<?php
/**
+ * Taxonomy API
+ *
* @package WordPress
* @subpackage Taxonomy
- * @since 2.3
+ * @since 2.3.0
*/
//
//
/**
- * Default Taxonomy Objects
- * @since 2.3
- * @global array $wp_taxonomies
+ * Creates the initial taxonomies when 'init' action is fired.
*/
-$wp_taxonomies = array();
-$wp_taxonomies['category'] = (object) array('name' => 'category', 'object_type' => 'post', 'hierarchical' => true, 'update_count_callback' => '_update_post_term_count');
-$wp_taxonomies['post_tag'] = (object) array('name' => 'post_tag', 'object_type' => 'post', 'hierarchical' => false, 'update_count_callback' => '_update_post_term_count');
-$wp_taxonomies['link_category'] = (object) array('name' => 'link_category', 'object_type' => 'link', 'hierarchical' => false);
+function create_initial_taxonomies() {
+ register_taxonomy( 'category', 'post', array('hierarchical' => 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.
*
* @package WordPress
* @subpackage Taxonomy
- * @since 2.3
+ * @since 2.3.0
*
* @uses $wp_taxonomies
*
$object = (array) $object;
$taxonomies = array();
- foreach ( $wp_taxonomies as $taxonomy ) {
+ foreach ( (array) $wp_taxonomies as $taxonomy ) {
if ( array_intersect($object, (array) $taxonomy->object_type) )
$taxonomies[] = $taxonomy->name;
}
*
* @package WordPress
* @subpackage Taxonomy
- * @since 2.3
+ * @since 2.3.0
*
* @uses $wp_taxonomies
* @uses is_taxonomy() Checks whether taxonomy exists
*
* @package WordPress
* @subpackage Taxonomy
- * @since 2.3
+ * @since 2.3.0
*
* @uses $wp_taxonomies
*
*
* @package WordPress
* @subpackage Taxonomy
- * @since 2.3
+ * @since 2.3.0
*
* @uses is_taxonomy() Checks whether taxonomy exists
* @uses get_taxonomy() Used to get the taxonomy object
*
* @package WordPress
* @subpackage Taxonomy
- * @since 2.3
+ * @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
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);
*
* @package WordPress
* @subpackage Taxonomy
- * @since 2.3
+ * @since 2.3.0
*
* @uses $wpdb
* @uses wp_parse_args() Creates an array from string $args.
if ( !is_array($taxonomies) )
$taxonomies = array($taxonomies);
- foreach ( $taxonomies as $taxonomy ) {
+ foreach ( (array) $taxonomies as $taxonomy ) {
if ( ! is_taxonomy($taxonomy) )
return new WP_Error('invalid_taxonomy', __('Invalid Taxonomy'));
}
*
* @package WordPress
* @subpackage Taxonomy
- * @since 2.3
+ * @since 2.3.0
*
* @uses $wpdb
* @uses sanitize_term() Cleanses the term based on $filter context before returning.
function &get_term($term, $taxonomy, $output = OBJECT, $filter = 'raw') {
global $wpdb;
- if ( empty($term) )
- return null;
+ if ( empty($term) ) {
+ $error = new WP_Error('invalid_term', __('Empty Term'));
+ return $error;
+ }
- if ( ! is_taxonomy($taxonomy) )
- return new WP_Error('invalid_taxonomy', __('Invalid Taxonomy'));
+ if ( ! is_taxonomy($taxonomy) ) {
+ $error = new WP_Error('invalid_taxonomy', __('Invalid Taxonomy'));
+ return $error;
+ }
- if ( is_object($term) ) {
+ 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 ( $output == OBJECT ) {
return $_term;
} elseif ( $output == ARRAY_A ) {
- return get_object_vars($_term);
+ $__term = get_object_vars($_term);
+ return $__term;
} elseif ( $output == ARRAY_N ) {
- return array_values(get_object_vars($_term));
+ $__term = array_values(get_object_vars($_term));
+ return $__term;
} else {
return $_term;
}
*
* @package WordPress
* @subpackage Taxonomy
- * @since 2.3
+ * @since 2.3.0
*
* @uses $wpdb
* @uses sanitize_term() Cleanses the term based on $filter context before returning.
return false;
} else if ( 'name' == $field ) {
// Assume already escaped
+ $value = stripslashes($value);
$field = 't.name';
} else {
$field = 't.term_id';
}
/**
- * Merge all term children into a single array.
+ * 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. Only useful for taxonomies which are hierarchical.
+ * 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
+ * @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 Name of Term to get children
+ * @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, $taxonomy ) {
+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]) )
+ if ( ! isset($terms[$term_id]) )
return array();
- $children = $terms[$term];
+ $children = $terms[$term_id];
- foreach ( $terms[$term] as $child ) {
+ foreach ( (array) $terms[$term_id] as $child ) {
if ( isset($terms[$child]) )
$children = array_merge($children, get_term_children($child, $taxonomy));
}
*
* @package WordPress
* @subpackage Taxonomy
- * @since 2.3
+ * @since 2.3.0
*
* @uses sanitize_term_field() Passes the return value in sanitize_term_field on success.
*
*
* @package WordPress
* @subpackage Taxonomy
- * @since 2.3
+ * @since 2.3.0
*
* @uses sanitize_term() Passes the return value on success
*
}
/**
- * Retrieve the terms in taxonomy or list of taxonomies.
+ * 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 'list_terms_exclusions' filter passes the compiled exclusions along with
* the $args.
*
- * The list that $args can contain, which will overwrite the defaults.
+ * 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, or nothing (will use
- * term_id).
+ * 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.
- * fields - Default is all.
- * slug - Any terms that has this value. Default is empty string.
- * hierarchical - Whether to return hierarchical taxonomy. Default is true.
- * name__like - Default is empty string.
*
- * The argument 'pad_counts' will count all of the children along with the
- * $terms.
+ * 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.
*
- * The 'get' argument allows for overwriting 'hide_empty' and 'child_of', which
- * can be done by setting the value to 'all', instead of its default empty
- * string value.
+ * offset - The number by which to offset the terms query.
*
- * The 'child_of' argument will be used if you use multiple taxonomy or the
- * first $taxonomy isn't hierarchical or 'parent' isn't used. The default is 0,
- * which will be translated to a false value. If 'child_of' is set, then
- * 'child_of' value will be tested against $taxonomy to see if 'child_of' is
- * contained within. Will return an empty array if test fails.
+ * 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.
*
- * If 'parent' is set, then it will be used to test against the first taxonomy.
- * Much like 'child_of'. Will return an empty array if the test fails.
+ * 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
+ * @since 2.3.0
*
* @uses $wpdb
* @uses wp_parse_args() Merges the defaults with those defined by $args and allows for strings.
$taxonomies = array($taxonomies);
}
- foreach ( $taxonomies as $taxonomy ) {
- if ( ! is_taxonomy($taxonomy) )
- return new WP_Error('invalid_taxonomy', __('Invalid Taxonomy'));
+ 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' => '', 'include' => '',
+ '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['number'] = absint( $args['number'] );
$args['offset'] = absint( $args['offset'] );
if ( !$single_taxonomy || !is_taxonomy_hierarchical($taxonomies[0]) ||
- '' != $args['parent'] ) {
+ '' !== $args['parent'] ) {
$args['child_of'] = 0;
$args['hierarchical'] = false;
$args['pad_counts'] = false;
// $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 );
-
- if ( $cache = wp_cache_get( 'get_terms', 'terms' ) ) {
- if ( isset( $cache[ $key ] ) )
- return apply_filters('get_terms', $cache[$key], $taxonomies, $args);
+ $last_changed = wp_cache_get('last_changed', 'terms');
+ if ( !$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;
}
- if ( 'count' == $orderby )
+ $_orderby = strtolower($orderby);
+ if ( 'count' == $_orderby )
$orderby = 'tt.count';
- else if ( 'name' == $orderby )
+ else if ( 'name' == $_orderby )
$orderby = 't.name';
- else if ( 'slug' == $orderby )
+ else if ( 'slug' == $_orderby )
$orderby = 't.slug';
- else if ( 'term_group' == $orderby )
+ else if ( 'term_group' == $_orderby )
$orderby = 't.term_group';
- else
+ elseif ( empty($_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 ( $interms as $interm ) {
+ foreach ( (array) $interms as $interm ) {
if (empty($inclusions))
$inclusions = ' AND ( t.term_id = ' . intval($interm) . ' ';
else
$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 ( $exterms as $exterm ) {
- if (empty($exclusions))
+ 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($name__like) )
$where .= " AND t.name LIKE '{$name__like}%'";
- if ( '' != $parent ) {
+ if ( '' !== $parent ) {
$parent = (int) $parent;
$where .= " AND tt.parent = '$parent'";
}
if ( $hide_empty && !$hierarchical )
$where .= ' AND tt.count > 0';
- if ( !empty($number) ) {
+ // don't limit the query results when we have to descend the family tree
+ if ( ! empty($number) && ! $hierarchical && empty( $child_of ) && '' === $parent ) {
if( $offset )
- $number = 'LIMIT ' . $offset . ',' . $number;
+ $limit = 'LIMIT ' . $offset . ',' . $number;
else
- $number = 'LIMIT ' . $number;
+ $limit = 'LIMIT ' . $number;
} else
- $number = '';
+ $limit = '';
if ( !empty($search) ) {
$search = like_escape($search);
$where .= " AND (t.name LIKE '%$search%')";
}
- $select_this = '';
+ $selects = array();
if ( 'all' == $fields )
- $select_this = 't.*, tt.*';
+ $selects = array('t.*', 'tt.*');
else if ( 'ids' == $fields )
- $select_this = 't.term_id';
+ $selects = array('t.term_id', 'tt.parent', 'tt.count');
else if ( 'names' == $fields )
- $select_this = 't.name';
+ $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 $number";
+ $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 ) {
- $terms = $wpdb->get_results($query);
update_term_cache($terms);
- } else if ( ('ids' == $fields) || ('names' == $fields) ) {
- $terms = $wpdb->get_col($query);
}
if ( empty($terms) ) {
- $cache[ $key ] = array();
- wp_cache_set( 'get_terms', $cache, 'terms' );
- return apply_filters('get_terms', array(), $taxonomies, $args);
+ wp_cache_add( $cache_key, array(), 'terms' );
+ $terms = apply_filters('get_terms', array(), $taxonomies, $args);
+ return $terms;
}
- if ( $child_of || $hierarchical ) {
+ 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 )
+ if ( $pad_counts && 'all' == $fields )
_pad_term_counts($terms, $taxonomies[0]);
// Make sure we show empty categories that have children.
- if ( $hierarchical && $hide_empty ) {
+ 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]);
- foreach ( $children as $child )
- if ( $child->count )
- continue 2;
+ if( is_array($children) )
+ foreach ( $children as $child )
+ if ( $child->count )
+ continue 2;
// It really is empty
unset($terms[$k]);
}
reset ( $terms );
- $cache[ $key ] = $terms;
- wp_cache_set( 'get_terms', $cache, '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;
*
* @package WordPress
* @subpackage Taxonomy
- * @since 2.3
+ * @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, $taxonomy = '') {
+function is_term($term, $taxonomy = '', $parent = 0) {
global $wpdb;
$select = "SELECT term_id FROM $wpdb->terms as t WHERE ";
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) ) {
- 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", $slug, $taxonomy), ARRAY_A) )
+ $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", $term, $taxonomy), ARRAY_A);
+
+ 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", $slug) ) )
+ 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", $term) );
+ return $wpdb->get_var( $wpdb->prepare("SELECT term_id FROM $wpdb->terms as t WHERE $else_where", $else_where_fields) );
}
/**
*
* @package WordPress
* @subpackage Taxonomy
- * @since 2.3
+ * @since 2.3.0
*
* @uses sanitize_term_field Used to sanitize all fields in a term
*
if ( is_object($term) )
$do_object = true;
- foreach ( $fields as $field ) {
- if ( $do_object )
- $term->$field = sanitize_term_field($field, $term->$field, $term->term_id, $taxonomy, $context);
- else
- $term[$field] = sanitize_term_field($field, $term[$field], $term['term_id'], $taxonomy, $context);
+ $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;
}
*
* @package WordPress
* @subpackage Taxonomy
- * @since 2.3
+ * @since 2.3.0
*
* @uses $wpdb
*
if ( 'description' == $field )
$value = format_to_edit($value);
else
- $value = attribute_escape($value);
+ $value = esc_attr($value);
} else if ( 'db' == $context ) {
$value = apply_filters("pre_term_$field", $value, $taxonomy);
$value = apply_filters("pre_${taxonomy}_$field", $value);
}
if ( 'attribute' == $context )
- $value = attribute_escape($value);
+ $value = esc_attr($value);
else if ( 'js' == $context )
- $value = js_escape($value);
+ $value = esc_js($value);
return $value;
}
*
* @package WordPress
* @subpackage Taxonomy
- * @since 2.3
+ * @since 2.3.0
*
* @uses $wpdb
* @uses wp_parse_args() Turns strings into arrays and merges defaults into an array.
*
* @package WordPress
* @subpackage Taxonomy
- * @since 2.3
+ * @since 2.3.0
* @uses $wpdb
*
* @param int $object_id The term Object Id that refers to the term
if ( !is_array($taxonomies) )
$taxonomies = array($taxonomies);
- foreach ( $taxonomies as $taxonomy ) {
- $terms = wp_get_object_terms($object_id, $taxonomy, 'fields=tt_ids');
- $in_terms = "'" . implode("', '", $terms) . "'";
- $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->term_relationships WHERE object_id = %d AND term_taxonomy_id IN ($in_terms)", $object_id) );
- wp_update_term_count($terms, $taxonomy);
+ 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);
}
}
* 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
+ * @since 2.3.0
*
* @uses $wpdb
* @uses do_action() Calls both 'delete_term' and 'delete_$taxonomy' action
$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, $taxonomy, 'fields=ids');
- if ( 1 == count($terms) && isset($default) )
+ $terms = wp_get_object_terms($object, $taxonomy, array('fields' => 'ids', 'orderby' => 'none'));
+ if ( 1 == count($terms) && isset($default) ) {
$terms = array($default);
- else
+ } 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);
}
*
* @package WordPress
* @subpackage Taxonomy
- * @since 2.3
+ * @since 2.3.0
* @uses $wpdb
*
* @param int|array $object_id The id of the object(s) to retrieve.
if ( !is_array($taxonomies) )
$taxonomies = array($taxonomies);
- foreach ( $taxonomies as $taxonomy ) {
+ foreach ( (array) $taxonomies as $taxonomy ) {
if ( ! is_taxonomy($taxonomy) )
return new WP_Error('invalid_taxonomy', __('Invalid Taxonomy'));
}
$orderby = 't.term_group';
else if ( 'term_order' == $orderby )
$orderby = 'tr.term_order';
- else
+ 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);
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) ORDER BY $orderby $order";
+ $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));
} 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) ORDER BY tr.term_taxonomy_id $order");
+ $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 )
- return array();
+ $terms = array();
- return $terms;
+ return apply_filters('wp_get_object_terms', $terms, $object_ids, $taxonomies, $args);
}
/**
*
* @package WordPress
* @subpackage Taxonomy
- * @since 2.3
+ * @since 2.3.0
* @uses $wpdb
*
* @uses do_action() Calls 'create_term' hook with the term id and taxonomy id as parameters.
} 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->query( $wpdb->prepare( "UPDATE $wpdb->terms SET term_group = %d WHERE term_id = %d", $term_group, $alias->term_id ) );
+ $wpdb->update($wpdb->terms, compact('term_group'), array('term_id' => $alias->term_id) );
}
}
*
* @package WordPress
* @subpackage Taxonomy
- * @since 2.3
+ * @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.
+ * @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
$terms = array($terms);
if ( ! $append )
- $old_terms = wp_get_object_terms($object_id, $taxonomy, 'fields=tt_ids');
+ $old_tt_ids = wp_get_object_terms($object_id, $taxonomy, array('fields' => 'tt_ids', 'orderby' => 'none'));
$tt_ids = array();
$term_ids = array();
- foreach ($terms as $term) {
+ foreach ( (array) $terms as $term) {
if ( !strlen(trim($term)) )
continue;
- if ( !$id = is_term($term, $taxonomy) )
- $id = wp_insert_term($term, $taxonomy);
- if ( is_wp_error($id) )
- return $id;
- $term_ids[] = $id['term_id'];
- $id = $id['term_taxonomy_id'];
- $tt_ids[] = $id;
+ if ( !$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, $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' => $id ) );
+ $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_terms, $tt_ids);
+ $delete_terms = array_diff($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) );
$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;
}
*
* @package WordPress
* @subpackage Taxonomy
- * @since 2.3
+ * @since 2.3.0
* @uses $wpdb
*
* @param string $slug The string that will be tried for a unique slug
*
* @package WordPress
* @subpackage Taxonomy
- * @since 2.3
+ * @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 The ID of the term
+ * @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, $taxonomy, $args = array() ) {
+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;
+ $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);
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));
+ 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' ) );
/**
* Enable or disable term counting.
*
- * @since 2.6
+ * @since 2.5.0
*
- * @param bool $defer Optional.
- * @return bool
+ * @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) {
+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 );
+ wp_update_term_count( null, null, true );
}
return $_defer;
*
* @package WordPress
* @subpackage Taxonomy
- * @since 2.3
+ * @since 2.3.0
* @uses $wpdb
*
- * @param int|array $terms The ID of the terms
+ * @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.
*/
static $_deferred = array();
if ( $do_deferred ) {
- foreach ( array_keys($_deferred) as $tax ) {
+ foreach ( (array) array_keys($_deferred) as $tax ) {
wp_update_term_count_now( $_deferred[$tax], $tax );
unset( $_deferred[$tax] );
}
/**
* Perform term count update immediately.
*
- * @since 2.6
+ * @since 2.5.0
*
- * @param array $terms IDs of Terms to update.
+ * @param array $terms The term_taxonomy_id of terms to update.
* @param string $taxonomy The context of the term.
* @return bool Always true when complete.
*/
call_user_func($taxonomy->update_count_callback, $terms);
} else {
// Default count updater
- foreach ($terms as $term) {
+ 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 ) );
}
*
* @package WordPress
* @subpackage Taxonomy
- * @since 2.3
+ * @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.
*
* @package WordPress
* @subpackage Taxonomy
- * @since 2.3
+ * @since 2.3.0
* @uses $wpdb
*
* @param int|array $ids Single or list of Term IDs
*/
function clean_term_cache($ids, $taxonomy = '') {
global $wpdb;
+ static $cleaned = array();
if ( !is_array($ids) )
$ids = array($ids);
}
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_delete('get_terms', 'terms');
+ wp_cache_set('last_changed', time(), 'terms');
do_action('clean_term_cache', $ids, $taxonomy);
}
*
* @package WordPress
* @subpackage Taxonomy
- * @since 2.3
+ * @since 2.3.0
*
* @uses wp_cache_get() Retrieves taxonomy relationship from cache
*
*
* @package WordPress
* @subpackage Taxonomy
- * @since 2.3
+ * @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)
*
* @package WordPress
* @subpackage Taxonomy
- * @since 2.3
+ * @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 ( $terms as $term ) {
+ foreach ( (array) $terms as $term ) {
$term_taxonomy = $taxonomy;
if ( empty($term_taxonomy) )
$term_taxonomy = $term->taxonomy;
/**
- * Retrieves children of taxonomy.
+ * Retrieves children of taxonomy as Term IDs.
*
* @package WordPress
* @subpackage Taxonomy
* @access private
- * @since 2.3
+ * @since 2.3.0
*
* @uses update_option() Stores all of the children in "$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.
+ * @return array Empty if $taxonomy isn't hierarachical or returns children as Term IDs.
*/
function _get_term_hierarchy($taxonomy) {
if ( !is_taxonomy_hierarchical($taxonomy) )
/**
- * Get array of child terms.
+ * Get the subset of $terms that are descendants of $term_id.
*
- * If $terms is an array of objects, then objects will returned from the
- * function. If $terms is an array of IDs, then an array of ids of children will
- * be returned.
+ * 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
+ * @since 2.3.0
*
- * @param int $term_id Look for this Term ID in $terms
- * @param array $terms List of Term IDs
- * @param string $taxonomy Term Context
- * @return array Empty if $terms is empty else returns full list of child terms.
+ * @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 ( ( 0 != $term_id ) && ! isset($has_children[$term_id]) )
return $empty_array;
- foreach ( $terms as $term ) {
+ foreach ( (array) $terms as $term ) {
$use_id = false;
if ( !is_object($term) ) {
$term = get_term($term, $taxonomy);
* @package WordPress
* @subpackage Taxonomy
* @access private
- * @since 2.3
+ * @since 2.3.0
* @uses $wpdb
*
* @param array $terms List of Term IDs
function _pad_term_counts(&$terms, $taxonomy) {
global $wpdb;
- // This function only works for post categories.
- if ( 'category' != $taxonomy )
+ // This function only works for hierarchical taxonomies like post categories.
+ if ( !is_taxonomy_hierarchical( $taxonomy ) )
return;
$term_hier = _get_term_hierarchy($taxonomy);
$term_items = array();
- foreach ( $terms as $key => $term ) {
+ foreach ( (array) $terms as $key => $term ) {
$terms_by_id[$term->term_id] = & $terms[$key];
$term_ids[$term->term_taxonomy_id] = $term->term_id;
}
$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];
+ $term_items[$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
$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];
+ 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;
}
}
* @package WordPress
* @subpackage Taxonomy
* @access private
- * @since 2.3
+ * @since 2.3.0
* @uses $wpdb
*
- * @param array $terms List of Term IDs
+ * @param array $terms List of Term taxonomy IDs
*/
function _update_post_term_count( $terms ) {
global $wpdb;
- foreach ( $terms as $term ) {
+ 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 2.6
+ * @since 2.5.0
*
* @param object|int|string $term
* @param string $taxonomy
function get_term_link( $term, $taxonomy ) {
global $wp_rewrite;
- // use legacy functions for core taxonomies until they are fully plugged in
- if ( $taxonomy == 'category' )
- return get_category_link($term);
- if ( $taxonomy == 'post_tag' )
- return get_tag_link($term);
-
- $termlink = $wp_rewrite->get_extra_permastruct($taxonomy);
-
if ( !is_object($term) ) {
if ( is_int($term) ) {
$term = &get_term($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) ) {
* 'sep' : default is empty string. Separate every taxonomy with value in this.
* 'after' : default is empty string. Display this after the taxonomies list.
*
- * @since 2.6
+ * @since 2.5.0
* @uses get_the_taxonomies()
*
* @param array $args Override the defaults.
* 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 2.6
+ * @since 2.5.0
*
* @param int $post Optional. Post ID or will use Global Post ID (in loop).
* @return array
$links = array();
foreach ( $terms as $term )
- $links[] = "<a href='" . attribute_escape(get_term_link($term, $taxonomy)) . "'>$term->name</a>";
+ $links[] = "<a href='" . esc_attr(get_term_link($term, $taxonomy)) . "'>$term->name</a>";
if ( $links )
$taxonomies[$taxonomy] = wp_sprintf($t['template'], $t['label'], $links, $terms);
/**
* Retrieve all taxonomies of a post with just the names.
*
- * @since 2.6
+ * @since 2.5.0
* @uses get_object_taxonomies()
*
* @param int $post Optional. Post ID
return get_object_taxonomies($post);
}
-?>
\ No newline at end of file
+/**
+ * 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;
+}
+
+?>