diff -r a4642baaf829 -r 4d4862461b8d web/wp-includes/taxonomy.php --- a/web/wp-includes/taxonomy.php Tue Feb 02 14:45:47 2010 +0000 +++ b/web/wp-includes/taxonomy.php Tue Feb 02 15:44:16 2010 +0000 @@ -1,2352 +1,2377 @@ - true, 'update_count_callback' => '_update_post_term_count', 'label' => __('Categories'), 'query_var' => false, 'rewrite' => false) ) ; - register_taxonomy( 'post_tag', 'post', array('hierarchical' => false, 'update_count_callback' => '_update_post_term_count', 'label' => __('Post Tags'), 'query_var' => false, 'rewrite' => false) ) ; - register_taxonomy( 'link_category', 'link', array('hierarchical' => false, 'label' => __('Categories'), 'query_var' => false, 'rewrite' => false) ) ; -} -add_action( 'init', 'create_initial_taxonomies', 0 ); // highest priority - -/** - * 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. - * - * Should - * result in Array('category', 'post_tag') - * - * @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) - * @return array The names of all taxonomy of $object_type. - */ -function get_object_taxonomies($object) { - 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 $taxonomy ) { - if ( array_intersect($object, (array) $taxonomy->object_type) ) - $taxonomies[] = $taxonomy->name; - } - - 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 is_taxonomy() 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 $wp_taxonomies; - - if ( ! is_taxonomy($taxonomy) ) - return false; - - return $wp_taxonomies[$taxonomy]; -} - -/** - * Checks that the taxonomy name exists. - * - * @package WordPress - * @subpackage Taxonomy - * @since 2.3.0 - * - * @uses $wp_taxonomies - * - * @param string $taxonomy Name of taxonomy object - * @return bool Whether the taxonomy exists or not. - */ -function is_taxonomy( $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 is_taxonomy() 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 ( ! is_taxonomy($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 is_taxonomy() to check - * whether taxonomy exists. - * - * Optional $args contents: - * - * hierarachical - has some defined purpose at other parts of the API and is a - * boolean value. - * - * update_count_callback - works much like a hook, in that it will be called - * when the count is updated. - * - * rewrite - false to prevent rewrite, or array('slug'=>$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. - * - * @package WordPress - * @subpackage Taxonomy - * @since 2.3.0 - * @uses $wp_taxonomies Inserts new taxonomy object into the list - * @uses $wp_rewrite Adds rewrite tags and permastructs - * @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. - */ -function register_taxonomy( $taxonomy, $object_type, $args = array() ) { - global $wp_taxonomies, $wp_rewrite, $wp; - - if (!is_array($wp_taxonomies)) - $wp_taxonomies = array(); - - $defaults = array('hierarchical' => false, 'update_count_callback' => '', 'rewrite' => true, 'query_var' => true); - $args = wp_parse_args($args, $defaults); - - if ( false !== $args['query_var'] && !empty($wp) ) { - if ( true === $args['query_var'] ) - $args['query_var'] = $taxonomy; - $args['query_var'] = sanitize_title_with_dashes($args['query_var']); - $wp->add_query_var($args['query_var']); - } - - if ( false !== $args['rewrite'] && !empty($wp_rewrite) ) { - if ( !is_array($args['rewrite']) ) - $args['rewrite'] = array(); - if ( !isset($args['rewrite']['slug']) ) - $args['rewrite']['slug'] = sanitize_title_with_dashes($taxonomy); - $wp_rewrite->add_rewrite_tag("%$taxonomy%", '([^/]+)', $args['query_var'] ? "{$args['query_var']}=" : "taxonomy=$taxonomy&term=$term"); - $wp_rewrite->add_permastruct($taxonomy, "{$args['rewrite']['slug']}/%$taxonomy%"); - } - - $args['name'] = $taxonomy; - $args['object_type'] = $object_type; - $wp_taxonomies[$taxonomy] = (object) $args; -} - -// -// 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 string|array $terms String of term or array of string values 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( $terms, $taxonomies, $args = array() ) { - global $wpdb; - - if ( !is_array( $terms) ) - $terms = array($terms); - - if ( !is_array($taxonomies) ) - $taxonomies = array($taxonomies); - - foreach ( (array) $taxonomies as $taxonomy ) { - if ( ! is_taxonomy($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'; - - $terms = array_map('intval', $terms); - - $taxonomies = "'" . implode("', '", $taxonomies) . "'"; - $terms = "'" . implode("', '", $terms) . "'"; - - $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 ($terms) ORDER BY tr.object_id $order"); - - if ( ! $object_ids ) - return array(); - - return $object_ids; -} - -/** - * 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 $wpdb; - - if ( empty($term) ) { - $error = new WP_Error('invalid_term', __('Empty Term')); - return $error; - } - - if ( ! is_taxonomy($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; - $term = (int) $term; - 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 = %s LIMIT 1", $taxonomy, $term) ); - wp_cache_add($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 $wpdb; - - if ( ! is_taxonomy($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 { - $field = 't.term_id'; - $value = (int) $value; - } - - $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); - - $term = sanitize_term($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 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, $taxonomy ) { - if ( ! is_taxonomy($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 string. A comma- or space-delimited string - * of term ids to exclude from the return array. If 'include' is non-empty, - * 'exclude' is ignored. - * - * exclude_tree - A 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 string. A comma- or space-delimited string - * of term ids to include in the return array. - * - * number - The maximum number of terms to return. Default is empty. - * - * 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. - * - * @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 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(); - - $single_taxonomy = false; - if ( !is_array($taxonomies) ) { - $single_taxonomy = true; - $taxonomies = array($taxonomies); - } - - foreach ( (array) $taxonomies as $taxonomy ) { - if ( ! is_taxonomy($taxonomy) ) { - $error = & new WP_Error('invalid_taxonomy', __('Invalid Taxonomy')); - return $error; - } - } - - $in_taxonomies = "'" . implode("', '", $taxonomies) . "'"; - - $defaults = array('orderby' => 'name', 'order' => 'ASC', - 'hide_empty' => true, 'exclude' => '', 'exclude_tree' => '', 'include' => '', - 'number' => '', 'fields' => 'all', 'slug' => '', 'parent' => '', - 'hierarchical' => true, 'child_of' => 0, 'get' => '', 'name__like' => '', - 'pad_counts' => false, 'offset' => '', 'search' => ''); - $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; - $args['pad_counts'] = false; - } - extract($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 ) - $orderby = 't.term_group'; - elseif ( empty($_orderby) || 'id' == $_orderby ) - $orderby = 't.term_id'; - - $orderby = apply_filters( 'get_terms_orderby', $orderby, $args ); - - $where = ''; - $inclusions = ''; - if ( !empty($include) ) { - $exclude = ''; - $exclude_tree = ''; - $interms = preg_split('/[\s,]+/',$include); - if ( count($interms) ) { - foreach ( (array) $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 ) ) { - $excluded_trunks = preg_split('/[\s,]+/',$exclude_tree); - foreach( (array) $excluded_trunks as $extrunk ) { - $excluded_children = (array) get_terms($taxonomies[0], array('child_of' => intval($extrunk), 'fields' => 'ids')); - $excluded_children[] = $extrunk; - foreach( (array) $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) ) { - $exterms = preg_split('/[\s,]+/',$exclude); - if ( count($exterms) ) { - foreach ( (array) $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) ) - $where .= " AND t.name LIKE '{$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 ) - $limit = 'LIMIT ' . $offset . ',' . $number; - else - $limit = 'LIMIT ' . $number; - - } else - $limit = ''; - - if ( !empty($search) ) { - $search = like_escape($search); - $where .= " AND (t.name LIKE '%$search%')"; - } - - $selects = array(); - if ( 'all' == $fields ) - $selects = array('t.*', 'tt.*'); - else if ( 'ids' == $fields ) - $selects = array('t.term_id', 'tt.parent', 'tt.count'); - else if ( 'names' == $fields ) - $selects = array('t.term_id', 'tt.parent', 'tt.count', 't.name'); - $select_this = implode(', ', apply_filters( 'get_terms_fields', $selects, $args )); - - $query = "SELECT $select_this FROM $wpdb->terms AS t INNER JOIN $wpdb->term_taxonomy AS tt ON t.term_id = tt.term_id WHERE tt.taxonomy IN ($in_taxonomies) $where ORDER BY $orderby $order $limit"; - - $terms = $wpdb->get_results($query); - if ( 'all' == $fields ) { - update_term_cache($terms); - } - - if ( empty($terms) ) { - wp_cache_add( $cache_key, array(), 'terms' ); - $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 ( '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' ); - - $terms = apply_filters('get_terms', $terms, $taxonomies, $args); - return $terms; -} - -/** - * Check if Term exists. - * - * Returns the index of a defined term, or 0 (false) if the term doesn't exist. - * - * @package WordPress - * @subpackage Taxonomy - * @since 2.3.0 - * - * @uses $wpdb - * - * @param int|string $term The term to check - * @param string $taxonomy The taxonomy name to use - * @param int $parent ID of parent term under which to confine the exists search. - * @return mixed Get the term id or Term Object, if exists. - */ -function is_term($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) ); -} - -/** - * Sanitize Term all fields. - * - * Relys 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. - * - * @package WordPress - * @subpackage Taxonomy - * @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') { - - if ( 'raw' == $context ) - return $term; - - $fields = array('term_id', 'name', 'description', 'slug', 'count', 'parent', 'term_group'); - - $do_object = false; - if ( is_object($term) ) - $do_object = true; - - $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. - * - * @package WordPress - * @subpackage Taxonomy - * @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) { - if ( 'parent' == $field || 'term_id' == $field || 'count' == $field || 'term_group' == $field ) { - $value = (int) $value; - if ( $value < 0 ) - $value = 0; - } - - if ( 'raw' == $context ) - return $value; - - if ( 'edit' == $context ) { - $value = apply_filters("edit_term_$field", $value, $term_id, $taxonomy); - $value = apply_filters("edit_${taxonomy}_$field", $value, $term_id); - if ( 'description' == $field ) - $value = format_to_edit($value); - else - $value = esc_attr($value); - } else if ( 'db' == $context ) { - $value = apply_filters("pre_term_$field", $value, $taxonomy); - $value = apply_filters("pre_${taxonomy}_$field", $value); - // Back compat filters - if ( 'slug' == $field ) - $value = apply_filters('pre_category_nicename', $value); - - } else if ( 'rss' == $context ) { - $value = apply_filters("term_${field}_rss", $value, $taxonomy); - $value = apply_filters("${taxonomy}_${field}_rss", $value); - } else { - // Use display filters by default. - $value = apply_filters("term_$field", $value, $term_id, $taxonomy, $context); - $value = apply_filters("${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 'ignore_empty' which can be 'ignore_empty=true' - * or array('ignore_empty' => true);. - * - * @package WordPress - * @subpackage Taxonomy - * @since 2.3.0 - * - * @uses $wpdb - * @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 - * @return int How many terms are in $taxonomy - */ -function wp_count_terms( $taxonomy, $args = array() ) { - global $wpdb; - - $defaults = array('ignore_empty' => false); - $args = wp_parse_args($args, $defaults); - extract($args, EXTR_SKIP); - - $where = ''; - if ( $ignore_empty ) - $where = 'AND count > 0'; - - return $wpdb->get_var( $wpdb->prepare("SELECT COUNT(*) FROM $wpdb->term_taxonomy WHERE taxonomy = %s $where", $taxonomy) ); -} - -/** - * Will unlink the term from the taxonomy. - * - * Will remove the term's relationship to the taxonomy, not the term or taxonomy - * itself. The term and taxonomy will still exist. Will require the term's - * object ID to perform the operation. - * - * @package WordPress - * @subpackage Taxonomy - * @since 2.3.0 - * @uses $wpdb - * - * @param int $object_id The term Object Id that refers to the term - * @param string|array $taxonomy List of Taxonomy Names or single Taxonomy name. - */ -function wp_delete_object_term_relationships( $object_id, $taxonomies ) { - global $wpdb; - - $object_id = (int) $object_id; - - if ( !is_array($taxonomies) ) - $taxonomies = array($taxonomies); - - foreach ( (array) $taxonomies as $taxonomy ) { - $tt_ids = wp_get_object_terms($object_id, $taxonomy, 'fields=tt_ids'); - $in_tt_ids = "'" . implode("', '", $tt_ids) . "'"; - $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->term_relationships WHERE object_id = %d AND term_taxonomy_id IN ($in_tt_ids)", $object_id) ); - wp_update_term_count($tt_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 - * @package WordPress - * @subpackage Taxonomy - * @since 2.3.0 - * - * @uses $wpdb - * @uses do_action() Calls both 'delete_term' and 'delete_$taxonomy' action - * hooks, passing term object, term id. 'delete_term' gets an additional - * parameter with the $taxonomy parameter. - * - * @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 ( ! $ids = is_term($term, $taxonomy) ) - return false; - if ( is_wp_error( $ids ) ) - return $ids; - - $tt_id = $ids['term_taxonomy_id']; - - $defaults = array(); - $args = wp_parse_args($args, $defaults); - extract($args, EXTR_SKIP); - - if ( isset($default) ) { - $default = (int) $default; - if ( ! is_term($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; - - $wpdb->update( $wpdb->term_taxonomy, compact( 'parent' ), array( 'parent' => $term_obj->term_id) + compact( 'taxonomy' ) ); - } - - $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); - } - - $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->term_taxonomy WHERE term_taxonomy_id = %d", $tt_id ) ); - - // Delete the term if no taxonomies use it. - if ( !$wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->term_taxonomy WHERE term_id = %d", $term) ) ) - $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->terms WHERE term_id = %d", $term) ); - - clean_term_cache($term, $taxonomy); - - do_action('delete_term', $term, $tt_id, $taxonomy); - do_action("delete_$taxonomy", $term, $tt_id); - - return true; -} - -/** - * 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 choosen 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. - * - * @package WordPress - * @subpackage Taxonomy - * @since 2.3.0 - * @uses $wpdb - * - * @param int|array $object_id The id 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 $taxonomy does not exist. - */ -function wp_get_object_terms($object_ids, $taxonomies, $args = array()) { - global $wpdb; - - if ( !is_array($taxonomies) ) - $taxonomies = array($taxonomies); - - foreach ( (array) $taxonomies as $taxonomy ) { - if ( ! is_taxonomy($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"; - - $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 ( '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 ) { - $terms = array_merge($terms, $wpdb->get_results($query)); - update_term_cache($terms); - } else if ( 'ids' == $fields || 'names' == $fields ) { - $terms = array_merge($terms, $wpdb->get_col($query)); - } 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"); - } - - if ( ! $terms ) - $terms = array(); - - return apply_filters('wp_get_object_terms', $terms, $object_ids, $taxonomies, $args); -} - -/** - * Adds a new term to the database. Optionally marks it as an alias of an existing term. - * - * Error handling is assigned for the nonexistance of the $taxonomy and $term - * parameters before inserting. If both the term id and taxonomy exist - * previously, then an array will be returned that contains the term id and the - * contents of what is returned. The keys of the array are 'term_id' and - * 'term_taxonomy_id' containing numeric values. - * - * It is assumed that the term does not yet exist or the above will apply. The - * term will be first added to the term table and then related to the taxonomy - * if everything is well. If everything is correct, then several actions will be - * run prior to a filter and then several actions will be run after the filter - * is run. - * - * The arguments decide how the term is handled based on the $args parameter. - * The following is a list of the available overrides and the defaults. - * - * 'alias_of'. There is no default, but if added, expected is the slug that the - * term will be an alias of. Expected to be a string. - * - * 'description'. There is no default. If exists, will be added to the database - * along with the term. Expected to be a string. - * - * 'parent'. Expected to be numeric and default is 0 (zero). Will assign value - * of 'parent' to the term. - * - * 'slug'. Expected to be a string. There is no default. - * - * If 'slug' argument exists then the slug will be checked to see if it is not - * a valid term. If that check succeeds (it is not a valid term), then it is - * added and the term id is given. If it fails, then a check is made to whether - * the taxonomy is hierarchical and the parent argument is not empty. If the - * second check succeeds, the term will be inserted and the term id will be - * given. - * - * @package WordPress - * @subpackage Taxonomy - * @since 2.3.0 - * @uses $wpdb - * - * @uses do_action() Calls 'create_term' hook with the term id and taxonomy id as parameters. - * @uses do_action() Calls 'create_$taxonomy' hook with term id and taxonomy id as parameters. - * @uses apply_filters() Calls 'term_id_filter' hook with term id and taxonomy id as parameters. - * @uses do_action() Calls 'created_term' hook with the term id and taxonomy id as parameters. - * @uses do_action() Calls 'created_$taxonomy' hook with term id and taxonomy id as parameters. - * - * @param int|string $term The term to add or update. - * @param string $taxonomy The taxonomy to which to add the term - * @param array|string $args Change the values of the inserted term - * @return array|WP_Error The Term ID and Term Taxonomy ID - */ -function wp_insert_term( $term, $taxonomy, $args = array() ) { - global $wpdb; - - if ( ! is_taxonomy($taxonomy) ) - return new WP_Error('invalid_taxonomy', __('Invalid taxonomy')); - - 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) - $name = stripslashes($name); - $description = stripslashes($description); - - if ( empty($slug) ) - $slug = sanitize_title($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; - $wpdb->update($wpdb->terms, compact('term_group'), array('term_id' => $alias->term_id) ); - } - } - - if ( ! $term_id = is_term($slug) ) { - 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) $wpdb->insert_id; - } else if ( is_taxonomy_hierarchical($taxonomy) && !empty($parent) ) { - // If the taxonomy supports hierarchy and the term has a parent, make the slug unique - // by incorporating parent slugs. - $slug = wp_unique_term_slug($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) $wpdb->insert_id; - } - - if ( empty($slug) ) { - $slug = sanitize_title($slug, $term_id); - $wpdb->update( $wpdb->terms, compact( 'slug' ), compact( 'term_id' ) ); - } - - $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; - - do_action("create_term", $term_id, $tt_id); - do_action("create_$taxonomy", $term_id, $tt_id); - - $term_id = apply_filters('term_id_filter', $term_id, $tt_id); - - clean_term_cache($term_id, $taxonomy); - - do_action("created_term", $term_id, $tt_id); - do_action("created_$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. - * - * @package WordPress - * @subpackage Taxonomy - * @since 2.3.0 - * @uses $wpdb - * - * @param int $object_id The object to relate to. - * @param array|int|string $term 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) $object_id; - - if ( ! is_taxonomy($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')); - - $tt_ids = array(); - $term_ids = array(); - - foreach ( (array) $terms as $term) { - if ( !strlen(trim($term)) ) - continue; - - if ( !$term_info = is_term($term, $taxonomy) ) - $term_info = wp_insert_term($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; - $wpdb->insert( $wpdb->term_relationships, array( 'object_id' => $object_id, 'term_taxonomy_id' => $tt_id ) ); - } - - wp_update_term_count($tt_ids, $taxonomy); - - if ( ! $append ) { - $delete_terms = array_diff($old_tt_ids, $tt_ids); - if ( $delete_terms ) { - $in_delete_terms = "'" . implode("', '", $delete_terms) . "'"; - $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->term_relationships WHERE object_id = %d AND term_taxonomy_id IN ($in_delete_terms)", $object_id) ); - wp_update_term_count($delete_terms, $taxonomy); - } - } - - $t = get_taxonomy($taxonomy); - if ( ! $append && isset($t->sort) && $t->sort ) { - $values = array(); - $term_order = 0; - $final_tt_ids = wp_get_object_terms($object_id, $taxonomy, '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 ) - $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)"); - } - - do_action('set_object_terms', $object_id, $terms, $tt_ids, $taxonomy, $append); - return $tt_ids; -} - -/** - * 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 - * heirarchical 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 truely unique. - * - * The only purpose for $term is for appending a parent, if one exists. - * - * @package WordPress - * @subpackage Taxonomy - * @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 $wpdb; - - // If the taxonomy supports hierarchy and the term has a parent, make the slug unique - // by incorporating parent slugs. - if ( is_taxonomy_hierarchical($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 .= '-' . $parent_term->slug; - if ( empty($parent_term->parent) ) - break; - $the_parent = $parent_term->parent; - } - } - - // If we didn't get a unique slug, try appending a number to make it unique. - if ( !empty($args['term_id']) ) - $query = $wpdb->prepare( "SELECT slug FROM $wpdb->terms WHERE slug = %s AND term_id != %d", $slug, $args['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. - * - * @package WordPress - * @subpackage Taxonomy - * @since 2.3.0 - * - * @uses $wpdb - * @uses do_action() Will call both 'edit_term' and 'edit_$taxonomy' twice. - * @uses apply_filters() Will call the 'term_id_filter' filter and pass the term - * id and taxonomy id. - * - * @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 $wpdb; - - if ( ! is_taxonomy($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. - $term = add_magic_quotes($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) - $name = stripslashes($name); - $description = stripslashes($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; - $wpdb->update( $wpdb->terms, compact('term_group'), array( 'term_id' => $alias->term_id ) ); - } - } - - // 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)); - } - - $wpdb->update($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' ) ); - } - - $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) ); - - $wpdb->update( $wpdb->term_taxonomy, compact( 'term_id', 'taxonomy', 'description', 'parent' ), array( 'term_taxonomy_id' => $tt_id ) ); - - do_action("edit_term", $term_id, $tt_id); - do_action("edit_$taxonomy", $term_id, $tt_id); - - $term_id = apply_filters('term_id_filter', $term_id, $tt_id); - - clean_term_cache($term_id, $taxonomy); - - do_action("edited_term", $term_id, $tt_id); - do_action("edited_$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 applyed, 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. - * - * @package WordPress - * @subpackage Taxonomy - * @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); - } else { - // Default count updater - foreach ( (array) $terms as $term) { - $count = $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->term_relationships WHERE term_taxonomy_id = %d", $term) ); - $wpdb->update( $wpdb->term_taxonomy, compact( 'count' ), array( 'term_taxonomy_id' => $term ) ); - } - - } - - clean_term_cache($terms); - - 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. - * - * @package WordPress - * @subpackage Taxonomy - * @since 2.3.0 - * - * @see get_object_taxonomies() for more on $object_type - * @uses do_action() Will call action hook named, 'clean_object_term_cache' after completion. - * Passes, function params in same order. - * - * @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); - - foreach ( $object_ids as $id ) - foreach ( get_object_taxonomies($object_type) as $taxonomy ) - wp_cache_delete($id, "{$taxonomy}_relationships"); - - do_action('clean_object_term_cache', $object_ids, $object_type); -} - - -/** - * Will remove all of the term ids from the cache. - * - * @package WordPress - * @subpackage Taxonomy - * @since 2.3.0 - * @uses $wpdb - * - * @param int|array $ids Single or list of Term IDs - * @param string $taxonomy Can be empty and will assume tt_ids, else will use for context. - */ -function clean_term_cache($ids, $taxonomy = '') { - global $wpdb; - static $cleaned = array(); - - if ( !is_array($ids) ) - $ids = array($ids); - - $taxonomies = array(); - // If no taxonomy, assume tt_ids. - if ( empty($taxonomy) ) { - $tt_ids = implode(', ', $ids); - $terms = $wpdb->get_results("SELECT term_id, taxonomy FROM $wpdb->term_taxonomy WHERE term_taxonomy_id IN ($tt_ids)"); - foreach ( (array) $terms as $term ) { - $taxonomies[] = $term->taxonomy; - wp_cache_delete($term->term_id, $term->taxonomy); - } - $taxonomies = array_unique($taxonomies); - } else { - foreach ( $ids as $id ) { - wp_cache_delete($id, $taxonomy); - } - $taxonomies = array($taxonomy); - } - - foreach ( $taxonomies as $taxonomy ) { - if ( isset($cleaned[$taxonomy]) ) - continue; - $cleaned[$taxonomy] = true; - wp_cache_delete('all_ids', $taxonomy); - wp_cache_delete('get', $taxonomy); - delete_option("{$taxonomy}_children"); - } - - wp_cache_set('last_changed', time(), 'terms'); - - do_action('clean_term_cache', $ids, $taxonomy); -} - - -/** - * Retrieves the taxonomy relationship to the term object id. - * - * @package WordPress - * @subpackage Taxonomy - * @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. - * - * @package WordPress - * @subpackage Taxonomy - * @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, '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 => $terms ) { - wp_cache_set($id, $terms, "{$taxonomy}_relationships"); - } - } -} - - -/** - * Updates Terms to Taxonomy in cache. - * - * @package WordPress - * @subpackage Taxonomy - * @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, $term_taxonomy); - } -} - -// -// Private -// - - -/** - * Retrieves children of taxonomy as Term IDs. - * - * @package WordPress - * @subpackage Taxonomy - * @access private - * @since 2.3.0 - * - * @uses update_option() Stores all of the children in "$taxonomy_children" - * option. That is the name of the taxonomy, immediately followed by '_children'. - * - * @param string $taxonomy Taxonomy Name - * @return array Empty if $taxonomy isn't hierarachical or returns children as Term IDs. - */ -function _get_term_hierarchy($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, 'get=all'); - foreach ( $terms as $term ) { - if ( $term->parent > 0 ) - $children[$term->parent][] = $term->term_id; - } - update_option("{$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. - * - * @package WordPress - * @subpackage Taxonomy - * @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. - * - * @package WordPress - * @subpackage Taxonomy - * @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 - $results = $wpdb->get_results("SELECT object_id, term_taxonomy_id FROM $wpdb->term_relationships INNER JOIN $wpdb->posts ON object_id = ID WHERE term_taxonomy_id IN (".join(',', array_keys($term_ids)).") AND post_type = 'post' 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 ( $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 posts. - * - * Private function for the default callback for post_tag and category - * taxonomies. - * - * @package WordPress - * @subpackage Taxonomy - * @access private - * @since 2.3.0 - * @uses $wpdb - * - * @param array $terms List of Term taxonomy IDs - */ -function _update_post_term_count( $terms ) { - global $wpdb; - - foreach ( (array) $terms as $term ) { - $count = $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 = 'post' AND term_taxonomy_id = %d", $term ) ); - $wpdb->update( $wpdb->term_taxonomy, compact( 'count' ), array( 'term_taxonomy_id' => $term ) ); - } -} - - -/** - * Generates a permalink for a taxonomy term archive. - * - * @since 2.5.0 - * - * @param object|int|string $term - * @param string $taxonomy - * @return string HTML link to taxonomy term archive - */ -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_wp_error( $term ) ) - return $term; - - // use legacy functions for core taxonomies until they are fully plugged in - if ( $taxonomy == 'category' ) - return get_category_link((int) $term->term_id); - if ( $taxonomy == 'post_tag' ) - return get_tag_link((int) $term->term_id); - - $termlink = $wp_rewrite->get_extra_permastruct($taxonomy); - - $slug = $term->slug; - - if ( empty($termlink) ) { - $file = get_option('home') . '/'; - $t = get_taxonomy($taxonomy); - if ( $t->query_var ) - $termlink = "$file?$t->query_var=$slug"; - else - $termlink = "$file?taxonomy=$taxonomy&term=$slug"; - } else { - $termlink = str_replace("%$taxonomy%", $slug, $termlink); - $termlink = get_option('home') . user_trailingslashit($termlink, 'category'); - } - 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. - * - * @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' => '', - ); - - $r = wp_parse_args( $args, $defaults ); - extract( $r, EXTR_SKIP ); - - echo $before . join($sep, get_the_taxonomies($post)) . $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 $post Optional. Post ID or will use Global Post ID (in loop). - * @return array - */ -function get_the_taxonomies($post = 0) { - if ( is_int($post) ) - $post =& get_post($post); - elseif ( !is_object($post) ) - $post =& $GLOBALS['post']; - - $taxonomies = array(); - - if ( !$post ) - return $taxonomies; - - $template = apply_filters('taxonomy_template', '%s: %l.'); - - foreach ( get_object_taxonomies($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, $taxonomy); - if ( empty($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 $post Optional. Post ID - * @return array - */ -function get_post_taxonomies($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 ( empty( $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; -} - -?> + true, 'update_count_callback' => '_update_post_term_count', 'label' => __('Categories'), 'query_var' => false, 'rewrite' => false) ) ; + register_taxonomy( 'post_tag', 'post', array('hierarchical' => false, 'update_count_callback' => '_update_post_term_count', 'label' => __('Post Tags'), 'query_var' => false, 'rewrite' => false) ) ; + register_taxonomy( 'link_category', 'link', array('hierarchical' => false, 'label' => __('Categories'), 'query_var' => false, 'rewrite' => false) ) ; +} +add_action( 'init', 'create_initial_taxonomies', 0 ); // highest priority + +/** + * 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. + * + * Should + * result in Array('category', 'post_tag') + * + * @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) + * @return array The names of all taxonomy of $object_type. + */ +function get_object_taxonomies($object) { + 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 $taxonomy ) { + if ( array_intersect($object, (array) $taxonomy->object_type) ) + $taxonomies[] = $taxonomy->name; + } + + 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 is_taxonomy() 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 $wp_taxonomies; + + if ( ! is_taxonomy($taxonomy) ) + return false; + + return $wp_taxonomies[$taxonomy]; +} + +/** + * Checks that the taxonomy name exists. + * + * @package WordPress + * @subpackage Taxonomy + * @since 2.3.0 + * + * @uses $wp_taxonomies + * + * @param string $taxonomy Name of taxonomy object + * @return bool Whether the taxonomy exists or not. + */ +function is_taxonomy( $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 is_taxonomy() 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 ( ! is_taxonomy($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 is_taxonomy() to check + * whether taxonomy exists. + * + * Optional $args contents: + * + * hierarachical - has some defined purpose at other parts of the API and is a + * boolean value. + * + * update_count_callback - works much like a hook, in that it will be called + * when the count is updated. + * + * rewrite - false to prevent rewrite, or array('slug'=>$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. + * + * @package WordPress + * @subpackage Taxonomy + * @since 2.3.0 + * @uses $wp_taxonomies Inserts new taxonomy object into the list + * @uses $wp_rewrite Adds rewrite tags and permastructs + * @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. + */ +function register_taxonomy( $taxonomy, $object_type, $args = array() ) { + global $wp_taxonomies, $wp_rewrite, $wp; + + if (!is_array($wp_taxonomies)) + $wp_taxonomies = array(); + + $defaults = array('hierarchical' => false, 'update_count_callback' => '', 'rewrite' => true, 'query_var' => true); + $args = wp_parse_args($args, $defaults); + + if ( false !== $args['query_var'] && !empty($wp) ) { + if ( true === $args['query_var'] ) + $args['query_var'] = $taxonomy; + $args['query_var'] = sanitize_title_with_dashes($args['query_var']); + $wp->add_query_var($args['query_var']); + } + + if ( false !== $args['rewrite'] && !empty($wp_rewrite) ) { + if ( !is_array($args['rewrite']) ) + $args['rewrite'] = array(); + if ( !isset($args['rewrite']['slug']) ) + $args['rewrite']['slug'] = sanitize_title_with_dashes($taxonomy); + $wp_rewrite->add_rewrite_tag("%$taxonomy%", '([^/]+)', $args['query_var'] ? "{$args['query_var']}=" : "taxonomy=$taxonomy&term=$term"); + $wp_rewrite->add_permastruct($taxonomy, "{$args['rewrite']['slug']}/%$taxonomy%"); + } + + $args['name'] = $taxonomy; + $args['object_type'] = $object_type; + $wp_taxonomies[$taxonomy] = (object) $args; +} + +// +// 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 string|array $terms String of term or array of string values 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( $terms, $taxonomies, $args = array() ) { + global $wpdb; + + if ( !is_array( $terms) ) + $terms = array($terms); + + if ( !is_array($taxonomies) ) + $taxonomies = array($taxonomies); + + foreach ( (array) $taxonomies as $taxonomy ) { + if ( ! is_taxonomy($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'; + + $terms = array_map('intval', $terms); + + $taxonomies = "'" . implode("', '", $taxonomies) . "'"; + $terms = "'" . implode("', '", $terms) . "'"; + + $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 ($terms) ORDER BY tr.object_id $order"); + + if ( ! $object_ids ) + return array(); + + return $object_ids; +} + +/** + * 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 $error; + } + + if ( ! is_taxonomy($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; + $term = (int) $term; + 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 = %s 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 $wpdb; + + if ( ! is_taxonomy($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 { + $field = 't.term_id'; + $value = (int) $value; + } + + $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); + + $term = sanitize_term($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 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, $taxonomy ) { + if ( ! is_taxonomy($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 string. A comma- or space-delimited string + * of term ids to exclude from the return array. If 'include' is non-empty, + * 'exclude' is ignored. + * + * exclude_tree - A 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 string. A comma- or space-delimited string + * of term ids to include in the return array. + * + * number - The maximum number of terms to return. Default is empty. + * + * 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. + * + * @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 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(); + + $single_taxonomy = false; + if ( !is_array($taxonomies) ) { + $single_taxonomy = true; + $taxonomies = array($taxonomies); + } + + foreach ( (array) $taxonomies as $taxonomy ) { + if ( ! is_taxonomy($taxonomy) ) { + $error = & new WP_Error('invalid_taxonomy', __('Invalid Taxonomy')); + return $error; + } + } + + $in_taxonomies = "'" . implode("', '", $taxonomies) . "'"; + + $defaults = array('orderby' => 'name', 'order' => 'ASC', + 'hide_empty' => true, 'exclude' => '', 'exclude_tree' => '', 'include' => '', + 'number' => '', 'fields' => 'all', 'slug' => '', 'parent' => '', + 'hierarchical' => true, 'child_of' => 0, 'get' => '', 'name__like' => '', + 'pad_counts' => false, 'offset' => '', 'search' => ''); + $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; + $args['pad_counts'] = false; + } + extract($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 ) + $orderby = 't.term_group'; + elseif ( empty($_orderby) || 'id' == $_orderby ) + $orderby = 't.term_id'; + + $orderby = apply_filters( 'get_terms_orderby', $orderby, $args ); + + $where = ''; + $inclusions = ''; + if ( !empty($include) ) { + $exclude = ''; + $exclude_tree = ''; + $interms = preg_split('/[\s,]+/',$include); + if ( count($interms) ) { + foreach ( (array) $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 ) ) { + $excluded_trunks = preg_split('/[\s,]+/',$exclude_tree); + foreach( (array) $excluded_trunks as $extrunk ) { + $excluded_children = (array) get_terms($taxonomies[0], array('child_of' => intval($extrunk), 'fields' => 'ids')); + $excluded_children[] = $extrunk; + foreach( (array) $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) ) { + $exterms = preg_split('/[\s,]+/',$exclude); + if ( count($exterms) ) { + foreach ( (array) $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) ) + $where .= " AND t.name LIKE '{$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 ) + $limit = 'LIMIT ' . $offset . ',' . $number; + else + $limit = 'LIMIT ' . $number; + + } else + $limit = ''; + + if ( !empty($search) ) { + $search = like_escape($search); + $where .= " AND (t.name LIKE '%$search%')"; + } + + $selects = array(); + if ( 'all' == $fields ) + $selects = array('t.*', 'tt.*'); + else if ( 'ids' == $fields ) + $selects = array('t.term_id', 'tt.parent', 'tt.count'); + else if ( 'names' == $fields ) + $selects = array('t.term_id', 'tt.parent', 'tt.count', 't.name'); + $select_this = implode(', ', apply_filters( 'get_terms_fields', $selects, $args )); + + $query = "SELECT $select_this FROM $wpdb->terms AS t INNER JOIN $wpdb->term_taxonomy AS tt ON t.term_id = tt.term_id WHERE tt.taxonomy IN ($in_taxonomies) $where ORDER BY $orderby $order $limit"; + + $terms = $wpdb->get_results($query); + if ( 'all' == $fields ) { + update_term_cache($terms); + } + + if ( empty($terms) ) { + wp_cache_add( $cache_key, array(), 'terms' ); + $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 ( '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' ); + + $terms = apply_filters('get_terms', $terms, $taxonomies, $args); + return $terms; +} + +/** + * Check if Term exists. + * + * Returns the index of a defined term, or 0 (false) if the term doesn't exist. + * + * @package WordPress + * @subpackage Taxonomy + * @since 2.3.0 + * + * @uses $wpdb + * + * @param int|string $term The term to check + * @param string $taxonomy The taxonomy name to use + * @param int $parent ID of parent term under which to confine the exists search. + * @return mixed Get the term id or Term Object, if exists. + */ +function is_term($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) ); +} + +/** + * Sanitize Term all fields. + * + * Relys 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. + * + * @package WordPress + * @subpackage Taxonomy + * @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') { + + if ( 'raw' == $context ) + return $term; + + $fields = array('term_id', 'name', 'description', 'slug', 'count', 'parent', 'term_group'); + + $do_object = false; + if ( is_object($term) ) + $do_object = true; + + $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. + * + * @package WordPress + * @subpackage Taxonomy + * @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) { + if ( 'parent' == $field || 'term_id' == $field || 'count' == $field || 'term_group' == $field ) { + $value = (int) $value; + if ( $value < 0 ) + $value = 0; + } + + if ( 'raw' == $context ) + return $value; + + if ( 'edit' == $context ) { + $value = apply_filters("edit_term_$field", $value, $term_id, $taxonomy); + $value = apply_filters("edit_${taxonomy}_$field", $value, $term_id); + if ( 'description' == $field ) + $value = format_to_edit($value); + else + $value = esc_attr($value); + } else if ( 'db' == $context ) { + $value = apply_filters("pre_term_$field", $value, $taxonomy); + $value = apply_filters("pre_${taxonomy}_$field", $value); + // Back compat filters + if ( 'slug' == $field ) + $value = apply_filters('pre_category_nicename', $value); + + } else if ( 'rss' == $context ) { + $value = apply_filters("term_${field}_rss", $value, $taxonomy); + $value = apply_filters("${taxonomy}_${field}_rss", $value); + } else { + // Use display filters by default. + $value = apply_filters("term_$field", $value, $term_id, $taxonomy, $context); + $value = apply_filters("${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 'ignore_empty' which can be 'ignore_empty=true' + * or array('ignore_empty' => true);. + * + * @package WordPress + * @subpackage Taxonomy + * @since 2.3.0 + * + * @uses $wpdb + * @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 + * @return int How many terms are in $taxonomy + */ +function wp_count_terms( $taxonomy, $args = array() ) { + global $wpdb; + + $defaults = array('ignore_empty' => false); + $args = wp_parse_args($args, $defaults); + extract($args, EXTR_SKIP); + + $where = ''; + if ( $ignore_empty ) + $where = 'AND count > 0'; + + return $wpdb->get_var( $wpdb->prepare("SELECT COUNT(*) FROM $wpdb->term_taxonomy WHERE taxonomy = %s $where", $taxonomy) ); +} + +/** + * Will unlink the term from the taxonomy. + * + * Will remove the term's relationship to the taxonomy, not the term or taxonomy + * itself. The term and taxonomy will still exist. Will require the term's + * object ID to perform the operation. + * + * @package WordPress + * @subpackage Taxonomy + * @since 2.3.0 + * @uses $wpdb + * + * @param int $object_id The term Object Id that refers to the term + * @param string|array $taxonomy List of Taxonomy Names or single Taxonomy name. + */ +function wp_delete_object_term_relationships( $object_id, $taxonomies ) { + global $wpdb; + + $object_id = (int) $object_id; + + if ( !is_array($taxonomies) ) + $taxonomies = array($taxonomies); + + foreach ( (array) $taxonomies as $taxonomy ) { + $tt_ids = wp_get_object_terms($object_id, $taxonomy, 'fields=tt_ids'); + $in_tt_ids = "'" . implode("', '", $tt_ids) . "'"; + do_action( 'delete_term_relationships', $object_id, $tt_ids ); + $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->term_relationships WHERE object_id = %d AND term_taxonomy_id IN ($in_tt_ids)", $object_id) ); + do_action( 'deleted_term_relationships', $object_id, $tt_ids ); + wp_update_term_count($tt_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 + * @package WordPress + * @subpackage Taxonomy + * @since 2.3.0 + * + * @uses $wpdb + * @uses do_action() Calls both 'delete_term' and 'delete_$taxonomy' action + * hooks, passing term object, term id. 'delete_term' gets an additional + * parameter with the $taxonomy parameter. + * + * @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 ( ! $ids = is_term($term, $taxonomy) ) + return false; + if ( is_wp_error( $ids ) ) + return $ids; + + $tt_id = $ids['term_taxonomy_id']; + + $defaults = array(); + $args = wp_parse_args($args, $defaults); + extract($args, EXTR_SKIP); + + if ( isset($default) ) { + $default = (int) $default; + if ( ! is_term($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 ); + do_action( 'edit_term_taxonomies', $edit_tt_ids ); + $wpdb->update( $wpdb->term_taxonomy, compact( 'parent' ), array( 'parent' => $term_obj->term_id) + compact( 'taxonomy' ) ); + 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); + } + + do_action( 'delete_term_taxonomy', $tt_id ); + $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->term_taxonomy WHERE term_taxonomy_id = %d", $tt_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->query( $wpdb->prepare( "DELETE FROM $wpdb->terms WHERE term_id = %d", $term) ); + + clean_term_cache($term, $taxonomy); + + do_action('delete_term', $term, $tt_id, $taxonomy); + do_action("delete_$taxonomy", $term, $tt_id); + + return true; +} + +/** + * 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 choosen 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. + * + * @package WordPress + * @subpackage Taxonomy + * @since 2.3.0 + * @uses $wpdb + * + * @param int|array $object_id The id 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 $taxonomy does not exist. + */ +function wp_get_object_terms($object_ids, $taxonomies, $args = array()) { + global $wpdb; + + if ( !is_array($taxonomies) ) + $taxonomies = array($taxonomies); + + foreach ( (array) $taxonomies as $taxonomy ) { + if ( ! is_taxonomy($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"; + + $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 ( '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 ) { + $terms = array_merge($terms, $wpdb->get_results($query)); + update_term_cache($terms); + } else if ( 'ids' == $fields || 'names' == $fields ) { + $terms = array_merge($terms, $wpdb->get_col($query)); + } 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"); + } + + if ( ! $terms ) + $terms = array(); + + return apply_filters('wp_get_object_terms', $terms, $object_ids, $taxonomies, $args); +} + +/** + * Adds a new term to the database. Optionally marks it as an alias of an existing term. + * + * Error handling is assigned for the nonexistance of the $taxonomy and $term + * parameters before inserting. If both the term id and taxonomy exist + * previously, then an array will be returned that contains the term id and the + * contents of what is returned. The keys of the array are 'term_id' and + * 'term_taxonomy_id' containing numeric values. + * + * It is assumed that the term does not yet exist or the above will apply. The + * term will be first added to the term table and then related to the taxonomy + * if everything is well. If everything is correct, then several actions will be + * run prior to a filter and then several actions will be run after the filter + * is run. + * + * The arguments decide how the term is handled based on the $args parameter. + * The following is a list of the available overrides and the defaults. + * + * 'alias_of'. There is no default, but if added, expected is the slug that the + * term will be an alias of. Expected to be a string. + * + * 'description'. There is no default. If exists, will be added to the database + * along with the term. Expected to be a string. + * + * 'parent'. Expected to be numeric and default is 0 (zero). Will assign value + * of 'parent' to the term. + * + * 'slug'. Expected to be a string. There is no default. + * + * If 'slug' argument exists then the slug will be checked to see if it is not + * a valid term. If that check succeeds (it is not a valid term), then it is + * added and the term id is given. If it fails, then a check is made to whether + * the taxonomy is hierarchical and the parent argument is not empty. If the + * second check succeeds, the term will be inserted and the term id will be + * given. + * + * @package WordPress + * @subpackage Taxonomy + * @since 2.3.0 + * @uses $wpdb + * + * @uses do_action() Calls 'create_term' hook with the term id and taxonomy id as parameters. + * @uses do_action() Calls 'create_$taxonomy' hook with term id and taxonomy id as parameters. + * @uses apply_filters() Calls 'term_id_filter' hook with term id and taxonomy id as parameters. + * @uses do_action() Calls 'created_term' hook with the term id and taxonomy id as parameters. + * @uses do_action() Calls 'created_$taxonomy' hook with term id and taxonomy id as parameters. + * + * @param int|string $term The term to add or update. + * @param string $taxonomy The taxonomy to which to add the term + * @param array|string $args Change the values of the inserted term + * @return array|WP_Error The Term ID and Term Taxonomy ID + */ +function wp_insert_term( $term, $taxonomy, $args = array() ) { + global $wpdb; + + if ( ! is_taxonomy($taxonomy) ) + return new WP_Error('invalid_taxonomy', __('Invalid taxonomy')); + + 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) + $name = stripslashes($name); + $description = stripslashes($description); + + if ( empty($slug) ) + $slug = sanitize_title($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; + do_action( 'edit_terms', $alias->term_id ); + $wpdb->update($wpdb->terms, compact('term_group'), array('term_id' => $alias->term_id) ); + do_action( 'edited_terms', $alias->term_id ); + } + } + + if ( ! $term_id = is_term($slug) ) { + 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) $wpdb->insert_id; + } else if ( is_taxonomy_hierarchical($taxonomy) && !empty($parent) ) { + // If the taxonomy supports hierarchy and the term has a parent, make the slug unique + // by incorporating parent slugs. + $slug = wp_unique_term_slug($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) $wpdb->insert_id; + } + + if ( empty($slug) ) { + $slug = sanitize_title($slug, $term_id); + do_action( 'edit_terms', $term_id ); + $wpdb->update( $wpdb->terms, compact( 'slug' ), compact( 'term_id' ) ); + do_action( 'edited_terms', $term_id ); + } + + $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; + + do_action("create_term", $term_id, $tt_id, $taxonomy); + do_action("create_$taxonomy", $term_id, $tt_id); + + $term_id = apply_filters('term_id_filter', $term_id, $tt_id); + + clean_term_cache($term_id, $taxonomy); + + do_action("created_term", $term_id, $tt_id, $taxonomy); + do_action("created_$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. + * + * @package WordPress + * @subpackage Taxonomy + * @since 2.3.0 + * @uses $wpdb + * + * @param int $object_id The object to relate to. + * @param array|int|string $term 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) $object_id; + + if ( ! is_taxonomy($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')); + + $tt_ids = array(); + $term_ids = array(); + + foreach ( (array) $terms as $term) { + if ( !strlen(trim($term)) ) + continue; + + if ( !$term_info = is_term($term, $taxonomy) ) + $term_info = wp_insert_term($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; + do_action( 'add_term_relationship', $object_id, $tt_id ); + $wpdb->insert( $wpdb->term_relationships, array( 'object_id' => $object_id, 'term_taxonomy_id' => $tt_id ) ); + do_action( 'added_term_relationship', $object_id, $tt_id ); + } + + wp_update_term_count($tt_ids, $taxonomy); + + if ( ! $append ) { + $delete_terms = array_diff($old_tt_ids, $tt_ids); + if ( $delete_terms ) { + $in_delete_terms = "'" . implode("', '", $delete_terms) . "'"; + do_action( 'delete_term_relationships', $object_id, $delete_terms ); + $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->term_relationships WHERE object_id = %d AND term_taxonomy_id IN ($in_delete_terms)", $object_id) ); + do_action( 'deleted_term_relationships', $object_id, $delete_terms ); + wp_update_term_count($delete_terms, $taxonomy); + } + } + + $t = get_taxonomy($taxonomy); + if ( ! $append && isset($t->sort) && $t->sort ) { + $values = array(); + $term_order = 0; + $final_tt_ids = wp_get_object_terms($object_id, $taxonomy, '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 ) + $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)"); + } + + do_action('set_object_terms', $object_id, $terms, $tt_ids, $taxonomy, $append, $old_tt_ids); + return $tt_ids; +} + +/** + * 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 + * heirarchical 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 truely unique. + * + * The only purpose for $term is for appending a parent, if one exists. + * + * @package WordPress + * @subpackage Taxonomy + * @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 $wpdb; + + // If the taxonomy supports hierarchy and the term has a parent, make the slug unique + // by incorporating parent slugs. + if ( is_taxonomy_hierarchical($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 .= '-' . $parent_term->slug; + if ( empty($parent_term->parent) ) + break; + $the_parent = $parent_term->parent; + } + } + + // If we didn't get a unique slug, try appending a number to make it unique. + if ( !empty($args['term_id']) ) + $query = $wpdb->prepare( "SELECT slug FROM $wpdb->terms WHERE slug = %s AND term_id != %d", $slug, $args['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. + * + * @package WordPress + * @subpackage Taxonomy + * @since 2.3.0 + * + * @uses $wpdb + * @uses do_action() Will call both 'edit_term' and 'edit_$taxonomy' twice. + * @uses apply_filters() Will call the 'term_id_filter' filter and pass the term + * id and taxonomy id. + * + * @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 $wpdb; + + if ( ! is_taxonomy($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. + $term = add_magic_quotes($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) + $name = stripslashes($name); + $description = stripslashes($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; + do_action( 'edit_terms', $alias->term_id ); + $wpdb->update( $wpdb->terms, compact('term_group'), array( 'term_id' => $alias->term_id ) ); + do_action( 'edited_terms', $alias->term_id ); + } + } + + // 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)); + } + do_action( 'edit_terms', $term_id ); + $wpdb->update($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' ) ); + } + do_action( 'edited_terms', $term_id ); + + $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) ); + do_action( 'edit_term_taxonomy', $tt_id ); + $wpdb->update( $wpdb->term_taxonomy, compact( 'term_id', 'taxonomy', 'description', 'parent' ), array( 'term_taxonomy_id' => $tt_id ) ); + do_action( 'edited_term_taxonomy', $tt_id ); + + do_action("edit_term", $term_id, $tt_id, $taxonomy); + do_action("edit_$taxonomy", $term_id, $tt_id); + + $term_id = apply_filters('term_id_filter', $term_id, $tt_id); + + clean_term_cache($term_id, $taxonomy); + + do_action("edited_term", $term_id, $tt_id, $taxonomy); + do_action("edited_$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 applyed, 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. + * + * @package WordPress + * @subpackage Taxonomy + * @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); + } else { + // Default count updater + foreach ( (array) $terms as $term) { + $count = $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->term_relationships WHERE term_taxonomy_id = %d", $term) ); + do_action( 'edit_term_taxonomy', $term ); + $wpdb->update( $wpdb->term_taxonomy, compact( 'count' ), array( 'term_taxonomy_id' => $term ) ); + do_action( 'edited_term_taxonomy', $term ); + } + + } + + clean_term_cache($terms); + + 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. + * + * @package WordPress + * @subpackage Taxonomy + * @since 2.3.0 + * + * @see get_object_taxonomies() for more on $object_type + * @uses do_action() Will call action hook named, 'clean_object_term_cache' after completion. + * Passes, function params in same order. + * + * @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); + + foreach ( $object_ids as $id ) + foreach ( get_object_taxonomies($object_type) as $taxonomy ) + wp_cache_delete($id, "{$taxonomy}_relationships"); + + do_action('clean_object_term_cache', $object_ids, $object_type); +} + + +/** + * Will remove all of the term ids from the cache. + * + * @package WordPress + * @subpackage Taxonomy + * @since 2.3.0 + * @uses $wpdb + * + * @param int|array $ids Single or list of Term IDs + * @param string $taxonomy Can be empty and will assume tt_ids, else will use for context. + */ +function clean_term_cache($ids, $taxonomy = '') { + global $wpdb; + static $cleaned = array(); + + if ( !is_array($ids) ) + $ids = array($ids); + + $taxonomies = array(); + // If no taxonomy, assume tt_ids. + if ( empty($taxonomy) ) { + $tt_ids = implode(', ', $ids); + $terms = $wpdb->get_results("SELECT term_id, taxonomy FROM $wpdb->term_taxonomy WHERE term_taxonomy_id IN ($tt_ids)"); + foreach ( (array) $terms as $term ) { + $taxonomies[] = $term->taxonomy; + wp_cache_delete($term->term_id, $term->taxonomy); + } + $taxonomies = array_unique($taxonomies); + } else { + foreach ( $ids as $id ) { + wp_cache_delete($id, $taxonomy); + } + $taxonomies = array($taxonomy); + } + + foreach ( $taxonomies as $taxonomy ) { + if ( isset($cleaned[$taxonomy]) ) + continue; + $cleaned[$taxonomy] = true; + wp_cache_delete('all_ids', $taxonomy); + wp_cache_delete('get', $taxonomy); + delete_option("{$taxonomy}_children"); + } + + wp_cache_set('last_changed', time(), 'terms'); + + do_action('clean_term_cache', $ids, $taxonomy); +} + + +/** + * Retrieves the taxonomy relationship to the term object id. + * + * @package WordPress + * @subpackage Taxonomy + * @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. + * + * @package WordPress + * @subpackage Taxonomy + * @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, '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 => $terms ) { + wp_cache_set($id, $terms, "{$taxonomy}_relationships"); + } + } +} + + +/** + * Updates Terms to Taxonomy in cache. + * + * @package WordPress + * @subpackage Taxonomy + * @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, $term_taxonomy); + } +} + +// +// Private +// + + +/** + * Retrieves children of taxonomy as Term IDs. + * + * @package WordPress + * @subpackage Taxonomy + * @access private + * @since 2.3.0 + * + * @uses update_option() Stores all of the children in "$taxonomy_children" + * option. That is the name of the taxonomy, immediately followed by '_children'. + * + * @param string $taxonomy Taxonomy Name + * @return array Empty if $taxonomy isn't hierarachical or returns children as Term IDs. + */ +function _get_term_hierarchy($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, 'get=all'); + foreach ( $terms as $term ) { + if ( $term->parent > 0 ) + $children[$term->parent][] = $term->term_id; + } + update_option("{$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. + * + * @package WordPress + * @subpackage Taxonomy + * @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. + * + * @package WordPress + * @subpackage Taxonomy + * @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 + $results = $wpdb->get_results("SELECT object_id, term_taxonomy_id FROM $wpdb->term_relationships INNER JOIN $wpdb->posts ON object_id = ID WHERE term_taxonomy_id IN (".join(',', array_keys($term_ids)).") AND post_type = 'post' 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 ( $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 posts. + * + * Private function for the default callback for post_tag and category + * taxonomies. + * + * @package WordPress + * @subpackage Taxonomy + * @access private + * @since 2.3.0 + * @uses $wpdb + * + * @param array $terms List of Term taxonomy IDs + */ +function _update_post_term_count( $terms ) { + global $wpdb; + + foreach ( (array) $terms as $term ) { + $count = $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 = 'post' AND term_taxonomy_id = %d", $term ) ); + do_action( 'edit_term_taxonomy', $term ); + $wpdb->update( $wpdb->term_taxonomy, compact( 'count' ), array( 'term_taxonomy_id' => $term ) ); + do_action( 'edited_term_taxonomy', $term ); + } +} + + +/** + * Generates a permalink for a taxonomy term archive. + * + * @since 2.5.0 + * + * @param object|int|string $term + * @param string $taxonomy + * @return string HTML link to taxonomy term archive + */ +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_wp_error( $term ) ) + return $term; + + // use legacy functions for core taxonomies until they are fully plugged in + if ( $taxonomy == 'category' ) + return get_category_link((int) $term->term_id); + if ( $taxonomy == 'post_tag' ) + return get_tag_link((int) $term->term_id); + + $termlink = $wp_rewrite->get_extra_permastruct($taxonomy); + + $slug = $term->slug; + + if ( empty($termlink) ) { + $file = trailingslashit( get_option('home') ); + $t = get_taxonomy($taxonomy); + if ( $t->query_var ) + $termlink = "$file?$t->query_var=$slug"; + else + $termlink = "$file?taxonomy=$taxonomy&term=$slug"; + } else { + $termlink = str_replace("%$taxonomy%", $slug, $termlink); + $termlink = get_option('home') . user_trailingslashit($termlink, 'category'); + } + 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. + * + * @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' => '', + ); + + $r = wp_parse_args( $args, $defaults ); + extract( $r, EXTR_SKIP ); + + echo $before . join($sep, get_the_taxonomies($post)) . $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 $post Optional. Post ID or will use Global Post ID (in loop). + * @return array + */ +function get_the_taxonomies($post = 0) { + if ( is_int($post) ) + $post =& get_post($post); + elseif ( !is_object($post) ) + $post =& $GLOBALS['post']; + + $taxonomies = array(); + + if ( !$post ) + return $taxonomies; + + $template = apply_filters('taxonomy_template', '%s: %l.'); + + foreach ( get_object_taxonomies($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, $taxonomy); + if ( empty($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 $post Optional. Post ID + * @return array + */ +function get_post_taxonomies($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 ( empty( $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; +} + +?>