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<?php
/**
* Taxonomy API
*
* @package WordPress
* @subpackage Taxonomy
* @since 2.3.0
*/
//
// Taxonomy Registration
//
/**
* Creates the initial taxonomies.
*
* This function fires twice: in wp-settings.php before plugins are loaded (for
* backwards compatibility reasons), and again on the 'init' action. We must avoid
* registering rewrite rules before the 'init' action.
*/
function create_initial_taxonomies() {
global $wp_rewrite;
if ( ! did_action( 'init' ) ) {
$rewrite = array( 'category' => false, 'post_tag' => false, 'post_format' => false );
} else {
/**
* Filter the post formats rewrite base.
*
* @since 3.1.0
*
* @param string $context Context of the rewrite base. Default 'type'.
*/
$post_format_base = apply_filters( 'post_format_rewrite_base', 'type' );
$rewrite = array(
'category' => array(
'hierarchical' => true,
'slug' => get_option('category_base') ? get_option('category_base') : 'category',
'with_front' => ! get_option('category_base') || $wp_rewrite->using_index_permalinks(),
'ep_mask' => EP_CATEGORIES,
),
'post_tag' => array(
'hierarchical' => false,
'slug' => get_option('tag_base') ? get_option('tag_base') : 'tag',
'with_front' => ! get_option('tag_base') || $wp_rewrite->using_index_permalinks(),
'ep_mask' => EP_TAGS,
),
'post_format' => $post_format_base ? array( 'slug' => $post_format_base ) : false,
);
}
register_taxonomy( 'category', 'post', array(
'hierarchical' => true,
'query_var' => 'category_name',
'rewrite' => $rewrite['category'],
'public' => true,
'show_ui' => true,
'show_admin_column' => true,
'_builtin' => true,
) );
register_taxonomy( 'post_tag', 'post', array(
'hierarchical' => false,
'query_var' => 'tag',
'rewrite' => $rewrite['post_tag'],
'public' => true,
'show_ui' => true,
'show_admin_column' => true,
'_builtin' => true,
) );
register_taxonomy( 'nav_menu', 'nav_menu_item', array(
'public' => false,
'hierarchical' => false,
'labels' => array(
'name' => __( 'Navigation Menus' ),
'singular_name' => __( 'Navigation Menu' ),
),
'query_var' => false,
'rewrite' => false,
'show_ui' => false,
'_builtin' => true,
'show_in_nav_menus' => false,
) );
register_taxonomy( 'link_category', 'link', array(
'hierarchical' => false,
'labels' => array(
'name' => __( 'Link Categories' ),
'singular_name' => __( 'Link Category' ),
'search_items' => __( 'Search Link Categories' ),
'popular_items' => null,
'all_items' => __( 'All Link Categories' ),
'edit_item' => __( 'Edit Link Category' ),
'update_item' => __( 'Update Link Category' ),
'add_new_item' => __( 'Add New Link Category' ),
'new_item_name' => __( 'New Link Category Name' ),
'separate_items_with_commas' => null,
'add_or_remove_items' => null,
'choose_from_most_used' => null,
),
'capabilities' => array(
'manage_terms' => 'manage_links',
'edit_terms' => 'manage_links',
'delete_terms' => 'manage_links',
'assign_terms' => 'manage_links',
),
'query_var' => false,
'rewrite' => false,
'public' => false,
'show_ui' => false,
'_builtin' => true,
) );
register_taxonomy( 'post_format', 'post', array(
'public' => true,
'hierarchical' => false,
'labels' => array(
'name' => _x( 'Format', 'post format' ),
'singular_name' => _x( 'Format', 'post format' ),
),
'query_var' => true,
'rewrite' => $rewrite['post_format'],
'show_ui' => false,
'_builtin' => true,
'show_in_nav_menus' => current_theme_supports( 'post-formats' ),
) );
}
/**
* Get a list of registered taxonomy objects.
*
* @since 3.0.0
* @uses $wp_taxonomies
*
* @param array $args An array of key => value arguments to match against the taxonomy objects.
* @param string $output The type of output to return, either taxonomy 'names' or 'objects'. 'names' is the default.
* @param string $operator The logical operation to perform. 'or' means only one element
* from the array needs to match; 'and' means all elements must match. The default is 'and'.
* @return array A list of taxonomy names or objects
*/
function get_taxonomies( $args = array(), $output = 'names', $operator = 'and' ) {
global $wp_taxonomies;
$field = ('names' == $output) ? 'name' : false;
return wp_filter_object_list($wp_taxonomies, $args, $operator, $field);
}
/**
* Return all of the taxonomy names that are of $object_type.
*
* It appears that this function can be used to find all of the names inside of
* $wp_taxonomies global variable.
*
* `<?php $taxonomies = get_object_taxonomies('post'); ?>` Should
* result in `Array( 'category', 'post_tag' )`
*
* @since 2.3.0
*
* @uses $wp_taxonomies
*
* @param array|string|object $object Name of the type of taxonomy object, or an object (row from posts)
* @param string $output The type of output to return, either taxonomy 'names' or 'objects'. 'names' is the default.
* @return array The names of all taxonomy of $object_type.
*/
function get_object_taxonomies($object, $output = 'names') {
global $wp_taxonomies;
if ( is_object($object) ) {
if ( $object->post_type == 'attachment' )
return get_attachment_taxonomies($object);
$object = $object->post_type;
}
$object = (array) $object;
$taxonomies = array();
foreach ( (array) $wp_taxonomies as $tax_name => $tax_obj ) {
if ( array_intersect($object, (array) $tax_obj->object_type) ) {
if ( 'names' == $output )
$taxonomies[] = $tax_name;
else
$taxonomies[ $tax_name ] = $tax_obj;
}
}
return $taxonomies;
}
/**
* Retrieves the taxonomy object of $taxonomy.
*
* The get_taxonomy function will first check that the parameter string given
* is a taxonomy object and if it is, it will return it.
*
* @since 2.3.0
*
* @uses $wp_taxonomies
*
* @param string $taxonomy Name of taxonomy object to return
* @return object|bool The Taxonomy Object or false if $taxonomy doesn't exist
*/
function get_taxonomy( $taxonomy ) {
global $wp_taxonomies;
if ( ! taxonomy_exists( $taxonomy ) )
return false;
return $wp_taxonomies[$taxonomy];
}
/**
* Checks that the taxonomy name exists.
*
* Formerly is_taxonomy(), introduced in 2.3.0.
*
* @since 3.0.0
*
* @uses $wp_taxonomies
*
* @param string $taxonomy Name of taxonomy object
* @return bool Whether the taxonomy exists.
*/
function taxonomy_exists( $taxonomy ) {
global $wp_taxonomies;
return isset( $wp_taxonomies[$taxonomy] );
}
/**
* Whether the taxonomy object is hierarchical.
*
* Checks to make sure that the taxonomy is an object first. Then Gets the
* object, and finally returns the hierarchical value in the object.
*
* A false return value might also mean that the taxonomy does not exist.
*
* @since 2.3.0
*
* @param string $taxonomy Name of taxonomy object
* @return bool Whether the taxonomy is hierarchical
*/
function is_taxonomy_hierarchical($taxonomy) {
if ( ! taxonomy_exists($taxonomy) )
return false;
$taxonomy = get_taxonomy($taxonomy);
return $taxonomy->hierarchical;
}
/**
* Create or modify a taxonomy object. Do not use before init.
*
* A simple function for creating or modifying a taxonomy object based on the
* parameters given. The function will accept an array (third optional
* parameter), along with strings for the taxonomy name and another string for
* the object type.
*
* Nothing is returned, so expect error maybe or use taxonomy_exists() to check
* whether taxonomy exists.
*
* Optional $args contents:
*
* - label - Name of the taxonomy shown in the menu. Usually plural. If not set, labels['name'] will be used.
* - labels - An array of labels for this taxonomy.
* * By default tag labels are used for non-hierarchical types and category labels for hierarchical ones.
* * You can see accepted values in {@link get_taxonomy_labels()}.
* - description - A short descriptive summary of what the taxonomy is for. Defaults to blank.
* - public - If the taxonomy should be publicly queryable; //@TODO not implemented.
* * Defaults to true.
* - hierarchical - Whether the taxonomy is hierarchical (e.g. category). Defaults to false.
* - show_ui - Whether to generate a default UI for managing this taxonomy in the admin.
* * If not set, the default is inherited from public.
* - show_in_menu - Whether to show the taxonomy in the admin menu.
* * If true, the taxonomy is shown as a submenu of the object type menu.
* * If false, no menu is shown.
* * show_ui must be true.
* * If not set, the default is inherited from show_ui.
* - show_in_nav_menus - Makes this taxonomy available for selection in navigation menus.
* * If not set, the default is inherited from public.
* - show_tagcloud - Whether to list the taxonomy in the Tag Cloud Widget.
* * If not set, the default is inherited from show_ui.
* - show_in_quick_edit - Whether to show the taxonomy in the quick/bulk edit panel.
* * It not set, the default is inherited from show_ui.
* - show_admin_column - Whether to display a column for the taxonomy on its post type listing screens.
* * Defaults to false.
* - meta_box_cb - Provide a callback function for the meta box display.
* * If not set, defaults to post_categories_meta_box for hierarchical taxonomies
* and post_tags_meta_box for non-hierarchical.
* * If false, no meta box is shown.
* - capabilities - Array of capabilities for this taxonomy.
* * You can see accepted values in this function.
* - rewrite - Triggers the handling of rewrites for this taxonomy. Defaults to true, using $taxonomy as slug.
* * To prevent rewrite, set to false.
* * To specify rewrite rules, an array can be passed with any of these keys
* * 'slug' => string Customize the permastruct slug. Defaults to $taxonomy key
* * 'with_front' => bool Should the permastruct be prepended with WP_Rewrite::$front. Defaults to true.
* * 'hierarchical' => bool Either hierarchical rewrite tag or not. Defaults to false.
* * 'ep_mask' => const Assign an endpoint mask.
* * If not specified, defaults to EP_NONE.
* - query_var - Sets the query_var key for this taxonomy. Defaults to $taxonomy key
* * If false, a taxonomy cannot be loaded at ?{query_var}={term_slug}
* * If specified as a string, the query ?{query_var_string}={term_slug} will be valid.
* - update_count_callback - Works much like a hook, in that it will be called when the count is updated.
* * Defaults to _update_post_term_count() for taxonomies attached to post types, which then confirms
* that the objects are published before counting them.
* * Defaults to _update_generic_term_count() for taxonomies attached to other object types, such as links.
* - _builtin - true if this taxonomy is a native or "built-in" taxonomy. THIS IS FOR INTERNAL USE ONLY!
*
* @since 2.3.0
* @since 4.2.0 Introduced `show_in_quick_edit` argument.
*
* @global array $wp_taxonomies Registered taxonomies.
* @global WP $wp WP instance.
*
* @param string $taxonomy Taxonomy key, must not exceed 32 characters.
* @param array|string $object_type Name of the object type for the taxonomy object.
* @param array|string $args See optional args description above.
* @return null|WP_Error WP_Error if errors, otherwise null.
*/
function register_taxonomy( $taxonomy, $object_type, $args = array() ) {
global $wp_taxonomies, $wp;
if ( ! is_array( $wp_taxonomies ) )
$wp_taxonomies = array();
$defaults = array(
'labels' => array(),
'description' => '',
'public' => true,
'hierarchical' => false,
'show_ui' => null,
'show_in_menu' => null,
'show_in_nav_menus' => null,
'show_tagcloud' => null,
'show_in_quick_edit' => null,
'show_admin_column' => false,
'meta_box_cb' => null,
'capabilities' => array(),
'rewrite' => true,
'query_var' => $taxonomy,
'update_count_callback' => '',
'_builtin' => false,
);
$args = wp_parse_args( $args, $defaults );
if ( empty( $taxonomy ) || strlen( $taxonomy ) > 32 ) {
_doing_it_wrong( __FUNCTION__, __( 'Taxonomy names must be between 1 and 32 characters in length.' ), '4.2' );
return new WP_Error( 'taxonomy_length_invalid', __( 'Taxonomy names must be between 1 and 32 characters in length.' ) );
}
if ( false !== $args['query_var'] && ! empty( $wp ) ) {
if ( true === $args['query_var'] )
$args['query_var'] = $taxonomy;
else
$args['query_var'] = sanitize_title_with_dashes( $args['query_var'] );
$wp->add_query_var( $args['query_var'] );
}
if ( false !== $args['rewrite'] && ( is_admin() || '' != get_option( 'permalink_structure' ) ) ) {
$args['rewrite'] = wp_parse_args( $args['rewrite'], array(
'with_front' => true,
'hierarchical' => false,
'ep_mask' => EP_NONE,
) );
if ( empty( $args['rewrite']['slug'] ) )
$args['rewrite']['slug'] = sanitize_title_with_dashes( $taxonomy );
if ( $args['hierarchical'] && $args['rewrite']['hierarchical'] )
$tag = '(.+?)';
else
$tag = '([^/]+)';
add_rewrite_tag( "%$taxonomy%", $tag, $args['query_var'] ? "{$args['query_var']}=" : "taxonomy=$taxonomy&term=" );
add_permastruct( $taxonomy, "{$args['rewrite']['slug']}/%$taxonomy%", $args['rewrite'] );
}
// If not set, default to the setting for public.
if ( null === $args['show_ui'] )
$args['show_ui'] = $args['public'];
// If not set, default to the setting for show_ui.
if ( null === $args['show_in_menu' ] || ! $args['show_ui'] )
$args['show_in_menu' ] = $args['show_ui'];
// If not set, default to the setting for public.
if ( null === $args['show_in_nav_menus'] )
$args['show_in_nav_menus'] = $args['public'];
// If not set, default to the setting for show_ui.
if ( null === $args['show_tagcloud'] )
$args['show_tagcloud'] = $args['show_ui'];
// If not set, default to the setting for show_ui.
if ( null === $args['show_in_quick_edit'] ) {
$args['show_in_quick_edit'] = $args['show_ui'];
}
$default_caps = array(
'manage_terms' => 'manage_categories',
'edit_terms' => 'manage_categories',
'delete_terms' => 'manage_categories',
'assign_terms' => 'edit_posts',
);
$args['cap'] = (object) array_merge( $default_caps, $args['capabilities'] );
unset( $args['capabilities'] );
$args['name'] = $taxonomy;
$args['object_type'] = array_unique( (array) $object_type );
$args['labels'] = get_taxonomy_labels( (object) $args );
$args['label'] = $args['labels']->name;
// If not set, use the default meta box
if ( null === $args['meta_box_cb'] ) {
if ( $args['hierarchical'] )
$args['meta_box_cb'] = 'post_categories_meta_box';
else
$args['meta_box_cb'] = 'post_tags_meta_box';
}
$wp_taxonomies[ $taxonomy ] = (object) $args;
// register callback handling for metabox
add_filter( 'wp_ajax_add-' . $taxonomy, '_wp_ajax_add_hierarchical_term' );
/**
* Fires after a taxonomy is registered.
*
* @since 3.3.0
*
* @param string $taxonomy Taxonomy slug.
* @param array|string $object_type Object type or array of object types.
* @param array $args Array of taxonomy registration arguments.
*/
do_action( 'registered_taxonomy', $taxonomy, $object_type, $args );
}
/**
* Builds an object with all taxonomy labels out of a taxonomy object
*
* Accepted keys of the label array in the taxonomy object:
*
* - name - general name for the taxonomy, usually plural. The same as and overridden by $tax->label. Default is Tags/Categories
* - singular_name - name for one object of this taxonomy. Default is Tag/Category
* - search_items - Default is Search Tags/Search Categories
* - popular_items - This string isn't used on hierarchical taxonomies. Default is Popular Tags
* - all_items - Default is All Tags/All Categories
* - parent_item - This string isn't used on non-hierarchical taxonomies. In hierarchical ones the default is Parent Category
* - parent_item_colon - The same as `parent_item`, but with colon `:` in the end
* - edit_item - Default is Edit Tag/Edit Category
* - view_item - Default is View Tag/View Category
* - update_item - Default is Update Tag/Update Category
* - add_new_item - Default is Add New Tag/Add New Category
* - new_item_name - Default is New Tag Name/New Category Name
* - separate_items_with_commas - This string isn't used on hierarchical taxonomies. Default is "Separate tags with commas", used in the meta box.
* - add_or_remove_items - This string isn't used on hierarchical taxonomies. Default is "Add or remove tags", used in the meta box when JavaScript is disabled.
* - choose_from_most_used - This string isn't used on hierarchical taxonomies. Default is "Choose from the most used tags", used in the meta box.
* - not_found - Default is "No tags found"/"No categories found", used in the meta box and taxonomy list table.
*
* Above, the first default value is for non-hierarchical taxonomies (like tags) and the second one is for hierarchical taxonomies (like categories).
*
* @since 3.0.0
* @param object $tax Taxonomy object
* @return object object with all the labels as member variables
*/
function get_taxonomy_labels( $tax ) {
$tax->labels = (array) $tax->labels;
if ( isset( $tax->helps ) && empty( $tax->labels['separate_items_with_commas'] ) )
$tax->labels['separate_items_with_commas'] = $tax->helps;
if ( isset( $tax->no_tagcloud ) && empty( $tax->labels['not_found'] ) )
$tax->labels['not_found'] = $tax->no_tagcloud;
$nohier_vs_hier_defaults = array(
'name' => array( _x( 'Tags', 'taxonomy general name' ), _x( 'Categories', 'taxonomy general name' ) ),
'singular_name' => array( _x( 'Tag', 'taxonomy singular name' ), _x( 'Category', 'taxonomy singular name' ) ),
'search_items' => array( __( 'Search Tags' ), __( 'Search Categories' ) ),
'popular_items' => array( __( 'Popular Tags' ), null ),
'all_items' => array( __( 'All Tags' ), __( 'All Categories' ) ),
'parent_item' => array( null, __( 'Parent Category' ) ),
'parent_item_colon' => array( null, __( 'Parent Category:' ) ),
'edit_item' => array( __( 'Edit Tag' ), __( 'Edit Category' ) ),
'view_item' => array( __( 'View Tag' ), __( 'View Category' ) ),
'update_item' => array( __( 'Update Tag' ), __( 'Update Category' ) ),
'add_new_item' => array( __( 'Add New Tag' ), __( 'Add New Category' ) ),
'new_item_name' => array( __( 'New Tag Name' ), __( 'New Category Name' ) ),
'separate_items_with_commas' => array( __( 'Separate tags with commas' ), null ),
'add_or_remove_items' => array( __( 'Add or remove tags' ), null ),
'choose_from_most_used' => array( __( 'Choose from the most used tags' ), null ),
'not_found' => array( __( 'No tags found.' ), __( 'No categories found.' ) ),
);
$nohier_vs_hier_defaults['menu_name'] = $nohier_vs_hier_defaults['name'];
return _get_custom_object_labels( $tax, $nohier_vs_hier_defaults );
}
/**
* Add an already registered taxonomy to an object type.
*
* @since 3.0.0
* @uses $wp_taxonomies Modifies taxonomy object
*
* @param string $taxonomy Name of taxonomy object
* @param string $object_type Name of the object type
* @return bool True if successful, false if not
*/
function register_taxonomy_for_object_type( $taxonomy, $object_type) {
global $wp_taxonomies;
if ( !isset($wp_taxonomies[$taxonomy]) )
return false;
if ( ! get_post_type_object($object_type) )
return false;
if ( ! in_array( $object_type, $wp_taxonomies[$taxonomy]->object_type ) )
$wp_taxonomies[$taxonomy]->object_type[] = $object_type;
return true;
}
/**
* Remove an already registered taxonomy from an object type.
*
* @since 3.7.0
*
* @param string $taxonomy Name of taxonomy object.
* @param string $object_type Name of the object type.
* @return bool True if successful, false if not.
*/
function unregister_taxonomy_for_object_type( $taxonomy, $object_type ) {
global $wp_taxonomies;
if ( ! isset( $wp_taxonomies[ $taxonomy ] ) )
return false;
if ( ! get_post_type_object( $object_type ) )
return false;
$key = array_search( $object_type, $wp_taxonomies[ $taxonomy ]->object_type, true );
if ( false === $key )
return false;
unset( $wp_taxonomies[ $taxonomy ]->object_type[ $key ] );
return true;
}
//
// Term API
//
/**
* Retrieve object_ids of valid taxonomy and term.
*
* The strings of $taxonomies must exist before this function will continue. On
* failure of finding a valid taxonomy, it will return an WP_Error class, kind
* of like Exceptions in PHP 5, except you can't catch them. Even so, you can
* still test for the WP_Error class and get the error message.
*
* The $terms aren't checked the same as $taxonomies, but still need to exist
* for $object_ids to be returned.
*
* It is possible to change the order that object_ids is returned by either
* using PHP sort family functions or using the database by using $args with
* either ASC or DESC array. The value should be in the key named 'order'.
*
* @since 2.3.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param int|array $term_ids Term id or array of term ids of terms that will be used
* @param string|array $taxonomies String of taxonomy name or Array of string values of taxonomy names
* @param array|string $args Change the order of the object_ids, either ASC or DESC
* @return WP_Error|array If the taxonomy does not exist, then WP_Error will be returned. On success
* the array can be empty meaning that there are no $object_ids found or it will return the $object_ids found.
*/
function get_objects_in_term( $term_ids, $taxonomies, $args = array() ) {
global $wpdb;
if ( ! is_array( $term_ids ) ) {
$term_ids = array( $term_ids );
}
if ( ! is_array( $taxonomies ) ) {
$taxonomies = array( $taxonomies );
}
foreach ( (array) $taxonomies as $taxonomy ) {
if ( ! taxonomy_exists( $taxonomy ) ) {
return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy' ) );
}
}
$defaults = array( 'order' => 'ASC' );
$args = wp_parse_args( $args, $defaults );
$order = ( 'desc' == strtolower( $args['order'] ) ) ? 'DESC' : 'ASC';
$term_ids = array_map('intval', $term_ids );
$taxonomies = "'" . implode( "', '", $taxonomies ) . "'";
$term_ids = "'" . implode( "', '", $term_ids ) . "'";
$object_ids = $wpdb->get_col("SELECT tr.object_id FROM $wpdb->term_relationships AS tr INNER JOIN $wpdb->term_taxonomy AS tt ON tr.term_taxonomy_id = tt.term_taxonomy_id WHERE tt.taxonomy IN ($taxonomies) AND tt.term_id IN ($term_ids) ORDER BY tr.object_id $order");
if ( ! $object_ids ){
return array();
}
return $object_ids;
}
/**
* Given a taxonomy query, generates SQL to be appended to a main query.
*
* @since 3.1.0
*
* @see WP_Tax_Query
*
* @param array $tax_query A compact tax query
* @param string $primary_table
* @param string $primary_id_column
* @return array
*/
function get_tax_sql( $tax_query, $primary_table, $primary_id_column ) {
$tax_query_obj = new WP_Tax_Query( $tax_query );
return $tax_query_obj->get_sql( $primary_table, $primary_id_column );
}
/**
* Class for generating SQL clauses that filter a primary query according to object taxonomy terms.
*
* `WP_Tax_Query` is a helper that allows primary query classes, such as {@see WP_Query}, to filter
* their results by object metadata, by generating `JOIN` and `WHERE` subclauses to be attached
* to the primary SQL query string.
*
* @since 3.1.0
*/
class WP_Tax_Query {
/**
* Array of taxonomy queries.
*
* See {@see WP_Tax_Query::__construct()} for information on tax query arguments.
*
* @since 3.1.0
* @access public
* @var array
*/
public $queries = array();
/**
* The relation between the queries. Can be one of 'AND' or 'OR'.
*
* @since 3.1.0
* @access public
* @var string
*/
public $relation;
/**
* Standard response when the query should not return any rows.
*
* @since 3.2.0
* @access private
* @var string
*/
private static $no_results = array( 'join' => array( '' ), 'where' => array( '0 = 1' ) );
/**
* A flat list of table aliases used in the JOIN clauses.
*
* @since 4.1.0
* @access protected
* @var array
*/
protected $table_aliases = array();
/**
* Terms and taxonomies fetched by this query.
*
* We store this data in a flat array because they are referenced in a
* number of places by {@see WP_Query}.
*
* @since 4.1.0
* @access public
* @var array
*/
public $queried_terms = array();
/**
* Database table that where the metadata's objects are stored (eg $wpdb->users).
*
* @since 4.1.0
* @access public
* @var string
*/
public $primary_table;
/**
* Column in 'primary_table' that represents the ID of the object.
*
* @since 4.1.0
* @access public
* @var string
*/
public $primary_id_column;
/**
* Constructor.
*
* @since 3.1.0
* @since 4.1.0 Added support for `$operator` 'NOT EXISTS' and 'EXISTS' values.
* @access public
*
* @param array $tax_query {
* Array of taxonomy query clauses.
*
* @type string $relation Optional. The MySQL keyword used to join
* the clauses of the query. Accepts 'AND', or 'OR'. Default 'AND'.
* @type array {
* Optional. An array of first-order clause parameters, or another fully-formed tax query.
*
* @type string $taxonomy Taxonomy being queried. Optional when field=term_taxonomy_id.
* @type string|int|array $terms Term or terms to filter by.
* @type string $field Field to match $terms against. Accepts 'term_id', 'slug',
* 'name', or 'term_taxonomy_id'. Default: 'term_id'.
* @type string $operator MySQL operator to be used with $terms in the WHERE clause.
* Accepts 'AND', 'IN', 'NOT IN', 'EXISTS', 'NOT EXISTS'.
* Default: 'IN'.
* @type bool $include_children Optional. Whether to include child terms.
* Requires a $taxonomy. Default: true.
* }
* }
*/
public function __construct( $tax_query ) {
if ( isset( $tax_query['relation'] ) ) {
$this->relation = $this->sanitize_relation( $tax_query['relation'] );
} else {
$this->relation = 'AND';
}
$this->queries = $this->sanitize_query( $tax_query );
}
/**
* Ensure the 'tax_query' argument passed to the class constructor is well-formed.
*
* Ensures that each query-level clause has a 'relation' key, and that
* each first-order clause contains all the necessary keys from `$defaults`.
*
* @since 4.1.0
* @access public
*
* @param array $queries Array of queries clauses.
* @return array Sanitized array of query clauses.
*/
public function sanitize_query( $queries ) {
$cleaned_query = array();
$defaults = array(
'taxonomy' => '',
'terms' => array(),
'field' => 'term_id',
'operator' => 'IN',
'include_children' => true,
);
foreach ( $queries as $key => $query ) {
if ( 'relation' === $key ) {
$cleaned_query['relation'] = $this->sanitize_relation( $query );
// First-order clause.
} elseif ( self::is_first_order_clause( $query ) ) {
$cleaned_clause = array_merge( $defaults, $query );
$cleaned_clause['terms'] = (array) $cleaned_clause['terms'];
$cleaned_query[] = $cleaned_clause;
/*
* Keep a copy of the clause in the flate
* $queried_terms array, for use in WP_Query.
*/
if ( ! empty( $cleaned_clause['taxonomy'] ) && 'NOT IN' !== $cleaned_clause['operator'] ) {
$taxonomy = $cleaned_clause['taxonomy'];
if ( ! isset( $this->queried_terms[ $taxonomy ] ) ) {
$this->queried_terms[ $taxonomy ] = array();
}
/*
* Backward compatibility: Only store the first
* 'terms' and 'field' found for a given taxonomy.
*/
if ( ! empty( $cleaned_clause['terms'] ) && ! isset( $this->queried_terms[ $taxonomy ]['terms'] ) ) {
$this->queried_terms[ $taxonomy ]['terms'] = $cleaned_clause['terms'];
}
if ( ! empty( $cleaned_clause['field'] ) && ! isset( $this->queried_terms[ $taxonomy ]['field'] ) ) {
$this->queried_terms[ $taxonomy ]['field'] = $cleaned_clause['field'];
}
}
// Otherwise, it's a nested query, so we recurse.
} elseif ( is_array( $query ) ) {
$cleaned_subquery = $this->sanitize_query( $query );
if ( ! empty( $cleaned_subquery ) ) {
// All queries with children must have a relation.
if ( ! isset( $cleaned_subquery['relation'] ) ) {
$cleaned_subquery['relation'] = 'AND';
}
$cleaned_query[] = $cleaned_subquery;
}
}
}
return $cleaned_query;
}
/**
* Sanitize a 'relation' operator.
*
* @since 4.1.0
* @access public
*
* @param string $relation Raw relation key from the query argument.
* @return string Sanitized relation ('AND' or 'OR').
*/
public function sanitize_relation( $relation ) {
if ( 'OR' === strtoupper( $relation ) ) {
return 'OR';
} else {
return 'AND';
}
}
/**
* Determine whether a clause is first-order.
*
* A "first-order" clause is one that contains any of the first-order
* clause keys ('terms', 'taxonomy', 'include_children', 'field',
* 'operator'). An empty clause also counts as a first-order clause,
* for backward compatibility. Any clause that doesn't meet this is
* determined, by process of elimination, to be a higher-order query.
*
* @since 4.1.0
* @access protected
*
* @param array $query Tax query arguments.
* @return bool Whether the query clause is a first-order clause.
*/
protected static function is_first_order_clause( $query ) {
return is_array( $query ) && ( empty( $query ) || array_key_exists( 'terms', $query ) || array_key_exists( 'taxonomy', $query ) || array_key_exists( 'include_children', $query ) || array_key_exists( 'field', $query ) || array_key_exists( 'operator', $query ) );
}
/**
* Generates SQL clauses to be appended to a main query.
*
* @since 3.1.0
* @access public
*
* @param string $primary_table Database table where the object being filtered is stored (eg wp_users).
* @param string $primary_id_column ID column for the filtered object in $primary_table.
* @return array {
* Array containing JOIN and WHERE SQL clauses to append to the main query.
*
* @type string $join SQL fragment to append to the main JOIN clause.
* @type string $where SQL fragment to append to the main WHERE clause.
* }
*/
public function get_sql( $primary_table, $primary_id_column ) {
$this->primary_table = $primary_table;
$this->primary_id_column = $primary_id_column;
return $this->get_sql_clauses();
}
/**
* Generate SQL clauses to be appended to a main query.
*
* Called by the public {@see WP_Tax_Query::get_sql()}, this method
* is abstracted out to maintain parity with the other Query classes.
*
* @since 4.1.0
* @access protected
*
* @return array {
* Array containing JOIN and WHERE SQL clauses to append to the main query.
*
* @type string $join SQL fragment to append to the main JOIN clause.
* @type string $where SQL fragment to append to the main WHERE clause.
* }
*/
protected function get_sql_clauses() {
/*
* $queries are passed by reference to get_sql_for_query() for recursion.
* To keep $this->queries unaltered, pass a copy.
*/
$queries = $this->queries;
$sql = $this->get_sql_for_query( $queries );
if ( ! empty( $sql['where'] ) ) {
$sql['where'] = ' AND ' . $sql['where'];
}
return $sql;
}
/**
* Generate SQL clauses for a single query array.
*
* If nested subqueries are found, this method recurses the tree to
* produce the properly nested SQL.
*
* @since 4.1.0
* @access protected
*
* @param array $query Query to parse, passed by reference.
* @param int $depth Optional. Number of tree levels deep we currently are.
* Used to calculate indentation. Default 0.
* @return array {
* Array containing JOIN and WHERE SQL clauses to append to a single query array.
*
* @type string $join SQL fragment to append to the main JOIN clause.
* @type string $where SQL fragment to append to the main WHERE clause.
* }
*/
protected function get_sql_for_query( &$query, $depth = 0 ) {
$sql_chunks = array(
'join' => array(),
'where' => array(),
);
$sql = array(
'join' => '',
'where' => '',
);
$indent = '';
for ( $i = 0; $i < $depth; $i++ ) {
$indent .= " ";
}
foreach ( $query as $key => &$clause ) {
if ( 'relation' === $key ) {
$relation = $query['relation'];
} elseif ( is_array( $clause ) ) {
// This is a first-order clause.
if ( $this->is_first_order_clause( $clause ) ) {
$clause_sql = $this->get_sql_for_clause( $clause, $query );
$where_count = count( $clause_sql['where'] );
if ( ! $where_count ) {
$sql_chunks['where'][] = '';
} elseif ( 1 === $where_count ) {
$sql_chunks['where'][] = $clause_sql['where'][0];
} else {
$sql_chunks['where'][] = '( ' . implode( ' AND ', $clause_sql['where'] ) . ' )';
}
$sql_chunks['join'] = array_merge( $sql_chunks['join'], $clause_sql['join'] );
// This is a subquery, so we recurse.
} else {
$clause_sql = $this->get_sql_for_query( $clause, $depth + 1 );
$sql_chunks['where'][] = $clause_sql['where'];
$sql_chunks['join'][] = $clause_sql['join'];
}
}
}
// Filter to remove empties.
$sql_chunks['join'] = array_filter( $sql_chunks['join'] );
$sql_chunks['where'] = array_filter( $sql_chunks['where'] );
if ( empty( $relation ) ) {
$relation = 'AND';
}
// Filter duplicate JOIN clauses and combine into a single string.
if ( ! empty( $sql_chunks['join'] ) ) {
$sql['join'] = implode( ' ', array_unique( $sql_chunks['join'] ) );
}
// Generate a single WHERE clause with proper brackets and indentation.
if ( ! empty( $sql_chunks['where'] ) ) {
$sql['where'] = '( ' . "\n " . $indent . implode( ' ' . "\n " . $indent . $relation . ' ' . "\n " . $indent, $sql_chunks['where'] ) . "\n" . $indent . ')';
}
return $sql;
}
/**
* Generate SQL JOIN and WHERE clauses for a "first-order" query clause.
*
* @since 4.1.0
* @access public
*
* @param array $clause Query clause, passed by reference
* @param array $parent_query Parent query array.
* @return array {
* Array containing JOIN and WHERE SQL clauses to append to a first-order query.
*
* @type string $join SQL fragment to append to the main JOIN clause.
* @type string $where SQL fragment to append to the main WHERE clause.
* }
*/
public function get_sql_for_clause( &$clause, $parent_query ) {
global $wpdb;
$sql = array(
'where' => array(),
'join' => array(),
);
$join = '';
$this->clean_query( $clause );
if ( is_wp_error( $clause ) ) {
return self::$no_results;
}
$terms = $clause['terms'];
$operator = strtoupper( $clause['operator'] );
if ( 'IN' == $operator ) {
if ( empty( $terms ) ) {
return self::$no_results;
}
$terms = implode( ',', $terms );
/*
* Before creating another table join, see if this clause has a
* sibling with an existing join that can be shared.
*/
$alias = $this->find_compatible_table_alias( $clause, $parent_query );
if ( false === $alias ) {
$i = count( $this->table_aliases );
$alias = $i ? 'tt' . $i : $wpdb->term_relationships;
// Store the alias as part of a flat array to build future iterators.
$this->table_aliases[] = $alias;
// Store the alias with this clause, so later siblings can use it.
$clause['alias'] = $alias;
$join .= " INNER JOIN $wpdb->term_relationships";
$join .= $i ? " AS $alias" : '';
$join .= " ON ($this->primary_table.$this->primary_id_column = $alias.object_id)";
}
$where = "$alias.term_taxonomy_id $operator ($terms)";
} elseif ( 'NOT IN' == $operator ) {
if ( empty( $terms ) ) {
return $sql;
}
$terms = implode( ',', $terms );
$where = "$this->primary_table.$this->primary_id_column NOT IN (
SELECT object_id
FROM $wpdb->term_relationships
WHERE term_taxonomy_id IN ($terms)
)";
} elseif ( 'AND' == $operator ) {
if ( empty( $terms ) ) {
return $sql;
}
$num_terms = count( $terms );
$terms = implode( ',', $terms );
$where = "(
SELECT COUNT(1)
FROM $wpdb->term_relationships
WHERE term_taxonomy_id IN ($terms)
AND object_id = $this->primary_table.$this->primary_id_column
) = $num_terms";
} elseif ( 'NOT EXISTS' === $operator || 'EXISTS' === $operator ) {
$where = $wpdb->prepare( "$operator (
SELECT 1
FROM $wpdb->term_relationships
INNER JOIN $wpdb->term_taxonomy
ON $wpdb->term_taxonomy.term_taxonomy_id = $wpdb->term_relationships.term_taxonomy_id
WHERE $wpdb->term_taxonomy.taxonomy = %s
AND $wpdb->term_relationships.object_id = $this->primary_table.$this->primary_id_column
)", $clause['taxonomy'] );
}
$sql['join'][] = $join;
$sql['where'][] = $where;
return $sql;
}
/**
* Identify an existing table alias that is compatible with the current query clause.
*
* We avoid unnecessary table joins by allowing each clause to look for
* an existing table alias that is compatible with the query that it
* needs to perform.
*
* An existing alias is compatible if (a) it is a sibling of `$clause`
* (ie, it's under the scope of the same relation), and (b) the combination
* of operator and relation between the clauses allows for a shared table
* join. In the case of {@see WP_Tax_Query}, this only applies to 'IN'
* clauses that are connected by the relation 'OR'.
*
* @since 4.1.0
* @access protected
*
* @param array $clause Query clause.
* @param array $parent_query Parent query of $clause.
* @return string|bool Table alias if found, otherwise false.
*/
protected function find_compatible_table_alias( $clause, $parent_query ) {
$alias = false;
// Sanity check. Only IN queries use the JOIN syntax .
if ( ! isset( $clause['operator'] ) || 'IN' !== $clause['operator'] ) {
return $alias;
}
// Since we're only checking IN queries, we're only concerned with OR relations.
if ( ! isset( $parent_query['relation'] ) || 'OR' !== $parent_query['relation'] ) {
return $alias;
}
$compatible_operators = array( 'IN' );
foreach ( $parent_query as $sibling ) {
if ( ! is_array( $sibling ) || ! $this->is_first_order_clause( $sibling ) ) {
continue;
}
if ( empty( $sibling['alias'] ) || empty( $sibling['operator'] ) ) {
continue;
}
// The sibling must both have compatible operator to share its alias.
if ( in_array( strtoupper( $sibling['operator'] ), $compatible_operators ) ) {
$alias = $sibling['alias'];
break;
}
}
return $alias;
}
/**
* Validates a single query.
*
* @since 3.2.0
* @access private
*
* @param array &$query The single query.
*/
private function clean_query( &$query ) {
if ( empty( $query['taxonomy'] ) ) {
if ( 'term_taxonomy_id' !== $query['field'] ) {
$query = new WP_Error( 'Invalid taxonomy' );
return;
}
// so long as there are shared terms, include_children requires that a taxonomy is set
$query['include_children'] = false;
} elseif ( ! taxonomy_exists( $query['taxonomy'] ) ) {
$query = new WP_Error( 'Invalid taxonomy' );
return;
}
$query['terms'] = array_unique( (array) $query['terms'] );
if ( is_taxonomy_hierarchical( $query['taxonomy'] ) && $query['include_children'] ) {
$this->transform_query( $query, 'term_id' );
if ( is_wp_error( $query ) )
return;
$children = array();
foreach ( $query['terms'] as $term ) {
$children = array_merge( $children, get_term_children( $term, $query['taxonomy'] ) );
$children[] = $term;
}
$query['terms'] = $children;
}
$this->transform_query( $query, 'term_taxonomy_id' );
}
/**
* Transforms a single query, from one field to another.
*
* @since 3.2.0
*
* @param array &$query The single query.
* @param string $resulting_field The resulting field. Accepts 'slug', 'name', 'term_taxonomy_id',
* or 'term_id'. Default: 'term_id'.
*/
public function transform_query( &$query, $resulting_field ) {
global $wpdb;
if ( empty( $query['terms'] ) )
return;
if ( $query['field'] == $resulting_field )
return;
$resulting_field = sanitize_key( $resulting_field );
switch ( $query['field'] ) {
case 'slug':
case 'name':
foreach ( $query['terms'] as &$term ) {
/*
* 0 is the $term_id parameter. We don't have a term ID yet, but it doesn't
* matter because `sanitize_term_field()` ignores the $term_id param when the
* context is 'db'.
*/
$term = "'" . esc_sql( sanitize_term_field( $query['field'], $term, 0, $query['taxonomy'], 'db' ) ) . "'";
}
$terms = implode( ",", $query['terms'] );
$terms = $wpdb->get_col( "
SELECT $wpdb->term_taxonomy.$resulting_field
FROM $wpdb->term_taxonomy
INNER JOIN $wpdb->terms USING (term_id)
WHERE taxonomy = '{$query['taxonomy']}'
AND $wpdb->terms.{$query['field']} IN ($terms)
" );
break;
case 'term_taxonomy_id':
$terms = implode( ',', array_map( 'intval', $query['terms'] ) );
$terms = $wpdb->get_col( "
SELECT $resulting_field
FROM $wpdb->term_taxonomy
WHERE term_taxonomy_id IN ($terms)
" );
break;
default:
$terms = implode( ',', array_map( 'intval', $query['terms'] ) );
$terms = $wpdb->get_col( "
SELECT $resulting_field
FROM $wpdb->term_taxonomy
WHERE taxonomy = '{$query['taxonomy']}'
AND term_id IN ($terms)
" );
}
if ( 'AND' == $query['operator'] && count( $terms ) < count( $query['terms'] ) ) {
$query = new WP_Error( 'Inexistent terms' );
return;
}
$query['terms'] = $terms;
$query['field'] = $resulting_field;
}
}
/**
* Get all Term data from database by Term ID.
*
* The usage of the get_term function is to apply filters to a term object. It
* is possible to get a term object from the database before applying the
* filters.
*
* $term ID must be part of $taxonomy, to get from the database. Failure, might
* be able to be captured by the hooks. Failure would be the same value as $wpdb
* returns for the get_row method.
*
* There are two hooks, one is specifically for each term, named 'get_term', and
* the second is for the taxonomy name, 'term_$taxonomy'. Both hooks gets the
* term object, and the taxonomy name as parameters. Both hooks are expected to
* return a Term object.
*
* 'get_term' hook - Takes two parameters the term Object and the taxonomy name.
* Must return term object. Used in get_term() as a catch-all filter for every
* $term.
*
* 'get_$taxonomy' hook - Takes two parameters the term Object and the taxonomy
* name. Must return term object. $taxonomy will be the taxonomy name, so for
* example, if 'category', it would be 'get_category' as the filter name. Useful
* for custom taxonomies or plugging into default taxonomies.
*
* @since 2.3.0
*
* @global wpdb $wpdb WordPress database abstraction object.
* @see sanitize_term_field() The $context param lists the available values for get_term_by() $filter param.
*
* @param int|object $term If integer, will get from database. If object will apply filters and return $term.
* @param string $taxonomy Taxonomy name that $term is part of.
* @param string $output Constant OBJECT, ARRAY_A, or ARRAY_N
* @param string $filter Optional, default is raw or no WordPress defined filter will applied.
* @return mixed|null|WP_Error Term Row from database. Will return null if $term is empty. If taxonomy does not
* exist then WP_Error will be returned.
*/
function get_term($term, $taxonomy, $output = OBJECT, $filter = 'raw') {
global $wpdb;
if ( empty($term) ) {
$error = new WP_Error('invalid_term', __('Empty Term'));
return $error;
}
if ( ! taxonomy_exists($taxonomy) ) {
$error = new WP_Error('invalid_taxonomy', __('Invalid taxonomy'));
return $error;
}
if ( is_object($term) && empty($term->filter) ) {
wp_cache_add( $term->term_id, $term, $taxonomy );
$_term = $term;
} else {
if ( is_object($term) )
$term = $term->term_id;
if ( !$term = (int) $term )
return null;
if ( ! $_term = wp_cache_get( $term, $taxonomy ) ) {
$_term = $wpdb->get_row( $wpdb->prepare( "SELECT t.*, tt.* FROM $wpdb->terms AS t INNER JOIN $wpdb->term_taxonomy AS tt ON t.term_id = tt.term_id WHERE tt.taxonomy = %s AND t.term_id = %d LIMIT 1", $taxonomy, $term) );
if ( ! $_term )
return null;
wp_cache_add( $term, $_term, $taxonomy );
}
}
/**
* Filter a term.
*
* @since 2.3.0
*
* @param int|object $_term Term object or ID.
* @param string $taxonomy The taxonomy slug.
*/
$_term = apply_filters( 'get_term', $_term, $taxonomy );
/**
* Filter a taxonomy.
*
* The dynamic portion of the filter name, `$taxonomy`, refers
* to the taxonomy slug.
*
* @since 2.3.0
*
* @param int|object $_term Term object or ID.
* @param string $taxonomy The taxonomy slug.
*/
$_term = apply_filters( "get_$taxonomy", $_term, $taxonomy );
$_term = sanitize_term($_term, $taxonomy, $filter);
if ( $output == OBJECT ) {
return $_term;
} elseif ( $output == ARRAY_A ) {
$__term = get_object_vars($_term);
return $__term;
} elseif ( $output == ARRAY_N ) {
$__term = array_values(get_object_vars($_term));
return $__term;
} else {
return $_term;
}
}
/**
* Get all Term data from database by Term field and data.
*
* Warning: $value is not escaped for 'name' $field. You must do it yourself, if
* required.
*
* The default $field is 'id', therefore it is possible to also use null for
* field, but not recommended that you do so.
*
* If $value does not exist, the return value will be false. If $taxonomy exists
* and $field and $value combinations exist, the Term will be returned.
*
* @since 2.3.0
*
* @global wpdb $wpdb WordPress database abstraction object.
* @see sanitize_term_field() The $context param lists the available values for get_term_by() $filter param.
*
* @param string $field Either 'slug', 'name', 'id' (term_id), or 'term_taxonomy_id'
* @param string|int $value Search for this term value
* @param string $taxonomy Taxonomy Name
* @param string $output Constant OBJECT, ARRAY_A, or ARRAY_N
* @param string $filter Optional, default is raw or no WordPress defined filter will applied.
* @return mixed Term Row from database. Will return false if $taxonomy does not exist or $term was not found.
*/
function get_term_by($field, $value, $taxonomy, $output = OBJECT, $filter = 'raw') {
global $wpdb;
if ( ! taxonomy_exists($taxonomy) )
return false;
if ( 'slug' == $field ) {
$field = 't.slug';
$value = sanitize_title($value);
if ( empty($value) )
return false;
} elseif ( 'name' == $field ) {
// Assume already escaped
$value = wp_unslash($value);
$field = 't.name';
} elseif ( 'term_taxonomy_id' == $field ) {
$value = (int) $value;
$field = 'tt.term_taxonomy_id';
} else {
$term = get_term( (int) $value, $taxonomy, $output, $filter );
if ( is_wp_error( $term ) )
$term = false;
return $term;
}
$term = $wpdb->get_row( $wpdb->prepare( "SELECT t.*, tt.* FROM $wpdb->terms AS t INNER JOIN $wpdb->term_taxonomy AS tt ON t.term_id = tt.term_id WHERE tt.taxonomy = %s AND $field = %s LIMIT 1", $taxonomy, $value ) );
if ( ! $term )
return false;
wp_cache_add( $term->term_id, $term, $taxonomy );
/** This filter is documented in wp-includes/taxonomy.php */
$term = apply_filters( 'get_term', $term, $taxonomy );
/** This filter is documented in wp-includes/taxonomy.php */
$term = apply_filters( "get_$taxonomy", $term, $taxonomy );
$term = sanitize_term($term, $taxonomy, $filter);
if ( $output == OBJECT ) {
return $term;
} elseif ( $output == ARRAY_A ) {
return get_object_vars($term);
} elseif ( $output == ARRAY_N ) {
return array_values(get_object_vars($term));
} else {
return $term;
}
}
/**
* Merge all term children into a single array of their IDs.
*
* This recursive function will merge all of the children of $term into the same
* array of term IDs. Only useful for taxonomies which are hierarchical.
*
* Will return an empty array if $term does not exist in $taxonomy.
*
* @since 2.3.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string $term_id ID of Term to get children
* @param string $taxonomy Taxonomy Name
* @return array|WP_Error List of Term IDs. WP_Error returned if $taxonomy does not exist
*/
function get_term_children( $term_id, $taxonomy ) {
if ( ! taxonomy_exists($taxonomy) )
return new WP_Error('invalid_taxonomy', __('Invalid taxonomy'));
$term_id = intval( $term_id );
$terms = _get_term_hierarchy($taxonomy);
if ( ! isset($terms[$term_id]) )
return array();
$children = $terms[$term_id];
foreach ( (array) $terms[$term_id] as $child ) {
if ( $term_id == $child ) {
continue;
}
if ( isset($terms[$child]) )
$children = array_merge($children, get_term_children($child, $taxonomy));
}
return $children;
}
/**
* Get sanitized Term field.
*
* Does checks for $term, based on the $taxonomy. The function is for contextual
* reasons and for simplicity of usage. See sanitize_term_field() for more
* information.
*
* @since 2.3.0
*
* @param string $field Term field to fetch
* @param int $term Term ID
* @param string $taxonomy Taxonomy Name
* @param string $context Optional, default is display. Look at sanitize_term_field() for available options.
* @return mixed Will return an empty string if $term is not an object or if $field is not set in $term.
*/
function get_term_field( $field, $term, $taxonomy, $context = 'display' ) {
$term = (int) $term;
$term = get_term( $term, $taxonomy );
if ( is_wp_error($term) )
return $term;
if ( !is_object($term) )
return '';
if ( !isset($term->$field) )
return '';
return sanitize_term_field($field, $term->$field, $term->term_id, $taxonomy, $context);
}
/**
* Sanitizes Term for editing.
*
* Return value is sanitize_term() and usage is for sanitizing the term for
* editing. Function is for contextual and simplicity.
*
* @since 2.3.0
*
* @param int|object $id Term ID or Object
* @param string $taxonomy Taxonomy Name
* @return mixed|null|WP_Error Will return empty string if $term is not an object.
*/
function get_term_to_edit( $id, $taxonomy ) {
$term = get_term( $id, $taxonomy );
if ( is_wp_error($term) )
return $term;
if ( !is_object($term) )
return '';
return sanitize_term($term, $taxonomy, 'edit');
}
/**
* Retrieve the terms in a given taxonomy or list of taxonomies.
*
* You can fully inject any customizations to the query before it is sent, as
* well as control the output with a filter.
*
* The 'get_terms' filter will be called when the cache has the term and will
* pass the found term along with the array of $taxonomies and array of $args.
* This filter is also called before the array of terms is passed and will pass
* the array of terms, along with the $taxonomies and $args.
*
* The 'list_terms_exclusions' filter passes the compiled exclusions along with
* the $args.
*
* The 'get_terms_orderby' filter passes the ORDER BY clause for the query
* along with the $args array.
*
* @since 2.3.0
* @since 4.2.0 Introduced 'name' and 'childless' parameters.
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string|array $taxonomies Taxonomy name or list of Taxonomy names.
* @param array|string $args {
* Optional. Array or string of arguments to get terms.
*
* @type string $orderby Field(s) to order terms by. Accepts term fields ('name', 'slug',
* 'term_group', 'term_id', 'id', 'description'), 'count' for term
* taxonomy count, 'include' to match the 'order' of the $include param,
* or 'none' to skip ORDER BY. Defaults to 'name'.
* @type string $order Whether to order terms in ascending or descending order.
* Accepts 'ASC' (ascending) or 'DESC' (descending).
* Default 'ASC'.
* @type bool|int $hide_empty Whether to hide terms not assigned to any posts. Accepts
* 1|true or 0|false. Default 1|true.
* @type array|string $include Array or comma/space-separated string of term ids to include.
* Default empty array.
* @type array|string $exclude Array or comma/space-separated string of term ids to exclude.
* If $include is non-empty, $exclude is ignored.
* Default empty array.
* @type array|string $exclude_tree Array or comma/space-separated string of term ids to exclude
* along with all of their descendant terms. If $include is
* non-empty, $exclude_tree is ignored. Default empty array.
* @type int|string $number Maximum number of terms to return. Accepts ''|0 (all) or any
* positive number. Default ''|0 (all).
* @type int $offset The number by which to offset the terms query. Default empty.
* @type string $fields Term fields to query for. Accepts 'all' (returns an array of
* term objects), 'ids' or 'names' (returns an array of integers
* or strings, respectively. Default 'all'.
* @type string|array $name Optional. Name or array of names to return term(s) for. Default empty.
* @type string|array $slug Optional. Slug or array of slugs to return term(s) for. Default empty.
* @type bool $hierarchical Whether to include terms that have non-empty descendants (even
* if $hide_empty is set to true). Default true.
* @type string $search Search criteria to match terms. Will be SQL-formatted with
* wildcards before and after. Default empty.
* @type string $name__like Retrieve terms with criteria by which a term is LIKE $name__like.
* Default empty.
* @type string $description__like Retrieve terms where the description is LIKE $description__like.
* Default empty.
* @type bool $pad_counts Whether to pad the quantity of a term's children in the quantity
* of each term's "count" object variable. Default false.
* @type string $get Whether to return terms regardless of ancestry or whether the terms
* are empty. Accepts 'all' or empty (disabled). Default empty.
* @type int $child_of Term ID to retrieve child terms of. If multiple taxonomies
* are passed, $child_of is ignored. Default 0.
* @type int|string $parent Parent term ID to retrieve direct-child terms of. Default empty.
* @type bool $childless True to limit results to terms that have no children. This parameter has
* no effect on non-hierarchical taxonomies. Default false.
* @type string $cache_domain Unique cache key to be produced when this query is stored in an
* object cache. Default is 'core'.
* }
* @return array|WP_Error List of Term Objects and their children. Will return WP_Error, if any of $taxonomies
* do not exist.
*/
function get_terms( $taxonomies, $args = '' ) {
global $wpdb;
$empty_array = array();
$single_taxonomy = ! is_array( $taxonomies ) || 1 === count( $taxonomies );
if ( ! is_array( $taxonomies ) ) {
$taxonomies = array( $taxonomies );
}
foreach ( $taxonomies as $taxonomy ) {
if ( ! taxonomy_exists($taxonomy) ) {
$error = new WP_Error('invalid_taxonomy', __('Invalid taxonomy'));
return $error;
}
}
$defaults = array('orderby' => 'name', 'order' => 'ASC',
'hide_empty' => true, 'exclude' => array(), 'exclude_tree' => array(), 'include' => array(),
'number' => '', 'fields' => 'all', 'name' => '', 'slug' => '', 'parent' => '', 'childless' => false,
'hierarchical' => true, 'child_of' => 0, 'get' => '', 'name__like' => '', 'description__like' => '',
'pad_counts' => false, 'offset' => '', 'search' => '', 'cache_domain' => 'core' );
$args = wp_parse_args( $args, $defaults );
$args['number'] = absint( $args['number'] );
$args['offset'] = absint( $args['offset'] );
// Save queries by not crawling the tree in the case of multiple taxes or a flat tax.
$has_hierarchical_tax = false;
foreach ( $taxonomies as $_tax ) {
if ( is_taxonomy_hierarchical( $_tax ) ) {
$has_hierarchical_tax = true;
}
}
if ( ! $has_hierarchical_tax ) {
$args['hierarchical'] = false;
$args['pad_counts'] = false;
}
// 'parent' overrides 'child_of'.
if ( 0 < intval( $args['parent'] ) ) {
$args['child_of'] = false;
}
if ( 'all' == $args['get'] ) {
$args['childless'] = false;
$args['child_of'] = 0;
$args['hide_empty'] = 0;
$args['hierarchical'] = false;
$args['pad_counts'] = false;
}
/**
* Filter the terms query arguments.
*
* @since 3.1.0
*
* @param array $args An array of arguments.
* @param array $taxonomies An array of taxonomies.
*/
$args = apply_filters( 'get_terms_args', $args, $taxonomies );
// Avoid the query if the queried parent/child_of term has no descendants.
$child_of = $args['child_of'];
$parent = $args['parent'];
if ( $child_of ) {
$_parent = $child_of;
} elseif ( $parent ) {
$_parent = $parent;
} else {
$_parent = false;
}
if ( $_parent ) {
$in_hierarchy = false;
foreach ( $taxonomies as $_tax ) {
$hierarchy = _get_term_hierarchy( $_tax );
if ( isset( $hierarchy[ $_parent ] ) ) {
$in_hierarchy = true;
}
}
if ( ! $in_hierarchy ) {
return $empty_array;
}
}
// $args can be whatever, only use the args defined in defaults to compute the key
$filter_key = ( has_filter('list_terms_exclusions') ) ? serialize($GLOBALS['wp_filter']['list_terms_exclusions']) : '';
$key = md5( serialize( wp_array_slice_assoc( $args, array_keys( $defaults ) ) ) . serialize( $taxonomies ) . $filter_key );
$last_changed = wp_cache_get( 'last_changed', 'terms' );
if ( ! $last_changed ) {
$last_changed = microtime();
wp_cache_set( 'last_changed', $last_changed, 'terms' );
}
$cache_key = "get_terms:$key:$last_changed";
$cache = wp_cache_get( $cache_key, 'terms' );
if ( false !== $cache ) {
/**
* Filter the given taxonomy's terms cache.
*
* @since 2.3.0
*
* @param array $cache Cached array of terms for the given taxonomy.
* @param array $taxonomies An array of taxonomies.
* @param array $args An array of arguments to get terms.
*/
$cache = apply_filters( 'get_terms', $cache, $taxonomies, $args );
return $cache;
}
$_orderby = strtolower( $args['orderby'] );
if ( 'count' == $_orderby ) {
$orderby = 'tt.count';
} elseif ( 'name' == $_orderby ) {
$orderby = 't.name';
} elseif ( 'slug' == $_orderby ) {
$orderby = 't.slug';
} elseif ( 'include' == $_orderby && ! empty( $args['include'] ) ) {
$include = implode( ',', array_map( 'absint', $args['include'] ) );
$orderby = "FIELD( t.term_id, $include )";
} elseif ( 'term_group' == $_orderby ) {
$orderby = 't.term_group';
} elseif ( 'description' == $_orderby ) {
$orderby = 'tt.description';
} elseif ( 'none' == $_orderby ) {
$orderby = '';
} elseif ( empty($_orderby) || 'id' == $_orderby ) {
$orderby = 't.term_id';
} else {
$orderby = 't.name';
}
/**
* Filter the ORDERBY clause of the terms query.
*
* @since 2.8.0
*
* @param string $orderby ORDERBY clause of the terms query.
* @param array $args An array of terms query arguments.
* @param array $taxonomies An array of taxonomies.
*/
$orderby = apply_filters( 'get_terms_orderby', $orderby, $args, $taxonomies );
$order = strtoupper( $args['order'] );
if ( ! empty( $orderby ) ) {
$orderby = "ORDER BY $orderby";
} else {
$order = '';
}
if ( '' !== $order && ! in_array( $order, array( 'ASC', 'DESC' ) ) ) {
$order = 'ASC';
}
$where = "tt.taxonomy IN ('" . implode("', '", $taxonomies) . "')";
$exclude = $args['exclude'];
$exclude_tree = $args['exclude_tree'];
$include = $args['include'];
$inclusions = '';
if ( ! empty( $include ) ) {
$exclude = '';
$exclude_tree = '';
$inclusions = implode( ',', wp_parse_id_list( $include ) );
}
if ( ! empty( $inclusions ) ) {
$inclusions = ' AND t.term_id IN ( ' . $inclusions . ' )';
$where .= $inclusions;
}
$exclusions = array();
if ( ! empty( $exclude_tree ) ) {
$exclude_tree = wp_parse_id_list( $exclude_tree );
$excluded_children = $exclude_tree;
foreach ( $exclude_tree as $extrunk ) {
$excluded_children = array_merge(
$excluded_children,
(array) get_terms( $taxonomies[0], array( 'child_of' => intval( $extrunk ), 'fields' => 'ids', 'hide_empty' => 0 ) )
);
}
$exclusions = array_merge( $excluded_children, $exclusions );
}
if ( ! empty( $exclude ) ) {
$exclusions = array_merge( wp_parse_id_list( $exclude ), $exclusions );
}
// 'childless' terms are those without an entry in the flattened term hierarchy.
$childless = (bool) $args['childless'];
if ( $childless ) {
foreach ( $taxonomies as $_tax ) {
$term_hierarchy = _get_term_hierarchy( $_tax );
$exclusions = array_merge( array_keys( $term_hierarchy ), $exclusions );
}
}
if ( ! empty( $exclusions ) ) {
$exclusions = ' AND t.term_id NOT IN (' . implode( ',', array_map( 'intval', $exclusions ) ) . ')';
} else {
$exclusions = '';
}
/**
* Filter the terms to exclude from the terms query.
*
* @since 2.3.0
*
* @param string $exclusions NOT IN clause of the terms query.
* @param array $args An array of terms query arguments.
* @param array $taxonomies An array of taxonomies.
*/
$exclusions = apply_filters( 'list_terms_exclusions', $exclusions, $args, $taxonomies );
if ( ! empty( $exclusions ) ) {
$where .= $exclusions;
}
if ( ! empty( $args['name'] ) ) {
if ( is_array( $args['name'] ) ) {
$name = array_map( 'sanitize_text_field', $args['name'] );
$where .= " AND t.name IN ('" . implode( "', '", array_map( 'esc_sql', $name ) ) . "')";
} else {
$name = sanitize_text_field( $args['name'] );
$where .= $wpdb->prepare( " AND t.name = %s", $name );
}
}
if ( ! empty( $args['slug'] ) ) {
if ( is_array( $args['slug'] ) ) {
$slug = array_map( 'sanitize_title', $args['slug'] );
$where .= " AND t.slug IN ('" . implode( "', '", $slug ) . "')";
} else {
$slug = sanitize_title( $args['slug'] );
$where .= " AND t.slug = '$slug'";
}
}
if ( ! empty( $args['name__like'] ) ) {
$where .= $wpdb->prepare( " AND t.name LIKE %s", '%' . $wpdb->esc_like( $args['name__like'] ) . '%' );
}
if ( ! empty( $args['description__like'] ) ) {
$where .= $wpdb->prepare( " AND tt.description LIKE %s", '%' . $wpdb->esc_like( $args['description__like'] ) . '%' );
}
if ( '' !== $parent ) {
$parent = (int) $parent;
$where .= " AND tt.parent = '$parent'";
}
$hierarchical = $args['hierarchical'];
if ( 'count' == $args['fields'] ) {
$hierarchical = false;
}
if ( $args['hide_empty'] && !$hierarchical ) {
$where .= ' AND tt.count > 0';
}
$number = $args['number'];
$offset = $args['offset'];
// don't limit the query results when we have to descend the family tree
if ( $number && ! $hierarchical && ! $child_of && '' === $parent ) {
if ( $offset ) {
$limits = 'LIMIT ' . $offset . ',' . $number;
} else {
$limits = 'LIMIT ' . $number;
}
} else {
$limits = '';
}
if ( ! empty( $args['search'] ) ) {
$like = '%' . $wpdb->esc_like( $args['search'] ) . '%';
$where .= $wpdb->prepare( ' AND ((t.name LIKE %s) OR (t.slug LIKE %s))', $like, $like );
}
$selects = array();
switch ( $args['fields'] ) {
case 'all':
$selects = array( 't.*', 'tt.*' );
break;
case 'ids':
case 'id=>parent':
$selects = array( 't.term_id', 'tt.parent', 'tt.count', 'tt.taxonomy' );
break;
case 'names':
$selects = array( 't.term_id', 'tt.parent', 'tt.count', 't.name', 'tt.taxonomy' );
break;
case 'count':
$orderby = '';
$order = '';
$selects = array( 'COUNT(*)' );
break;
case 'id=>name':
$selects = array( 't.term_id', 't.name', 'tt.count', 'tt.taxonomy' );
break;
case 'id=>slug':
$selects = array( 't.term_id', 't.slug', 'tt.count', 'tt.taxonomy' );
break;
}
$_fields = $args['fields'];
/**
* Filter the fields to select in the terms query.
*
* Field lists modified using this filter will only modify the term fields returned
* by the function when the `$fields` parameter set to 'count' or 'all'. In all other
* cases, the term fields in the results array will be determined by the `$fields`
* parameter alone.
*
* Use of this filter can result in unpredictable behavior, and is not recommended.
*
* @since 2.8.0
*
* @param array $selects An array of fields to select for the terms query.
* @param array $args An array of term query arguments.
* @param array $taxonomies An array of taxonomies.
*/
$fields = implode( ', ', apply_filters( 'get_terms_fields', $selects, $args, $taxonomies ) );
$join = "INNER JOIN $wpdb->term_taxonomy AS tt ON t.term_id = tt.term_id";
$pieces = array( 'fields', 'join', 'where', 'orderby', 'order', 'limits' );
/**
* Filter the terms query SQL clauses.
*
* @since 3.1.0
*
* @param array $pieces Terms query SQL clauses.
* @param array $taxonomies An array of taxonomies.
* @param array $args An array of terms query arguments.
*/
$clauses = apply_filters( 'terms_clauses', compact( $pieces ), $taxonomies, $args );
$fields = isset( $clauses[ 'fields' ] ) ? $clauses[ 'fields' ] : '';
$join = isset( $clauses[ 'join' ] ) ? $clauses[ 'join' ] : '';
$where = isset( $clauses[ 'where' ] ) ? $clauses[ 'where' ] : '';
$orderby = isset( $clauses[ 'orderby' ] ) ? $clauses[ 'orderby' ] : '';
$order = isset( $clauses[ 'order' ] ) ? $clauses[ 'order' ] : '';
$limits = isset( $clauses[ 'limits' ] ) ? $clauses[ 'limits' ] : '';
$query = "SELECT $fields FROM $wpdb->terms AS t $join WHERE $where $orderby $order $limits";
if ( 'count' == $_fields ) {
$term_count = $wpdb->get_var($query);
return $term_count;
}
$terms = $wpdb->get_results($query);
if ( 'all' == $_fields ) {
update_term_cache( $terms );
}
if ( empty($terms) ) {
wp_cache_add( $cache_key, array(), 'terms', DAY_IN_SECONDS );
/** This filter is documented in wp-includes/taxonomy.php */
$terms = apply_filters( 'get_terms', array(), $taxonomies, $args );
return $terms;
}
if ( $child_of ) {
foreach ( $taxonomies as $_tax ) {
$children = _get_term_hierarchy( $_tax );
if ( ! empty( $children ) ) {
$terms = _get_term_children( $child_of, $terms, $_tax );
}
}
}
// Update term counts to include children.
if ( $args['pad_counts'] && 'all' == $_fields ) {
foreach ( $taxonomies as $_tax ) {
_pad_term_counts( $terms, $_tax );
}
}
// Make sure we show empty categories that have children.
if ( $hierarchical && $args['hide_empty'] && is_array( $terms ) ) {
foreach ( $terms as $k => $term ) {
if ( ! $term->count ) {
$children = get_term_children( $term->term_id, $term->taxonomy );
if ( is_array( $children ) ) {
foreach ( $children as $child_id ) {
$child = get_term( $child_id, $term->taxonomy );
if ( $child->count ) {
continue 2;
}
}
}
// It really is empty
unset($terms[$k]);
}
}
}
$_terms = array();
if ( 'id=>parent' == $_fields ) {
foreach ( $terms as $term ) {
$_terms[ $term->term_id ] = $term->parent;
}
} elseif ( 'ids' == $_fields ) {
foreach ( $terms as $term ) {
$_terms[] = $term->term_id;
}
} elseif ( 'names' == $_fields ) {
foreach ( $terms as $term ) {
$_terms[] = $term->name;
}
} elseif ( 'id=>name' == $_fields ) {
foreach ( $terms as $term ) {
$_terms[ $term->term_id ] = $term->name;
}
} elseif ( 'id=>slug' == $_fields ) {
foreach ( $terms as $term ) {
$_terms[ $term->term_id ] = $term->slug;
}
}
if ( ! empty( $_terms ) ) {
$terms = $_terms;
}
if ( $number && is_array( $terms ) && count( $terms ) > $number ) {
$terms = array_slice( $terms, $offset, $number );
}
wp_cache_add( $cache_key, $terms, 'terms', DAY_IN_SECONDS );
/** This filter is documented in wp-includes/taxonomy */
$terms = apply_filters( 'get_terms', $terms, $taxonomies, $args );
return $terms;
}
/**
* Check if Term exists.
*
* Formerly is_term(), introduced in 2.3.0.
*
* @since 3.0.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param int|string $term The term to check
* @param string $taxonomy The taxonomy name to use
* @param int $parent Optional. ID of parent term under which to confine the exists search.
* @return mixed Returns null if the term does not exist. Returns the term ID
* if no taxonomy is specified and the term ID exists. Returns
* an array of the term ID and the term taxonomy ID the taxonomy
* is specified and the pairing exists.
*/
function term_exists( $term, $taxonomy = '', $parent = null ) {
global $wpdb;
$select = "SELECT term_id FROM $wpdb->terms as t WHERE ";
$tax_select = "SELECT tt.term_id, tt.term_taxonomy_id FROM $wpdb->terms AS t INNER JOIN $wpdb->term_taxonomy as tt ON tt.term_id = t.term_id WHERE ";
if ( is_int($term) ) {
if ( 0 == $term )
return 0;
$where = 't.term_id = %d';
if ( !empty($taxonomy) )
return $wpdb->get_row( $wpdb->prepare( $tax_select . $where . " AND tt.taxonomy = %s", $term, $taxonomy ), ARRAY_A );
else
return $wpdb->get_var( $wpdb->prepare( $select . $where, $term ) );
}
$term = trim( wp_unslash( $term ) );
$slug = sanitize_title( $term );
$where = 't.slug = %s';
$else_where = 't.name = %s';
$where_fields = array($slug);
$else_where_fields = array($term);
$orderby = 'ORDER BY t.term_id ASC';
$limit = 'LIMIT 1';
if ( !empty($taxonomy) ) {
if ( is_numeric( $parent ) ) {
$parent = (int) $parent;
$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 $orderby $limit", $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 $orderby $limit", $else_where_fields), ARRAY_A);
}
if ( $result = $wpdb->get_var( $wpdb->prepare("SELECT term_id FROM $wpdb->terms as t WHERE $where $orderby $limit", $where_fields) ) )
return $result;
return $wpdb->get_var( $wpdb->prepare("SELECT term_id FROM $wpdb->terms as t WHERE $else_where $orderby $limit", $else_where_fields) );
}
/**
* Check if a term is an ancestor of another term.
*
* You can use either an id or the term object for both parameters.
*
* @since 3.4.0
*
* @param int|object $term1 ID or object to check if this is the parent term.
* @param int|object $term2 The child term.
* @param string $taxonomy Taxonomy name that $term1 and $term2 belong to.
* @return bool Whether $term2 is child of $term1
*/
function term_is_ancestor_of( $term1, $term2, $taxonomy ) {
if ( ! isset( $term1->term_id ) )
$term1 = get_term( $term1, $taxonomy );
if ( ! isset( $term2->parent ) )
$term2 = get_term( $term2, $taxonomy );
if ( empty( $term1->term_id ) || empty( $term2->parent ) )
return false;
if ( $term2->parent == $term1->term_id )
return true;
return term_is_ancestor_of( $term1, get_term( $term2->parent, $taxonomy ), $taxonomy );
}
/**
* Sanitize Term all fields.
*
* Relies on sanitize_term_field() to sanitize the term. The difference is that
* this function will sanitize <strong>all</strong> fields. The context is based
* on sanitize_term_field().
*
* The $term is expected to be either an array or an object.
*
* @since 2.3.0
*
* @param array|object $term The term to check
* @param string $taxonomy The taxonomy name to use
* @param string $context Default is 'display'.
* @return array|object Term with all fields sanitized
*/
function sanitize_term($term, $taxonomy, $context = 'display') {
$fields = array( 'term_id', 'name', 'description', 'slug', 'count', 'parent', 'term_group', 'term_taxonomy_id', 'object_id' );
$do_object = is_object( $term );
$term_id = $do_object ? $term->term_id : (isset($term['term_id']) ? $term['term_id'] : 0);
foreach ( (array) $fields as $field ) {
if ( $do_object ) {
if ( isset($term->$field) )
$term->$field = sanitize_term_field($field, $term->$field, $term_id, $taxonomy, $context);
} else {
if ( isset($term[$field]) )
$term[$field] = sanitize_term_field($field, $term[$field], $term_id, $taxonomy, $context);
}
}
if ( $do_object )
$term->filter = $context;
else
$term['filter'] = $context;
return $term;
}
/**
* Cleanse the field value in the term based on the context.
*
* Passing a term field value through the function should be assumed to have
* cleansed the value for whatever context the term field is going to be used.
*
* If no context or an unsupported context is given, then default filters will
* be applied.
*
* There are enough filters for each context to support a custom filtering
* without creating your own filter function. Simply create a function that
* hooks into the filter you need.
*
* @since 2.3.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string $field Term field to sanitize
* @param string $value Search for this term value
* @param int $term_id Term ID
* @param string $taxonomy Taxonomy Name
* @param string $context Either edit, db, display, attribute, or js.
* @return mixed sanitized field
*/
function sanitize_term_field($field, $value, $term_id, $taxonomy, $context) {
$int_fields = array( 'parent', 'term_id', 'count', 'term_group', 'term_taxonomy_id', 'object_id' );
if ( in_array( $field, $int_fields ) ) {
$value = (int) $value;
if ( $value < 0 )
$value = 0;
}
if ( 'raw' == $context )
return $value;
if ( 'edit' == $context ) {
/**
* Filter a term field to edit before it is sanitized.
*
* The dynamic portion of the filter name, `$field`, refers to the term field.
*
* @since 2.3.0
*
* @param mixed $value Value of the term field.
* @param int $term_id Term ID.
* @param string $taxonomy Taxonomy slug.
*/
$value = apply_filters( "edit_term_{$field}", $value, $term_id, $taxonomy );
/**
* Filter the taxonomy field to edit before it is sanitized.
*
* The dynamic portions of the filter name, `$taxonomy` and `$field`, refer
* to the taxonomy slug and taxonomy field, respectively.
*
* @since 2.3.0
*
* @param mixed $value Value of the taxonomy field to edit.
* @param int $term_id Term ID.
*/
$value = apply_filters( "edit_{$taxonomy}_{$field}", $value, $term_id );
if ( 'description' == $field )
$value = esc_html($value); // textarea_escaped
else
$value = esc_attr($value);
} elseif ( 'db' == $context ) {
/**
* Filter a term field value before it is sanitized.
*
* The dynamic portion of the filter name, `$field`, refers to the term field.
*
* @since 2.3.0
*
* @param mixed $value Value of the term field.
* @param string $taxonomy Taxonomy slug.
*/
$value = apply_filters( "pre_term_{$field}", $value, $taxonomy );
/**
* Filter a taxonomy field before it is sanitized.
*
* The dynamic portions of the filter name, `$taxonomy` and `$field`, refer
* to the taxonomy slug and field name, respectively.
*
* @since 2.3.0
*
* @param mixed $value Value of the taxonomy field.
*/
$value = apply_filters( "pre_{$taxonomy}_{$field}", $value );
// Back compat filters
if ( 'slug' == $field ) {
/**
* Filter the category nicename before it is sanitized.
*
* Use the pre_{$taxonomy}_{$field} hook instead.
*
* @since 2.0.3
*
* @param string $value The category nicename.
*/
$value = apply_filters( 'pre_category_nicename', $value );
}
} elseif ( 'rss' == $context ) {
/**
* Filter the term field for use in RSS.
*
* The dynamic portion of the filter name, `$field`, refers to the term field.
*
* @since 2.3.0
*
* @param mixed $value Value of the term field.
* @param string $taxonomy Taxonomy slug.
*/
$value = apply_filters( "term_{$field}_rss", $value, $taxonomy );
/**
* Filter the taxonomy field for use in RSS.
*
* The dynamic portions of the hook name, `$taxonomy`, and $field, refer
* to the taxonomy slug and field name, respectively.
*
* @since 2.3.0
*
* @param mixed $value Value of the taxonomy field.
*/
$value = apply_filters( "{$taxonomy}_{$field}_rss", $value );
} else {
// Use display filters by default.
/**
* Filter the term field sanitized for display.
*
* The dynamic portion of the filter name, `$field`, refers to the term field name.
*
* @since 2.3.0
*
* @param mixed $value Value of the term field.
* @param int $term_id Term ID.
* @param string $taxonomy Taxonomy slug.
* @param string $context Context to retrieve the term field value.
*/
$value = apply_filters( "term_{$field}", $value, $term_id, $taxonomy, $context );
/**
* Filter the taxonomy field sanitized for display.
*
* The dynamic portions of the filter name, `$taxonomy`, and $field, refer
* to the taxonomy slug and taxonomy field, respectively.
*
* @since 2.3.0
*
* @param mixed $value Value of the taxonomy field.
* @param int $term_id Term ID.
* @param string $context Context to retrieve the taxonomy field value.
*/
$value = apply_filters( "{$taxonomy}_{$field}", $value, $term_id, $context );
}
if ( 'attribute' == $context ) {
$value = esc_attr($value);
} elseif ( 'js' == $context ) {
$value = esc_js($value);
}
return $value;
}
/**
* Count how many terms are in Taxonomy.
*
* Default $args is 'hide_empty' which can be 'hide_empty=true' or array('hide_empty' => true).
*
* @since 2.3.0
*
* @param string $taxonomy Taxonomy name
* @param array|string $args Overwrite defaults. See get_terms()
* @return int|WP_Error How many terms are in $taxonomy. WP_Error if $taxonomy does not exist.
*/
function wp_count_terms( $taxonomy, $args = array() ) {
$defaults = array('hide_empty' => false);
$args = wp_parse_args($args, $defaults);
// backwards compatibility
if ( isset($args['ignore_empty']) ) {
$args['hide_empty'] = $args['ignore_empty'];
unset($args['ignore_empty']);
}
$args['fields'] = 'count';
return get_terms($taxonomy, $args);
}
/**
* Will unlink the object from the taxonomy or taxonomies.
*
* Will remove all relationships between the object and any terms in
* a particular taxonomy or taxonomies. Does not remove the term or
* taxonomy itself.
*
* @since 2.3.0
*
* @param int $object_id The term Object Id that refers to the term
* @param string|array $taxonomies List of Taxonomy Names or single Taxonomy name.
*/
function wp_delete_object_term_relationships( $object_id, $taxonomies ) {
$object_id = (int) $object_id;
if ( !is_array($taxonomies) )
$taxonomies = array($taxonomies);
foreach ( (array) $taxonomies as $taxonomy ) {
$term_ids = wp_get_object_terms( $object_id, $taxonomy, array( 'fields' => 'ids' ) );
$term_ids = array_map( 'intval', $term_ids );
wp_remove_object_terms( $object_id, $term_ids, $taxonomy );
}
}
/**
* Removes a term from the database.
*
* If the term is a parent of other terms, then the children will be updated to
* that term's parent.
*
* The $args 'default' will only override the terms found, if there is only one
* term found. Any other and the found terms are used.
*
* The $args 'force_default' will force the term supplied as default to be
* assigned even if the object was not going to be termless
*
* @since 2.3.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param int $term Term ID
* @param string $taxonomy Taxonomy Name
* @param array|string $args Optional. Change 'default' term id and override found term ids.
* @return bool|WP_Error Returns false if not term; true if completes delete action.
*/
function wp_delete_term( $term, $taxonomy, $args = array() ) {
global $wpdb;
$term = (int) $term;
if ( ! $ids = term_exists($term, $taxonomy) )
return false;
if ( is_wp_error( $ids ) )
return $ids;
$tt_id = $ids['term_taxonomy_id'];
$defaults = array();
if ( 'category' == $taxonomy ) {
$defaults['default'] = get_option( 'default_category' );
if ( $defaults['default'] == $term )
return 0; // Don't delete the default category
}
$args = wp_parse_args($args, $defaults);
if ( isset( $args['default'] ) ) {
$default = (int) $args['default'];
if ( ! term_exists( $default, $taxonomy ) ) {
unset( $default );
}
}
if ( isset( $args['force_default'] ) ) {
$force_default = $args['force_default'];
}
/**
* Fires when deleting a term, before any modifications are made to posts or terms.
*
* @since 4.1.0
*
* @param int $term Term ID.
* @param string $taxonomy Taxonomy Name.
*/
do_action( 'pre_delete_term', $term, $taxonomy );
// Update children to point to new parent
if ( is_taxonomy_hierarchical($taxonomy) ) {
$term_obj = get_term($term, $taxonomy);
if ( is_wp_error( $term_obj ) )
return $term_obj;
$parent = $term_obj->parent;
$edit_ids = $wpdb->get_results( "SELECT term_id, term_taxonomy_id FROM $wpdb->term_taxonomy WHERE `parent` = " . (int)$term_obj->term_id );
$edit_tt_ids = wp_list_pluck( $edit_ids, 'term_taxonomy_id' );
/**
* Fires immediately before a term to delete's children are reassigned a parent.
*
* @since 2.9.0
*
* @param array $edit_tt_ids An array of term taxonomy IDs for the given term.
*/
do_action( 'edit_term_taxonomies', $edit_tt_ids );
$wpdb->update( $wpdb->term_taxonomy, compact( 'parent' ), array( 'parent' => $term_obj->term_id) + compact( 'taxonomy' ) );
// Clean the cache for all child terms.
$edit_term_ids = wp_list_pluck( $edit_ids, 'term_id' );
clean_term_cache( $edit_term_ids, $taxonomy );
/**
* Fires immediately after a term to delete's children are reassigned a parent.
*
* @since 2.9.0
*
* @param array $edit_tt_ids An array of term taxonomy IDs for the given term.
*/
do_action( 'edited_term_taxonomies', $edit_tt_ids );
}
$objects = $wpdb->get_col( $wpdb->prepare( "SELECT object_id FROM $wpdb->term_relationships WHERE term_taxonomy_id = %d", $tt_id ) );
foreach ( (array) $objects as $object ) {
$terms = wp_get_object_terms($object, $taxonomy, array('fields' => 'ids', 'orderby' => 'none'));
if ( 1 == count($terms) && isset($default) ) {
$terms = array($default);
} else {
$terms = array_diff($terms, array($term));
if (isset($default) && isset($force_default) && $force_default)
$terms = array_merge($terms, array($default));
}
$terms = array_map('intval', $terms);
wp_set_object_terms($object, $terms, $taxonomy);
}
// Clean the relationship caches for all object types using this term
$tax_object = get_taxonomy( $taxonomy );
foreach ( $tax_object->object_type as $object_type )
clean_object_term_cache( $objects, $object_type );
// Get the object before deletion so we can pass to actions below
$deleted_term = get_term( $term, $taxonomy );
/**
* Fires immediately before a term taxonomy ID is deleted.
*
* @since 2.9.0
*
* @param int $tt_id Term taxonomy ID.
*/
do_action( 'delete_term_taxonomy', $tt_id );
$wpdb->delete( $wpdb->term_taxonomy, array( 'term_taxonomy_id' => $tt_id ) );
/**
* Fires immediately after a term taxonomy ID is deleted.
*
* @since 2.9.0
*
* @param int $tt_id Term taxonomy ID.
*/
do_action( 'deleted_term_taxonomy', $tt_id );
// Delete the term if no taxonomies use it.
if ( !$wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->term_taxonomy WHERE term_id = %d", $term) ) )
$wpdb->delete( $wpdb->terms, array( 'term_id' => $term ) );
clean_term_cache($term, $taxonomy);
/**
* Fires after a term is deleted from the database and the cache is cleaned.
*
* @since 2.5.0
*
* @param int $term Term ID.
* @param int $tt_id Term taxonomy ID.
* @param string $taxonomy Taxonomy slug.
* @param mixed $deleted_term Copy of the already-deleted term, in the form specified
* by the parent function. WP_Error otherwise.
*/
do_action( 'delete_term', $term, $tt_id, $taxonomy, $deleted_term );
/**
* Fires after a term in a specific taxonomy is deleted.
*
* The dynamic portion of the hook name, `$taxonomy`, refers to the specific
* taxonomy the term belonged to.
*
* @since 2.3.0
*
* @param int $term Term ID.
* @param int $tt_id Term taxonomy ID.
* @param mixed $deleted_term Copy of the already-deleted term, in the form specified
* by the parent function. {@see WP_Error} otherwise.
*/
do_action( "delete_$taxonomy", $term, $tt_id, $deleted_term );
return true;
}
/**
* Deletes one existing category.
*
* @since 2.0.0
*
* @param int $cat_ID
* @return mixed Returns true if completes delete action; false if term doesn't exist;
* Zero on attempted deletion of default Category; WP_Error object is also a possibility.
*/
function wp_delete_category( $cat_ID ) {
return wp_delete_term( $cat_ID, 'category' );
}
/**
* Retrieves the terms associated with the given object(s), in the supplied taxonomies.
*
* @since 2.3.0
* @since 4.2.0 Added support for 'taxonomy', 'parent', and 'term_taxonomy_id' values of `$orderby`.
* Introduced `$parent` argument.
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param int|array $object_ids The ID(s) of the object(s) to retrieve.
* @param string|array $taxonomies The taxonomies to retrieve terms from.
* @param array|string $args {
* Array of arguments.
* @type string $orderby Field by which results should be sorted. Accepts 'name', 'count', 'slug', 'term_group',
* 'term_order', 'taxonomy', 'parent', or 'term_taxonomy_id'. Default 'name'.
* @type string $order Sort order. Accepts 'ASC' or 'DESC'. Default 'ASC'.
* @type string $fields Fields to return for matched terms. Accepts 'all', 'ids', 'names', and
* 'all_with_object_id'. Note that 'all' or 'all_with_object_id' will result in an array of
* term objects being returned, 'ids' will return an array of integers, and 'names' an array
* of strings.
* @type int $parent Optional. Limit results to the direct children of a given term ID.
* }
* @return array|WP_Error The requested term data or empty array if no terms found.
* WP_Error if any of the $taxonomies don't exist.
*/
function wp_get_object_terms($object_ids, $taxonomies, $args = array()) {
global $wpdb;
if ( empty( $object_ids ) || empty( $taxonomies ) )
return array();
if ( !is_array($taxonomies) )
$taxonomies = array($taxonomies);
foreach ( $taxonomies as $taxonomy ) {
if ( ! taxonomy_exists($taxonomy) )
return new WP_Error('invalid_taxonomy', __('Invalid taxonomy'));
}
if ( !is_array($object_ids) )
$object_ids = array($object_ids);
$object_ids = array_map('intval', $object_ids);
$defaults = array(
'orderby' => 'name',
'order' => 'ASC',
'fields' => 'all',
'parent' => '',
);
$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);
}
$orderby = $args['orderby'];
$order = $args['order'];
$fields = $args['fields'];
if ( in_array( $orderby, array( 'term_id', 'name', 'slug', 'term_group' ) ) ) {
$orderby = "t.$orderby";
} else if ( in_array( $orderby, array( 'count', 'parent', 'taxonomy', 'term_taxonomy_id' ) ) ) {
$orderby = "tt.$orderby";
} else if ( 'term_order' === $orderby ) {
$orderby = 'tr.term_order';
} else if ( 'none' === $orderby ) {
$orderby = '';
$order = '';
} else {
$orderby = 't.term_id';
}
// tt_ids queries can only be none or tr.term_taxonomy_id
if ( ('tt_ids' == $fields) && !empty($orderby) )
$orderby = 'tr.term_taxonomy_id';
if ( !empty($orderby) )
$orderby = "ORDER BY $orderby";
$order = strtoupper( $order );
if ( '' !== $order && ! in_array( $order, array( 'ASC', 'DESC' ) ) )
$order = 'ASC';
$taxonomy_array = $taxonomies;
$object_id_array = $object_ids;
$taxonomies = "'" . implode("', '", $taxonomies) . "'";
$object_ids = implode(', ', $object_ids);
$select_this = '';
if ( 'all' == $fields ) {
$select_this = 't.*, tt.*';
} elseif ( 'ids' == $fields ) {
$select_this = 't.term_id';
} elseif ( 'names' == $fields ) {
$select_this = 't.name';
} elseif ( 'slugs' == $fields ) {
$select_this = 't.slug';
} elseif ( 'all_with_object_id' == $fields ) {
$select_this = 't.*, tt.*, tr.object_id';
}
$where = array(
"tt.taxonomy IN ($taxonomies)",
"tr.object_id IN ($object_ids)",
);
if ( '' !== $args['parent'] ) {
$where[] = $wpdb->prepare( 'tt.parent = %d', $args['parent'] );
}
$where = implode( ' AND ', $where );
$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 $where $orderby $order";
$objects = false;
if ( 'all' == $fields || 'all_with_object_id' == $fields ) {
$_terms = $wpdb->get_results( $query );
foreach ( $_terms as $key => $term ) {
$_terms[$key] = sanitize_term( $term, $taxonomy, 'raw' );
}
$terms = array_merge( $terms, $_terms );
update_term_cache( $terms );
$objects = true;
} elseif ( 'ids' == $fields || 'names' == $fields || 'slugs' == $fields ) {
$_terms = $wpdb->get_col( $query );
$_field = ( 'ids' == $fields ) ? 'term_id' : 'name';
foreach ( $_terms as $key => $term ) {
$_terms[$key] = sanitize_term_field( $_field, $term, $term, $taxonomy, 'raw' );
}
$terms = array_merge( $terms, $_terms );
} elseif ( 'tt_ids' == $fields ) {
$terms = $wpdb->get_col("SELECT tr.term_taxonomy_id FROM $wpdb->term_relationships AS tr INNER JOIN $wpdb->term_taxonomy AS tt ON tr.term_taxonomy_id = tt.term_taxonomy_id WHERE tr.object_id IN ($object_ids) AND tt.taxonomy IN ($taxonomies) $orderby $order");
foreach ( $terms as $key => $tt_id ) {
$terms[$key] = sanitize_term_field( 'term_taxonomy_id', $tt_id, 0, $taxonomy, 'raw' ); // 0 should be the term id, however is not needed when using raw context.
}
}
if ( ! $terms ) {
$terms = array();
} elseif ( $objects && 'all_with_object_id' !== $fields ) {
$_tt_ids = array();
$_terms = array();
foreach ( $terms as $term ) {
if ( in_array( $term->term_taxonomy_id, $_tt_ids ) ) {
continue;
}
$_tt_ids[] = $term->term_taxonomy_id;
$_terms[] = $term;
}
$terms = $_terms;
} elseif ( ! $objects ) {
$terms = array_values( array_unique( $terms ) );
}
/**
* Filter the terms for a given object or objects.
*
* @since 4.2.0
*
* @param array $terms An array of terms for the given object or objects.
* @param array $object_id_array Array of object IDs for which `$terms` were retrieved.
* @param array $taxonomy_array Array of taxonomies from which `$terms` were retrieved.
* @param array $args An array of arguments for retrieving terms for the given
* object(s). See wp_get_object_terms() for details.
*/
$terms = apply_filters( 'get_object_terms', $terms, $object_id_array, $taxonomy_array, $args );
/**
* Filter the terms for a given object or objects.
*
* The `$taxonomies` parameter passed to this filter is formatted as a SQL fragment. The
* {@see 'get_object_terms'} filter is recommended as an alternative.
*
* @since 2.8.0
*
* @param array $terms An array of terms for the given object or objects.
* @param int|array $object_ids Object ID or array of IDs.
* @param string $taxonomies SQL-formatted (comma-separated and quoted) list of taxonomy names.
* @param array $args An array of arguments for retrieving terms for the given object(s).
* See {@see wp_get_object_terms()} for details.
*/
return apply_filters( 'wp_get_object_terms', $terms, $object_ids, $taxonomies, $args );
}
/**
* Add a new term to the database.
*
* A non-existent term is inserted in the following sequence:
* 1. The term is added to the term table, then related to the taxonomy.
* 2. If everything is correct, several actions are fired.
* 3. The 'term_id_filter' is evaluated.
* 4. The term cache is cleaned.
* 5. Several more actions are fired.
* 6. An array is returned containing the term_id and term_taxonomy_id.
*
* If the 'slug' argument is not empty, then it is checked to see if the term
* is invalid. If it is not a valid, existing term, it is added and the term_id
* is given.
*
* If the taxonomy is hierarchical, and the 'parent' argument is not empty,
* the term is inserted and the term_id will be given.
* Error handling:
* If $taxonomy does not exist or $term is empty,
* a WP_Error object will be returned.
*
* If the term already exists on the same hierarchical level,
* or the term slug and name are not unique, a WP_Error object will be returned.
*
* @global wpdb $wpdb WordPress database abstraction object.
* @since 2.3.0
*
* @param string $term The term to add or update.
* @param string $taxonomy The taxonomy to which to add the term.
* @param array|string $args {
* Optional. Array or string of arguments for inserting a term.
*
* @type string $alias_of Slug of the term to make this term an alias of.
* Default empty string. Accepts a term slug.
* @type string $description The term description. Default empty string.
* @type int $parent The id of the parent term. Default 0.
* @type string $slug The term slug to use. Default empty string.
* }
* @return array|WP_Error An array containing the `term_id` and `term_taxonomy_id`,
* {@see WP_Error} otherwise.
*/
function wp_insert_term( $term, $taxonomy, $args = array() ) {
global $wpdb;
if ( ! taxonomy_exists($taxonomy) ) {
return new WP_Error('invalid_taxonomy', __('Invalid taxonomy'));
}
/**
* Filter a term before it is sanitized and inserted into the database.
*
* @since 3.0.0
*
* @param string $term The term to add or update.
* @param string $taxonomy Taxonomy slug.
*/
$term = apply_filters( 'pre_insert_term', $term, $taxonomy );
if ( is_wp_error( $term ) ) {
return $term;
}
if ( is_int($term) && 0 == $term ) {
return new WP_Error('invalid_term_id', __('Invalid term ID'));
}
if ( '' == trim($term) ) {
return new WP_Error('empty_term_name', __('A name is required for this term'));
}
$defaults = array( 'alias_of' => '', 'description' => '', 'parent' => 0, 'slug' => '');
$args = wp_parse_args( $args, $defaults );
if ( $args['parent'] > 0 && ! term_exists( (int) $args['parent'] ) ) {
return new WP_Error( 'missing_parent', __( 'Parent term does not exist.' ) );
}
$args['name'] = $term;
$args['taxonomy'] = $taxonomy;
$args = sanitize_term($args, $taxonomy, 'db');
// expected_slashed ($name)
$name = wp_unslash( $args['name'] );
$description = wp_unslash( $args['description'] );
$parent = (int) $args['parent'];
$slug_provided = ! empty( $args['slug'] );
if ( ! $slug_provided ) {
$slug = sanitize_title( $name );
} else {
$slug = $args['slug'];
}
$term_group = 0;
if ( $args['alias_of'] ) {
$alias = get_term_by( 'slug', $args['alias_of'], $taxonomy );
if ( ! empty( $alias->term_group ) ) {
// The alias we want is already in a group, so let's use that one.
$term_group = $alias->term_group;
} elseif ( ! empty( $alias->term_id ) ) {
/*
* The alias is not in a group, so we create a new one
* and add the alias to it.
*/
$term_group = $wpdb->get_var("SELECT MAX(term_group) FROM $wpdb->terms") + 1;
wp_update_term( $alias->term_id, $taxonomy, array(
'term_group' => $term_group,
) );
}
}
/*
* Prevent the creation of terms with duplicate names at the same level of a taxonomy hierarchy,
* unless a unique slug has been explicitly provided.
*/
if ( $name_match = get_term_by( 'name', $name, $taxonomy ) ) {
$slug_match = get_term_by( 'slug', $slug, $taxonomy );
if ( ! $slug_provided || $name_match->slug === $slug || $slug_match ) {
if ( is_taxonomy_hierarchical( $taxonomy ) ) {
$siblings = get_terms( $taxonomy, array( 'get' => 'all', 'parent' => $parent ) );
$existing_term = null;
if ( $name_match->slug === $slug && in_array( $name, wp_list_pluck( $siblings, 'name' ) ) ) {
$existing_term = $name_match;
} elseif ( $slug_match && in_array( $slug, wp_list_pluck( $siblings, 'slug' ) ) ) {
$existing_term = $slug_match;
}
if ( $existing_term ) {
return new WP_Error( 'term_exists', __( 'A term with the name already exists with this parent.' ), $existing_term->term_id );
}
} else {
return new WP_Error( 'term_exists', __( 'A term with the name already exists in this taxonomy.' ), $name_match->term_id );
}
}
}
$slug = wp_unique_term_slug( $slug, (object) $args );
if ( false === $wpdb->insert( $wpdb->terms, compact( 'name', 'slug', 'term_group' ) ) ) {
return new WP_Error( 'db_insert_error', __( 'Could not insert term into the database' ), $wpdb->last_error );
}
$term_id = (int) $wpdb->insert_id;
// Seems unreachable, However, Is used in the case that a term name is provided, which sanitizes to an empty string.
if ( empty($slug) ) {
$slug = sanitize_title($slug, $term_id);
/** This action is documented in wp-includes/taxonomy.php */
do_action( 'edit_terms', $term_id, $taxonomy );
$wpdb->update( $wpdb->terms, compact( 'slug' ), compact( 'term_id' ) );
/** This action is documented in wp-includes/taxonomy.php */
do_action( 'edited_terms', $term_id, $taxonomy );
}
$tt_id = $wpdb->get_var( $wpdb->prepare( "SELECT tt.term_taxonomy_id FROM $wpdb->term_taxonomy AS tt INNER JOIN $wpdb->terms AS t ON tt.term_id = t.term_id WHERE tt.taxonomy = %s AND t.term_id = %d", $taxonomy, $term_id ) );
if ( !empty($tt_id) ) {
return array('term_id' => $term_id, 'term_taxonomy_id' => $tt_id);
}
$wpdb->insert( $wpdb->term_taxonomy, compact( 'term_id', 'taxonomy', 'description', 'parent') + array( 'count' => 0 ) );
$tt_id = (int) $wpdb->insert_id;
/*
* Sanity check: if we just created a term with the same parent + taxonomy + slug but a higher term_id than
* an existing term, then we have unwittingly created a duplicate term. Delete the dupe, and use the term_id
* and term_taxonomy_id of the older term instead. Then return out of the function so that the "create" hooks
* are not fired.
*/
$duplicate_term = $wpdb->get_row( $wpdb->prepare( "SELECT t.term_id, tt.term_taxonomy_id FROM $wpdb->terms t INNER JOIN $wpdb->term_taxonomy tt ON ( tt.term_id = t.term_id ) WHERE t.slug = %s AND tt.parent = %d AND tt.taxonomy = %s AND t.term_id < %d AND tt.term_taxonomy_id != %d", $slug, $parent, $taxonomy, $term_id, $tt_id ) );
if ( $duplicate_term ) {
$wpdb->delete( $wpdb->terms, array( 'term_id' => $term_id ) );
$wpdb->delete( $wpdb->term_taxonomy, array( 'term_taxonomy_id' => $tt_id ) );
$term_id = (int) $duplicate_term->term_id;
$tt_id = (int) $duplicate_term->term_taxonomy_id;
clean_term_cache( $term_id, $taxonomy );
return array( 'term_id' => $term_id, 'term_taxonomy_id' => $tt_id );
}
/**
* Fires immediately after a new term is created, before the term cache is cleaned.
*
* @since 2.3.0
*
* @param int $term_id Term ID.
* @param int $tt_id Term taxonomy ID.
* @param string $taxonomy Taxonomy slug.
*/
do_action( "create_term", $term_id, $tt_id, $taxonomy );
/**
* Fires after a new term is created for a specific taxonomy.
*
* The dynamic portion of the hook name, `$taxonomy`, refers
* to the slug of the taxonomy the term was created for.
*
* @since 2.3.0
*
* @param int $term_id Term ID.
* @param int $tt_id Term taxonomy ID.
*/
do_action( "create_$taxonomy", $term_id, $tt_id );
/**
* Filter the term ID after a new term is created.
*
* @since 2.3.0
*
* @param int $term_id Term ID.
* @param int $tt_id Taxonomy term ID.
*/
$term_id = apply_filters( 'term_id_filter', $term_id, $tt_id );
clean_term_cache($term_id, $taxonomy);
/**
* Fires after a new term is created, and after the term cache has been cleaned.
*
* @since 2.3.0
*/
do_action( "created_term", $term_id, $tt_id, $taxonomy );
/**
* Fires after a new term in a specific taxonomy is created, and after the term
* cache has been cleaned.
*
* @since 2.3.0
*
* @param int $term_id Term ID.
* @param int $tt_id Term taxonomy ID.
*/
do_action( "created_$taxonomy", $term_id, $tt_id );
return array('term_id' => $term_id, 'term_taxonomy_id' => $tt_id);
}
/**
* Create Term and Taxonomy Relationships.
*
* Relates an object (post, link etc) to a term and taxonomy type. Creates the
* term and taxonomy relationship if it doesn't already exist. Creates a term if
* it doesn't exist (using the slug).
*
* A relationship means that the term is grouped in or belongs to the taxonomy.
* A term has no meaning until it is given context by defining which taxonomy it
* exists under.
*
* @since 2.3.0
*
* @param int $object_id The object to relate to.
* @param array|int|string $terms A single term slug, single term id, or array of either term slugs or ids.
* Will replace all existing related terms in this taxonomy.
* @param string $taxonomy The context in which to relate the term to the object.
* @param bool $append Optional. If false will delete difference of terms. Default false.
* @return array|WP_Error Affected Term IDs.
*/
function wp_set_object_terms( $object_id, $terms, $taxonomy, $append = false ) {
global $wpdb;
$object_id = (int) $object_id;
if ( ! taxonomy_exists($taxonomy) )
return new WP_Error('invalid_taxonomy', __('Invalid taxonomy'));
if ( !is_array($terms) )
$terms = array($terms);
if ( ! $append )
$old_tt_ids = wp_get_object_terms($object_id, $taxonomy, array('fields' => 'tt_ids', 'orderby' => 'none'));
else
$old_tt_ids = array();
$tt_ids = array();
$term_ids = array();
$new_tt_ids = array();
foreach ( (array) $terms as $term) {
if ( !strlen(trim($term)) )
continue;
if ( !$term_info = term_exists($term, $taxonomy) ) {
// Skip if a non-existent term ID is passed.
if ( is_int($term) )
continue;
$term_info = wp_insert_term($term, $taxonomy);
}
if ( is_wp_error($term_info) )
return $term_info;
$term_ids[] = $term_info['term_id'];
$tt_id = $term_info['term_taxonomy_id'];
$tt_ids[] = $tt_id;
if ( $wpdb->get_var( $wpdb->prepare( "SELECT term_taxonomy_id FROM $wpdb->term_relationships WHERE object_id = %d AND term_taxonomy_id = %d", $object_id, $tt_id ) ) )
continue;
/**
* Fires immediately before an object-term relationship is added.
*
* @since 2.9.0
*
* @param int $object_id Object ID.
* @param int $tt_id Term taxonomy ID.
*/
do_action( 'add_term_relationship', $object_id, $tt_id );
$wpdb->insert( $wpdb->term_relationships, array( 'object_id' => $object_id, 'term_taxonomy_id' => $tt_id ) );
/**
* Fires immediately after an object-term relationship is added.
*
* @since 2.9.0
*
* @param int $object_id Object ID.
* @param int $tt_id Term taxonomy ID.
*/
do_action( 'added_term_relationship', $object_id, $tt_id );
$new_tt_ids[] = $tt_id;
}
if ( $new_tt_ids )
wp_update_term_count( $new_tt_ids, $taxonomy );
if ( ! $append ) {
$delete_tt_ids = array_diff( $old_tt_ids, $tt_ids );
if ( $delete_tt_ids ) {
$in_delete_tt_ids = "'" . implode( "', '", $delete_tt_ids ) . "'";
$delete_term_ids = $wpdb->get_col( $wpdb->prepare( "SELECT tt.term_id FROM $wpdb->term_taxonomy AS tt WHERE tt.taxonomy = %s AND tt.term_taxonomy_id IN ($in_delete_tt_ids)", $taxonomy ) );
$delete_term_ids = array_map( 'intval', $delete_term_ids );
$remove = wp_remove_object_terms( $object_id, $delete_term_ids, $taxonomy );
if ( is_wp_error( $remove ) ) {
return $remove;
}
}
}
$t = get_taxonomy($taxonomy);
if ( ! $append && isset($t->sort) && $t->sort ) {
$values = array();
$term_order = 0;
$final_tt_ids = wp_get_object_terms($object_id, $taxonomy, array('fields' => 'tt_ids'));
foreach ( $tt_ids as $tt_id )
if ( in_array($tt_id, $final_tt_ids) )
$values[] = $wpdb->prepare( "(%d, %d, %d)", $object_id, $tt_id, ++$term_order);
if ( $values )
if ( false === $wpdb->query( "INSERT INTO $wpdb->term_relationships (object_id, term_taxonomy_id, term_order) VALUES " . join( ',', $values ) . " ON DUPLICATE KEY UPDATE term_order = VALUES(term_order)" ) )
return new WP_Error( 'db_insert_error', __( 'Could not insert term relationship into the database' ), $wpdb->last_error );
}
wp_cache_delete( $object_id, $taxonomy . '_relationships' );
/**
* Fires after an object's terms have been set.
*
* @since 2.8.0
*
* @param int $object_id Object ID.
* @param array $terms An array of object terms.
* @param array $tt_ids An array of term taxonomy IDs.
* @param string $taxonomy Taxonomy slug.
* @param bool $append Whether to append new terms to the old terms.
* @param array $old_tt_ids Old array of term taxonomy IDs.
*/
do_action( 'set_object_terms', $object_id, $terms, $tt_ids, $taxonomy, $append, $old_tt_ids );
return $tt_ids;
}
/**
* Add term(s) associated with a given object.
*
* @since 3.6.0
*
* @param int $object_id The ID of the object to which the terms will be added.
* @param array|int|string $terms The slug(s) or ID(s) of the term(s) to add.
* @param array|string $taxonomy Taxonomy name.
* @return array|WP_Error Affected Term IDs
*/
function wp_add_object_terms( $object_id, $terms, $taxonomy ) {
return wp_set_object_terms( $object_id, $terms, $taxonomy, true );
}
/**
* Remove term(s) associated with a given object.
*
* @since 3.6.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param int $object_id The ID of the object from which the terms will be removed.
* @param array|int|string $terms The slug(s) or ID(s) of the term(s) to remove.
* @param array|string $taxonomy Taxonomy name.
* @return bool|WP_Error True on success, false or WP_Error on failure.
*/
function wp_remove_object_terms( $object_id, $terms, $taxonomy ) {
global $wpdb;
$object_id = (int) $object_id;
if ( ! taxonomy_exists( $taxonomy ) ) {
return new WP_Error( 'invalid_taxonomy', __( 'Invalid Taxonomy' ) );
}
if ( ! is_array( $terms ) ) {
$terms = array( $terms );
}
$tt_ids = array();
foreach ( (array) $terms as $term ) {
if ( ! strlen( trim( $term ) ) ) {
continue;
}
if ( ! $term_info = term_exists( $term, $taxonomy ) ) {
// Skip if a non-existent term ID is passed.
if ( is_int( $term ) ) {
continue;
}
}
if ( is_wp_error( $term_info ) ) {
return $term_info;
}
$tt_ids[] = $term_info['term_taxonomy_id'];
}
if ( $tt_ids ) {
$in_tt_ids = "'" . implode( "', '", $tt_ids ) . "'";
/**
* Fires immediately before an object-term relationship is deleted.
*
* @since 2.9.0
*
* @param int $object_id Object ID.
* @param array $tt_ids An array of term taxonomy IDs.
*/
do_action( 'delete_term_relationships', $object_id, $tt_ids );
$deleted = $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->term_relationships WHERE object_id = %d AND term_taxonomy_id IN ($in_tt_ids)", $object_id ) );
/**
* Fires immediately after an object-term relationship is deleted.
*
* @since 2.9.0
*
* @param int $object_id Object ID.
* @param array $tt_ids An array of term taxonomy IDs.
*/
do_action( 'deleted_term_relationships', $object_id, $tt_ids );
wp_update_term_count( $tt_ids, $taxonomy );
return (bool) $deleted;
}
return false;
}
/**
* Will make slug unique, if it isn't already.
*
* The $slug has to be unique global to every taxonomy, meaning that one
* taxonomy term can't have a matching slug with another taxonomy term. Each
* slug has to be globally unique for every taxonomy.
*
* The way this works is that if the taxonomy that the term belongs to is
* hierarchical and has a parent, it will append that parent to the $slug.
*
* If that still doesn't return an unique slug, then it try to append a number
* until it finds a number that is truly unique.
*
* The only purpose for $term is for appending a parent, if one exists.
*
* @since 2.3.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string $slug The string that will be tried for a unique slug
* @param object $term The term object that the $slug will belong too
* @return string Will return a true unique slug.
*/
function wp_unique_term_slug($slug, $term) {
global $wpdb;
if ( ! term_exists( $slug ) )
return $slug;
// As of 4.1, duplicate slugs are allowed as long as they're in different taxonomies.
if ( get_option( 'db_version' ) >= 30133 && ! get_term_by( 'slug', $slug, $term->taxonomy ) ) {
return $slug;
}
// If the taxonomy supports hierarchy and the term has a parent, make the slug unique
// by incorporating parent slugs.
if ( is_taxonomy_hierarchical($term->taxonomy) && !empty($term->parent) ) {
$the_parent = $term->parent;
while ( ! empty($the_parent) ) {
$parent_term = get_term($the_parent, $term->taxonomy);
if ( is_wp_error($parent_term) || empty($parent_term) )
break;
$slug .= '-' . $parent_term->slug;
if ( ! term_exists( $slug ) )
return $slug;
if ( empty($parent_term->parent) )
break;
$the_parent = $parent_term->parent;
}
}
// If we didn't get a unique slug, try appending a number to make it unique.
if ( ! empty( $term->term_id ) )
$query = $wpdb->prepare( "SELECT slug FROM $wpdb->terms WHERE slug = %s AND term_id != %d", $slug, $term->term_id );
else
$query = $wpdb->prepare( "SELECT slug FROM $wpdb->terms WHERE slug = %s", $slug );
if ( $wpdb->get_var( $query ) ) {
$num = 2;
do {
$alt_slug = $slug . "-$num";
$num++;
$slug_check = $wpdb->get_var( $wpdb->prepare( "SELECT slug FROM $wpdb->terms WHERE slug = %s", $alt_slug ) );
} while ( $slug_check );
$slug = $alt_slug;
}
return $slug;
}
/**
* Update term based on arguments provided.
*
* The $args will indiscriminately override all values with the same field name.
* Care must be taken to not override important information need to update or
* update will fail (or perhaps create a new term, neither would be acceptable).
*
* Defaults will set 'alias_of', 'description', 'parent', and 'slug' if not
* defined in $args already.
*
* 'alias_of' will create a term group, if it doesn't already exist, and update
* it for the $term.
*
* If the 'slug' argument in $args is missing, then the 'name' in $args will be
* used. It should also be noted that if you set 'slug' and it isn't unique then
* a WP_Error will be passed back. If you don't pass any slug, then a unique one
* will be created for you.
*
* For what can be overrode in $args, check the term scheme can contain and stay
* away from the term keys.
*
* @since 2.3.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param int $term_id The ID of the term
* @param string $taxonomy The context in which to relate the term to the object.
* @param array|string $args Overwrite term field values
* @return array|WP_Error Returns Term ID and Taxonomy Term ID
*/
function wp_update_term( $term_id, $taxonomy, $args = array() ) {
global $wpdb;
if ( ! taxonomy_exists( $taxonomy ) ) {
return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy' ) );
}
$term_id = (int) $term_id;
// First, get all of the original args
$term = get_term( $term_id, $taxonomy, ARRAY_A );
if ( is_wp_error( $term ) ) {
return $term;
}
if ( ! $term ) {
return new WP_Error( 'invalid_term', __( 'Empty Term' ) );
}
// Escape data pulled from DB.
$term = wp_slash($term);
// Merge old and new args with new args overwriting old ones.
$args = array_merge($term, $args);
$defaults = array( 'alias_of' => '', 'description' => '', 'parent' => 0, 'slug' => '');
$args = wp_parse_args($args, $defaults);
$args = sanitize_term($args, $taxonomy, 'db');
$parsed_args = $args;
// expected_slashed ($name)
$name = wp_unslash( $args['name'] );
$description = wp_unslash( $args['description'] );
$parsed_args['name'] = $name;
$parsed_args['description'] = $description;
if ( '' == trim($name) )
return new WP_Error('empty_term_name', __('A name is required for this term'));
if ( $parsed_args['parent'] > 0 && ! term_exists( (int) $parsed_args['parent'] ) ) {
return new WP_Error( 'missing_parent', __( 'Parent term does not exist.' ) );
}
$empty_slug = false;
if ( empty( $args['slug'] ) ) {
$empty_slug = true;
$slug = sanitize_title($name);
} else {
$slug = $args['slug'];
}
$parsed_args['slug'] = $slug;
$term_group = isset( $parsed_args['term_group'] ) ? $parsed_args['term_group'] : 0;
if ( $args['alias_of'] ) {
$alias = get_term_by( 'slug', $args['alias_of'], $taxonomy );
if ( ! empty( $alias->term_group ) ) {
// The alias we want is already in a group, so let's use that one.
$term_group = $alias->term_group;
} elseif ( ! empty( $alias->term_id ) ) {
/*
* The alias is not in a group, so we create a new one
* and add the alias to it.
*/
$term_group = $wpdb->get_var("SELECT MAX(term_group) FROM $wpdb->terms") + 1;
wp_update_term( $alias->term_id, $taxonomy, array(
'term_group' => $term_group,
) );
}
$parsed_args['term_group'] = $term_group;
}
/**
* Filter the term parent.
*
* Hook to this filter to see if it will cause a hierarchy loop.
*
* @since 3.1.0
*
* @param int $parent ID of the parent term.
* @param int $term_id Term ID.
* @param string $taxonomy Taxonomy slug.
* @param array $parsed_args An array of potentially altered update arguments for the given term.
* @param array $args An array of update arguments for the given term.
*/
$parent = apply_filters( 'wp_update_term_parent', $args['parent'], $term_id, $taxonomy, $parsed_args, $args );
// Check for duplicate slug
$duplicate = get_term_by( 'slug', $slug, $taxonomy );
if ( $duplicate && $duplicate->term_id != $term_id ) {
// If an empty slug was passed or the parent changed, reset the slug to something unique.
// Otherwise, bail.
if ( $empty_slug || ( $parent != $term['parent']) )
$slug = wp_unique_term_slug($slug, (object) $args);
else
return new WP_Error('duplicate_term_slug', sprintf(__('The slug “%s” is already in use by another term'), $slug));
}
$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) );
// Check whether this is a shared term that needs splitting.
$_term_id = _split_shared_term( $term_id, $tt_id );
if ( ! is_wp_error( $_term_id ) ) {
$term_id = $_term_id;
}
/**
* Fires immediately before the given terms are edited.
*
* @since 2.9.0
*
* @param int $term_id Term ID.
* @param string $taxonomy Taxonomy slug.
*/
do_action( 'edit_terms', $term_id, $taxonomy );
$wpdb->update($wpdb->terms, compact( 'name', 'slug', 'term_group' ), compact( 'term_id' ) );
if ( empty($slug) ) {
$slug = sanitize_title($name, $term_id);
$wpdb->update( $wpdb->terms, compact( 'slug' ), compact( 'term_id' ) );
}
/**
* Fires immediately after the given terms are edited.
*
* @since 2.9.0
*
* @param int $term_id Term ID
* @param string $taxonomy Taxonomy slug.
*/
do_action( 'edited_terms', $term_id, $taxonomy );
/**
* Fires immediate before a term-taxonomy relationship is updated.
*
* @since 2.9.0
*
* @param int $tt_id Term taxonomy ID.
* @param string $taxonomy Taxonomy slug.
*/
do_action( 'edit_term_taxonomy', $tt_id, $taxonomy );
$wpdb->update( $wpdb->term_taxonomy, compact( 'term_id', 'taxonomy', 'description', 'parent' ), array( 'term_taxonomy_id' => $tt_id ) );
/**
* Fires immediately after a term-taxonomy relationship is updated.
*
* @since 2.9.0
*
* @param int $tt_id Term taxonomy ID.
* @param string $taxonomy Taxonomy slug.
*/
do_action( 'edited_term_taxonomy', $tt_id, $taxonomy );
// Clean the relationship caches for all object types using this term
$objects = $wpdb->get_col( $wpdb->prepare( "SELECT object_id FROM $wpdb->term_relationships WHERE term_taxonomy_id = %d", $tt_id ) );
$tax_object = get_taxonomy( $taxonomy );
foreach ( $tax_object->object_type as $object_type ) {
clean_object_term_cache( $objects, $object_type );
}
/**
* Fires after a term has been updated, but before the term cache has been cleaned.
*
* @since 2.3.0
*
* @param int $term_id Term ID.
* @param int $tt_id Term taxonomy ID.
* @param string $taxonomy Taxonomy slug.
*/
do_action( "edit_term", $term_id, $tt_id, $taxonomy );
/**
* Fires after a term in a specific taxonomy has been updated, but before the term
* cache has been cleaned.
*
* The dynamic portion of the hook name, `$taxonomy`, refers to the taxonomy slug.
*
* @since 2.3.0
*
* @param int $term_id Term ID.
* @param int $tt_id Term taxonomy ID.
*/
do_action( "edit_$taxonomy", $term_id, $tt_id );
/** This filter is documented in wp-includes/taxonomy.php */
$term_id = apply_filters( 'term_id_filter', $term_id, $tt_id );
clean_term_cache($term_id, $taxonomy);
/**
* Fires after a term has been updated, and the term cache has been cleaned.
*
* @since 2.3.0
*
* @param int $term_id Term ID.
* @param int $tt_id Term taxonomy ID.
* @param string $taxonomy Taxonomy slug.
*/
do_action( "edited_term", $term_id, $tt_id, $taxonomy );
/**
* Fires after a term for a specific taxonomy has been updated, and the term
* cache has been cleaned.
*
* The dynamic portion of the hook name, `$taxonomy`, refers to the taxonomy slug.
*
* @since 2.3.0
*
* @param int $term_id Term ID.
* @param int $tt_id Term taxonomy ID.
*/
do_action( "edited_$taxonomy", $term_id, $tt_id );
return array('term_id' => $term_id, 'term_taxonomy_id' => $tt_id);
}
/**
* Enable or disable term counting.
*
* @since 2.5.0
*
* @param bool $defer Optional. Enable if true, disable if false.
* @return bool Whether term counting is enabled or disabled.
*/
function wp_defer_term_counting($defer=null) {
static $_defer = false;
if ( is_bool($defer) ) {
$_defer = $defer;
// flush any deferred counts
if ( !$defer )
wp_update_term_count( null, null, true );
}
return $_defer;
}
/**
* Updates the amount of terms in taxonomy.
*
* If there is a taxonomy callback applied, then it will be called for updating
* the count.
*
* The default action is to count what the amount of terms have the relationship
* of term ID. Once that is done, then update the database.
*
* @since 2.3.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @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 ) {
$terms = array_map('intval', $terms);
$taxonomy = get_taxonomy($taxonomy);
if ( !empty($taxonomy->update_count_callback) ) {
call_user_func($taxonomy->update_count_callback, $terms, $taxonomy);
} else {
$object_types = (array) $taxonomy->object_type;
foreach ( $object_types as &$object_type ) {
if ( 0 === strpos( $object_type, 'attachment:' ) )
list( $object_type ) = explode( ':', $object_type );
}
if ( $object_types == array_filter( $object_types, 'post_type_exists' ) ) {
// Only post types are attached to this taxonomy
_update_post_term_count( $terms, $taxonomy );
} else {
// Default count updater
_update_generic_term_count( $terms, $taxonomy );
}
}
clean_term_cache($terms, '', false);
return true;
}
//
// Cache
//
/**
* Removes the taxonomy relationship to terms from the cache.
*
* Will remove the entire taxonomy relationship containing term $object_id. The
* term IDs have to exist within the taxonomy $object_type for the deletion to
* take place.
*
* @since 2.3.0
*
* @see get_object_taxonomies() for more on $object_type
*
* @param int|array $object_ids Single or list of term object ID(s)
* @param array|string $object_type The taxonomy object type
*/
function clean_object_term_cache($object_ids, $object_type) {
if ( !is_array($object_ids) )
$object_ids = array($object_ids);
$taxonomies = get_object_taxonomies( $object_type );
foreach ( $object_ids as $id ) {
foreach ( $taxonomies as $taxonomy ) {
wp_cache_delete($id, "{$taxonomy}_relationships");
}
}
/**
* Fires after the object term cache has been cleaned.
*
* @since 2.5.0
*
* @param array $object_ids An array of object IDs.
* @param string $objet_type Object type.
*/
do_action( 'clean_object_term_cache', $object_ids, $object_type );
}
/**
* Will remove all of the term ids from the cache.
*
* @since 2.3.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param int|array $ids Single or list of Term IDs
* @param string $taxonomy Can be empty and will assume tt_ids, else will use for context.
* @param bool $clean_taxonomy Whether to clean taxonomy wide caches (true), or just individual term object caches (false). Default is true.
*/
function clean_term_cache($ids, $taxonomy = '', $clean_taxonomy = true) {
global $wpdb;
if ( !is_array($ids) )
$ids = array($ids);
$taxonomies = array();
// If no taxonomy, assume tt_ids.
if ( empty($taxonomy) ) {
$tt_ids = array_map('intval', $ids);
$tt_ids = implode(', ', $tt_ids);
$terms = $wpdb->get_results("SELECT term_id, taxonomy FROM $wpdb->term_taxonomy WHERE term_taxonomy_id IN ($tt_ids)");
$ids = array();
foreach ( (array) $terms as $term ) {
$taxonomies[] = $term->taxonomy;
$ids[] = $term->term_id;
wp_cache_delete($term->term_id, $term->taxonomy);
}
$taxonomies = array_unique($taxonomies);
} else {
$taxonomies = array($taxonomy);
foreach ( $taxonomies as $taxonomy ) {
foreach ( $ids as $id ) {
wp_cache_delete($id, $taxonomy);
}
}
}
foreach ( $taxonomies as $taxonomy ) {
if ( $clean_taxonomy ) {
wp_cache_delete('all_ids', $taxonomy);
wp_cache_delete('get', $taxonomy);
delete_option("{$taxonomy}_children");
// Regenerate {$taxonomy}_children
_get_term_hierarchy($taxonomy);
}
/**
* Fires once after each taxonomy's term cache has been cleaned.
*
* @since 2.5.0
*
* @param array $ids An array of term IDs.
* @param string $taxonomy Taxonomy slug.
*/
do_action( 'clean_term_cache', $ids, $taxonomy );
}
wp_cache_set( 'last_changed', microtime(), 'terms' );
}
/**
* Retrieves the taxonomy relationship to the term object id.
*
* @since 2.3.0
*
* @param int $id Term object ID
* @param string $taxonomy Taxonomy Name
* @return bool|array Empty array if $terms found, but not $taxonomy. False if nothing is in cache for $taxonomy and $id.
*/
function get_object_term_cache($id, $taxonomy) {
$cache = wp_cache_get($id, "{$taxonomy}_relationships");
return $cache;
}
/**
* Updates the cache for the given term object ID(s).
*
* Note: Due to performance concerns, great care should be taken to only update
* term caches when necessary. Processing time can increase exponentially depending
* on both the number of passed term IDs and the number of taxonomies those terms
* belong to.
*
* Caches will only be updated for terms not already cached.
*
* @since 2.3.0
*
* @param string|array $object_ids Comma-separated list or array of term object IDs..
* @param array|string $object_type The taxonomy object type.
* @return null|false Null if `$object_ids` is empty, false if all of the terms in
* `$object_ids` are already cached.
*/
function update_object_term_cache($object_ids, $object_type) {
if ( empty($object_ids) )
return;
if ( !is_array($object_ids) )
$object_ids = explode(',', $object_ids);
$object_ids = array_map('intval', $object_ids);
$taxonomies = get_object_taxonomies($object_type);
$ids = array();
foreach ( (array) $object_ids as $id ) {
foreach ( $taxonomies as $taxonomy ) {
if ( false === wp_cache_get($id, "{$taxonomy}_relationships") ) {
$ids[] = $id;
break;
}
}
}
if ( empty( $ids ) )
return false;
$terms = wp_get_object_terms($ids, $taxonomies, array('fields' => 'all_with_object_id'));
$object_terms = array();
foreach ( (array) $terms as $term )
$object_terms[$term->object_id][$term->taxonomy][] = $term;
foreach ( $ids as $id ) {
foreach ( $taxonomies as $taxonomy ) {
if ( ! isset($object_terms[$id][$taxonomy]) ) {
if ( !isset($object_terms[$id]) )
$object_terms[$id] = array();
$object_terms[$id][$taxonomy] = array();
}
}
}
foreach ( $object_terms as $id => $value ) {
foreach ( $value as $taxonomy => $terms ) {
wp_cache_add( $id, $terms, "{$taxonomy}_relationships" );
}
}
}
/**
* Updates Terms to Taxonomy in cache.
*
* @since 2.3.0
*
* @param array $terms List of Term objects to change
* @param string $taxonomy Optional. Update Term to this taxonomy in cache
*/
function update_term_cache($terms, $taxonomy = '') {
foreach ( (array) $terms as $term ) {
$term_taxonomy = $taxonomy;
if ( empty($term_taxonomy) )
$term_taxonomy = $term->taxonomy;
wp_cache_add( $term->term_id, $term, $term_taxonomy );
}
}
//
// Private
//
/**
* Retrieves children of taxonomy as Term IDs.
*
* @access private
* @since 2.3.0
*
* @param string $taxonomy Taxonomy Name
* @return array Empty if $taxonomy isn't hierarchical or returns children as Term IDs.
*/
function _get_term_hierarchy($taxonomy) {
if ( !is_taxonomy_hierarchical($taxonomy) )
return array();
$children = get_option("{$taxonomy}_children");
if ( is_array($children) )
return $children;
$children = array();
$terms = get_terms($taxonomy, array('get' => 'all', 'orderby' => 'id', 'fields' => 'id=>parent'));
foreach ( $terms as $term_id => $parent ) {
if ( $parent > 0 )
$children[$parent][] = $term_id;
}
update_option("{$taxonomy}_children", $children);
return $children;
}
/**
* Get the subset of $terms that are descendants of $term_id.
*
* If $terms is an array of objects, then _get_term_children returns an array of objects.
* If $terms is an array of IDs, then _get_term_children returns an array of IDs.
*
* @access private
* @since 2.3.0
*
* @param int $term_id The ancestor term: all returned terms should be descendants of $term_id.
* @param array $terms The set of terms - either an array of term objects or term IDs - from which those that
* are descendants of $term_id will be chosen.
* @param string $taxonomy The taxonomy which determines the hierarchy of the terms.
* @param array $ancestors Term ancestors that have already been identified. Passed by reference, to keep track of
* found terms when recursing the hierarchy. The array of located ancestors is used to prevent
* infinite recursion loops. For performance, term_ids are used as array keys, with 1 as value.
* @return array The subset of $terms that are descendants of $term_id.
*/
function _get_term_children( $term_id, $terms, $taxonomy, &$ancestors = array() ) {
$empty_array = array();
if ( empty($terms) )
return $empty_array;
$term_list = array();
$has_children = _get_term_hierarchy($taxonomy);
if ( ( 0 != $term_id ) && ! isset($has_children[$term_id]) )
return $empty_array;
// Include the term itself in the ancestors array, so we can properly detect when a loop has occurred.
if ( empty( $ancestors ) ) {
$ancestors[ $term_id ] = 1;
}
foreach ( (array) $terms as $term ) {
$use_id = false;
if ( !is_object($term) ) {
$term = get_term($term, $taxonomy);
if ( is_wp_error( $term ) )
return $term;
$use_id = true;
}
// Don't recurse if we've already identified the term as a child - this indicates a loop.
if ( isset( $ancestors[ $term->term_id ] ) ) {
continue;
}
if ( $term->parent == $term_id ) {
if ( $use_id )
$term_list[] = $term->term_id;
else
$term_list[] = $term;
if ( !isset($has_children[$term->term_id]) )
continue;
$ancestors[ $term->term_id ] = 1;
if ( $children = _get_term_children( $term->term_id, $terms, $taxonomy, $ancestors) )
$term_list = array_merge($term_list, $children);
}
}
return $term_list;
}
/**
* Add count of children to parent count.
*
* Recalculates term counts by including items from child terms. Assumes all
* relevant children are already in the $terms argument.
*
* @access private
* @since 2.3.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param array $terms List of Term IDs
* @param string $taxonomy Term Context
* @return null Will break from function if conditions are not met.
*/
function _pad_term_counts(&$terms, $taxonomy) {
global $wpdb;
// This function only works for hierarchical taxonomies like post categories.
if ( !is_taxonomy_hierarchical( $taxonomy ) )
return;
$term_hier = _get_term_hierarchy($taxonomy);
if ( empty($term_hier) )
return;
$term_items = array();
$terms_by_id = array();
$term_ids = array();
foreach ( (array) $terms as $key => $term ) {
$terms_by_id[$term->term_id] = & $terms[$key];
$term_ids[$term->term_taxonomy_id] = $term->term_id;
}
// Get the object and term ids and stick them in a lookup table
$tax_obj = get_taxonomy($taxonomy);
$object_types = esc_sql($tax_obj->object_type);
$results = $wpdb->get_results("SELECT object_id, term_taxonomy_id FROM $wpdb->term_relationships INNER JOIN $wpdb->posts ON object_id = ID WHERE term_taxonomy_id IN (" . implode(',', array_keys($term_ids)) . ") AND post_type IN ('" . implode("', '", $object_types) . "') AND post_status = 'publish'");
foreach ( $results as $row ) {
$id = $term_ids[$row->term_taxonomy_id];
$term_items[$id][$row->object_id] = isset($term_items[$id][$row->object_id]) ? ++$term_items[$id][$row->object_id] : 1;
}
// Touch every ancestor's lookup row for each post in each term
foreach ( $term_ids as $term_id ) {
$child = $term_id;
$ancestors = array();
while ( !empty( $terms_by_id[$child] ) && $parent = $terms_by_id[$child]->parent ) {
$ancestors[] = $child;
if ( !empty( $term_items[$term_id] ) )
foreach ( $term_items[$term_id] as $item_id => $touches ) {
$term_items[$parent][$item_id] = isset($term_items[$parent][$item_id]) ? ++$term_items[$parent][$item_id]: 1;
}
$child = $parent;
if ( in_array( $parent, $ancestors ) ) {
break;
}
}
}
// Transfer the touched cells
foreach ( (array) $term_items as $id => $items )
if ( isset($terms_by_id[$id]) )
$terms_by_id[$id]->count = count($items);
}
//
// Default callbacks
//
/**
* Will update term count based on object types of the current taxonomy.
*
* Private function for the default callback for post_tag and category
* taxonomies.
*
* @access private
* @since 2.3.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param array $terms List of Term taxonomy IDs
* @param object $taxonomy Current taxonomy object of terms
*/
function _update_post_term_count( $terms, $taxonomy ) {
global $wpdb;
$object_types = (array) $taxonomy->object_type;
foreach ( $object_types as &$object_type )
list( $object_type ) = explode( ':', $object_type );
$object_types = array_unique( $object_types );
if ( false !== ( $check_attachments = array_search( 'attachment', $object_types ) ) ) {
unset( $object_types[ $check_attachments ] );
$check_attachments = true;
}
if ( $object_types )
$object_types = esc_sql( array_filter( $object_types, 'post_type_exists' ) );
foreach ( (array) $terms as $term ) {
$count = 0;
// Attachments can be 'inherit' status, we need to base count off the parent's status if so
if ( $check_attachments )
$count += (int) $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->term_relationships, $wpdb->posts p1 WHERE p1.ID = $wpdb->term_relationships.object_id AND ( post_status = 'publish' OR ( post_status = 'inherit' AND post_parent > 0 AND ( SELECT post_status FROM $wpdb->posts WHERE ID = p1.post_parent ) = 'publish' ) ) AND post_type = 'attachment' AND term_taxonomy_id = %d", $term ) );
if ( $object_types )
$count += (int) $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->term_relationships, $wpdb->posts WHERE $wpdb->posts.ID = $wpdb->term_relationships.object_id AND post_status = 'publish' AND post_type IN ('" . implode("', '", $object_types ) . "') AND term_taxonomy_id = %d", $term ) );
/** This action is documented in wp-includes/taxonomy.php */
do_action( 'edit_term_taxonomy', $term, $taxonomy->name );
$wpdb->update( $wpdb->term_taxonomy, compact( 'count' ), array( 'term_taxonomy_id' => $term ) );
/** This action is documented in wp-includes/taxonomy.php */
do_action( 'edited_term_taxonomy', $term, $taxonomy->name );
}
}
/**
* Will update term count based on number of objects.
*
* Default callback for the link_category taxonomy.
*
* @since 3.3.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param array $terms List of Term taxonomy IDs
* @param object $taxonomy Current taxonomy object of terms
*/
function _update_generic_term_count( $terms, $taxonomy ) {
global $wpdb;
foreach ( (array) $terms as $term ) {
$count = $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->term_relationships WHERE term_taxonomy_id = %d", $term ) );
/** This action is documented in wp-includes/taxonomy.php */
do_action( 'edit_term_taxonomy', $term, $taxonomy->name );
$wpdb->update( $wpdb->term_taxonomy, compact( 'count' ), array( 'term_taxonomy_id' => $term ) );
/** This action is documented in wp-includes/taxonomy.php */
do_action( 'edited_term_taxonomy', $term, $taxonomy->name );
}
}
/**
* Create a new term for a term_taxonomy item that currently shares its term with another term_taxonomy.
*
* @ignore
* @since 4.2.0
*
* @param int $term_id ID of the shared term.
* @param int $term_taxonomy_id ID of the term_taxonomy item to receive a new term.
* @return int|WP_Error When the current term does not need to be split (or cannot be split on the current
* database schema), `$term_id` is returned. When the term is successfully split, the
* new term_id is returned. A WP_Error is returned for miscellaneous errors.
*/
function _split_shared_term( $term_id, $term_taxonomy_id ) {
global $wpdb;
// Don't try to split terms if database schema does not support shared slugs.
$current_db_version = get_option( 'db_version' );
if ( $current_db_version < 30133 ) {
return $term_id;
}
// If there are no shared term_taxonomy rows, there's nothing to do here.
$shared_tt_count = $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->term_taxonomy tt WHERE tt.term_id = %d AND tt.term_taxonomy_id != %d", $term_id, $term_taxonomy_id ) );
if ( ! $shared_tt_count ) {
return $term_id;
}
// Pull up data about the currently shared slug, which we'll use to populate the new one.
$shared_term = $wpdb->get_row( $wpdb->prepare( "SELECT t.* FROM $wpdb->terms t WHERE t.term_id = %d", $term_id ) );
$new_term_data = array(
'name' => $shared_term->name,
'slug' => $shared_term->slug,
'term_group' => $shared_term->term_group,
);
if ( false === $wpdb->insert( $wpdb->terms, $new_term_data ) ) {
return new WP_Error( 'db_insert_error', __( 'Could not split shared term.' ), $wpdb->last_error );
}
$new_term_id = (int) $wpdb->insert_id;
// Update the existing term_taxonomy to point to the newly created term.
$wpdb->update( $wpdb->term_taxonomy,
array( 'term_id' => $new_term_id ),
array( 'term_taxonomy_id' => $term_taxonomy_id )
);
// Reassign child terms to the new parent.
$term_taxonomy = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->term_taxonomy WHERE term_taxonomy_id = %d", $term_taxonomy_id ) );
$children_tt_ids = $wpdb->get_col( $wpdb->prepare( "SELECT term_taxonomy_id FROM $wpdb->term_taxonomy WHERE taxonomy = %s AND parent = %d", $term_taxonomy->taxonomy, $term_id ) );
if ( ! empty( $children_tt_ids ) ) {
foreach ( $children_tt_ids as $child_tt_id ) {
$wpdb->update( $wpdb->term_taxonomy,
array( 'parent' => $new_term_id ),
array( 'term_taxonomy_id' => $child_tt_id )
);
clean_term_cache( $term_id, $term_taxonomy->taxonomy );
}
} else {
// If the term has no children, we must force its taxonomy cache to be rebuilt separately.
clean_term_cache( $new_term_id, $term_taxonomy->taxonomy );
}
// Clean the cache for term taxonomies formerly shared with the current term.
$shared_term_taxonomies = $wpdb->get_row( $wpdb->prepare( "SELECT taxonomy FROM $wpdb->term_taxonomy WHERE term_id = %d", $term_id ) );
if ( $shared_term_taxonomies ) {
foreach ( $shared_term_taxonomies as $shared_term_taxonomy ) {
clean_term_cache( $term_id, $shared_term_taxonomy );
}
}
// Keep a record of term_ids that have been split, keyed by old term_id. See {@see wp_get_split_term()}.
$split_term_data = get_option( '_split_terms', array() );
if ( ! isset( $split_term_data[ $term_id ] ) ) {
$split_term_data[ $term_id ] = array();
}
$split_term_data[ $term_id ][ $term_taxonomy->taxonomy ] = $new_term_id;
update_option( '_split_terms', $split_term_data );
/**
* Fires after a previously shared taxonomy term is split into two separate terms.
*
* @since 4.2.0
*
* @param int $term_id ID of the formerly shared term.
* @param int $new_term_id ID of the new term created for the $term_taxonomy_id.
* @param int $term_taxonomy_id ID for the term_taxonomy row affected by the split.
* @param string $taxonomy Taxonomy for the split term.
*/
do_action( 'split_shared_term', $term_id, $new_term_id, $term_taxonomy_id, $term_taxonomy->taxonomy );
return $new_term_id;
}
/**
* Check default categories when a term gets split to see if any of them need to be updated.
*
* @ignore
* @since 4.2.0
*
* @param int $term_id ID of the formerly shared term.
* @param int $new_term_id ID of the new term created for the $term_taxonomy_id.
* @param int $term_taxonomy_id ID for the term_taxonomy row affected by the split.
* @param string $taxonomy Taxonomy for the split term.
*/
function _wp_check_split_default_terms( $term_id, $new_term_id, $term_taxonomy_id, $taxonomy ) {
if ( 'category' != $taxonomy ) {
return;
}
foreach ( array( 'default_category', 'default_link_category', 'default_email_category' ) as $option ) {
if ( $term_id == get_option( $option, -1 ) ) {
update_option( $option, $new_term_id );
}
}
}
/**
* Check menu items when a term gets split to see if any of them need to be updated.
*
* @ignore
* @since 4.2.0
*
* @param int $term_id ID of the formerly shared term.
* @param int $new_term_id ID of the new term created for the $term_taxonomy_id.
* @param int $term_taxonomy_id ID for the term_taxonomy row affected by the split.
* @param string $taxonomy Taxonomy for the split term.
*/
function _wp_check_split_terms_in_menus( $term_id, $new_term_id, $term_taxonomy_id, $taxonomy ) {
global $wpdb;
$post_ids = $wpdb->get_col( $wpdb->prepare(
"SELECT m1.post_id
FROM {$wpdb->postmeta} AS m1
INNER JOIN {$wpdb->postmeta} AS m2 ON ( m2.post_id = m1.post_id )
INNER JOIN {$wpdb->postmeta} AS m3 ON ( m3.post_id = m1.post_id )
WHERE ( m1.meta_key = '_menu_item_type' AND m1.meta_value = 'taxonomy' )
AND ( m2.meta_key = '_menu_item_object' AND m2.meta_value = '%s' )
AND ( m3.meta_key = '_menu_item_object_id' AND m3.meta_value = %d )",
$taxonomy,
$term_id
) );
if ( $post_ids ) {
foreach ( $post_ids as $post_id ) {
update_post_meta( $post_id, '_menu_item_object_id', $new_term_id, $term_id );
}
}
}
/**
* Get data about terms that previously shared a single term_id, but have since been split.
*
* @since 4.2.0
*
* @param int $old_term_id Term ID. This is the old, pre-split term ID.
* @return array Array of new term IDs, keyed by taxonomy.
*/
function wp_get_split_terms( $old_term_id ) {
$split_terms = get_option( '_split_terms', array() );
$terms = array();
if ( isset( $split_terms[ $old_term_id ] ) ) {
$terms = $split_terms[ $old_term_id ];
}
return $terms;
}
/**
* Get the new term ID corresponding to a previously split term.
*
* @since 4.2.0
*
* @param int $old_term_id Term ID. This is the old, pre-split term ID.
* @param string $taxonomy Taxonomy that the term belongs to.
* @return bool|int If a previously split term is found corresponding to the old term_id and taxonomy,
* the new term_id will be returned. If no previously split term is found matching
* the parameters, returns false.
*/
function wp_get_split_term( $old_term_id, $taxonomy ) {
$split_terms = wp_get_split_terms( $old_term_id );
$term_id = false;
if ( isset( $split_terms[ $taxonomy ] ) ) {
$term_id = (int) $split_terms[ $taxonomy ];
}
return $term_id;
}
/**
* Generate a permalink for a taxonomy term archive.
*
* @since 2.5.0
*
* @param object|int|string $term The term object, ID, or slug whose link will be retrieved.
* @param string $taxonomy Optional. Taxonomy. Default empty.
* @return string|WP_Error HTML link to taxonomy term archive on success, WP_Error if term does not exist.
*/
function get_term_link( $term, $taxonomy = '') {
global $wp_rewrite;
if ( !is_object($term) ) {
if ( is_int($term) ) {
$term = get_term($term, $taxonomy);
} else {
$term = get_term_by('slug', $term, $taxonomy);
}
}
if ( !is_object($term) )
$term = new WP_Error('invalid_term', __('Empty Term'));
if ( is_wp_error( $term ) )
return $term;
$taxonomy = $term->taxonomy;
$termlink = $wp_rewrite->get_extra_permastruct($taxonomy);
$slug = $term->slug;
$t = get_taxonomy($taxonomy);
if ( empty($termlink) ) {
if ( 'category' == $taxonomy )
$termlink = '?cat=' . $term->term_id;
elseif ( $t->query_var )
$termlink = "?$t->query_var=$slug";
else
$termlink = "?taxonomy=$taxonomy&term=$slug";
$termlink = home_url($termlink);
} else {
if ( $t->rewrite['hierarchical'] ) {
$hierarchical_slugs = array();
$ancestors = get_ancestors( $term->term_id, $taxonomy, 'taxonomy' );
foreach ( (array)$ancestors as $ancestor ) {
$ancestor_term = get_term($ancestor, $taxonomy);
$hierarchical_slugs[] = $ancestor_term->slug;
}
$hierarchical_slugs = array_reverse($hierarchical_slugs);
$hierarchical_slugs[] = $slug;
$termlink = str_replace("%$taxonomy%", implode('/', $hierarchical_slugs), $termlink);
} else {
$termlink = str_replace("%$taxonomy%", $slug, $termlink);
}
$termlink = home_url( user_trailingslashit($termlink, 'category') );
}
// Back Compat filters.
if ( 'post_tag' == $taxonomy ) {
/**
* Filter the tag link.
*
* @since 2.3.0
* @deprecated 2.5.0 Use 'term_link' instead.
*
* @param string $termlink Tag link URL.
* @param int $term_id Term ID.
*/
$termlink = apply_filters( 'tag_link', $termlink, $term->term_id );
} elseif ( 'category' == $taxonomy ) {
/**
* Filter the category link.
*
* @since 1.5.0
* @deprecated 2.5.0 Use 'term_link' instead.
*
* @param string $termlink Category link URL.
* @param int $term_id Term ID.
*/
$termlink = apply_filters( 'category_link', $termlink, $term->term_id );
}
/**
* Filter the term link.
*
* @since 2.5.0
*
* @param string $termlink Term link URL.
* @param object $term Term object.
* @param string $taxonomy Taxonomy slug.
*/
return apply_filters( 'term_link', $termlink, $term, $taxonomy );
}
/**
* Display the taxonomies of a post with available options.
*
* This function can be used within the loop to display the taxonomies for a
* post without specifying the Post ID. You can also use it outside the Loop to
* display the taxonomies for a specific post.
*
* @since 2.5.0
*
* @param array $args {
* Arguments about which post to use and how to format the output. Shares all of the arguments supported by
* {@link get_the_taxonomies()}, in addition to the following.
*
* @type int|WP_Post $post Post ID or object to get taxonomies of. Default current post.
* @type string $before Displays before the taxonomies. Default empty string.
* @type string $sep Separates each taxonomy. Default is a space.
* @type string $after Displays after the taxonomies. Default empty string.
* }
* @param array $args See {@link get_the_taxonomies()} for a description of arguments and their defaults.
*/
function the_taxonomies( $args = array() ) {
$defaults = array(
'post' => 0,
'before' => '',
'sep' => ' ',
'after' => '',
);
$r = wp_parse_args( $args, $defaults );
echo $r['before'] . join( $r['sep'], get_the_taxonomies( $r['post'], $r ) ) . $r['after'];
}
/**
* Retrieve all taxonomies associated with a post.
*
* This function can be used within the loop. It will also return an array of
* the taxonomies with links to the taxonomy and name.
*
* @since 2.5.0
*
* @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post.
* @param array $args {
* Arguments about how to format the list of taxonomies.
*
* @type string $template Template for displaying a taxonomy label and list of terms.
* Default is "Label: Terms."
* @type string $term_template Template for displaying a single term in the list. Default is the term name
* linked to its archive.
* }
* @return array List of taxonomies.
*/
function get_the_taxonomies( $post = 0, $args = array() ) {
$post = get_post( $post );
$args = wp_parse_args( $args, array(
/* translators: %s: taxonomy label, %l: list of terms formatted as per $term_template */
'template' => __( '%s: %l.' ),
'term_template' => '<a href="%1$s">%2$s</a>',
) );
$taxonomies = array();
if ( ! $post ) {
return $taxonomies;
}
foreach ( get_object_taxonomies( $post ) as $taxonomy ) {
$t = (array) get_taxonomy( $taxonomy );
if ( empty( $t['label'] ) ) {
$t['label'] = $taxonomy;
}
if ( empty( $t['args'] ) ) {
$t['args'] = array();
}
if ( empty( $t['template'] ) ) {
$t['template'] = $args['template'];
}
if ( empty( $t['term_template'] ) ) {
$t['term_template'] = $args['term_template'];
}
$terms = get_object_term_cache( $post->ID, $taxonomy );
if ( false === $terms ) {
$terms = wp_get_object_terms( $post->ID, $taxonomy, $t['args'] );
}
$links = array();
foreach ( $terms as $term ) {
$links[] = wp_sprintf( $t['term_template'], esc_attr( get_term_link( $term ) ), $term->name );
}
if ( $links ) {
$taxonomies[$taxonomy] = wp_sprintf( $t['template'], $t['label'], $links, $terms );
}
}
return $taxonomies;
}
/**
* Retrieve all taxonomies of a post with just the names.
*
* @since 2.5.0
*
* @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post.
* @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
*
* @param int $object_id ID of the object (post ID, link ID, ...)
* @param string $taxonomy Single taxonomy name
* @param int|string|array $terms Optional. Term term_id, name, slug or array of said
* @return bool|WP_Error WP_Error on input error.
*/
function is_object_in_term( $object_id, $taxonomy, $terms = null ) {
if ( !$object_id = (int) $object_id )
return new WP_Error( 'invalid_object', __( 'Invalid object ID' ) );
$object_terms = get_object_term_cache( $object_id, $taxonomy );
if ( false === $object_terms )
$object_terms = wp_get_object_terms( $object_id, $taxonomy );
if ( is_wp_error( $object_terms ) )
return $object_terms;
if ( empty( $object_terms ) )
return false;
if ( empty( $terms ) )
return ( !empty( $object_terms ) );
$terms = (array) $terms;
if ( $ints = array_filter( $terms, 'is_int' ) )
$strs = array_diff( $terms, $ints );
else
$strs =& $terms;
foreach ( $object_terms as $object_term ) {
// If term is an int, check against term_ids only.
if ( $ints && in_array( $object_term->term_id, $ints ) ) {
return true;
}
if ( $strs ) {
// Only check numeric strings against term_id, to avoid false matches due to type juggling.
$numeric_strs = array_map( 'intval', array_filter( $strs, 'is_numeric' ) );
if ( in_array( $object_term->term_id, $numeric_strs, true ) ) {
return true;
}
if ( in_array( $object_term->name, $strs ) ) return true;
if ( in_array( $object_term->slug, $strs ) ) return true;
}
}
return false;
}
/**
* Determine if the given object type is associated with the given taxonomy.
*
* @since 3.0.0
*
* @param string $object_type Object type string
* @param string $taxonomy Single taxonomy name
* @return bool True if object is associated with the taxonomy, otherwise false.
*/
function is_object_in_taxonomy($object_type, $taxonomy) {
$taxonomies = get_object_taxonomies($object_type);
if ( empty($taxonomies) )
return false;
if ( in_array($taxonomy, $taxonomies) )
return true;
return false;
}
/**
* Get an array of ancestor IDs for a given object.
*
* @since 3.1.0
* @since 4.1.0 Introduced the `$resource_type` argument.
*
* @param int $object_id Optional. The ID of the object. Default 0.
* @param string $object_type Optional. The type of object for which we'll be retrieving
* ancestors. Accepts a post type or a taxonomy name. Default empty.
* @param string $resource_type Optional. Type of resource $object_type is. Accepts 'post_type'
* or 'taxonomy'. Default empty.
* @return array An array of ancestors from lowest to highest in the hierarchy.
*/
function get_ancestors( $object_id = 0, $object_type = '', $resource_type = '' ) {
$object_id = (int) $object_id;
$ancestors = array();
if ( empty( $object_id ) ) {
/** This filter is documented in wp-includes/taxonomy.php */
return apply_filters( 'get_ancestors', $ancestors, $object_id, $object_type, $resource_type );
}
if ( ! $resource_type ) {
if ( is_taxonomy_hierarchical( $object_type ) ) {
$resource_type = 'taxonomy';
} elseif ( post_type_exists( $object_type ) ) {
$resource_type = 'post_type';
}
}
if ( 'taxonomy' === $resource_type ) {
$term = get_term($object_id, $object_type);
while ( ! is_wp_error($term) && ! empty( $term->parent ) && ! in_array( $term->parent, $ancestors ) ) {
$ancestors[] = (int) $term->parent;
$term = get_term($term->parent, $object_type);
}
} elseif ( 'post_type' === $resource_type ) {
$ancestors = get_post_ancestors($object_id);
}
/**
* Filter a given object's ancestors.
*
* @since 3.1.0
* @since 4.1.0 Introduced the `$resource_type` parameter.
*
* @param array $ancestors An array of object ancestors.
* @param int $object_id Object ID.
* @param string $object_type Type of object.
* @param string $resource_type Type of resource $object_type is.
*/
return apply_filters( 'get_ancestors', $ancestors, $object_id, $object_type, $resource_type );
}
/**
* Returns the term's parent's term_ID
*
* @since 3.1.0
*
* @param int $term_id
* @param string $taxonomy
*
* @return int|bool false on error
*/
function wp_get_term_taxonomy_parent_id( $term_id, $taxonomy ) {
$term = get_term( $term_id, $taxonomy );
if ( !$term || is_wp_error( $term ) )
return false;
return (int) $term->parent;
}
/**
* Checks the given subset of the term hierarchy for hierarchy loops.
* Prevents loops from forming and breaks those that it finds.
*
* Attached to the wp_update_term_parent filter.
*
* @since 3.1.0
*
* @param int $parent term_id of the parent for the term we're checking.
* @param int $term_id The term we're checking.
* @param string $taxonomy The taxonomy of the term we're checking.
*
* @return int The new parent for the term.
*/
function wp_check_term_hierarchy_for_loops( $parent, $term_id, $taxonomy ) {
// Nothing fancy here - bail
if ( !$parent )
return 0;
// Can't be its own parent
if ( $parent == $term_id )
return 0;
// Now look for larger loops
if ( !$loop = wp_find_hierarchy_loop( 'wp_get_term_taxonomy_parent_id', $term_id, $parent, array( $taxonomy ) ) )
return $parent; // No loop
// Setting $parent to the given value causes a loop
if ( isset( $loop[$term_id] ) )
return 0;
// There's a loop, but it doesn't contain $term_id. Break the loop.
foreach ( array_keys( $loop ) as $loop_member )
wp_update_term( $loop_member, $taxonomy, array( 'parent' => 0 ) );
return $parent;
}
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