<?php
+/**
+ * Taxonomy API
+ *
+ * @package WordPress
+ * @subpackage Taxonomy
+ * @since 2.3.0
+ */
//
// Taxonomy Registration
//
/**
- * @global array $wp_taxonomies Fill me out please
+ * Creates the initial taxonomies when 'init' action is fired.
*/
-$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
/**
- * get_object_taxonomies() - Return all of the taxonomy names that are of $object_type
+ * 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.
*
- * @example
- * <?php $taxonomies = get_object_taxonomies('post'); ?>
- * Should result in <pre>Array(
- * 'category',
- * 'post_tag'
- * )</pre>
+ * <code><?php $taxonomies = get_object_taxonomies('post'); ?></code> Should
+ * result in <code>Array('category', 'post_tag')</code>
*
- * @package Taxonomy
- * @global array $wp_taxonomies
- * @param string $object_type Name of the type of taxonomy object
- * @return array The names of all within the object_type.
+ * @package WordPress
+ * @subpackage Taxonomy
+ * @since 2.3.0
*
- * @internal
- * This is all conjecture and might be partially or completely inaccurate.
+ * @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_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 ( $wp_taxonomies as $taxonomy ) {
- if ( $object_type == $taxonomy->object_type )
+ foreach ( (array) $wp_taxonomies as $taxonomy ) {
+ if ( array_intersect($object, (array) $taxonomy->object_type) )
$taxonomies[] = $taxonomy->name;
}
}
/**
- * get_taxonomy() - Returns the "taxonomy" object of $taxonomy.
+ * 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 Taxonomy
- * @global array $wp_taxonomies
- * @param string $taxonomy Name of taxonomy object to return
- * @return object|bool The Taxonomy Object or false if taxonomy doesn't exist
+ * @package WordPress
+ * @subpackage Taxonomy
+ * @since 2.3.0
+ *
+ * @uses $wp_taxonomies
+ * @uses is_taxonomy() Checks whether taxonomy exists
*
- * @internal
- * This is all conjecture and might be partially or completely inaccurate.
+ * @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;
}
/**
- * is_taxonomy() - Checks that the taxonomy name exists
+ * Checks that the taxonomy name exists.
+ *
+ * @package WordPress
+ * @subpackage Taxonomy
+ * @since 2.3.0
+ *
+ * @uses $wp_taxonomies
*
- * @package Taxonomy
- * @global array $wp_taxonomies
* @param string $taxonomy Name of taxonomy object
* @return bool Whether the taxonomy exists or not.
- *
- * @internal
- * This is all conjecture and might be partially or completely inaccurate.
*/
function is_taxonomy( $taxonomy ) {
global $wp_taxonomies;
}
/**
- * is_taxonomy_hierarchical() - Whether the taxonomy object is hierarchical
+ * 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.
*
- * 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.
*
- * 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
*
- * @package Taxonomy
- * @global array $wp_taxonomies
* @param string $taxonomy Name of taxonomy object
* @return bool Whether the taxonomy is hierarchical
- *
- * @internal
- * This is all conjecture and might be partially or completely inaccurate.
*/
function is_taxonomy_hierarchical($taxonomy) {
if ( ! is_taxonomy($taxonomy) )
}
/**
- * register_taxonomy() - Create or modify a taxonomy object.
+ * 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:
*
- * 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.
+ * hierarachical - has some defined purpose at other parts of the API and is a
+ * boolean value.
*
- * The function keeps a default set, allowing for the $args to be optional but allow the other
- * functions to still work. It is possible to overwrite the default set, which contains two
- * keys: hierarchical and update_count_callback.
+ * update_count_callback - works much like a hook, in that it will be called
+ * when the count is updated.
*
- * hierarachical has some defined purpose at other parts of the API and is a boolean value.
+ * rewrite - false to prevent rewrite, or array('slug'=>$slug) to customize
+ * permastruct; default will use $taxonomy as slug.
*
- * update_count_callback works much like a hook, in that it will be called (or something from
- * somewhere).
+ * query_var - false to prevent queries, or string to customize query var
+ * (?$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
*
- * @package Taxonomy
- * @global array $wp_taxonomies
* @param string $taxonomy Name of taxonomy object
- * @param string $object_type Name of the object type for the taxonomy object.
+ * @param array|string $object_type Name of the object type for the taxonomy object.
* @param array|string $args See above description for the two keys values.
- * @return null Nothing is returned, so expect error maybe or use is_taxonomy() to check.
- *
- * @internal
- * This is all conjecture and might be partially or completely inaccurate.
*/
function register_taxonomy( $taxonomy, $object_type, $args = array() ) {
- global $wp_taxonomies;
+ global $wp_taxonomies, $wp_rewrite, $wp;
- $defaults = array('hierarchical' => false, 'update_count_callback' => '');
+ if (!is_array($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;
//
/**
- * get_objects_in_term() - Return object_ids of valid taxonomy and term
+ * 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.
*
- * 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.
+ * 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'.
*
- * The $terms aren't checked the same as $taxonomies, but still need to exist for $object_ids to
- * be returned.
+ * @package WordPress
+ * @subpackage Taxonomy
+ * @since 2.3.0
*
- * 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'.
+ * @uses $wpdb
+ * @uses wp_parse_args() Creates an array from string $args.
*
- * @package Taxonomy
- * @subpackage Term
- * @global object $wpdb Database Query
* @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 object WP_Error - A PHP 4 compatible Exception class prototype
- * @return array Empty array if there are no $object_ids
- * @return array Array of $object_ids
- *
- * @internal
- * This is all conjecture and might be partially or completely inaccurate.
+ * @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 $wpdb;
if ( !is_array($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'));
}
$args = wp_parse_args( $args, $defaults );
extract($args, EXTR_SKIP);
+ $order = ( 'desc' == strtolower($order) ) ? 'DESC' : 'ASC';
+
$terms = array_map('intval', $terms);
$taxonomies = "'" . implode("', '", $taxonomies) . "'";
}
/**
- * get_term() -
+ * 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.
*
- * @package Taxonomy
- * @subpackage Term
- * @global object $wpdb Database Query
- * @param int|object $term
- * @param string $taxonomy
- * @param string $output Either OBJECT, ARRAY_A, or ARRAY_N
- * @return mixed Term Row from database
+ * There are two hooks, one is specifically for each term, named 'get_term', and
+ * the second is for the taxonomy name, 'term_$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.
*
- * @internal
- * This won't appear but just a note to say that this is all conjecture and parts or whole
- * might be inaccurate or wrong.
+ * @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) )
- 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("SELECT t.*, tt.* FROM $wpdb->terms AS t INNER JOIN $wpdb->term_taxonomy AS tt ON t.term_id = tt.term_id WHERE tt.taxonomy = '$taxonomy' AND t.term_id = '$term' LIMIT 1");
+ $_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);
}
}
-
- /**
- * @internal
- * Filter tag is basically: filter 'type' 'hook_name' 'description'
- *
- * Takes two parameters the term Object and the taxonomy name. Must return term object.
- * @filter object get_term Used in @see get_term() as a catch-all filter for every $term
- */
+
$_term = apply_filters('get_term', $_term, $taxonomy);
- /**
- * @internal
- * Filter tag is basically: filter 'type' 'hook_name' 'description'
- *
- * Takes two parameters the term Object and the taxonomy name. Must return term object.
- * $taxonomy will be the taxonomy name, so for example, if 'category', it would be 'get_category'
- * as the filter name.
- * Useful for custom taxonomies or plugging into default taxonomies.
- * @filter object get_$taxonomy Used in @see get_term() as specific filter for each $taxonomy.
- */
$_term = apply_filters("get_$taxonomy", $_term, $taxonomy);
$_term = sanitize_term($_term, $taxonomy, $filter);
if ( $output == OBJECT ) {
return $_term;
} elseif ( $output == ARRAY_A ) {
- return get_object_vars($_term);
+ $__term = get_object_vars($_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;
}
}
/**
- * get_term_by() -
+ * 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.
*
- * @package Taxonomy
- * @subpackage Term
- * @global object $wpdb Database Query
- * @param string $field
- * @param string $value
- * @param string $taxonomy
- * @param string $output Either OBJECT, ARRAY_A, or ARRAY_N
- * @return mixed Term Row from database
+ * 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.
*
- * @internal
- * This won't appear but just a note to say that this is all conjecture and parts or whole
- * might be inaccurate or wrong.
+ * @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;
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("SELECT t.*, tt.* FROM $wpdb->terms AS t INNER JOIN $wpdb->term_taxonomy AS tt ON t.term_id = tt.term_id WHERE tt.taxonomy = '$taxonomy' AND $field = '$value' LIMIT 1");
+ $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;
}
/**
- * get_term_children() - 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.
+ * 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.
*
- * Only useful for taxonomies which are hierarchical.
- *
- * @package Taxonomy
- * @subpackage Term
- * @global object $wpdb Database Query
- * @param string $term Name of Term to get children
- * @param string $taxonomy Taxonomy Name
- * @return array List of Term Objects
+ * Will return an empty array if $term does not exist in $taxonomy.
+ *
+ * @package WordPress
+ * @subpackage Taxonomy
+ * @since 2.3.0
*
- * @internal
- * This is all conjecture and might be partially or completely inaccurate.
+ * @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, $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));
}
}
/**
- * get_term_field() - 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 Taxonomy
- * @subpackage Term
+ * 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 ??
- * @return mixed @see sanitize_term_field()
- *
- * @internal
- * This is all conjecture and might be partially or completely inaccurate.
+ * @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;
}
/**
- * get_term_to_edit() - Sanitizes Term for editing
+ * 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
*
- * Return value is @see sanitize_term() and usage is for sanitizing the term
- * for editing. Function is for contextual and simplicity.
- *
- * @package Taxonomy
- * @subpackage Term
* @param int|object $id Term ID or Object
* @param string $taxonomy Taxonomy Name
- * @return mixed @see sanitize_term()
- *
- * @internal
- * This is all conjecture and might be partially or completely inaccurate.
+ * @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 );
}
/**
- * get_terms() -
+ * Retrieve the terms in a given taxonomy or list of taxonomies.
*
- *
- *
- * @package Taxonomy
- * @subpackage Term
- * @param string|array Taxonomy name or list of Taxonomy names
- * @param string|array $args ??
- * @return array List of Term Objects and their children.
+ * 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).
*
- * @internal
- * This is all conjecture and might be partially or completely inaccurate.
+ * 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) ) {
$taxonomies = array($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);
+ 'pad_counts' => false, 'offset' => '', 'search' => '');
$args = wp_parse_args( $args, $defaults );
- $args['number'] = (int) $args['number'];
+ $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;
if ( $child_of ) {
$hierarchy = _get_term_hierarchy($taxonomies[0]);
if ( !isset($hierarchy[$child_of]) )
- return array();
+ return $empty_array;
}
if ( $parent ) {
$hierarchy = _get_term_hierarchy($taxonomies[0]);
if ( !isset($hierarchy[$parent]) )
- return array();
+ return $empty_array;
}
- $key = md5( serialize( $args ) . serialize( $taxonomies ) );
- if ( $cache = wp_cache_get( 'get_terms', 'terms' ) ) {
- if ( isset( $cache[ $key ] ) )
- return apply_filters('get_terms', $cache[$key], $taxonomies, $args);
+ // $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;
}
- if ( 'count' == $orderby )
+ $_orderby = strtolower($orderby);
+ if ( 'count' == $_orderby )
$orderby = 'tt.count';
- else if ( 'name' == $orderby )
+ else if ( 'name' == $_orderby )
$orderby = 't.name';
- else
+ 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 ( $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) )
- $number = 'LIMIT ' . $number;
- else
- $number = '';
+ // don't limit the query results when we have to descend the family tree
+ if ( ! empty($number) && ! $hierarchical && empty( $child_of ) && '' === $parent ) {
+ if( $offset )
+ $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 )
- $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 ) {
- $terms = $wpdb->get_col($query);
}
- if ( empty($terms) )
- return array();
+ if ( empty($terms) ) {
+ 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;
}
/**
- * is_term() - Check if Term exists
+ * Check if Term exists.
*
* Returns the index of a defined term, or 0 (false) if the term doesn't exist.
*
- * @global $wpdb Database Object
+ * @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, $taxonomy = '') {
+function is_term($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;
- $where = "t.term_id = '$term'";
- } else {
- if ( ! $term = sanitize_title($term) )
- return 0;
- $where = "t.slug = '$term'";
+ $where = 't.term_id = %d';
+ if ( !empty($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_id = $wpdb->get_var("SELECT term_id FROM $wpdb->terms as t WHERE $where");
+ $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 $result;
- if ( empty($taxonomy) || empty($term_id) )
- return $term_id;
+ 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_row("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 $where AND tt.taxonomy = '$taxonomy'", ARRAY_A);
+ return $wpdb->get_var( $wpdb->prepare("SELECT term_id FROM $wpdb->terms as t WHERE $else_where", $else_where_fields) );
}
/**
- * sanitize_term() - Sanitize Term all fields
+ * Sanitize Term all fields.
*
- * Relys on @see sanitize_term_field() to sanitize the term. The difference
- * is that this function will sanitize <strong>all</strong> fields. The context
- * is based on @see sanitize_term_field().
+ * Relys on sanitize_term_field() to sanitize the term. The difference is that
+ * this function will sanitize <strong>all</strong> 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
+ * @param string $context Default is 'display'.
* @return array|object Term with all fields sanitized
*/
function sanitize_term($term, $taxonomy, $context = 'display') {
if ( is_object($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;
}
/**
- * sanitize_term_field() -
+ * 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
*
- * @global object $wpdb Database Object
* @param string $field Term field to sanitize
* @param string $value Search for this term value
* @param int $term_id Term ID
* @return mixed sanitized field
*/
function sanitize_term_field($field, $value, $term_id, $taxonomy, $context) {
- if ( 'parent' == $field || 'term_id' == $field || 'count' == $field
- || 'term_group' == $field )
+ 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);
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);
// 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);
+ $value = apply_filters("${taxonomy}_${field}_rss", $value);
} else {
// Use display filters by default.
$value = apply_filters("term_$field", $value, $term_id, $taxonomy, $context);
}
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;
}
/**
- * wp_count_terms() - Count how many terms are in Taxonomy
+ * Count how many terms are in Taxonomy.
*
- * Default $args is 'ignore_empty' which can be @example 'ignore_empty=true' or
- * @example array('ignore_empty' => true); See @see wp_parse_args() for more
- * information on parsing $args.
+ * Default $args is 'ignore_empty' which can be <code>'ignore_empty=true'</code>
+ * or <code>array('ignore_empty' => true);</code>.
+ *
+ * @package WordPress
+ * @subpackage Taxonomy
+ * @since 2.3.0
+ *
+ * @uses $wpdb
+ * @uses wp_parse_args() Turns strings into arrays and merges defaults into an array.
*
- * @global object $wpdb Database Object
* @param string $taxonomy Taxonomy name
* @param array|string $args Overwrite defaults
* @return int How many terms are in $taxonomy
if ( $ignore_empty )
$where = 'AND count > 0';
- return $wpdb->get_var("SELECT COUNT(*) FROM $wpdb->term_taxonomy WHERE taxonomy = '$taxonomy' $where");
+ return $wpdb->get_var( $wpdb->prepare("SELECT COUNT(*) FROM $wpdb->term_taxonomy WHERE taxonomy = %s $where", $taxonomy) );
}
/**
- * wp_delete_object_term_relationships() -
+ * 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
*
- * @global object $wpdb Database Object
- * @param int $object_id ??
+ * @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, $taxonomies ) {
if ( !is_array($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("DELETE FROM $wpdb->term_relationships WHERE object_id = '$object_id' AND term_taxonomy_id IN ($in_terms)");
- wp_update_term_count($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);
}
}
/**
* 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;
if ( ! $ids = is_term($term, $taxonomy) )
return false;
+ if ( is_wp_error( $ids ) )
+ return $ids;
+
$tt_id = $ids['term_taxonomy_id'];
$defaults = array();
return $term_obj;
$parent = $term_obj->parent;
- $wpdb->query("UPDATE $wpdb->term_taxonomy SET parent = '$parent' WHERE parent = '$term_obj->term_id' AND taxonomy = '$taxonomy'");
+ $wpdb->update( $wpdb->term_taxonomy, compact( 'parent' ), array( 'parent' => $term_obj->term_id) + compact( 'taxonomy' ) );
}
- $objects = $wpdb->get_col("SELECT object_id FROM $wpdb->term_relationships WHERE term_taxonomy_id = '$tt_id'");
+ $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);
}
- $wpdb->query("DELETE FROM $wpdb->term_taxonomy WHERE term_taxonomy_id = '$tt_id'");
+ $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("SELECT COUNT(*) FROM $wpdb->term_taxonomy WHERE term_id = '$term'") )
- $wpdb->query("DELETE FROM $wpdb->terms WHERE term_id = '$term'");
+ 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;
}
/**
- * Returns the terms associated with the given object(s), in the supplied taxonomies.
- * @param int|array $object_id The id of the object(s)) to retrieve for.
+ * 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.
- * @return array The requested term data.
+ * @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 ( $taxonomies as $taxonomy ) {
+ foreach ( (array) $taxonomies as $taxonomy ) {
if ( ! is_taxonomy($taxonomy) )
return new WP_Error('invalid_taxonomy', __('Invalid Taxonomy'));
}
$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 )
+ 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) 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 = $wpdb->get_results($query);
+ $terms = array_merge($terms, $wpdb->get_results($query));
update_term_cache($terms);
} else if ( 'ids' == $fields || 'names' == $fields ) {
- $terms = $wpdb->get_col($query);
+ $terms = array_merge($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);
}
/**
- * wp_insert_term() - Adds a new term to the database. Optionally marks it as an alias of an existing term.
+ * 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.
*
- * @global $wpdb Database Object
* @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 The Term ID and Term Taxonomy ID
+ * @return array|WP_Error The Term ID and Term Taxonomy ID
*/
function wp_insert_term( $term, $taxonomy, $args = array() ) {
global $wpdb;
if ( is_int($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;
$args = sanitize_term($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->fetch_row("SELECT term_id, term_group FROM $wpdb->terms WHERE slug = '$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 GROUP BY term_group") + 1;
- $wpdb->query("UPDATE $wpdb->terms SET term_group = $term_group WHERE term_id = $alias->term_id");
+ $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) ) {
- $wpdb->query("INSERT INTO $wpdb->terms (name, slug, term_group) VALUES ('$name', '$slug', '$term_group')");
+ 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);
- $wpdb->query("INSERT INTO $wpdb->terms (name, slug, term_group) VALUES ('$name', '$slug', '$term_group')");
+ 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->query("UPDATE $wpdb->terms SET slug = '$slug' WHERE term_id = '$term_id'");
+ $wpdb->update( $wpdb->terms, compact( 'slug' ), compact( 'term_id' ) );
}
- $tt_id = $wpdb->get_var("SELECT tt.term_taxonomy_id FROM $wpdb->term_taxonomy AS tt INNER JOIN $wpdb->terms AS t ON tt.term_id = t.term_id WHERE tt.taxonomy = '$taxonomy' AND t.term_id = $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->query("INSERT INTO $wpdb->term_taxonomy (term_id, taxonomy, description, parent, count) VALUES ('$term_id', '$taxonomy', '$description', '$parent', '0')");
+ $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);
}
/**
- * wp_set_object_terms() -
- *
- * 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).
+ * 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
*
- * @global $wpdb Database Object
* @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 $append If false will delete difference of terms.
+ * @return array|WP_Error Affected Term IDs
*/
function wp_set_object_terms($object_id, $terms, $taxonomy, $append = false) {
global $wpdb;
$terms = array($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 $term) {
- if ( !$id = is_term($term, $taxonomy) )
- $id = wp_insert_term($term, $taxonomy);
- $term_ids[] = $id['term_id'];
- $id = $id['term_taxonomy_id'];
- $tt_ids[] = $id;
+ 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("SELECT term_taxonomy_id FROM $wpdb->term_relationships WHERE object_id = '$object_id' AND term_taxonomy_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->query("INSERT INTO $wpdb->term_relationships (object_id, term_taxonomy_id) VALUES ('$object_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("DELETE FROM $wpdb->term_relationships WHERE object_id = '$object_id' AND term_taxonomy_id IN ($in_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 we didn't get a unique slug, try appending a number to make it unique.
- if ( $wpdb->get_var("SELECT slug FROM $wpdb->terms WHERE slug = '$slug'") ) {
+ 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("SELECT slug FROM $wpdb->terms WHERE slug = '$alt_slug'");
+ $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;
}
-function wp_update_term( $term, $taxonomy, $args = array() ) {
+/**
+ * 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;
+ $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);
$args = sanitize_term($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;
}
if ( $alias_of ) {
- $alias = $wpdb->fetch_row("SELECT term_id, term_group FROM $wpdb->terms WHERE slug = '$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 GROUP BY term_group") + 1;
- $wpdb->query("UPDATE $wpdb->terms SET term_group = $term_group WHERE term_id = $alias->term_id");
+ $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("SELECT term_id FROM $wpdb->terms WHERE slug = '$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, reset the slug to something unique.
+ // If an empty slug was passed or the parent changed, reset the slug to something unique.
// Otherwise, bail.
- if ( $empty_slug )
+ 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->query("UPDATE $wpdb->terms SET name = '$name', slug = '$slug', term_group = '$term_group' WHERE term_id = '$term_id'");
+ $wpdb->update($wpdb->terms, compact( 'name', 'slug', 'term_group' ), compact( 'term_id' ) );
if ( empty($slug) ) {
$slug = sanitize_title($name, $term_id);
- $wpdb->query("UPDATE $wpdb->terms SET slug = '$slug' WHERE term_id = '$term_id'");
+ $wpdb->update( $wpdb->terms, compact( 'slug' ), compact( 'term_id' ) );
}
- $tt_id = $wpdb->get_var("SELECT tt.term_taxonomy_id FROM $wpdb->term_taxonomy AS tt INNER JOIN $wpdb->terms AS t ON tt.term_id = t.term_id WHERE tt.taxonomy = '$taxonomy' AND t.term_id = $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->query("UPDATE $wpdb->term_taxonomy SET term_id = '$term_id', taxonomy = '$taxonomy', description = '$description', parent = '$parent' WHERE term_taxonomy_id = '$tt_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);
return array('term_id' => $term_id, 'term_taxonomy_id' => $tt_id);
}
-function wp_update_term_count( $terms, $taxonomy ) {
- global $wpdb;
+/**
+ * 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);
call_user_func($taxonomy->update_count_callback, $terms);
} else {
// Default count updater
- foreach ($terms as $term) {
- $count = $wpdb->get_var("SELECT COUNT(*) FROM $wpdb->term_relationships WHERE term_taxonomy_id = '$term'");
- $wpdb->query("UPDATE $wpdb->term_taxonomy SET count = '$count' WHERE term_taxonomy_id = '$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' => $term ) );
}
}
// Cache
//
-function clean_object_term_cache($object_ids, $object_type) {
- global $object_term_cache, $blog_id;
+/**
+ * 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);
- $taxonomies = get_object_taxonomies($object_type);
+ foreach ( $object_ids as $id )
+ foreach ( get_object_taxonomies($object_type) as $taxonomy )
+ wp_cache_delete($id, "{$taxonomy}_relationships");
- foreach ( $object_ids as $id ) {
- foreach ( $taxonomies as $taxonomy ) {
- if ( isset($object_term_cache[$blog_id][$id][$taxonomy]) )
- unset($object_term_cache[$blog_id][$id][$taxonomy]);
- }
- }
+ 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);
}
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');
-}
-
-function &get_object_term_cache($id, $taxonomy) {
- global $object_term_cache, $blog_id;
+ wp_cache_set('last_changed', time(), 'terms');
- if ( isset($object_term_cache[$blog_id][$id][$taxonomy]) )
- return $object_term_cache[$blog_id][$id][$taxonomy];
+ do_action('clean_term_cache', $ids, $taxonomy);
+}
- if ( isset($object_term_cache[$blog_id][$id]) )
- return array();
- return false;
+/**
+ * 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 $cache;
}
-function update_object_term_cache($object_ids, $object_type) {
- global $wpdb, $object_term_cache, $blog_id;
+/**
+ * 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);
- $count = count( $object_ids);
- for ( $i = 0; $i < $count; $i++ ) {
- $object_id = (int) $object_ids[ $i ];
- if ( isset( $object_term_cache[$blog_id][$object_id] ) ) {
- unset( $object_ids[ $i ] );
- continue;
+ $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 ( count( $object_ids ) == 0 )
- return;
+ if ( empty( $ids ) )
+ return false;
- $terms = wp_get_object_terms($object_ids, get_object_taxonomies($object_type), 'fields=all_with_object_id');
+ $terms = wp_get_object_terms($ids, $taxonomies, 'fields=all_with_object_id');
- if ( empty($terms) )
- return;
+ $object_terms = array();
+ foreach ( (array) $terms as $term )
+ $object_terms[$term->object_id][$term->taxonomy][$term->term_id] = $term;
- foreach ( $terms as $term )
- $object_term_cache[$blog_id][$term->object_id][$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_ids as $id ) {
- if ( ! isset($object_term_cache[$blog_id][$id]) )
- $object_term_cache[$blog_id][$id] = 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 ( $terms as $term ) {
+ foreach ( (array) $terms as $term ) {
$term_taxonomy = $taxonomy;
if ( empty($term_taxonomy) )
$term_taxonomy = $term->taxonomy;
// Private
//
+
+/**
+ * Retrieves children of taxonomy as Term IDs.
+ *
+ * @package WordPress
+ * @subpackage Taxonomy
+ * @access private
+ * @since 2.3.0
+ *
+ * @uses update_option() Stores all of the children in "$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();
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 array();
+ return $empty_array;
$term_list = array();
$has_children = _get_term_hierarchy($taxonomy);
if ( ( 0 != $term_id ) && ! isset($has_children[$term_id]) )
- return array();
+ return $empty_array;
- foreach ( $terms as $term ) {
+ foreach ( (array) $terms as $term ) {
$use_id = false;
if ( !is_object($term) ) {
$term = get_term($term, $taxonomy);
return $term_list;
}
-// Recalculates term counts by including items from child terms
-// Assumes all relevant children are already in the $terms argument
+
+/**
+ * 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 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;
}
}
- // Transfer the touched cells
+ // 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 ( $terms as $term ) {
- $count = $wpdb->get_var("SELECT COUNT(*) FROM $wpdb->term_relationships, $wpdb->posts WHERE $wpdb->posts.ID = $wpdb->term_relationships.object_id AND post_status = 'publish' AND post_type = 'post' AND term_taxonomy_id = '$term'");
- $wpdb->query("UPDATE $wpdb->term_taxonomy SET count = '$count' WHERE term_taxonomy_id = '$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 2.5.0
+ *
+ * @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 )
+ $links[] = "<a href='" . esc_attr(get_term_link($term, $taxonomy)) . "'>$term->name</a>";
+
+ 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;
}
?>
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