/wp-includes/taxonomy.php
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- <?php
- /**
- * Taxonomy API
- *
- * @package WordPress
- * @subpackage Taxonomy
- * @since 2.3.0
- */
- //
- // Taxonomy Registration
- //
- /**
- * Creates the initial taxonomies.
- *
- * This function fires twice: in wp-settings.php before plugins are loaded (for
- * backwards compatibility reasons), and again on the 'init' action. We must avoid
- * registering rewrite rules before the 'init' action.
- */
- function create_initial_taxonomies() {
- global $wp_rewrite;
- if ( ! did_action( 'init' ) ) {
- $rewrite = array( 'category' => false, 'post_tag' => false, 'post_format' => false );
- } else {
- $post_format_base = apply_filters( 'post_format_rewrite_base', 'type' );
- $rewrite = array(
- 'category' => array(
- 'hierarchical' => true,
- 'slug' => get_option('category_base') ? get_option('category_base') : 'category',
- 'with_front' => ! get_option('category_base') || $wp_rewrite->using_index_permalinks(),
- 'ep_mask' => EP_CATEGORIES,
- ),
- 'post_tag' => array(
- 'slug' => get_option('tag_base') ? get_option('tag_base') : 'tag',
- 'with_front' => ! get_option('tag_base') || $wp_rewrite->using_index_permalinks(),
- 'ep_mask' => EP_TAGS,
- ),
- 'post_format' => $post_format_base ? array( 'slug' => $post_format_base ) : false,
- );
- }
- register_taxonomy( 'category', 'post', array(
- 'hierarchical' => true,
- 'query_var' => 'category_name',
- 'rewrite' => $rewrite['category'],
- 'public' => true,
- 'show_ui' => true,
- 'show_admin_column' => true,
- '_builtin' => true,
- ) );
- register_taxonomy( 'post_tag', 'post', array(
- 'hierarchical' => false,
- 'query_var' => 'tag',
- 'rewrite' => $rewrite['post_tag'],
- 'public' => true,
- 'show_ui' => true,
- 'show_admin_column' => true,
- '_builtin' => true,
- ) );
- register_taxonomy( 'nav_menu', 'nav_menu_item', array(
- 'public' => false,
- 'hierarchical' => false,
- 'labels' => array(
- 'name' => __( 'Navigation Menus' ),
- 'singular_name' => __( 'Navigation Menu' ),
- ),
- 'query_var' => false,
- 'rewrite' => false,
- 'show_ui' => false,
- '_builtin' => true,
- 'show_in_nav_menus' => false,
- ) );
- register_taxonomy( 'link_category', 'link', array(
- 'hierarchical' => false,
- 'labels' => array(
- 'name' => __( 'Link Categories' ),
- 'singular_name' => __( 'Link Category' ),
- 'search_items' => __( 'Search Link Categories' ),
- 'popular_items' => null,
- 'all_items' => __( 'All Link Categories' ),
- 'edit_item' => __( 'Edit Link Category' ),
- 'update_item' => __( 'Update Link Category' ),
- 'add_new_item' => __( 'Add New Link Category' ),
- 'new_item_name' => __( 'New Link Category Name' ),
- 'separate_items_with_commas' => null,
- 'add_or_remove_items' => null,
- 'choose_from_most_used' => null,
- ),
- 'capabilities' => array(
- 'manage_terms' => 'manage_links',
- 'edit_terms' => 'manage_links',
- 'delete_terms' => 'manage_links',
- 'assign_terms' => 'manage_links',
- ),
- 'query_var' => false,
- 'rewrite' => false,
- 'public' => false,
- 'show_ui' => false,
- '_builtin' => true,
- ) );
- register_taxonomy( 'post_format', 'post', array(
- 'public' => true,
- 'hierarchical' => false,
- 'labels' => array(
- 'name' => _x( 'Format', 'post format' ),
- 'singular_name' => _x( 'Format', 'post format' ),
- ),
- 'query_var' => true,
- 'rewrite' => $rewrite['post_format'],
- 'show_ui' => false,
- '_builtin' => true,
- 'show_in_nav_menus' => current_theme_supports( 'post-formats' ),
- ) );
- }
- add_action( 'init', 'create_initial_taxonomies', 0 ); // highest priority
- /**
- * Get a list of registered taxonomy objects.
- *
- * @package WordPress
- * @subpackage Taxonomy
- * @since 3.0.0
- * @uses $wp_taxonomies
- * @see register_taxonomy
- *
- * @param array $args An array of key => value arguments to match against the taxonomy objects.
- * @param string $output The type of output to return, either taxonomy 'names' or 'objects'. 'names' is the default.
- * @param string $operator The logical operation to perform. 'or' means only one element
- * from the array needs to match; 'and' means all elements must match. The default is 'and'.
- * @return array A list of taxonomy names or objects
- */
- function get_taxonomies( $args = array(), $output = 'names', $operator = 'and' ) {
- global $wp_taxonomies;
- $field = ('names' == $output) ? 'name' : false;
- return wp_filter_object_list($wp_taxonomies, $args, $operator, $field);
- }
- /**
- * Return all of the taxonomy names that are of $object_type.
- *
- * It appears that this function can be used to find all of the names inside of
- * $wp_taxonomies global variable.
- *
- * <code><?php $taxonomies = get_object_taxonomies('post'); ?></code> Should
- * result in <code>Array('category', 'post_tag')</code>
- *
- * @package WordPress
- * @subpackage Taxonomy
- * @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.
- *
- * @package WordPress
- * @subpackage Taxonomy
- * @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.
- *
- * @package WordPress
- * @subpackage Taxonomy
- * @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.
- *
- * @package WordPress
- * @subpackage Taxonomy
- * @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 $args contents:
- *
- * label - Name of the taxonomy shown in the menu. Usually plural. If not set, labels['name'] will be used.
- *
- * hierarchical - has some defined purpose at other parts of the API and is a
- * boolean value.
- *
- * update_count_callback - works much like a hook, in that it will be called when the count is updated.
- * Defaults to _update_post_term_count() for taxonomies attached to post types, which then confirms
- * that the objects are published before counting them.
- * Defaults to _update_generic_term_count() for taxonomies attached to other object types, such as links.
- *
- * rewrite - false to prevent rewrite, or array('slug'=>$slug) to customize
- * permastruct; default will use $taxonomy as slug.
- *
- * query_var - false to prevent queries, or string to customize query var
- * (?$query_var=$term); default will use $taxonomy as query var.
- *
- * public - If the taxonomy should be publicly queryable; //@TODO not implemented.
- * defaults to true.
- *
- * show_ui - If the WordPress UI admin tags UI should apply to this taxonomy;
- * defaults to public.
- *
- * show_in_nav_menus - true makes this taxonomy available for selection in navigation menus.
- * Defaults to public.
- *
- * show_tagcloud - false to prevent the taxonomy being listed in the Tag Cloud Widget;
- * defaults to show_ui which defaults to public.
- *
- * labels - An array of labels for this taxonomy. You can see accepted values in {@link get_taxonomy_labels()}. By default tag labels are used for non-hierarchical types and category labels for hierarchical ones.
- *
- * @package WordPress
- * @subpackage Taxonomy
- * @since 2.3.0
- * @uses $wp_taxonomies Inserts new taxonomy object into the list
- * @uses $wp Adds query vars
- *
- * @param string $taxonomy Name of taxonomy object
- * @param array|string $object_type Name of the object type for the taxonomy object.
- * @param array|string $args See above description for the two keys values.
- * @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( 'hierarchical' => false,
- 'update_count_callback' => '',
- 'rewrite' => true,
- 'query_var' => $taxonomy,
- 'public' => true,
- 'show_ui' => null,
- 'show_tagcloud' => null,
- '_builtin' => false,
- 'labels' => array(),
- 'capabilities' => array(),
- 'show_in_nav_menus' => null,
- );
- $args = wp_parse_args($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(
- 'slug' => sanitize_title_with_dashes($taxonomy),
- 'with_front' => true,
- 'hierarchical' => false,
- 'ep_mask' => EP_NONE,
- ));
- 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%", $args['rewrite'] );
- }
- if ( is_null($args['show_ui']) )
- $args['show_ui'] = $args['public'];
- // Whether to show this type in nav-menus.php. Defaults to the setting for public.
- if ( null === $args['show_in_nav_menus'] )
- $args['show_in_nav_menus'] = $args['public'];
- if ( is_null($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;
- $wp_taxonomies[$taxonomy] = (object) $args;
- // register callback handling for metabox
- add_filter('wp_ajax_add-' . $taxonomy, '_wp_ajax_add_hierarchical_term');
- 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 <code>parent_item</code>, but with colon <code>:</code> 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.
- *
- * 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 ) {
- if ( isset( $tax->helps ) && empty( $tax->labels['separate_items_with_commas'] ) )
- $tax->labels['separate_items_with_commas'] = $tax->helps;
- $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 ),
- );
- $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.
- *
- * @package WordPress
- * @subpackage Taxonomy
- * @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;
- }
- //
- // 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'.
- *
- * @package WordPress
- * @subpackage Taxonomy
- * @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 = esc_sql( $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.
- *
- * @package WordPress
- * @subpackage Taxonomy
- * @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;
- $null = null;
- if ( empty($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);
- }
- }
- $_term = apply_filters('get_term', $_term, $taxonomy);
- $_term = apply_filters("get_$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.
- *
- * @package WordPress
- * @subpackage Taxonomy
- * @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', or '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
- $value = stripslashes($value);
- $field = 't.name';
- } 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);
- $term = apply_filters('get_term', $term, $taxonomy);
- $term = apply_filters("get_$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.
- *
- * @package WordPress
- * @subpackage 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 Objects. 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 $child ) {
- if ( isset($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.
- *
- * @package WordPress
- * @subpackage Taxonomy
- * @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.
- *
- * @package WordPress
- * @subpackage Taxonomy
- * @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 begin with the value of 'name__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'.
- *
- * @package WordPress
- * @subpackage Taxonomy
- * @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' => '',
- '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($taxonomies[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;
- }
- $args = apply_filters( 'get_terms_args', $args, $taxonomies );
- extract($args, EXTR_SKIP);
- if ( $child_of ) {
- $hierarchy = _get_term_hierarchy($taxonomies[0]);
- if ( !isset($hierarchy[$child_of]) )
- return $empty_array;
- }
- if ( $parent ) {
- $hierarchy = _get_term_hierarchy($taxonomies[0]);
- 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 = time();
- 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 ) {
- $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';
- $orderby = apply_filters( 'get_terms_orderby', $orderby, $args );
- if ( !empty($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 = '';
- $interms = wp_parse_id_list($include);
- foreach ( $interms as $interm ) {
- if ( empty($inclusions) )
- $inclusions = ' AND ( t.term_id = ' . intval($interm) . ' ';
- else
- $inclusions .= ' OR t.term_id = ' . intval($interm) . ' ';
- }
- }
- if ( !empty($inclusions) )
- $inclusions .= ')';
- $where .= $inclusions;
- $exclusions = '';
- if ( !empty( $exclude_tree ) ) {
- $excluded_trunks = wp_parse_id_list($exclude_tree);
- foreach ( $excluded_trunks as $extrunk ) {
- $excluded_children = (array) get_terms($taxonomies[0], array('child_of' => intval($extrunk), 'fields' => 'ids', 'hide_empty' => 0));
- $excluded_children[] = $extrunk;
- foreach( $excluded_children as $exterm ) {
- if ( empty($exclusions) )
- $exclusions = ' AND ( t.term_id <> ' . intval($exterm) . ' ';
- else
- $exclusions .= ' AND t.term_id <> ' . intval($exterm) . ' ';
- }
- }
- }
- if ( !empty($exclude) ) {
- $exterms = wp_parse_id_list($exclude);
- foreach ( $exterms as $exterm ) {
- if ( empty($exclusions) )
- $exclusions = ' AND ( t.term_id <> ' . intval($exterm) . ' ';
- else
- $exclusions .= ' AND t.term_id <> ' . intval($exterm) . ' ';
- }
- }
- if ( !empty($exclusions) )
- $exclusions .= ')';
- $exclusions = apply_filters('list_terms_exclusions', $exclusions, $args );
- $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 ( '' !== $parent ) {
- $parent = (int) $parent;
- $where .= " AND tt.parent = '$parent'";
- }
- if ( $hide_empty && !$hierarchical )
- $where .= ' AND tt.count > 0';
- // don't limit the query results when we have to descend the family tree
- if ( ! empty($number) && ! $hierarchical && empty( $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)", '%' . $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(*)');
- }
- $_fields = $fields;
- $fields = implode(', ', apply_filters( 'get_terms_fields', $selects, $args ));
- $join = "INNER JOIN $wpdb->term_taxonomy AS tt ON t.term_id = tt.term_id";
- $pieces = array( 'fields', 'join', 'where', 'orderby', 'order', 'limits' );
- $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 );
- $terms = apply_filters('get_terms', array(), $taxonomies, $args);
- return $terms;
- }
- if ( $child_of ) {
- $children = _get_term_hierarchy($taxonomies[0]);
- if ( ! empty($children) )
- $terms = _get_term_children($child_of, $terms, $taxonomies[0]);
- }
- // Update term counts to include children.
- if ( $pad_counts && 'all' == $fields )
- _pad_term_counts($terms, $taxonomies[0]);
- // 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, $terms, $taxonomies[0]);
- if ( is_array($children) )
- foreach ( $children as $child )
- 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;
- $terms = $_terms;
- } elseif ( 'ids' == $fields ) {
- while ( $term = array_shift($terms) )
- $_terms[] = $term->term_id;
- $terms = $_terms;
- } elseif ( 'names' == $fields ) {
- while ( $term = array_shift($terms) )
- $_terms[] = $term->name;
- $terms = $_terms;
- }
- if ( 0 < $number && intval(@count($terms)) > $number ) {
- $terms = array_slice($terms, $offset, $number);
- }
- wp_cache_add( $cache_key, $terms, 'terms', DAY_IN_SECONDS );
- $terms = apply_filters('get_terms', $terms, $taxonomies, $args);
- return $terms;
- }
- /**
- * Check if Term exists.
- *
- * Formerly is_term(), introduced in 2.3.0.
- *
- * @package WordPress
- * @subpackage Taxonomy
- * @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( stripslashes( $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 W…
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