name']; return _get_custom_object_labels( $tax, $nohier_vs_hier_defaults ); } /** * Add an already registered taxonomy to an object type. * * @since 3.0.0 * @uses $wp_taxonomies Modifies taxonomy object * * @param string $taxonomy Name of taxonomy object * @param string $object_type Name of the object type * @return bool True if successful, false if not */ function register_taxonomy_for_object_type( $taxonomy, $object_type) { global $wp_taxonomies; if ( !isset($wp_taxonomies[$taxonomy]) ) return false; if ( ! get_post_type_object($object_type) ) return false; if ( ! in_array( $object_type, $wp_taxonomies[$taxonomy]->object_type ) ) $wp_taxonomies[$taxonomy]->object_type[] = $object_type; return true; } /** * Remove an already registered taxonomy from an object type. * * @since 3.7.0 * * @param string $taxonomy Name of taxonomy object. * @param string $object_type Name of the object type. * @return bool True if successful, false if not. */ function unregister_taxonomy_for_object_type( $taxonomy, $object_type ) { global $wp_taxonomies; if ( ! isset( $wp_taxonomies[ $taxonomy ] ) ) return false; if ( ! get_post_type_object( $object_type ) ) return false; $key = array_search( $object_type, $wp_taxonomies[ $taxonomy ]->object_type, true ); if ( false === $key ) return false; unset( $wp_taxonomies[ $taxonomy ]->object_type[ $key ] ); return true; } // // Term API // /** * Retrieve object_ids of valid taxonomy and term. * * The strings of $taxonomies must exist before this function will continue. On * failure of finding a valid taxonomy, it will return an WP_Error class, kind * of like Exceptions in PHP 5, except you can't catch them. Even so, you can * still test for the WP_Error class and get the error message. * * The $terms aren't checked the same as $taxonomies, but still need to exist * for $object_ids to be returned. * * It is possible to change the order that object_ids is returned by either * using PHP sort family functions or using the database by using $args with * either ASC or DESC array. The value should be in the key named 'order'. * * @since 2.3.0 * * @uses $wpdb * @uses wp_parse_args() Creates an array from string $args. * * @param int|array $term_ids Term id or array of term ids of terms that will be used * @param string|array $taxonomies String of taxonomy name or Array of string values of taxonomy names * @param array|string $args Change the order of the object_ids, either ASC or DESC * @return WP_Error|array If the taxonomy does not exist, then WP_Error will be returned. On success * the array can be empty meaning that there are no $object_ids found or it will return the $object_ids found. */ function get_objects_in_term( $term_ids, $taxonomies, $args = array() ) { global $wpdb; if ( ! is_array( $term_ids ) ) $term_ids = array( $term_ids ); if ( ! is_array( $taxonomies ) ) $taxonomies = array( $taxonomies ); foreach ( (array) $taxonomies as $taxonomy ) { if ( ! taxonomy_exists( $taxonomy ) ) return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy' ) ); } $defaults = array( 'order' => 'ASC' ); $args = wp_parse_args( $args, $defaults ); extract( $args, EXTR_SKIP ); $order = ( 'desc' == strtolower( $order ) ) ? 'DESC' : 'ASC'; $term_ids = array_map('intval', $term_ids ); $taxonomies = "'" . implode( "', '", $taxonomies ) . "'"; $term_ids = "'" . implode( "', '", $term_ids ) . "'"; $object_ids = $wpdb->get_col("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"); if ( ! $object_ids ) return array(); return $object_ids; } /** * Given a taxonomy query, generates SQL to be appended to a main query. * * @since 3.1.0 * * @see WP_Tax_Query * * @param array $tax_query A compact tax query * @param string $primary_table * @param string $primary_id_column * @return array */ function get_tax_sql( $tax_query, $primary_table, $primary_id_column ) { $tax_query_obj = new WP_Tax_Query( $tax_query ); return $tax_query_obj->get_sql( $primary_table, $primary_id_column ); } /** * Container class for a multiple taxonomy query. * * @since 3.1.0 */ class WP_Tax_Query { /** * List of taxonomy queries. A single taxonomy query is an associative array: * - 'taxonomy' string The taxonomy being queried * - 'terms' string|array The list of terms * - 'field' string (optional) Which term field is being used. * Possible values: 'term_id', 'slug' or 'name' * Default: 'term_id' * - 'operator' string (optional) * Possible values: 'AND', 'IN' or 'NOT IN'. * Default: 'IN' * - 'include_children' bool (optional) Whether to include child terms. * Default: true * * @since 3.1.0 * @access public * @var array */ public $queries = array(); /** * The relation between the queries. Can be one of 'AND' or 'OR'. * * @since 3.1.0 * @access public * @var string */ public $relation; /** * Standard response when the query should not return any rows. * * @since 3.2.0 * @access private * @var string */ private static $no_results = array( 'join' => '', 'where' => ' AND 0 = 1' ); /** * Constructor. * * Parses a compact tax query and sets defaults. * * @since 3.1.0 * @access public * * @param array $tax_query A compact tax query: * array( * 'relation' => 'OR', * array( * 'taxonomy' => 'tax1', * 'terms' => array( 'term1', 'term2' ), * 'field' => 'slug', * ), * array( * 'taxonomy' => 'tax2', * 'terms' => array( 'term-a', 'term-b' ), * 'field' => 'slug', * ), * ) */ public function __construct( $tax_query ) { if ( isset( $tax_query['relation'] ) && strtoupper( $tax_query['relation'] ) == 'OR' ) { $this->relation = 'OR'; } else { $this->relation = 'AND'; } $defaults = array( 'taxonomy' => '', 'terms' => array(), 'include_children' => true, 'field' => 'term_id', 'operator' => 'IN', ); foreach ( $tax_query as $query ) { if ( ! is_array( $query ) ) continue; $query = array_merge( $defaults, $query ); $query['terms'] = (array) $query['terms']; $this->queries[] = $query; } } /** * Generates SQL clauses to be appended to a main query. * * @since 3.1.0 * @access public * * @param string $primary_table * @param string $primary_id_column * @return array */ public function get_sql( $primary_table, $primary_id_column ) { global $wpdb; $join = ''; $where = array(); $i = 0; $count = count( $this->queries ); foreach ( $this->queries as $index => $query ) { $this->clean_query( $query ); if ( is_wp_error( $query ) ) return self::$no_results; extract( $query ); if ( 'IN' == $operator ) { if ( empty( $terms ) ) { if ( 'OR' == $this->relation ) { if ( ( $index + 1 === $count ) && empty( $where ) ) return self::$no_results; continue; } else { return self::$no_results; } } $terms = implode( ',', $terms ); $alias = $i ? 'tt' . $i : $wpdb->term_relationships; $join .= " INNER JOIN $wpdb->term_relationships"; $join .= $i ? " AS $alias" : ''; $join .= " ON ($primary_table.$primary_id_column = $alias.object_id)"; $where[] = "$alias.term_taxonomy_id $operator ($terms)"; } elseif ( 'NOT IN' == $operator ) { if ( empty( $terms ) ) continue; $terms = implode( ',', $terms ); $where[] = "$primary_table.$primary_id_column NOT IN ( SELECT object_id FROM $wpdb->term_relationships WHERE term_taxonomy_id IN ($terms) )"; } elseif ( 'AND' == $operator ) { if ( empty( $terms ) ) continue; $num_terms = count( $terms ); $terms = implode( ',', $terms ); $where[] = "( SELECT COUNT(1) FROM $wpdb->term_relationships WHERE term_taxonomy_id IN ($terms) AND object_id = $primary_table.$primary_id_column ) = $num_terms"; } $i++; } if ( ! empty( $where ) ) $where = ' AND ( ' . implode( " $this->relation ", $where ) . ' )'; else $where = ''; return compact( 'join', 'where' ); } /** * Validates a single query. * * @since 3.2.0 * @access private * * @param array &$query The single query */ private function clean_query( &$query ) { if ( ! taxonomy_exists( $query['taxonomy'] ) ) { $query = new WP_Error( 'Invalid taxonomy' ); return; } $query['terms'] = array_unique( (array) $query['terms'] ); if ( is_taxonomy_hierarchical( $query['taxonomy'] ) && $query['include_children'] ) { $this->transform_query( $query, 'term_id' ); if ( is_wp_error( $query ) ) return; $children = array(); foreach ( $query['terms'] as $term ) { $children = array_merge( $children, get_term_children( $term, $query['taxonomy'] ) ); $children[] = $term; } $query['terms'] = $children; } $this->transform_query( $query, 'term_taxonomy_id' ); } /** * Transforms a single query, from one field to another. * * @since 3.2.0 * * @param array &$query The single query * @param string $resulting_field The resulting field */ public function transform_query( &$query, $resulting_field ) { global $wpdb; if ( empty( $query['terms'] ) ) return; if ( $query['field'] == $resulting_field ) return; $resulting_field = sanitize_key( $resulting_field ); switch ( $query['field'] ) { case 'slug': case 'name': $terms = "'" . implode( "','", array_map( 'sanitize_title_for_query', $query['terms'] ) ) . "'"; $terms = $wpdb->get_col( " SELECT $wpdb->term_taxonomy.$resulting_field FROM $wpdb->term_taxonomy INNER JOIN $wpdb->terms USING (term_id) WHERE taxonomy = '{$query['taxonomy']}' AND $wpdb->terms.{$query['field']} IN ($terms) " ); break; case 'term_taxonomy_id': $terms = implode( ',', array_map( 'intval', $query['terms'] ) ); $terms = $wpdb->get_col( " SELECT $resulting_field FROM $wpdb->term_taxonomy WHERE term_taxonomy_id IN ($terms) " ); break; default: $terms = implode( ',', array_map( 'intval', $query['terms'] ) ); $terms = $wpdb->get_col( " SELECT $resulting_field FROM $wpdb->term_taxonomy WHERE taxonomy = '{$query['taxonomy']}' AND term_id IN ($terms) " ); } if ( 'AND' == $query['operator'] && count( $terms ) < count( $query['terms'] ) ) { $query = new WP_Error( 'Inexistent terms' ); return; } $query['terms'] = $terms; $query['field'] = $resulting_field; } } /** * Get all Term data from database by Term ID. * * The usage of the get_term function is to apply filters to a term object. It * is possible to get a term object from the database before applying the * filters. * * $term ID must be part of $taxonomy, to get from the database. Failure, might * be able to be captured by the hooks. Failure would be the same value as $wpdb * returns for the get_row method. * * There are two hooks, one is specifically for each term, named 'get_term', and * the second is for the taxonomy name, 'term_$taxonomy'. Both hooks gets the * term object, and the taxonomy name as parameters. Both hooks are expected to * return a Term object. * * 'get_term' hook - Takes two parameters the term Object and the taxonomy name. * Must return term object. Used in get_term() as a catch-all filter for every * $term. * * 'get_$taxonomy' hook - Takes two parameters the term Object and the taxonomy * name. Must return term object. $taxonomy will be the taxonomy name, so for * example, if 'category', it would be 'get_category' as the filter name. Useful * for custom taxonomies or plugging into default taxonomies. * * @since 2.3.0 * * @uses $wpdb * @uses sanitize_term() Cleanses the term based on $filter context before returning. * @see sanitize_term_field() The $context param lists the available values for get_term_by() $filter param. * * @param int|object $term If integer, will get from database. If object will apply filters and return $term. * @param string $taxonomy Taxonomy name that $term is part of. * @param string $output Constant OBJECT, ARRAY_A, or ARRAY_N * @param string $filter Optional, default is raw or no WordPress defined filter will applied. * @return mixed|null|WP_Error Term Row from database. Will return null if $term is empty. If taxonomy does not * exist then WP_Error will be returned. */ function get_term($term, $taxonomy, $output = OBJECT, $filter = 'raw') { global $wpdb; if ( empty($term) ) { $error = new WP_Error('invalid_term', __('Empty Term')); return $error; } if ( ! taxonomy_exists($taxonomy) ) { $error = new WP_Error('invalid_taxonomy', __('Invalid taxonomy')); return $error; } if ( is_object($term) && empty($term->filter) ) { wp_cache_add($term->term_id, $term, $taxonomy); $_term = $term; } else { if ( is_object($term) ) $term = $term->term_id; if ( !$term = (int) $term ) return null; if ( ! $_term = wp_cache_get($term, $taxonomy) ) { $_term = $wpdb->get_row( $wpdb->prepare( "SELECT t.*, tt.* FROM $wpdb->terms AS t INNER JOIN $wpdb->term_taxonomy AS tt ON t.term_id = tt.term_id WHERE tt.taxonomy = %s AND t.term_id = %d LIMIT 1", $taxonomy, $term) ); if ( ! $_term ) return null; wp_cache_add($term, $_term, $taxonomy); } } /** * Filter a term. * * @since 2.3.0 * * @param int|object $_term Term object or ID. * @param string $taxonomy The taxonomy slug. */ $_term = apply_filters( 'get_term', $_term, $taxonomy ); /** * Filter a taxonomy. * * The dynamic portion of the filter name, $taxonomy, refers * to the taxonomy slug. * * @since 2.3.0 * * @param int|object $_term Term object or ID. * @param string $taxonomy The taxonomy slug. */ $_term = apply_filters( "get_$taxonomy", $_term, $taxonomy ); $_term = sanitize_term($_term, $taxonomy, $filter); if ( $output == OBJECT ) { return $_term; } elseif ( $output == ARRAY_A ) { $__term = get_object_vars($_term); return $__term; } elseif ( $output == ARRAY_N ) { $__term = array_values(get_object_vars($_term)); return $__term; } else { return $_term; } } /** * Get all Term data from database by Term field and data. * * Warning: $value is not escaped for 'name' $field. You must do it yourself, if * required. * * The default $field is 'id', therefore it is possible to also use null for * field, but not recommended that you do so. * * If $value does not exist, the return value will be false. If $taxonomy exists * and $field and $value combinations exist, the Term will be returned. * * @since 2.3.0 * * @uses $wpdb * @uses sanitize_term() Cleanses the term based on $filter context before returning. * @see sanitize_term_field() The $context param lists the available values for get_term_by() $filter param. * * @param string $field Either 'slug', 'name', 'id' (term_id), or 'term_taxonomy_id' * @param string|int $value Search for this term value * @param string $taxonomy Taxonomy Name * @param string $output Constant OBJECT, ARRAY_A, or ARRAY_N * @param string $filter Optional, default is raw or no WordPress defined filter will applied. * @return mixed Term Row from database. Will return false if $taxonomy does not exist or $term was not found. */ function get_term_by($field, $value, $taxonomy, $output = OBJECT, $filter = 'raw') { global $wpdb; if ( ! taxonomy_exists($taxonomy) ) return false; if ( 'slug' == $field ) { $field = 't.slug'; $value = sanitize_title($value); if ( empty($value) ) return false; } else if ( 'name' == $field ) { // Assume already escaped $value = wp_unslash($value); $field = 't.name'; } else if ( 'term_taxonomy_id' == $field ) { $value = (int) $value; $field = 'tt.term_taxonomy_id'; } else { $term = get_term( (int) $value, $taxonomy, $output, $filter); if ( is_wp_error( $term ) ) $term = false; return $term; } $term = $wpdb->get_row( $wpdb->prepare( "SELECT t.*, tt.* FROM $wpdb->terms AS t INNER JOIN $wpdb->term_taxonomy AS tt ON t.term_id = tt.term_id WHERE tt.taxonomy = %s AND $field = %s LIMIT 1", $taxonomy, $value) ); if ( !$term ) return false; wp_cache_add($term->term_id, $term, $taxonomy); /** This filter is documented in wp-includes/taxonomy.php */ $term = apply_filters( 'get_term', $term, $taxonomy ); /** This filter is documented in wp-includes/taxonomy.php */ $term = apply_filters( "get_$taxonomy", $term, $taxonomy ); $term = sanitize_term($term, $taxonomy, $filter); if ( $output == OBJECT ) { return $term; } elseif ( $output == ARRAY_A ) { return get_object_vars($term); } elseif ( $output == ARRAY_N ) { return array_values(get_object_vars($term)); } else { return $term; } } /** * Merge all term children into a single array of their IDs. * * This recursive function will merge all of the children of $term into the same * array of term IDs. Only useful for taxonomies which are hierarchical. * * Will return an empty array if $term does not exist in $taxonomy. * * @since 2.3.0 * * @uses $wpdb * @uses _get_term_hierarchy() * @uses get_term_children() Used to get the children of both $taxonomy and the parent $term * * @param string $term_id ID of Term to get children * @param string $taxonomy Taxonomy Name * @return array|WP_Error List of Term IDs. WP_Error returned if $taxonomy does not exist */ function get_term_children( $term_id, $taxonomy ) { if ( ! taxonomy_exists($taxonomy) ) return new WP_Error('invalid_taxonomy', __('Invalid taxonomy')); $term_id = intval( $term_id ); $terms = _get_term_hierarchy($taxonomy); if ( ! isset($terms[$term_id]) ) return array(); $children = $terms[$term_id]; foreach ( (array) $terms[$term_id] as $child ) { if ( $term_id == $child ) { continue; } if ( isset($terms[$child]) ) $children = array_merge($children, get_term_children($child, $taxonomy)); } return $children; } /** * Get sanitized Term field. * * Does checks for $term, based on the $taxonomy. The function is for contextual * reasons and for simplicity of usage. See sanitize_term_field() for more * information. * * @since 2.3.0 * * @uses sanitize_term_field() Passes the return value in sanitize_term_field on success. * * @param string $field Term field to fetch * @param int $term Term ID * @param string $taxonomy Taxonomy Name * @param string $context Optional, default is display. Look at sanitize_term_field() for available options. * @return mixed Will return an empty string if $term is not an object or if $field is not set in $term. */ function get_term_field( $field, $term, $taxonomy, $context = 'display' ) { $term = (int) $term; $term = get_term( $term, $taxonomy ); if ( is_wp_error($term) ) return $term; if ( !is_object($term) ) return ''; if ( !isset($term->$field) ) return ''; return sanitize_term_field($field, $term->$field, $term->term_id, $taxonomy, $context); } /** * Sanitizes Term for editing. * * Return value is sanitize_term() and usage is for sanitizing the term for * editing. Function is for contextual and simplicity. * * @since 2.3.0 * * @uses sanitize_term() Passes the return value on success * * @param int|object $id Term ID or Object * @param string $taxonomy Taxonomy Name * @return mixed|null|WP_Error Will return empty string if $term is not an object. */ function get_term_to_edit( $id, $taxonomy ) { $term = get_term( $id, $taxonomy ); if ( is_wp_error($term) ) return $term; if ( !is_object($term) ) return ''; return sanitize_term($term, $taxonomy, 'edit'); } /** * Retrieve the terms in a given taxonomy or list of taxonomies. * * You can fully inject any customizations to the query before it is sent, as * well as control the output with a filter. * * The 'get_terms' filter will be called when the cache has the term and will * pass the found term along with the array of $taxonomies and array of $args. * This filter is also called before the array of terms is passed and will pass * the array of terms, along with the $taxonomies and $args. * * The 'list_terms_exclusions' filter passes the compiled exclusions along with * the $args. * * The 'get_terms_orderby' filter passes the ORDER BY clause for the query * along with the $args array. * * The 'get_terms_fields' filter passes the fields for the SELECT query * along with the $args array. * * The list of arguments that $args can contain, which will overwrite the defaults: * * orderby - Default is 'name'. Can be name, count, term_group, slug or nothing * (will use term_id), Passing a custom value other than these will cause it to * order based on the custom value. * * order - Default is ASC. Can use DESC. * * hide_empty - Default is true. Will not return empty terms, which means * terms whose count is 0 according to the given taxonomy. * * exclude - Default is an empty array. An array, comma- or space-delimited string * of term ids to exclude from the return array. If 'include' is non-empty, * 'exclude' is ignored. * * exclude_tree - Default is an empty array. An array, comma- or space-delimited * string of term ids to exclude from the return array, along with all of their * descendant terms according to the primary taxonomy. If 'include' is non-empty, * 'exclude_tree' is ignored. * * include - Default is an empty array. An array, comma- or space-delimited string * of term ids to include in the return array. * * number - The maximum number of terms to return. Default is to return them all. * * offset - The number by which to offset the terms query. * * fields - Default is 'all', which returns an array of term objects. * If 'fields' is 'ids' or 'names', returns an array of * integers or strings, respectively. * * slug - Returns terms whose "slug" matches this value. Default is empty string. * * hierarchical - Whether to include terms that have non-empty descendants * (even if 'hide_empty' is set to true). * * search - Returned terms' names will contain the value of 'search', * case-insensitive. Default is an empty string. * * name__like - Returned terms' names will contain the value of 'name__like', * case-insensitive. Default is empty string. * * description__like - Returned terms' descriptions will contain the value of * 'description__like', case-insensitive. Default is empty string. * * The argument 'pad_counts', if set to true will include the quantity of a term's * children in the quantity of each term's "count" object variable. * * The 'get' argument, if set to 'all' instead of its default empty string, * returns terms regardless of ancestry or whether the terms are empty. * * The 'child_of' argument, when used, should be set to the integer of a term ID. Its default * is 0. If set to a non-zero value, all returned terms will be descendants * of that term according to the given taxonomy. Hence 'child_of' is set to 0 * if more than one taxonomy is passed in $taxonomies, because multiple taxonomies * make term ancestry ambiguous. * * The 'parent' argument, when used, should be set to the integer of a term ID. Its default is * the empty string '', which has a different meaning from the integer 0. * If set to an integer value, all returned terms will have as an immediate * ancestor the term whose ID is specified by that integer according to the given taxonomy. * The 'parent' argument is different from 'child_of' in that a term X is considered a 'parent' * of term Y only if term X is the father of term Y, not its grandfather or great-grandfather, etc. * * The 'cache_domain' argument enables a unique cache key to be produced when this query is stored * in object cache. For instance, if you are using one of this function's filters to modify the * query (such as 'terms_clauses'), setting 'cache_domain' to a unique value will not overwrite * the cache for similar queries. Default value is 'core'. * * @since 2.3.0 * * @uses $wpdb * @uses wp_parse_args() Merges the defaults with those defined by $args and allows for strings. * * @param string|array $taxonomies Taxonomy name or list of Taxonomy names * @param string|array $args The values of what to search for when returning terms * @return array|WP_Error List of Term Objects and their children. Will return WP_Error, if any of $taxonomies do not exist. */ function get_terms($taxonomies, $args = '') { global $wpdb; $empty_array = array(); $single_taxonomy = ! is_array( $taxonomies ) || 1 === count( $taxonomies ); if ( ! is_array( $taxonomies ) ) $taxonomies = array( $taxonomies ); foreach ( $taxonomies as $taxonomy ) { if ( ! taxonomy_exists($taxonomy) ) { $error = new WP_Error('invalid_taxonomy', __('Invalid taxonomy')); return $error; } } $defaults = array('orderby' => 'name', 'order' => 'ASC', 'hide_empty' => true, 'exclude' => array(), 'exclude_tree' => array(), 'include' => array(), 'number' => '', 'fields' => 'all', 'slug' => '', 'parent' => '', 'hierarchical' => true, 'child_of' => 0, 'get' => '', 'name__like' => '', 'description__like' => '', 'pad_counts' => false, 'offset' => '', 'search' => '', 'cache_domain' => 'core' ); $args = wp_parse_args( $args, $defaults ); $args['number'] = absint( $args['number'] ); $args['offset'] = absint( $args['offset'] ); if ( !$single_taxonomy || ! is_taxonomy_hierarchical( reset( $taxonomies ) ) || ( '' !== $args['parent'] && 0 !== $args['parent'] ) ) { $args['child_of'] = 0; $args['hierarchical'] = false; $args['pad_counts'] = false; } if ( 'all' == $args['get'] ) { $args['child_of'] = 0; $args['hide_empty'] = 0; $args['hierarchical'] = false; $args['pad_counts'] = false; } /** * Filter the terms query arguments. * * @since 3.1.0 * * @param array $args An array of arguments. * @param string|array $taxonomies A taxonomy or array of taxonomies. */ $args = apply_filters( 'get_terms_args', $args, $taxonomies ); extract($args, EXTR_SKIP); if ( $child_of ) { $hierarchy = _get_term_hierarchy( reset( $taxonomies ) ); if ( ! isset( $hierarchy[ $child_of ] ) ) return $empty_array; } if ( $parent ) { $hierarchy = _get_term_hierarchy( reset( $taxonomies ) ); if ( ! isset( $hierarchy[ $parent ] ) ) return $empty_array; } // $args can be whatever, only use the args defined in defaults to compute the key $filter_key = ( has_filter('list_terms_exclusions') ) ? serialize($GLOBALS['wp_filter']['list_terms_exclusions']) : ''; $key = md5( serialize( compact(array_keys($defaults)) ) . serialize( $taxonomies ) . $filter_key ); $last_changed = wp_cache_get( 'last_changed', 'terms' ); if ( ! $last_changed ) { $last_changed = microtime(); wp_cache_set( 'last_changed', $last_changed, 'terms' ); } $cache_key = "get_terms:$key:$last_changed"; $cache = wp_cache_get( $cache_key, 'terms' ); if ( false !== $cache ) { /** * Filter the given taxonomy's terms cache. * * @since 2.3.0 * * @param array $cache Cached array of terms for the given taxonomy. * @param string|array $taxonomies A taxonomy or array of taxonomies. * @param array $args An array of arguments to get terms. */ $cache = apply_filters( 'get_terms', $cache, $taxonomies, $args ); return $cache; } $_orderby = strtolower($orderby); if ( 'count' == $_orderby ) $orderby = 'tt.count'; else if ( 'name' == $_orderby ) $orderby = 't.name'; else if ( 'slug' == $_orderby ) $orderby = 't.slug'; else if ( 'term_group' == $_orderby ) $orderby = 't.term_group'; else if ( 'none' == $_orderby ) $orderby = ''; elseif ( empty($_orderby) || 'id' == $_orderby ) $orderby = 't.term_id'; else $orderby = 't.name'; /** * Filter the ORDERBY clause of the terms query. * * @since 2.8.0 * * @param string $orderby ORDERBY clause of the terms query. * @param array $args An array of terms query arguments. * @param string|array $taxonomies A taxonomy or array of taxonomies. */ $orderby = apply_filters( 'get_terms_orderby', $orderby, $args, $taxonomies ); if ( !empty($orderby) ) $orderby = "ORDER BY $orderby"; else $order = ''; $order = strtoupper( $order ); if ( '' !== $order && !in_array( $order, array( 'ASC', 'DESC' ) ) ) $order = 'ASC'; $where = "tt.taxonomy IN ('" . implode("', '", $taxonomies) . "')"; $inclusions = ''; if ( ! empty( $include ) ) { $exclude = ''; $exclude_tree = ''; $inclusions = implode( ',', wp_parse_id_list( $include ) ); } if ( ! empty( $inclusions ) ) { $inclusions = ' AND t.term_id IN ( ' . $inclusions . ' )'; $where .= $inclusions; } $exclusions = ''; if ( ! empty( $exclude_tree ) ) { $exclude_tree = wp_parse_id_list( $exclude_tree ); $excluded_children = $exclude_tree; foreach ( $exclude_tree as $extrunk ) { $excluded_children = array_merge( $excluded_children, (array) get_terms( $taxonomies[0], array( 'child_of' => intval( $extrunk ), 'fields' => 'ids', 'hide_empty' => 0 ) ) ); } $exclusions = implode( ',', array_map( 'intval', $excluded_children ) ); } if ( ! empty( $exclude ) ) { $exterms = wp_parse_id_list( $exclude ); if ( empty( $exclusions ) ) $exclusions = implode( ',', $exterms ); else $exclusions .= ', ' . implode( ',', $exterms ); } if ( ! empty( $exclusions ) ) $exclusions = ' AND t.term_id NOT IN (' . $exclusions . ')'; /** * Filter the terms to exclude from the terms query. * * @since 2.3.0 * * @param string $exclusions NOT IN clause of the terms query. * @param array $args An array of terms query arguments. * @param string|array $taxonomies A taxonomy or array of taxonomies. */ $exclusions = apply_filters( 'list_terms_exclusions', $exclusions, $args, $taxonomies ); if ( ! empty( $exclusions ) ) $where .= $exclusions; if ( !empty($slug) ) { $slug = sanitize_title($slug); $where .= " AND t.slug = '$slug'"; } if ( !empty($name__like) ) { $name__like = like_escape( $name__like ); $where .= $wpdb->prepare( " AND t.name LIKE %s", '%' . $name__like . '%' ); } if ( ! empty( $description__like ) ) { $description__like = like_escape( $description__like ); $where .= $wpdb->prepare( " AND tt.description LIKE %s", '%' . $description__like . '%' ); } if ( '' !== $parent ) { $parent = (int) $parent; $where .= " AND tt.parent = '$parent'"; } if ( 'count' == $fields ) $hierarchical = false; if ( $hide_empty && !$hierarchical ) $where .= ' AND tt.count > 0'; // don't limit the query results when we have to descend the family tree if ( $number && ! $hierarchical && ! $child_of && '' === $parent ) { if ( $offset ) $limits = 'LIMIT ' . $offset . ',' . $number; else $limits = 'LIMIT ' . $number; } else { $limits = ''; } if ( ! empty( $search ) ) { $search = like_escape( $search ); $where .= $wpdb->prepare( ' AND ((t.name LIKE %s) OR (t.slug LIKE %s))', '%' . $search . '%', '%' . $search . '%' ); } $selects = array(); switch ( $fields ) { case 'all': $selects = array( 't.*', 'tt.*' ); break; case 'ids': case 'id=>parent': $selects = array( 't.term_id', 'tt.parent', 'tt.count' ); break; case 'names': $selects = array( 't.term_id', 'tt.parent', 'tt.count', 't.name' ); break; case 'count': $orderby = ''; $order = ''; $selects = array( 'COUNT(*)' ); break; case 'id=>name': $selects = array( 't.term_id', 't.name' ); break; case 'id=>slug': $selects = array( 't.term_id', 't.slug' ); break; } $_fields = $fields; /** * Filter the fields to select in the terms query. * * @since 2.8.0 * * @param array $selects An array of fields to select for the terms query. * @param array $args An array of term query arguments. * @param string|array $taxonomies A taxonomy or array of taxonomies. */ $fields = implode( ', ', apply_filters( 'get_terms_fields', $selects, $args, $taxonomies ) ); $join = "INNER JOIN $wpdb->term_taxonomy AS tt ON t.term_id = tt.term_id"; $pieces = array( 'fields', 'join', 'where', 'orderby', 'order', 'limits' ); /** * Filter the terms query SQL clauses. * * @since 3.1.0 * * @param array $pieces Terms query SQL clauses. * @param string|array $taxonomies A taxonomy or array of taxonomies. * @param array $args An array of terms query arguments. */ $clauses = apply_filters( 'terms_clauses', compact( $pieces ), $taxonomies, $args ); foreach ( $pieces as $piece ) $$piece = isset( $clauses[ $piece ] ) ? $clauses[ $piece ] : ''; $query = "SELECT $fields FROM $wpdb->terms AS t $join WHERE $where $orderby $order $limits"; $fields = $_fields; if ( 'count' == $fields ) { $term_count = $wpdb->get_var($query); return $term_count; } $terms = $wpdb->get_results($query); if ( 'all' == $fields ) { update_term_cache($terms); } if ( empty($terms) ) { wp_cache_add( $cache_key, array(), 'terms', DAY_IN_SECONDS ); /** This filter is documented in wp-includes/taxonomy.php */ $terms = apply_filters( 'get_terms', array(), $taxonomies, $args ); return $terms; } if ( $child_of ) { $children = _get_term_hierarchy( reset( $taxonomies ) ); if ( ! empty( $children ) ) $terms = _get_term_children( $child_of, $terms, reset( $taxonomies ) ); } // Update term counts to include children. if ( $pad_counts && 'all' == $fields ) _pad_term_counts( $terms, reset( $taxonomies ) ); // Make sure we show empty categories that have children. if ( $hierarchical && $hide_empty && is_array( $terms ) ) { foreach ( $terms as $k => $term ) { if ( ! $term->count ) { $children = get_term_children( $term->term_id, reset( $taxonomies ) ); if ( is_array( $children ) ) { foreach ( $children as $child_id ) { $child = get_term( $child_id, reset( $taxonomies ) ); if ( $child->count ) { continue 2; } } } // It really is empty unset($terms[$k]); } } } reset( $terms ); $_terms = array(); if ( 'id=>parent' == $fields ) { while ( $term = array_shift( $terms ) ) $_terms[$term->term_id] = $term->parent; } elseif ( 'ids' == $fields ) { while ( $term = array_shift( $terms ) ) $_terms[] = $term->term_id; } elseif ( 'names' == $fields ) { while ( $term = array_shift( $terms ) ) $_terms[] = $term->name; } elseif ( 'id=>name' == $fields ) { while ( $term = array_shift( $terms ) ) $_terms[$term->term_id] = $term->name; } elseif ( 'id=>slug' == $fields ) { while ( $term = array_shift( $terms ) ) $_terms[$term->term_id] = $term->slug; } if ( ! empty( $_terms ) ) $terms = $_terms; if ( $number && is_array( $terms ) && count( $terms ) > $number ) $terms = array_slice( $terms, $offset, $number ); wp_cache_add( $cache_key, $terms, 'terms', DAY_IN_SECONDS ); /** This filter is documented in wp-includes/taxonomy */ $terms = apply_filters( 'get_terms', $terms, $taxonomies, $args ); return $terms; } /** * Check if Term exists. * * Formerly is_term(), introduced in 2.3.0. * * @since 3.0.0 * * @uses $wpdb * * @param int|string $term The term to check * @param string $taxonomy The taxonomy name to use * @param int $parent ID of parent term under which to confine the exists search. * @return mixed Returns 0 if the term does not exist. Returns the term ID if no taxonomy is specified * and the term ID exists. Returns an array of the term ID and the taxonomy if the pairing exists. */ function term_exists($term, $taxonomy = '', $parent = 0) { global $wpdb; $select = "SELECT term_id FROM $wpdb->terms as t WHERE "; $tax_select = "SELECT tt.term_id, tt.term_taxonomy_id FROM $wpdb->terms AS t INNER JOIN $wpdb->term_taxonomy as tt ON tt.term_id = t.term_id WHERE "; if ( is_int($term) ) { if ( 0 == $term ) return 0; $where = 't.term_id = %d'; if ( !empty($taxonomy) ) return $wpdb->get_row( $wpdb->prepare( $tax_select . $where . " AND tt.taxonomy = %s", $term, $taxonomy ), ARRAY_A ); else return $wpdb->get_var( $wpdb->prepare( $select . $where, $term ) ); } $term = trim( wp_unslash( $term ) ); if ( '' === $slug = sanitize_title($term) ) return 0; $where = 't.slug = %s'; $else_where = 't.name = %s'; $where_fields = array($slug); $else_where_fields = array($term); if ( !empty($taxonomy) ) { $parent = (int) $parent; if ( $parent > 0 ) { $where_fields[] = $parent; $else_where_fields[] = $parent; $where .= ' AND tt.parent = %d'; $else_where .= ' AND tt.parent = %d'; } $where_fields[] = $taxonomy; $else_where_fields[] = $taxonomy; if ( $result = $wpdb->get_row( $wpdb->prepare("SELECT tt.term_id, tt.term_taxonomy_id FROM $wpdb->terms AS t INNER JOIN $wpdb->term_taxonomy as tt ON tt.term_id = t.term_id WHERE $where AND tt.taxonomy = %s", $where_fields), ARRAY_A) ) return $result; return $wpdb->get_row( $wpdb->prepare("SELECT tt.term_id, tt.term_taxonomy_id FROM $wpdb->terms AS t INNER JOIN $wpdb->term_taxonomy as tt ON tt.term_id = t.term_id WHERE $else_where AND tt.taxonomy = %s", $else_where_fields), ARRAY_A); } if ( $result = $wpdb->get_var( $wpdb->prepare("SELECT term_id FROM $wpdb->terms as t WHERE $where", $where_fields) ) ) return $result; return $wpdb->get_var( $wpdb->prepare("SELECT term_id FROM $wpdb->terms as t WHERE $else_where", $else_where_fields) ); } /** * Check if a term is an ancestor of another term. * * You can use either an id or the term object for both parameters. * * @since 3.4.0 * * @param int|object $term1 ID or object to check if this is the parent term. * @param int|object $term2 The child term. * @param string $taxonomy Taxonomy name that $term1 and $term2 belong to. * @return bool Whether $term2 is child of $term1 */ function term_is_ancestor_of( $term1, $term2, $taxonomy ) { if ( ! isset( $term1->term_id ) ) $term1 = get_term( $term1, $taxonomy ); if ( ! isset( $term2->parent ) ) $term2 = get_term( $term2, $taxonomy ); if ( empty( $term1->term_id ) || empty( $term2->parent ) ) return false; if ( $term2->parent == $term1->term_id ) return true; return term_is_ancestor_of( $term1, get_term( $term2->parent, $taxonomy ), $taxonomy ); } /** * Sanitize Term all fields. * * Relies on sanitize_term_field() to sanitize the term. The difference is that * this function will sanitize all fields. The context is based * on sanitize_term_field(). * * The $term is expected to be either an array or an object. * * @since 2.3.0 * * @uses sanitize_term_field Used to sanitize all fields in a term * * @param array|object $term The term to check * @param string $taxonomy The taxonomy name to use * @param string $context Default is 'display'. * @return array|object Term with all fields sanitized */ function sanitize_term($term, $taxonomy, $context = 'display') { $fields = array( 'term_id', 'name', 'description', 'slug', 'count', 'parent', 'term_group', 'term_taxonomy_id', 'object_id' ); $do_object = is_object( $term ); $term_id = $do_object ? $term->term_id : (isset($term['term_id']) ? $term['term_id'] : 0); foreach ( (array) $fields as $field ) { if ( $do_object ) { if ( isset($term->$field) ) $term->$field = sanitize_term_field($field, $term->$field, $term_id, $taxonomy, $context); } else { if ( isset($term[$field]) ) $term[$field] = sanitize_term_field($field, $term[$field], $term_id, $taxonomy, $context); } } if ( $do_object ) $term->filter = $context; else $term['filter'] = $context; return $term; } /** * Cleanse the field value in the term based on the context. * * Passing a term field value through the function should be assumed to have * cleansed the value for whatever context the term field is going to be used. * * If no context or an unsupported context is given, then default filters will * be applied. * * There are enough filters for each context to support a custom filtering * without creating your own filter function. Simply create a function that * hooks into the filter you need. * * @since 2.3.0 * * @uses $wpdb * * @param string $field Term field to sanitize * @param string $value Search for this term value * @param int $term_id Term ID * @param string $taxonomy Taxonomy Name * @param string $context Either edit, db, display, attribute, or js. * @return mixed sanitized field */ function sanitize_term_field($field, $value, $term_id, $taxonomy, $context) { $int_fields = array( 'parent', 'term_id', 'count', 'term_group', 'term_taxonomy_id', 'object_id' ); if ( in_array( $field, $int_fields ) ) { $value = (int) $value; if ( $value < 0 ) $value = 0; } if ( 'raw' == $context ) return $value; if ( 'edit' == $context ) { /** * Filter a term field to edit before it is sanitized. * * The dynamic portion of the filter name, $field, refers to the term field. * * @since 2.3.0 * * @param mixed $value Value of the term field. * @param int $term_id Term ID. * @param string $taxonomy Taxonomy slug. */ $value = apply_filters( "edit_term_{$field}", $value, $term_id, $taxonomy ); /** * Filter the taxonomy field to edit before it is sanitized. * * The dynamic portions of the filter name, $taxonomy, and $field, refer * to the taxonomy slug and taxonomy field, respectively. * * @since 2.3.0 * * @param mixed $value Value of the taxonomy field to edit. * @param int $term_id Term ID. */ $value = apply_filters( "edit_{$taxonomy}_{$field}", $value, $term_id ); if ( 'description' == $field ) $value = esc_html($value); // textarea_escaped else $value = esc_attr($value); } else if ( 'db' == $context ) { /** * Filter a term field value before it is sanitized. * * The dynamic portion of the filter name, $field, refers to the term field. * * @since 2.3.0 * * @param mixed $value Value of the term field. * @param string $taxonomy Taxonomy slug. */ $value = apply_filters( "pre_term_{$field}", $value, $taxonomy ); /** * Filter a taxonomy field before it is sanitized. * * The dynamic portions of the filter name, $taxonomy, and $field, refer * to the taxonomy slug and field name, respectively. * * @since 2.3.0 * * @param mixed $value Value of the taxonomy field. */ $value = apply_filters( "pre_{$taxonomy}_{$field}", $value ); // Back compat filters if ( 'slug' == $field ) { /** * Filter the category nicename before it is sanitized. * * Use the pre_{$taxonomy}_{$field} hook instead. * * @since 2.0.3 * * @param string $value The category nicename. */ $value = apply_filters( 'pre_category_nicename', $value ); } } else if ( 'rss' == $context ) { /** * Filter the term field for use in RSS. * * The dynamic portion of the filter name, $field, refers to the term field. * * @since 2.3.0 * * @param mixed $value Value of the term field. * @param string $taxonomy Taxonomy slug. */ $value = apply_filters( "term_{$field}_rss", $value, $taxonomy ); /** * Filter the taxonomy field for use in RSS. * * The dynamic portions of the hook name, $taxonomy, and $field, refer * to the taxonomy slug and field name, respectively. * * @since 2.3.0 * * @param mixed $value Value of the taxonomy field. */ $value = apply_filters( "{$taxonomy}_{$field}_rss", $value ); } else { // Use display filters by default. /** * Filter the term field sanitized for display. * * The dynamic portion of the filter name, $field, refers to the term field name. * * @since 2.3.0 * * @param mixed $value Value of the term field. * @param int $term_id Term ID. * @param string $taxonomy Taxonomy slug. * @param string $context Context to retrieve the term field value. */ $value = apply_filters( "term_{$field}", $value, $term_id, $taxonomy, $context ); /** * Filter the taxonomy field sanitized for display. * * The dynamic portions of the filter name, $taxonomy, and $field, refer * to the taxonomy slug and taxonomy field, respectively. * * @since 2.3.0 * * @param mixed $value Value of the taxonomy field. * @param int $term_id Term ID. * @param string $context Context to retrieve the taxonomy field value. */ $value = apply_filters( "{$taxonomy}_{$field}", $value, $term_id, $context ); } if ( 'attribute' == $context ) $value = esc_attr($value); else if ( 'js' == $context ) $value = esc_js($value); return $value; } /** * Count how many terms are in Taxonomy. * * Default $args is 'hide_empty' which can be 'hide_empty=true' or array('hide_empty' => true). * * @since 2.3.0 * * @uses get_terms() * @uses wp_parse_args() Turns strings into arrays and merges defaults into an array. * * @param string $taxonomy Taxonomy name * @param array|string $args Overwrite defaults. See get_terms() * @return int|WP_Error How many terms are in $taxonomy. WP_Error if $taxonomy does not exist. */ function wp_count_terms( $taxonomy, $args = array() ) { $defaults = array('hide_empty' => false); $args = wp_parse_args($args, $defaults); // backwards compatibility if ( isset($args['ignore_empty']) ) { $args['hide_empty'] = $args['ignore_empty']; unset($args['ignore_empty']); } $args['fields'] = 'count'; return get_terms($taxonomy, $args); } /** * Will unlink the object from the taxonomy or taxonomies. * * Will remove all relationships between the object and any terms in * a particular taxonomy or taxonomies. Does not remove the term or * taxonomy itself. * * @since 2.3.0 * @uses wp_remove_object_terms() * * @param int $object_id The term Object Id that refers to the term * @param string|array $taxonomies List of Taxonomy Names or single Taxonomy name. */ function wp_delete_object_term_relationships( $object_id, $taxonomies ) { $object_id = (int) $object_id; if ( !is_array($taxonomies) ) $taxonomies = array($taxonomies); foreach ( (array) $taxonomies as $taxonomy ) { $term_ids = wp_get_object_terms( $object_id, $taxonomy, array( 'fields' => 'ids' ) ); $term_ids = array_map( 'intval', $term_ids ); wp_remove_object_terms( $object_id, $term_ids, $taxonomy ); } } /** * Removes a term from the database. * * If the term is a parent of other terms, then the children will be updated to * that term's parent. * * The $args 'default' will only override the terms found, if there is only one * term found. Any other and the found terms are used. * * The $args 'force_default' will force the term supplied as default to be * assigned even if the object was not going to be termless * * @since 2.3.0 * * @uses $wpdb * * @param int $term Term ID * @param string $taxonomy Taxonomy Name * @param array|string $args Optional. Change 'default' term id and override found term ids. * @return bool|WP_Error Returns false if not term; true if completes delete action. */ function wp_delete_term( $term, $taxonomy, $args = array() ) { global $wpdb; $term = (int) $term; if ( ! $ids = term_exists($term, $taxonomy) ) return false; if ( is_wp_error( $ids ) ) return $ids; $tt_id = $ids['term_taxonomy_id']; $defaults = array(); if ( 'category' == $taxonomy ) { $defaults['default'] = get_option( 'default_category' ); if ( $defaults['default'] == $term ) return 0; // Don't delete the default category } $args = wp_parse_args($args, $defaults); extract($args, EXTR_SKIP); if ( isset( $default ) ) { $default = (int) $default; if ( ! term_exists($default, $taxonomy) ) unset($default); } // Update children to point to new parent if ( is_taxonomy_hierarchical($taxonomy) ) { $term_obj = get_term($term, $taxonomy); if ( is_wp_error( $term_obj ) ) return $term_obj; $parent = $term_obj->parent; $edit_tt_ids = $wpdb->get_col( "SELECT `term_taxonomy_id` FROM $wpdb->term_taxonomy WHERE `parent` = " . (int)$term_obj->term_id ); /** * Fires immediately before a term to delete's children are reassigned a parent. * * @since 2.9.0 * * @param array $edit_tt_ids An array of term taxonomy IDs for the given term. */ do_action( 'edit_term_taxonomies', $edit_tt_ids ); $wpdb->update( $wpdb->term_taxonomy, compact( 'parent' ), array( 'parent' => $term_obj->term_id) + compact( 'taxonomy' ) ); /** * Fires immediately after a term to delete's children are reassigned a parent. * * @since 2.9.0 * * @param array $edit_tt_ids An array of term taxonomy IDs for the given term. */ do_action( 'edited_term_taxonomies', $edit_tt_ids ); } $objects = $wpdb->get_col( $wpdb->prepare( "SELECT object_id FROM $wpdb->term_relationships WHERE term_taxonomy_id = %d", $tt_id ) ); foreach ( (array) $objects as $object ) { $terms = wp_get_object_terms($object, $taxonomy, array('fields' => 'ids', 'orderby' => 'none')); if ( 1 == count($terms) && isset($default) ) { $terms = array($default); } else { $terms = array_diff($terms, array($term)); if (isset($default) && isset($force_default) && $force_default) $terms = array_merge($terms, array($default)); } $terms = array_map('intval', $terms); wp_set_object_terms($object, $terms, $taxonomy); } // Clean the relationship caches for all object types using this term $tax_object = get_taxonomy( $taxonomy ); foreach ( $tax_object->object_type as $object_type ) clean_object_term_cache( $objects, $object_type ); // Get the object before deletion so we can pass to actions below $deleted_term = get_term( $term, $taxonomy ); /** * Fires immediately before a term taxonomy ID is deleted. * * @since 2.9.0 * * @param int $tt_id Term taxonomy ID. */ do_action( 'delete_term_taxonomy', $tt_id ); $wpdb->delete( $wpdb->term_taxonomy, array( 'term_taxonomy_id' => $tt_id ) ); /** * Fires immediately after a term taxonomy ID is deleted. * * @since 2.9.0 * * @param int $tt_id Term taxonomy ID. */ do_action( 'deleted_term_taxonomy', $tt_id ); // Delete the term if no taxonomies use it. if ( !$wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->term_taxonomy WHERE term_id = %d", $term) ) ) $wpdb->delete( $wpdb->terms, array( 'term_id' => $term ) ); clean_term_cache($term, $taxonomy); /** * Fires after a term is deleted from the database and the cache is cleaned. * * @since 2.5.0 * * @param int $term Term ID. * @param int $tt_id Term taxonomy ID. * @param string $taxonomy Taxonomy slug. * @param mixed $deleted_term Copy of the already-deleted term, in the form specified * by the parent function. WP_Error otherwise. */ do_action( 'delete_term', $term, $tt_id, $taxonomy, $deleted_term ); /** * Fires after a term in a specific taxonomy is deleted. * * The dynamic portion of the hook name, $taxonomy, refers to the specific * taxonomy the term belonged to. * * @since 2.3.0 * * @param int $term Term ID. * @param int $tt_id Term taxonomy ID. * @param mixed $deleted_term Copy of the already-deleted term, in the form specified * by the parent function. WP_Error otherwise. */ do_action( "delete_$taxonomy", $term, $tt_id, $deleted_term ); return true; } /** * Deletes one existing category. * * @since 2.0.0 * @uses wp_delete_term() * * @param int $cat_ID * @return mixed Returns true if completes delete action; false if term doesn't exist; * Zero on attempted deletion of default Category; WP_Error object is also a possibility. */ function wp_delete_category( $cat_ID ) { return wp_delete_term( $cat_ID, 'category' ); } /** * Retrieves the terms associated with the given object(s), in the supplied taxonomies. * * The following information has to do the $args parameter and for what can be * contained in the string or array of that parameter, if it exists. * * The first argument is called, 'orderby' and has the default value of 'name'. * The other value that is supported is 'count'. * * The second argument is called, 'order' and has the default value of 'ASC'. * The only other value that will be acceptable is 'DESC'. * * The final argument supported is called, 'fields' and has the default value of * 'all'. There are multiple other options that can be used instead. Supported * values are as follows: 'all', 'ids', 'names', and finally * 'all_with_object_id'. * * The fields argument also decides what will be returned. If 'all' or * 'all_with_object_id' is chosen or the default kept intact, then all matching * terms objects will be returned. If either 'ids' or 'names' is used, then an * array of all matching term ids or term names will be returned respectively. * * @since 2.3.0 * @uses $wpdb * * @param int|array $object_ids The ID(s) of the object(s) to retrieve. * @param string|array $taxonomies The taxonomies to retrieve terms from. * @param array|string $args Change what is returned * @return array|WP_Error The requested term data or empty array if no terms found. WP_Error if any of the $taxonomies don't exist. */ function wp_get_object_terms($object_ids, $taxonomies, $args = array()) { global $wpdb; if ( empty( $object_ids ) || empty( $taxonomies ) ) return array(); if ( !is_array($taxonomies) ) $taxonomies = array($taxonomies); foreach ( $taxonomies as $taxonomy ) { if ( ! taxonomy_exists($taxonomy) ) return new WP_Error('invalid_taxonomy', __('Invalid taxonomy')); } if ( !is_array($object_ids) ) $object_ids = array($object_ids); $object_ids = array_map('intval', $object_ids); $defaults = array('orderby' => 'name', 'order' => 'ASC', 'fields' => 'all'); $args = wp_parse_args( $args, $defaults ); $terms = array(); if ( count($taxonomies) > 1 ) { foreach ( $taxonomies as $index => $taxonomy ) { $t = get_taxonomy($taxonomy); if ( isset($t->args) && is_array($t->args) && $args != array_merge($args, $t->args) ) { unset($taxonomies[$index]); $terms = array_merge($terms, wp_get_object_terms($object_ids, $taxonomy, array_merge($args, $t->args))); } } } else { $t = get_taxonomy($taxonomies[0]); if ( isset($t->args) && is_array($t->args) ) $args = array_merge($args, $t->args); } extract($args, EXTR_SKIP); if ( 'count' == $orderby ) $orderby = 'tt.count'; else if ( 'name' == $orderby ) $orderby = 't.name'; else if ( 'slug' == $orderby ) $orderby = 't.slug'; else if ( 'term_group' == $orderby ) $orderby = 't.term_group'; else if ( 'term_order' == $orderby ) $orderby = 'tr.term_order'; else if ( 'none' == $orderby ) { $orderby = ''; $order = ''; } else { $orderby = 't.term_id'; } // tt_ids queries can only be none or tr.term_taxonomy_id if ( ('tt_ids' == $fields) && !empty($orderby) ) $orderby = 'tr.term_taxonomy_id'; if ( !empty($orderby) ) $orderby = "ORDER BY $orderby"; $order = strtoupper( $order ); if ( '' !== $order && ! in_array( $order, array( 'ASC', 'DESC' ) ) ) $order = 'ASC'; $taxonomies = "'" . implode("', '", $taxonomies) . "'"; $object_ids = implode(', ', $object_ids); $select_this = ''; if ( 'all' == $fields ) $select_this = 't.*, tt.*'; else if ( 'ids' == $fields ) $select_this = 't.term_id'; else if ( 'names' == $fields ) $select_this = 't.name'; else if ( 'slugs' == $fields ) $select_this = 't.slug'; else if ( 'all_with_object_id' == $fields ) $select_this = 't.*, tt.*, tr.object_id'; $query = "SELECT $select_this FROM $wpdb->terms AS t INNER JOIN $wpdb->term_taxonomy AS tt ON tt.term_id = t.term_id INNER JOIN $wpdb->term_relationships AS tr ON tr.term_taxonomy_id = tt.term_taxonomy_id WHERE tt.taxonomy IN ($taxonomies) AND tr.object_id IN ($object_ids) $orderby $order"; if ( 'all' == $fields || 'all_with_object_id' == $fields ) { $_terms = $wpdb->get_results( $query ); foreach ( $_terms as $key => $term ) { $_terms[$key] = sanitize_term( $term, $taxonomy, 'raw' ); } $terms = array_merge( $terms, $_terms ); update_term_cache( $terms ); } else if ( 'ids' == $fields || 'names' == $fields || 'slugs' == $fields ) { $_terms = $wpdb->get_col( $query ); $_field = ( 'ids' == $fields ) ? 'term_id' : 'name'; foreach ( $_terms as $key => $term ) { $_terms[$key] = sanitize_term_field( $_field, $term, $term, $taxonomy, 'raw' ); } $terms = array_merge( $terms, $_terms ); } else if ( 'tt_ids' == $fields ) { $terms = $wpdb->get_col("SELECT tr.term_taxonomy_id FROM $wpdb->term_relationships AS tr INNER JOIN $wpdb->term_taxonomy AS tt ON tr.term_taxonomy_id = tt.term_taxonomy_id WHERE tr.object_id IN ($object_ids) AND tt.taxonomy IN ($taxonomies) $orderby $order"); foreach ( $terms as $key => $tt_id ) { $terms[$key] = sanitize_term_field( 'term_taxonomy_id', $tt_id, 0, $taxonomy, 'raw' ); // 0 should be the term id, however is not needed when using raw context. } } if ( ! $terms ) $terms = array(); /** * Filter the terms for a given object or objects. * * @since 2.8.0 * * @param array $terms An array of terms for the given object or objects. * @param array|int $object_ids Object ID or array of IDs. * @param array|string $taxonomies A taxonomy or array of taxonomies. * @param array $args An array of arguments for retrieving terms for * the given object(s). */ return apply_filters( 'wp_get_object_terms', $terms, $object_ids, $taxonomies, $args ); } /** * Add a new term to the database. * * A non-existent term is inserted in the following sequence: * 1. The term is added to the term table, then related to the taxonomy. * 2. If everything is correct, several actions are fired. * 3. The 'term_id_filter' is evaluated. * 4. The term cache is cleaned. * 5. Several more actions are fired. * 6. An array is returned containing the term_id and term_taxonomy_id. * * If the 'slug' argument is not empty, then it is checked to see if the term * is invalid. If it is not a valid, existing term, it is added and the term_id * is given. * * If the taxonomy is hierarchical, and the 'parent' argument is not empty, * the term is inserted and the term_id will be given. * Error handling: * If $taxonomy does not exist or $term is empty, * a WP_Error object will be returned. * * If the term already exists on the same hierarchical level, * or the term slug and name are not unique, a WP_Error object will be returned. * * @global wpdb $wpdb The WordPress database object. * @since 2.3.0 * * @param string $term The term to add or update. * @param string $taxonomy The taxonomy to which to add the term * @param array|string $args { * Arguments to change values of the inserted term. * * @type string 'alias_of' Slug of the term to make this term an alias of. * Default empty string. Accepts a term slug. * @type string 'description' The term description. * Default empty string. * @type int 'parent' The id of the parent term. * Default 0. * @type string 'slug' The term slug to use. * Default empty string. * } * @return array|WP_Error An array containing the term_id and term_taxonomy_id, WP_Error otherwise. */ function wp_insert_term( $term, $taxonomy, $args = array() ) { global $wpdb; if ( ! taxonomy_exists($taxonomy) ) return new WP_Error('invalid_taxonomy', __('Invalid taxonomy')); /** * Filter a term before it is sanitized and inserted into the database. * * @since 3.0.0 * * @param string $term The term to add or update. * @param string $taxonomy Taxonomy slug. */ $term = apply_filters( 'pre_insert_term', $term, $taxonomy ); if ( is_wp_error( $term ) ) return $term; if ( is_int($term) && 0 == $term ) return new WP_Error('invalid_term_id', __('Invalid term ID')); if ( '' == trim($term) ) return new WP_Error('empty_term_name', __('A name is required for this term')); $defaults = array( 'alias_of' => '', 'description' => '', 'parent' => 0, 'slug' => ''); $args = wp_parse_args($args, $defaults); $args['name'] = $term; $args['taxonomy'] = $taxonomy; $args = sanitize_term($args, $taxonomy, 'db'); extract($args, EXTR_SKIP); // expected_slashed ($name) $name = wp_unslash($name); $description = wp_unslash($description); $slug_provided = ! empty( $slug ); if ( ! $slug_provided ) { $slug = sanitize_title($name); } $term_group = 0; if ( $alias_of ) { $alias = $wpdb->get_row( $wpdb->prepare( "SELECT term_id, term_group FROM $wpdb->terms WHERE slug = %s", $alias_of) ); if ( $alias->term_group ) { // The alias we want is already in a group, so let's use that one. $term_group = $alias->term_group; } else { // The alias isn't in a group, so let's create a new one and firstly add the alias term to it. $term_group = $wpdb->get_var("SELECT MAX(term_group) FROM $wpdb->terms") + 1; /** * Fires immediately before the given terms are edited. * * @since 2.9.0 * * @param int $term_id Term ID. * @param string $taxonomy Taxonomy slug. */ do_action( 'edit_terms', $alias->term_id, $taxonomy ); $wpdb->update($wpdb->terms, compact('term_group'), array('term_id' => $alias->term_id) ); /** * Fires immediately after the given terms are edited. * * @since 2.9.0 * * @param int $term_id Term ID * @param string $taxonomy Taxonomy slug. */ do_action( 'edited_terms', $alias->term_id, $taxonomy ); } } if ( $term_id = term_exists($slug) ) { $existing_term = $wpdb->get_row( $wpdb->prepare( "SELECT name FROM $wpdb->terms WHERE term_id = %d", $term_id), ARRAY_A ); // We've got an existing term in the same taxonomy, which matches the name of the new term: if ( is_taxonomy_hierarchical($taxonomy) && $existing_term['name'] == $name && $exists = term_exists( (int) $term_id, $taxonomy ) ) { // Hierarchical, and it matches an existing term, Do not allow same "name" in the same level. $siblings = get_terms($taxonomy, array('fields' => 'names', 'get' => 'all', 'parent' => (int)$parent) ); if ( in_array($name, $siblings) ) { if ( $slug_provided ) { return new WP_Error( 'term_exists', __( 'A term with the name and slug provided already exists with this parent.' ), $exists['term_id'] ); } else { return new WP_Error( 'term_exists', __( 'A term with the name provided already exists with this parent.' ), $exists['term_id'] ); } } else { $slug = wp_unique_term_slug($slug, (object) $args); if ( false === $wpdb->insert( $wpdb->terms, compact( 'name', 'slug', 'term_group' ) ) ) return new WP_Error('db_insert_error', __('Could not insert term into the database'), $wpdb->last_error); $term_id = (int) $wpdb->insert_id; } } elseif ( $existing_term['name'] != $name ) { // We've got an existing term, with a different name, Create the new term. $slug = wp_unique_term_slug($slug, (object) $args); if ( false === $wpdb->insert( $wpdb->terms, compact( 'name', 'slug', 'term_group' ) ) ) return new WP_Error('db_insert_error', __('Could not insert term into the database'), $wpdb->last_error); $term_id = (int) $wpdb->insert_id; } elseif ( $exists = term_exists( (int) $term_id, $taxonomy ) ) { // Same name, same slug. return new WP_Error( 'term_exists', __( 'A term with the name and slug provided already exists.' ), $exists['term_id'] ); } } else { // This term does not exist at all in the database, Create it. $slug = wp_unique_term_slug($slug, (object) $args); if ( false === $wpdb->insert( $wpdb->terms, compact( 'name', 'slug', 'term_group' ) ) ) return new WP_Error('db_insert_error', __('Could not insert term into the database'), $wpdb->last_error); $term_id = (int) $wpdb->insert_id; } // Seems unreachable, However, Is used in the case that a term name is provided, which sanitizes to an empty string. if ( empty($slug) ) { $slug = sanitize_title($slug, $term_id); /** This action is documented in wp-includes/taxonomy.php */ do_action( 'edit_terms', $term_id, $taxonomy ); $wpdb->update( $wpdb->terms, compact( 'slug' ), compact( 'term_id' ) ); /** This action is documented in wp-includes/taxonomy.php */ do_action( 'edited_terms', $term_id, $taxonomy ); } $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, $term_id ) ); if ( !empty($tt_id) ) return array('term_id' => $term_id, 'term_taxonomy_id' => $tt_id); $wpdb->insert( $wpdb->term_taxonomy, compact( 'term_id', 'taxonomy', 'description', 'parent') + array( 'count' => 0 ) ); $tt_id = (int) $wpdb->insert_id; /** * Fires immediately after a new term is created, before the term cache is cleaned. * * @since 2.3.0 * * @param int $term_id Term ID. * @param int $tt_id Term taxonomy ID. * @param string $taxonomy Taxonomy slug. */ do_action( "create_term", $term_id, $tt_id, $taxonomy ); /** * Fires after a new term is created for a specific taxonomy. * * The dynamic portion of the hook name, $taxonomy, refers * to the slug of the taxonomy the term was created for. * * @since 2.3.0 * * @param int $term_id Term ID. * @param int $tt_id Term taxonomy ID. */ do_action( "create_$taxonomy", $term_id, $tt_id ); /** * Filter the term ID after a new term is created. * * @since 2.3.0 * * @param int $term_id Term ID. * @param int $tt_id Taxonomy term ID. */ $term_id = apply_filters( 'term_id_filter', $term_id, $tt_id ); clean_term_cache($term_id, $taxonomy); /** * Fires after a new term is created, and after the term cache has been cleaned. * * @since 2.3.0 */ do_action( "created_term", $term_id, $tt_id, $taxonomy ); /** * Fires after a new term in a specific taxonomy is created, and after the term * cache has been cleaned. * * @since 2.3.0 * * @param int $term_id Term ID. * @param int $tt_id Term taxonomy ID. */ do_action( "created_$taxonomy", $term_id, $tt_id ); return array('term_id' => $term_id, 'term_taxonomy_id' => $tt_id); } /** * Create Term and Taxonomy Relationships. * * Relates an object (post, link etc) to a term and taxonomy type. Creates the * term and taxonomy relationship if it doesn't already exist. Creates a term if * it doesn't exist (using the slug). * * A relationship means that the term is grouped in or belongs to the taxonomy. * A term has no meaning until it is given context by defining which taxonomy it * exists under. * * @since 2.3.0 * @uses wp_remove_object_terms() * * @param int $object_id The object to relate to. * @param array|int|string $terms The slug or id of the term, will replace all existing * related terms in this taxonomy. * @param array|string $taxonomy The context in which to relate the term to the object. * @param bool $append If false will delete difference of terms. * @return array|WP_Error Affected Term IDs */ function wp_set_object_terms($object_id, $terms, $taxonomy, $append = false) { global $wpdb; $object_id = (int) $object_id; if ( ! taxonomy_exists($taxonomy) ) return new WP_Error('invalid_taxonomy', __('Invalid taxonomy')); if ( !is_array($terms) ) $terms = array($terms); if ( ! $append ) $old_tt_ids = wp_get_object_terms($object_id, $taxonomy, array('fields' => 'tt_ids', 'orderby' => 'none')); else $old_tt_ids = array(); $tt_ids = array(); $term_ids = array(); $new_tt_ids = array(); foreach ( (array) $terms as $term) { if ( !strlen(trim($term)) ) continue; if ( !$term_info = term_exists($term, $taxonomy) ) { // Skip if a non-existent term ID is passed. if ( is_int($term) ) continue; $term_info = wp_insert_term($term, $taxonomy); } if ( is_wp_error($term_info) ) return $term_info; $term_ids[] = $term_info['term_id']; $tt_id = $term_info['term_taxonomy_id']; $tt_ids[] = $tt_id; 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 ) ) ) continue; /** * Fires immediately before an object-term relationship is added. * * @since 2.9.0 * * @param int $object_id Object ID. * @param int $tt_id Term taxonomy ID. */ do_action( 'add_term_relationship', $object_id, $tt_id ); $wpdb->insert( $wpdb->term_relationships, array( 'object_id' => $object_id, 'term_taxonomy_id' => $tt_id ) ); /** * Fires immediately after an object-term relationship is added. * * @since 2.9.0 * * @param int $object_id Object ID. * @param int $tt_id Term taxonomy ID. */ do_action( 'added_term_relationship', $object_id, $tt_id ); $new_tt_ids[] = $tt_id; } if ( $new_tt_ids ) wp_update_term_count( $new_tt_ids, $taxonomy ); if ( ! $append ) { $delete_tt_ids = array_diff( $old_tt_ids, $tt_ids ); if ( $delete_tt_ids ) { $in_delete_tt_ids = "'" . implode( "', '", $delete_tt_ids ) . "'"; $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 ) ); $delete_term_ids = array_map( 'intval', $delete_term_ids ); $remove = wp_remove_object_terms( $object_id, $delete_term_ids, $taxonomy ); if ( is_wp_error( $remove ) ) { return $remove; } } } $t = get_taxonomy($taxonomy); if ( ! $append && isset($t->sort) && $t->sort ) { $values = array(); $term_order = 0; $final_tt_ids = wp_get_object_terms($object_id, $taxonomy, array('fields' => 'tt_ids')); foreach ( $tt_ids as $tt_id ) if ( in_array($tt_id, $final_tt_ids) ) $values[] = $wpdb->prepare( "(%d, %d, %d)", $object_id, $tt_id, ++$term_order); if ( $values ) if ( false === $wpdb->query( "INSERT INTO $wpdb->term_relationships (object_id, term_taxonomy_id, term_order) VALUES " . join( ',', $values ) . " ON DUPLICATE KEY UPDATE term_order = VALUES(term_order)" ) ) return new WP_Error( 'db_insert_error', __( 'Could not insert term relationship into the database' ), $wpdb->last_error ); } wp_cache_delete( $object_id, $taxonomy . '_relationships' ); /** * Fires after an object's terms have been set. * * @since 2.8.0 * * @param int $object_id Object ID. * @param array $terms An array of object terms. * @param array $tt_ids An array of term taxonomy IDs. * @param string $taxonomy Taxonomy slug. * @param bool $append Whether to append new terms to the old terms. * @param array $old_tt_ids Old array of term taxonomy IDs. */ do_action( 'set_object_terms', $object_id, $terms, $tt_ids, $taxonomy, $append, $old_tt_ids ); return $tt_ids; } /** * Add term(s) associated with a given object. * * @since 3.6.0 * @uses wp_set_object_terms() * * @param int $object_id The ID of the object to which the terms will be added. * @param array|int|string $terms The slug(s) or ID(s) of the term(s) to add. * @param array|string $taxonomy Taxonomy name. * @return array|WP_Error Affected Term IDs */ function wp_add_object_terms( $object_id, $terms, $taxonomy ) { return wp_set_object_terms( $object_id, $terms, $taxonomy, true ); } /** * Remove term(s) associated with a given object. * * @since 3.6.0 * @uses $wpdb * * @param int $object_id The ID of the object from which the terms will be removed. * @param array|int|string $terms The slug(s) or ID(s) of the term(s) to remove. * @param array|string $taxonomy Taxonomy name. * @return bool|WP_Error True on success, false or WP_Error on failure. */ function wp_remove_object_terms( $object_id, $terms, $taxonomy ) { global $wpdb; $object_id = (int) $object_id; if ( ! taxonomy_exists( $taxonomy ) ) { return new WP_Error( 'invalid_taxonomy', __( 'Invalid Taxonomy' ) ); } if ( ! is_array( $terms ) ) { $terms = array( $terms ); } $tt_ids = array(); foreach ( (array) $terms as $term ) { if ( ! strlen( trim( $term ) ) ) { continue; } if ( ! $term_info = term_exists( $term, $taxonomy ) ) { // Skip if a non-existent term ID is passed. if ( is_int( $term ) ) { continue; } } if ( is_wp_error( $term_info ) ) { return $term_info; } $tt_ids[] = $term_info['term_taxonomy_id']; } if ( $tt_ids ) { $in_tt_ids = "'" . implode( "', '", $tt_ids ) . "'"; /** * Fires immediately before an object-term relationship is deleted. * * @since 2.9.0 * * @param int $object_id Object ID. * @param array $tt_ids An array of term taxonomy IDs. */ do_action( 'delete_term_relationships', $object_id, $tt_ids ); $deleted = $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->term_relationships WHERE object_id = %d AND term_taxonomy_id IN ($in_tt_ids)", $object_id ) ); /** * Fires immediately after an object-term relationship is deleted. * * @since 2.9.0 * * @param int $object_id Object ID. * @param array $tt_ids An array of term taxonomy IDs. */ do_action( 'deleted_term_relationships', $object_id, $tt_ids ); wp_update_term_count( $tt_ids, $taxonomy ); return (bool) $deleted; } return false; } /** * Will make slug unique, if it isn't already. * * The $slug has to be unique global to every taxonomy, meaning that one * taxonomy term can't have a matching slug with another taxonomy term. Each * slug has to be globally unique for every taxonomy. * * The way this works is that if the taxonomy that the term belongs to is * hierarchical and has a parent, it will append that parent to the $slug. * * If that still doesn't return an unique slug, then it try to append a number * until it finds a number that is truly unique. * * The only purpose for $term is for appending a parent, if one exists. * * @since 2.3.0 * @uses $wpdb * * @param string $slug The string that will be tried for a unique slug * @param object $term The term object that the $slug will belong too * @return string Will return a true unique slug. */ function wp_unique_term_slug($slug, $term) { global $wpdb; if ( ! term_exists( $slug ) ) return $slug; // If the taxonomy supports hierarchy and the term has a parent, make the slug unique // by incorporating parent slugs. if ( is_taxonomy_hierarchical($term->taxonomy) && !empty($term->parent) ) { $the_parent = $term->parent; while ( ! empty($the_parent) ) { $parent_term = get_term($the_parent, $term->taxonomy); if ( is_wp_error($parent_term) || empty($parent_term) ) break; $slug .= '-' . $parent_term->slug; if ( ! term_exists( $slug ) ) return $slug; if ( empty($parent_term->parent) ) break; $the_parent = $parent_term->parent; } } // If we didn't get a unique slug, try appending a number to make it unique. if ( ! empty( $term->term_id ) ) $query = $wpdb->prepare( "SELECT slug FROM $wpdb->terms WHERE slug = %s AND term_id != %d", $slug, $term->term_id ); else $query = $wpdb->prepare( "SELECT slug FROM $wpdb->terms WHERE slug = %s", $slug ); if ( $wpdb->get_var( $query ) ) { $num = 2; do { $alt_slug = $slug . "-$num"; $num++; $slug_check = $wpdb->get_var( $wpdb->prepare( "SELECT slug FROM $wpdb->terms WHERE slug = %s", $alt_slug ) ); } while ( $slug_check ); $slug = $alt_slug; } return $slug; } /** * Update term based on arguments provided. * * The $args will indiscriminately override all values with the same field name. * Care must be taken to not override important information need to update or * update will fail (or perhaps create a new term, neither would be acceptable). * * Defaults will set 'alias_of', 'description', 'parent', and 'slug' if not * defined in $args already. * * 'alias_of' will create a term group, if it doesn't already exist, and update * it for the $term. * * If the 'slug' argument in $args is missing, then the 'name' in $args will be * used. It should also be noted that if you set 'slug' and it isn't unique then * a WP_Error will be passed back. If you don't pass any slug, then a unique one * will be created for you. * * For what can be overrode in $args, check the term scheme can contain and stay * away from the term keys. * * @since 2.3.0 * * @uses $wpdb * * @param int $term_id The ID of the term * @param string $taxonomy The context in which to relate the term to the object. * @param array|string $args Overwrite term field values * @return array|WP_Error Returns Term ID and Taxonomy Term ID */ function wp_update_term( $term_id, $taxonomy, $args = array() ) { global $wpdb; if ( ! taxonomy_exists($taxonomy) ) return new WP_Error('invalid_taxonomy', __('Invalid taxonomy')); $term_id = (int) $term_id; // First, get all of the original args $term = get_term ($term_id, $taxonomy, ARRAY_A); if ( is_wp_error( $term ) ) return $term; // Escape data pulled from DB. $term = wp_slash($term); // Merge old and new args with new args overwriting old ones. $args = array_merge($term, $args); $defaults = array( 'alias_of' => '', 'description' => '', 'parent' => 0, 'slug' => ''); $args = wp_parse_args($args, $defaults); $args = sanitize_term($args, $taxonomy, 'db'); extract($args, EXTR_SKIP); // expected_slashed ($name) $name = wp_unslash($name); $description = wp_unslash($description); if ( '' == trim($name) ) return new WP_Error('empty_term_name', __('A name is required for this term')); $empty_slug = false; if ( empty($slug) ) { $empty_slug = true; $slug = sanitize_title($name); } if ( $alias_of ) { $alias = $wpdb->get_row( $wpdb->prepare( "SELECT term_id, term_group FROM $wpdb->terms WHERE slug = %s", $alias_of) ); if ( $alias->term_group ) { // The alias we want is already in a group, so let's use that one. $term_group = $alias->term_group; } else { // The alias isn't in a group, so let's create a new one and firstly add the alias term to it. $term_group = $wpdb->get_var("SELECT MAX(term_group) FROM $wpdb->terms") + 1; /** This action is documented in wp-includes/taxonomy.php */ do_action( 'edit_terms', $alias->term_id, $taxonomy ); $wpdb->update( $wpdb->terms, compact('term_group'), array( 'term_id' => $alias->term_id ) ); /** This action is documented in wp-includes/taxonomy.php */ do_action( 'edited_terms', $alias->term_id, $taxonomy ); } } /** * Filter the term parent. * * Hook to this filter to see if it will cause a hierarchy loop. * * @since 3.1.0 * * @param int $parent ID of the parent term. * @param int $term_id Term ID. * @param string $taxonomy Taxonomy slug. * @param array $args Compacted array of update arguments for the given term. * @param array $args An array of update arguments for the given term. */ $parent = apply_filters( 'wp_update_term_parent', $parent, $term_id, $taxonomy, compact( array_keys( $args ) ), $args ); // Check for duplicate slug $id = $wpdb->get_var( $wpdb->prepare( "SELECT term_id FROM $wpdb->terms WHERE slug = %s", $slug ) ); if ( $id && ($id != $term_id) ) { // If an empty slug was passed or the parent changed, reset the slug to something unique. // Otherwise, bail. if ( $empty_slug || ( $parent != $term['parent']) ) $slug = wp_unique_term_slug($slug, (object) $args); else return new WP_Error('duplicate_term_slug', sprintf(__('The slug “%s” is already in use by another term'), $slug)); } /** This action is documented in wp-includes/taxonomy.php */ do_action( 'edit_terms', $term_id, $taxonomy ); $wpdb->update($wpdb->terms, compact( 'name', 'slug', 'term_group' ), compact( 'term_id' ) ); if ( empty($slug) ) { $slug = sanitize_title($name, $term_id); $wpdb->update( $wpdb->terms, compact( 'slug' ), compact( 'term_id' ) ); } /** This action is documented in wp-includes/taxonomy.php */ do_action( 'edited_terms', $term_id, $taxonomy ); $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) ); /** * Fires immediate before a term-taxonomy relationship is updated. * * @since 2.9.0 * * @param int $tt_id Term taxonomy ID. * @param string $taxonomy Taxonomy slug. */ do_action( 'edit_term_taxonomy', $tt_id, $taxonomy ); $wpdb->update( $wpdb->term_taxonomy, compact( 'term_id', 'taxonomy', 'description', 'parent' ), array( 'term_taxonomy_id' => $tt_id ) ); /** * Fires immediately after a term-taxonomy relationship is updated. * * @since 2.9.0 * * @param int $tt_id Term taxonomy ID. * @param string $taxonomy Taxonomy slug. */ do_action( 'edited_term_taxonomy', $tt_id, $taxonomy ); // Clean the relationship caches for all object types using this term $objects = $wpdb->get_col( $wpdb->prepare( "SELECT object_id FROM $wpdb->term_relationships WHERE term_taxonomy_id = %d", $tt_id ) ); $tax_object = get_taxonomy( $taxonomy ); foreach ( $tax_object->object_type as $object_type ) { clean_object_term_cache( $objects, $object_type ); } /** * Fires after a term has been updated, but before the term cache has been cleaned. * * @since 2.3.0 * * @param int $term_id Term ID. * @param int $tt_id Term taxonomy ID. * @param string $taxonomy Taxonomy slug. */ do_action( "edit_term", $term_id, $tt_id, $taxonomy ); /** * Fires after a term in a specific taxonomy has been updated, but before the term * cache has been cleaned. * * The dynamic portion of the hook name, $taxonomy, refers to the taxonomy slug. * * @since 2.3.0 * * @param int $term_id Term ID. * @param int $tt_id Term taxonomy ID. */ do_action( "edit_$taxonomy", $term_id, $tt_id ); /** This filter is documented in wp-includes/taxonomy.php */ $term_id = apply_filters( 'term_id_filter', $term_id, $tt_id ); clean_term_cache($term_id, $taxonomy); /** * Fires after a term has been updated, and the term cache has been cleaned. * * @since 2.3.0 * * @param int $term_id Term ID. * @param int $tt_id Term taxonomy ID. * @param string $taxonomy Taxonomy slug. */ do_action( "edited_term", $term_id, $tt_id, $taxonomy ); /** * Fires after a term for a specific taxonomy has been updated, and the term * cache has been cleaned. * * The dynamic portion of the hook name, $taxonomy, refers to the taxonomy slug. * * @since 2.3.0 * * @param int $term_id Term ID. * @param int $tt_id Term taxonomy ID. */ do_action( "edited_$taxonomy", $term_id, $tt_id ); return array('term_id' => $term_id, 'term_taxonomy_id' => $tt_id); } /** * Enable or disable term counting. * * @since 2.5.0 * * @param bool $defer Optional. Enable if true, disable if false. * @return bool Whether term counting is enabled or disabled. */ function wp_defer_term_counting($defer=null) { static $_defer = false; if ( is_bool($defer) ) { $_defer = $defer; // flush any deferred counts if ( !$defer ) wp_update_term_count( null, null, true ); } return $_defer; } /** * Updates the amount of terms in taxonomy. * * If there is a taxonomy callback applied, then it will be called for updating * the count. * * The default action is to count what the amount of terms have the relationship * of term ID. Once that is done, then update the database. * * @since 2.3.0 * @uses $wpdb * * @param int|array $terms The term_taxonomy_id of the terms * @param string $taxonomy The context of the term. * @return bool If no terms will return false, and if successful will return true. */ function wp_update_term_count( $terms, $taxonomy, $do_deferred=false ) { static $_deferred = array(); if ( $do_deferred ) { foreach ( (array) array_keys($_deferred) as $tax ) { wp_update_term_count_now( $_deferred[$tax], $tax ); unset( $_deferred[$tax] ); } } if ( empty($terms) ) return false; if ( !is_array($terms) ) $terms = array($terms); if ( wp_defer_term_counting() ) { if ( !isset($_deferred[$taxonomy]) ) $_deferred[$taxonomy] = array(); $_deferred[$taxonomy] = array_unique( array_merge($_deferred[$taxonomy], $terms) ); return true; } return wp_update_term_count_now( $terms, $taxonomy ); } /** * Perform term count update immediately. * * @since 2.5.0 * * @param array $terms The term_taxonomy_id of terms to update. * @param string $taxonomy The context of the term. * @return bool Always true when complete. */ function wp_update_term_count_now( $terms, $taxonomy ) { global $wpdb; $terms = array_map('intval', $terms); $taxonomy = get_taxonomy($taxonomy); if ( !empty($taxonomy->update_count_callback) ) { call_user_func($taxonomy->update_count_callback, $terms, $taxonomy); } else { $object_types = (array) $taxonomy->object_type; foreach ( $object_types as &$object_type ) { if ( 0 === strpos( $object_type, 'attachment:' ) ) list( $object_type ) = explode( ':', $object_type ); } if ( $object_types == array_filter( $object_types, 'post_type_exists' ) ) { // Only post types are attached to this taxonomy _update_post_term_count( $terms, $taxonomy ); } else { // Default count updater _update_generic_term_count( $terms, $taxonomy ); } } clean_term_cache($terms, '', false); return true; } // // Cache // /** * Removes the taxonomy relationship to terms from the cache. * * Will remove the entire taxonomy relationship containing term $object_id. The * term IDs have to exist within the taxonomy $object_type for the deletion to * take place. * * @since 2.3.0 * * @see get_object_taxonomies() for more on $object_type * * @param int|array $object_ids Single or list of term object ID(s) * @param array|string $object_type The taxonomy object type */ function clean_object_term_cache($object_ids, $object_type) { if ( !is_array($object_ids) ) $object_ids = array($object_ids); $taxonomies = get_object_taxonomies( $object_type ); foreach ( $object_ids as $id ) { foreach ( $taxonomies as $taxonomy ) { wp_cache_delete($id, "{$taxonomy}_relationships"); } } /** * Fires after the object term cache has been cleaned. * * @since 2.5.0 * * @param array $object_ids An array of object IDs. * @param string $objet_type Object type. */ do_action( 'clean_object_term_cache', $object_ids, $object_type ); } /** * Will remove all of the term ids from the cache. * * @since 2.3.0 * @uses $wpdb * * @param int|array $ids Single or list of Term IDs * @param string $taxonomy Can be empty and will assume tt_ids, else will use for context. * @param bool $clean_taxonomy Whether to clean taxonomy wide caches (true), or just individual term object caches (false). Default is true. */ function clean_term_cache($ids, $taxonomy = '', $clean_taxonomy = true) { global $wpdb; if ( !is_array($ids) ) $ids = array($ids); $taxonomies = array(); // If no taxonomy, assume tt_ids. if ( empty($taxonomy) ) { $tt_ids = array_map('intval', $ids); $tt_ids = implode(', ', $tt_ids); $terms = $wpdb->get_results("SELECT term_id, taxonomy FROM $wpdb->term_taxonomy WHERE term_taxonomy_id IN ($tt_ids)"); $ids = array(); foreach ( (array) $terms as $term ) { $taxonomies[] = $term->taxonomy; $ids[] = $term->term_id; wp_cache_delete($term->term_id, $term->taxonomy); } $taxonomies = array_unique($taxonomies); } else { $taxonomies = array($taxonomy); foreach ( $taxonomies as $taxonomy ) { foreach ( $ids as $id ) { wp_cache_delete($id, $taxonomy); } } } foreach ( $taxonomies as $taxonomy ) { if ( $clean_taxonomy ) { wp_cache_delete('all_ids', $taxonomy); wp_cache_delete('get', $taxonomy); delete_option("{$taxonomy}_children"); // Regenerate {$taxonomy}_children _get_term_hierarchy($taxonomy); } /** * Fires once after each taxonomy's term cache has been cleaned. * * @since 2.5.0 * * @param array $ids An array of term IDs. * @param string $taxonomy Taxonomy slug. */ do_action( 'clean_term_cache', $ids, $taxonomy ); } wp_cache_set( 'last_changed', microtime(), 'terms' ); } /** * Retrieves the taxonomy relationship to the term object id. * * @since 2.3.0 * * @uses wp_cache_get() Retrieves taxonomy relationship from cache * * @param int|array $id Term object ID * @param string $taxonomy Taxonomy Name * @return bool|array Empty array if $terms found, but not $taxonomy. False if nothing is in cache for $taxonomy and $id. */ function get_object_term_cache($id, $taxonomy) { $cache = wp_cache_get($id, "{$taxonomy}_relationships"); return $cache; } /** * Updates the cache for Term ID(s). * * Will only update the cache for terms not already cached. * * The $object_ids expects that the ids be separated by commas, if it is a * string. * * It should be noted that update_object_term_cache() is very time extensive. It * is advised that the function is not called very often or at least not for a * lot of terms that exist in a lot of taxonomies. The amount of time increases * for each term and it also increases for each taxonomy the term belongs to. * * @since 2.3.0 * @uses wp_get_object_terms() Used to get terms from the database to update * * @param string|array $object_ids Single or list of term object ID(s) * @param array|string $object_type The taxonomy object type * @return null|bool Null value is given with empty $object_ids. False if */ function update_object_term_cache($object_ids, $object_type) { if ( empty($object_ids) ) return; if ( !is_array($object_ids) ) $object_ids = explode(',', $object_ids); $object_ids = array_map('intval', $object_ids); $taxonomies = get_object_taxonomies($object_type); $ids = array(); foreach ( (array) $object_ids as $id ) { foreach ( $taxonomies as $taxonomy ) { if ( false === wp_cache_get($id, "{$taxonomy}_relationships") ) { $ids[] = $id; break; } } } if ( empty( $ids ) ) return false; $terms = wp_get_object_terms($ids, $taxonomies, array('fields' => 'all_with_object_id')); $object_terms = array(); foreach ( (array) $terms as $term ) $object_terms[$term->object_id][$term->taxonomy][$term->term_id] = $term; foreach ( $ids as $id ) { foreach ( $taxonomies as $taxonomy ) { if ( ! isset($object_terms[$id][$taxonomy]) ) { if ( !isset($object_terms[$id]) ) $object_terms[$id] = array(); $object_terms[$id][$taxonomy] = array(); } } } foreach ( $object_terms as $id => $value ) { foreach ( $value as $taxonomy => $terms ) { wp_cache_add( $id, $terms, "{$taxonomy}_relationships" ); } } } /** * Updates Terms to Taxonomy in cache. * * @since 2.3.0 * * @param array $terms List of Term objects to change * @param string $taxonomy Optional. Update Term to this taxonomy in cache */ function update_term_cache($terms, $taxonomy = '') { foreach ( (array) $terms as $term ) { $term_taxonomy = $taxonomy; if ( empty($term_taxonomy) ) $term_taxonomy = $term->taxonomy; wp_cache_add($term->term_id, $term, $term_taxonomy); } } // // Private // /** * Retrieves children of taxonomy as Term IDs. * * @access private * @since 2.3.0 * * @uses update_option() Stores all of the children in "$taxonomy_children" * option. That is the name of the taxonomy, immediately followed by '_children'. * * @param string $taxonomy Taxonomy Name * @return array Empty if $taxonomy isn't hierarchical or returns children as Term IDs. */ function _get_term_hierarchy($taxonomy) { if ( !is_taxonomy_hierarchical($taxonomy) ) return array(); $children = get_option("{$taxonomy}_children"); if ( is_array($children) ) return $children; $children = array(); $terms = get_terms($taxonomy, array('get' => 'all', 'orderby' => 'id', 'fields' => 'id=>parent')); foreach ( $terms as $term_id => $parent ) { if ( $parent > 0 ) $children[$parent][] = $term_id; } update_option("{$taxonomy}_children", $children); return $children; } /** * Get the subset of $terms that are descendants of $term_id. * * If $terms is an array of objects, then _get_term_children returns an array of objects. * If $terms is an array of IDs, then _get_term_children returns an array of IDs. * * @access private * @since 2.3.0 * * @param int $term_id The ancestor term: all returned terms should be descendants of $term_id. * @param array $terms The set of terms---either an array of term objects or term IDs---from which those that are descendants of $term_id will be chosen. * @param string $taxonomy The taxonomy which determines the hierarchy of the terms. * @return array The subset of $terms that are descendants of $term_id. */ function _get_term_children($term_id, $terms, $taxonomy) { $empty_array = array(); if ( empty($terms) ) return $empty_array; $term_list = array(); $has_children = _get_term_hierarchy($taxonomy); if ( ( 0 != $term_id ) && ! isset($has_children[$term_id]) ) return $empty_array; foreach ( (array) $terms as $term ) { $use_id = false; if ( !is_object($term) ) { $term = get_term($term, $taxonomy); if ( is_wp_error( $term ) ) return $term; $use_id = true; } if ( $term->term_id == $term_id ) { continue; } if ( $term->parent == $term_id ) { if ( $use_id ) $term_list[] = $term->term_id; else $term_list[] = $term; if ( !isset($has_children[$term->term_id]) ) continue; if ( $children = _get_term_children($term->term_id, $terms, $taxonomy) ) $term_list = array_merge($term_list, $children); } } return $term_list; } /** * Add count of children to parent count. * * Recalculates term counts by including items from child terms. Assumes all * relevant children are already in the $terms argument. * * @access private * @since 2.3.0 * @uses $wpdb * * @param array $terms List of Term IDs * @param string $taxonomy Term Context * @return null Will break from function if conditions are not met. */ function _pad_term_counts(&$terms, $taxonomy) { global $wpdb; // This function only works for hierarchical taxonomies like post categories. if ( !is_taxonomy_hierarchical( $taxonomy ) ) return; $term_hier = _get_term_hierarchy($taxonomy); if ( empty($term_hier) ) return; $term_items = array(); foreach ( (array) $terms as $key => $term ) { $terms_by_id[$term->term_id] = & $terms[$key]; $term_ids[$term->term_taxonomy_id] = $term->term_id; } // Get the object and term ids and stick them in a lookup table $tax_obj = get_taxonomy($taxonomy); $object_types = esc_sql($tax_obj->object_type); $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'"); foreach ( $results as $row ) { $id = $term_ids[$row->term_taxonomy_id]; $term_items[$id][$row->object_id] = isset($term_items[$id][$row->object_id]) ? ++$term_items[$id][$row->object_id] : 1; } // Touch every ancestor's lookup row for each post in each term foreach ( $term_ids as $term_id ) { $child = $term_id; while ( !empty( $terms_by_id[$child] ) && $parent = $terms_by_id[$child]->parent ) { if ( !empty( $term_items[$term_id] ) ) foreach ( $term_items[$term_id] as $item_id => $touches ) { $term_items[$parent][$item_id] = isset($term_items[$parent][$item_id]) ? ++$term_items[$parent][$item_id]: 1; } $child = $parent; } } // Transfer the touched cells foreach ( (array) $term_items as $id => $items ) if ( isset($terms_by_id[$id]) ) $terms_by_id[$id]->count = count($items); } // // Default callbacks // /** * Will update term count based on object types of the current taxonomy. * * Private function for the default callback for post_tag and category * taxonomies. * * @access private * @since 2.3.0 * @uses $wpdb * * @param array $terms List of Term taxonomy IDs * @param object $taxonomy Current taxonomy object of terms */ function _update_post_term_count( $terms, $taxonomy ) { global $wpdb; $object_types = (array) $taxonomy->object_type; foreach ( $object_types as &$object_type ) list( $object_type ) = explode( ':', $object_type ); $object_types = array_unique( $object_types ); if ( false !== ( $check_attachments = array_search( 'attachment', $object_types ) ) ) { unset( $object_types[ $check_attachments ] ); $check_attachments = true; } if ( $object_types ) $object_types = esc_sql( array_filter( $object_types, 'post_type_exists' ) ); foreach ( (array) $terms as $term ) { $count = 0; // Attachments can be 'inherit' status, we need to base count off the parent's status if so if ( $check_attachments ) $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 = 'publish' OR ( post_status = 'inherit' AND post_parent > 0 AND ( SELECT post_status FROM $wpdb->posts WHERE ID = p1.post_parent ) = 'publish' ) ) AND post_type = 'attachment' AND term_taxonomy_id = %d", $term ) ); if ( $object_types ) $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 = 'publish' AND post_type IN ('" . implode("', '", $object_types ) . "') AND term_taxonomy_id = %d", $term ) ); /** This action is documented in wp-includes/taxonomy.php */ do_action( 'edit_term_taxonomy', $term, $taxonomy ); $wpdb->update( $wpdb->term_taxonomy, compact( 'count' ), array( 'term_taxonomy_id' => $term ) ); /** This action is documented in wp-includes/taxonomy.php */ do_action( 'edited_term_taxonomy', $term, $taxonomy ); } } /** * Will update term count based on number of objects. * * Default callback for the link_category taxonomy. * * @since 3.3.0 * @uses $wpdb * * @param array $terms List of Term taxonomy IDs * @param object $taxonomy Current taxonomy object of terms */ function _update_generic_term_count( $terms, $taxonomy ) { global $wpdb; foreach ( (array) $terms as $term ) { $count = $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->term_relationships WHERE term_taxonomy_id = %d", $term ) ); /** This action is documented in wp-includes/taxonomy.php */ do_action( 'edit_term_taxonomy', $term, $taxonomy ); $wpdb->update( $wpdb->term_taxonomy, compact( 'count' ), array( 'term_taxonomy_id' => $term ) ); /** This action is documented in wp-includes/taxonomy.php */ do_action( 'edited_term_taxonomy', $term, $taxonomy ); } } /** * Generates a permalink for a taxonomy term archive. * * @since 2.5.0 * * @param object|int|string $term * @param string $taxonomy (optional if $term is object) * @return string|WP_Error HTML link to taxonomy term archive on success, WP_Error if term does not exist. */ function get_term_link( $term, $taxonomy = '') { global $wp_rewrite; if ( !is_object($term) ) { if ( is_int($term) ) { $term = get_term($term, $taxonomy); } else { $term = get_term_by('slug', $term, $taxonomy); } } if ( !is_object($term) ) $term = new WP_Error('invalid_term', __('Empty Term')); if ( is_wp_error( $term ) ) return $term; $taxonomy = $term->taxonomy; $termlink = $wp_rewrite->get_extra_permastruct($taxonomy); $slug = $term->slug; $t = get_taxonomy($taxonomy); if ( empty($termlink) ) { if ( 'category' == $taxonomy ) $termlink = '?cat=' . $term->term_id; elseif ( $t->query_var ) $termlink = "?$t->query_var=$slug"; else $termlink = "?taxonomy=$taxonomy&term=$slug"; $termlink = home_url($termlink); } else { if ( $t->rewrite['hierarchical'] ) { $hierarchical_slugs = array(); $ancestors = get_ancestors($term->term_id, $taxonomy); foreach ( (array)$ancestors as $ancestor ) { $ancestor_term = get_term($ancestor, $taxonomy); $hierarchical_slugs[] = $ancestor_term->slug; } $hierarchical_slugs = array_reverse($hierarchical_slugs); $hierarchical_slugs[] = $slug; $termlink = str_replace("%$taxonomy%", implode('/', $hierarchical_slugs), $termlink); } else { $termlink = str_replace("%$taxonomy%", $slug, $termlink); } $termlink = home_url( user_trailingslashit($termlink, 'category') ); } // Back Compat filters. if ( 'post_tag' == $taxonomy ) { /** * Filter the tag link. * * @since 2.3.0 * @deprecated 2.5.0 Use 'term_link' instead. * * @param string $termlink Tag link URL. * @param int $term_id Term ID. */ $termlink = apply_filters( 'tag_link', $termlink, $term->term_id ); } elseif ( 'category' == $taxonomy ) { /** * Filter the category link. * * @since 1.5.0 * @deprecated 2.5.0 Use 'term_link' instead. * * @param string $termlink Category link URL. * @param int $term_id Term ID. */ $termlink = apply_filters( 'category_link', $termlink, $term->term_id ); } /** * Filter the term link. * * @since 2.5.0 * * @param string $termlink Term link URL. * @param object $term Term object. * @param string $taxonomy Taxonomy slug. */ return apply_filters( 'term_link', $termlink, $term, $taxonomy ); } /** * Display the taxonomies of a post with available options. * * This function can be used within the loop to display the taxonomies for a * post without specifying the Post ID. You can also use it outside the Loop to * display the taxonomies for a specific post. * * The available defaults are: * 'post' : default is 0. The post ID to get taxonomies of. * 'before' : default is empty string. Display before taxonomies list. * 'sep' : default is empty string. Separate every taxonomy with value in this. * 'after' : default is empty string. Display this after the taxonomies list. * 'template' : The template to use for displaying the taxonomy terms. * * @since 2.5.0 * @uses get_the_taxonomies() * * @param array $args Override the defaults. */ function the_taxonomies($args = array()) { $defaults = array( 'post' => 0, 'before' => '', 'sep' => ' ', 'after' => '', 'template' => '%s: %l.' ); $r = wp_parse_args( $args, $defaults ); extract( $r, EXTR_SKIP ); echo $before . join($sep, get_the_taxonomies($post, $r)) . $after; } /** * Retrieve all taxonomies associated with a post. * * This function can be used within the loop. It will also return an array of * the taxonomies with links to the taxonomy and name. * * @since 2.5.0 * * @param int|WP_Post $post Optional. Post ID or post object. * @param array $args Override the defaults. * @return array */ function get_the_taxonomies($post = 0, $args = array() ) { $post = get_post( $post ); $args = wp_parse_args( $args, array( 'template' => '%s: %l.', ) ); extract( $args, EXTR_SKIP ); $taxonomies = array(); if ( !$post ) return $taxonomies; foreach ( get_object_taxonomies($post) as $taxonomy ) { $t = (array) get_taxonomy($taxonomy); if ( empty($t['label']) ) $t['label'] = $taxonomy; if ( empty($t['args']) ) $t['args'] = array(); if ( empty($t['template']) ) $t['template'] = $template; $terms = get_object_term_cache($post->ID, $taxonomy); if ( false === $terms ) $terms = wp_get_object_terms($post->ID, $taxonomy, $t['args']); $links = array(); foreach ( $terms as $term ) $links[] = "$term->name"; if ( $links ) $taxonomies[$taxonomy] = wp_sprintf($t['template'], $t['label'], $links, $terms); } return $taxonomies; } /** * Retrieve all taxonomies of a post with just the names. * * @since 2.5.0 * @uses get_object_taxonomies() * * @param int|WP_Post $post Optional. Post ID or post object. * @return array */ function get_post_taxonomies($post = 0) { $post = get_post( $post ); return get_object_taxonomies($post); } /** * Determine if the given object is associated with any of the given terms. * * The given terms are checked against the object's terms' term_ids, names and slugs. * Terms given as integers will only be checked against the object's terms' term_ids. * If no terms are given, determines if object is associated with any terms in the given taxonomy. * * @since 2.7.0 * @uses get_object_term_cache() * @uses wp_get_object_terms() * * @param int $object_id ID of the object (post ID, link ID, ...) * @param string $taxonomy Single taxonomy name * @param int|string|array $terms Optional. Term term_id, name, slug or array of said * @return bool|WP_Error. WP_Error on input error. */ function is_object_in_term( $object_id, $taxonomy, $terms = null ) { if ( !$object_id = (int) $object_id ) return new WP_Error( 'invalid_object', __( 'Invalid object ID' ) ); $object_terms = get_object_term_cache( $object_id, $taxonomy ); if ( false === $object_terms ) $object_terms = wp_get_object_terms( $object_id, $taxonomy ); if ( is_wp_error( $object_terms ) ) return $object_terms; if ( empty( $object_terms ) ) return false; if ( empty( $terms ) ) return ( !empty( $object_terms ) ); $terms = (array) $terms; if ( $ints = array_filter( $terms, 'is_int' ) ) $strs = array_diff( $terms, $ints ); else $strs =& $terms; foreach ( $object_terms as $object_term ) { if ( $ints && in_array( $object_term->term_id, $ints ) ) return true; // If int, check against term_id if ( $strs ) { if ( in_array( $object_term->term_id, $strs ) ) return true; if ( in_array( $object_term->name, $strs ) ) return true; if ( in_array( $object_term->slug, $strs ) ) return true; } } return false; } /** * Determine if the given object type is associated with the given taxonomy. * * @since 3.0.0 * @uses get_object_taxonomies() * * @param string $object_type Object type string * @param string $taxonomy Single taxonomy name * @return bool True if object is associated with the taxonomy, otherwise false. */ function is_object_in_taxonomy($object_type, $taxonomy) { $taxonomies = get_object_taxonomies($object_type); if ( empty($taxonomies) ) return false; if ( in_array($taxonomy, $taxonomies) ) return true; return false; } /** * Get an array of ancestor IDs for a given object. * * @param int $object_id The ID of the object * @param string $object_type The type of object for which we'll be retrieving ancestors. * @return array of ancestors from lowest to highest in the hierarchy. */ function get_ancestors($object_id = 0, $object_type = '') { $object_id = (int) $object_id; $ancestors = array(); if ( empty( $object_id ) ) { /** This filter is documented in wp-includes/taxonomy.php */ return apply_filters( 'get_ancestors', $ancestors, $object_id, $object_type ); } if ( is_taxonomy_hierarchical( $object_type ) ) { $term = get_term($object_id, $object_type); while ( ! is_wp_error($term) && ! empty( $term->parent ) && ! in_array( $term->parent, $ancestors ) ) { $ancestors[] = (int) $term->parent; $term = get_term($term->parent, $object_type); } } elseif ( post_type_exists( $object_type ) ) { $ancestors = get_post_ancestors($object_id); } /** * Filter a given object's ancestors. * * @since 3.1.0 * * @param array $ancestors An array of object ancestors. * @param int $object_id Object ID. * @param string $object_type Type of object. */ return apply_filters( 'get_ancestors', $ancestors, $object_id, $object_type ); } /** * Returns the term's parent's term_ID * * @since 3.1.0 * * @param int $term_id * @param string $taxonomy * * @return int|bool false on error */ function wp_get_term_taxonomy_parent_id( $term_id, $taxonomy ) { $term = get_term( $term_id, $taxonomy ); if ( !$term || is_wp_error( $term ) ) return false; return (int) $term->parent; } /** * Checks the given subset of the term hierarchy for hierarchy loops. * Prevents loops from forming and breaks those that it finds. * * Attached to the wp_update_term_parent filter. * * @since 3.1.0 * @uses wp_find_hierarchy_loop() * * @param int $parent term_id of the parent for the term we're checking. * @param int $term_id The term we're checking. * @param string $taxonomy The taxonomy of the term we're checking. * * @return int The new parent for the term. */ function wp_check_term_hierarchy_for_loops( $parent, $term_id, $taxonomy ) { // Nothing fancy here - bail if ( !$parent ) return 0; // Can't be its own parent if ( $parent == $term_id ) return 0; // Now look for larger loops if ( !$loop = wp_find_hierarchy_loop( 'wp_get_term_taxonomy_parent_id', $term_id, $parent, array( $taxonomy ) ) ) return $parent; // No loop // Setting $parent to the given value causes a loop if ( isset( $loop[$term_id] ) ) return 0; // There's a loop, but it doesn't contain $term_id. Break the loop. foreach ( array_keys( $loop ) as $loop_member ) wp_update_term( $loop_member, $taxonomy, array( 'parent' => 0 ) ); return $parent; }