www.gusucode.com > wordpress PHP博客系统英文版 v4.5.1PHP源码程序 > wordpress PHP博客系统英文版 v4.5.1/wordpress/wordpress/wp-includes/taxonomy.php
<?php
/**
* Core Taxonomy API
*
* @package WordPress
* @subpackage Taxonomy
*/
//
// 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 {@see 'init'} action. We must
* avoid registering rewrite rules before the {@see 'init'} action.
*
* @since 2.8.0
*
* @global WP_Rewrite $wp_rewrite The WordPress rewrite class.
*/
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' => true,
'_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' ),
) );
}
/**
* Retrieves a list of registered taxonomy names or objects.
*
* @since 3.0.0
*
* @global array $wp_taxonomies The registered taxonomies.
*
* @param array $args Optional. An array of `key => value` arguments to match against the taxonomy objects.
* Default empty array.
* @param string $output Optional. The type of output to return in the array. Accepts either taxonomy 'names'
* or 'objects'. Default 'names'.
* @param string $operator Optional. The logical operation to perform. Accepts 'and' or 'or'. 'or' means only
* one element from the array needs to match; 'and' means all elements must match.
* Default '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 the names or objects of the taxonomies which are registered for the requested object or object type, such as
* a post object or post type name.
*
* Example:
*
* $taxonomies = get_object_taxonomies( 'post' );
*
* This results in:
*
* Array( 'category', 'post_tag' )
*
* @since 2.3.0
*
* @global array $wp_taxonomies The registered taxonomies.
*
* @param array|string|WP_Post $object Name of the type of taxonomy object, or an object (row from posts)
* @param string $output Optional. The type of output to return in the array. Accepts either
* taxonomy 'names' or 'objects'. Default 'names'.
* @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
*
* @global array $wp_taxonomies The registered taxonomies.
*
* @param string $taxonomy Name of taxonomy object to return.
* @return object|false 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
*
* @global array $wp_taxonomies The registered 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;
}
/**
* Creates or modifies a taxonomy object.
*
* Note: Do not use before the {@see 'init'} hook.
*
* 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.
*
* @since 2.3.0
* @since 4.2.0 Introduced `show_in_quick_edit` argument.
* @since 4.4.0 The `show_ui` argument is now enforced on the term editing screen.
* @since 4.4.0 The `public` argument now controls whether the taxonomy can be queried on the front end.
* @since 4.5.0 Introduced `publicly_queryable` 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 {
* Optional. Array or query string of arguments for registering a taxonomy.
*
* @type string $label Name of the taxonomy shown in the menu. Usually plural. If not set,
* `$labels['name']` will be used.
* @type array $labels An array of labels for this taxonomy. By default, Tag labels are used for
* non-hierarchical taxonmies, and Category labels are used for hierarchical
* taxonomies. See accepted values in get_taxonomy_labels().
* Default empty array.
* @type string $description A short descriptive summary of what the taxonomy is for. Default empty.
* @type bool $public Whether a taxonomy is intended for use publicly either via
* the admin interface or by front-end users. The default settings
* of `$publicly_queryable`, `$show_ui`, and `$show_in_nav_menus`
* are inherited from `$public`.
* @type bool $publicly_queryable Whether the taxonomy is publicly queryable.
* If not set, the default is inherited from `$public`
* @type bool $hierarchical Whether the taxonomy is hierarchical. Default false.
* @type bool $show_ui Whether to generate and allow a UI for managing terms in this taxonomy in
* the admin. If not set, the default is inherited from `$public`
* (default true).
* @type bool $show_in_menu Whether to show the taxonomy in the admin menu. If true, the taxonomy is
* shown as a submenu of the object type menu. If false, no menu is shown.
* `$show_ui` must be true. If not set, default is inherited from `$show_ui`
* (default true).
* @type bool $show_in_nav_menus Makes this taxonomy available for selection in navigation menus. If not
* set, the default is inherited from `$public` (default true).
* @type bool $show_tagcloud Whether to list the taxonomy in the Tag Cloud Widget controls. If not set,
* the default is inherited from `$show_ui` (default true).
* @type bool $show_in_quick_edit Whether to show the taxonomy in the quick/bulk edit panel. It not set,
* the default is inherited from `$show_ui` (default true).
* @type bool $show_admin_column Whether to display a column for the taxonomy on its post type listing
* screens. Default false.
* @type bool|callable $meta_box_cb Provide a callback function for the meta box display. If not set,
* post_categories_meta_box() is used for hierarchical taxonomies, and
* post_tags_meta_box() is used for non-hierarchical. If false, no meta
* box is shown.
* @type array $capabilities {
* Array of capabilities for this taxonomy.
*
* @type string $manage_terms Default 'manage_categories'.
* @type string $edit_terms Default 'manage_categories'.
* @type string $delete_terms Default 'manage_categories'.
* @type string $assign_terms Default 'edit_posts'.
* }
* @type bool|array $rewrite {
* Triggers the handling of rewrites for this taxonomy. Default 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:
*
* @type string $slug Customize the permastruct slug. Default `$taxonomy` key.
* @type bool $with_front Should the permastruct be prepended with WP_Rewrite::$front. Default true.
* @type bool $hierarchical Either hierarchical rewrite tag or not. Default false.
* @type int $ep_mask Assign an endpoint mask. Default `EP_NONE`.
* }
* @type string $query_var Sets the query var key for this taxonomy. Default `$taxonomy` key. If
* false, a taxonomy cannot be loaded at `?{query_var}={term_slug}`. If a
* string, the query `?{query_var}={term_slug}` will be valid.
* @type callable $update_count_callback Works much like a hook, in that it will be called when the count is
* updated. Default _update_post_term_count() for taxonomies attached
* to post types, which confirms that the objects are published before
* counting them. Default _update_generic_term_count() for taxonomies
* attached to other object types, such as users.
* @type bool $_builtin This taxonomy is a "built-in" taxonomy. INTERNAL USE ONLY!
* Default false.
* }
* @return WP_Error|void WP_Error, if errors.
*/
function register_taxonomy( $taxonomy, $object_type, $args = array() ) {
global $wp_taxonomies, $wp;
if ( ! is_array( $wp_taxonomies ) )
$wp_taxonomies = array();
$args = wp_parse_args( $args );
/**
* Filter the arguments for registering a taxonomy.
*
* @since 4.4.0
*
* @param array $args Array of arguments for registering a taxonomy.
* @param string $taxonomy Taxonomy key.
* @param array $object_type Array of names of object types for the taxonomy.
*/
$args = apply_filters( 'register_taxonomy_args', $args, $taxonomy, (array) $object_type );
$defaults = array(
'labels' => array(),
'description' => '',
'public' => true,
'publicly_queryable' => null,
'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 = array_merge( $defaults, $args );
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 not set, default to the setting for public.
if ( null === $args['publicly_queryable'] ) {
$args['publicly_queryable'] = $args['public'];
}
// Non-publicly queryable taxonomies should not register query vars, except in the admin.
if ( false !== $args['query_var'] && ( is_admin() || false !== $args['publicly_queryable'] ) && ! 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'] );
} else {
// Force query_var to false for non-public taxonomies.
$args['query_var'] = false;
}
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 );
}
/**
* Unregisters a taxonomy.
*
* Can not be used to unregister built-in taxonomies.
*
* @since 4.5.0
*
* @global WP $wp Current WordPress environment instance.
* @global array $wp_taxonomies List of taxonomies.
*
* @param string $taxonomy Taxonomy name.
* @return bool|WP_Error True on success, WP_Error on failure or if the taxonomy doesn't exist.
*/
function unregister_taxonomy( $taxonomy ) {
if ( ! taxonomy_exists( $taxonomy ) ) {
return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy' ) );
}
$taxonomy_args = get_taxonomy( $taxonomy );
// Do not allow unregistering internal taxonomies.
if ( $taxonomy_args->_builtin ) {
return new WP_Error( 'invalid_taxonomy', __( 'Unregistering a built-in taxonomy is not allowed' ) );
}
global $wp, $wp_taxonomies;
// Remove query var.
if ( false !== $taxonomy_args->query_var ) {
$wp->remove_query_var( $taxonomy_args->query_var );
}
// Remove rewrite tags and permastructs.
if ( false !== $taxonomy_args->rewrite ) {
remove_rewrite_tag( "%$taxonomy%" );
remove_permastruct( $taxonomy );
}
// Unregister callback handling for metabox.
remove_filter( 'wp_ajax_add-' . $taxonomy, '_wp_ajax_add_hierarchical_term' );
// Remove the taxonomy.
unset( $wp_taxonomies[ $taxonomy ] );
/**
* Fires after a taxonomy is unregistered.
*
* @since 4.5.0
*
* @param string $taxonomy Taxonomy name.
*/
do_action( 'unregistered_taxonomy', $taxonomy );
return true;
}
/**
* 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.
* - no_terms - Default is "No tags"/"No categories", used in the posts and media list tables.
* - items_list_navigation - String for the table pagination hidden heading.
* - items_list - String for the table hidden heading.
*
* Above, the first default value is for non-hierarchical taxonomies (like tags) and the second one is for hierarchical taxonomies (like categories).
*
* @todo Better documentation for the labels array.
*
* @since 3.0.0
* @since 4.3.0 Added the `no_terms` label.
* @since 4.4.0 Added the `items_list_navigation` and `items_list` labels.
*
* @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.' ) ),
'no_terms' => array( __( 'No tags' ), __( 'No categories' ) ),
'items_list_navigation' => array( __( 'Tags list navigation' ), __( 'Categories list navigation' ) ),
'items_list' => array( __( 'Tags list' ), __( 'Categories list' ) ),
);
$nohier_vs_hier_defaults['menu_name'] = $nohier_vs_hier_defaults['name'];
$labels = _get_custom_object_labels( $tax, $nohier_vs_hier_defaults );
$taxonomy = $tax->name;
$default_labels = clone $labels;
/**
* Filter the labels of a specific taxonomy.
*
* The dynamic portion of the hook name, `$taxonomy`, refers to the taxonomy slug.
*
* @since 4.4.0
*
* @see get_taxonomy_labels() for the full list of taxonomy labels.
*
* @param object $labels Object with labels for the taxonomy as member variables.
*/
$labels = apply_filters( "taxonomy_labels_{$taxonomy}", $labels );
// Ensure that the filtered labels contain all required default values.
$labels = (object) array_merge( (array) $default_labels, (array) $labels );
return $labels;
}
/**
* Add an already registered taxonomy to an object type.
*
* @since 3.0.0
*
* @global array $wp_taxonomies The registered taxonomies.
*
* @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;
// Filter out empties.
$wp_taxonomies[ $taxonomy ]->object_type = array_filter( $wp_taxonomies[ $taxonomy ]->object_type );
return true;
}
/**
* Remove an already registered taxonomy from an object type.
*
* @since 3.7.0
*
* @global array $wp_taxonomies The registered taxonomies.
*
* @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( "', '", array_map( 'esc_sql', $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 );
}
/**
* 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.
*
* {@see '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
* $term.
*
* {@see 'get_$taxonomy'} hook - Takes two parameters the term Object and the taxonomy
* name. Must return term object. $taxonomy will be the taxonomy name, so for
* example, if 'category', it would be 'get_category' as the filter name. Useful
* for custom taxonomies or plugging into default taxonomies.
*
* @todo Better formatting for DocBlock
*
* @since 2.3.0
* @since 4.4.0 Converted to return a WP_Term object if `$output` is `OBJECT`.
* The `$taxonomy` parameter was made optional.
*
* @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|WP_Term|object $term If integer, term data will be fetched from the database, or from the cache if
* available. If stdClass object (as in the results of a database query), will apply
* filters and return a `WP_Term` object corresponding to the `$term` data. If `WP_Term`,
* will return `$term`.
* @param string $taxonomy Optional. Taxonomy name that $term is part of.
* @param string $output Constant OBJECT, ARRAY_A, or ARRAY_N
* @param string $filter Optional, default is raw or no WordPress defined filter will applied.
* @return array|WP_Term|WP_Error|null Object of the type specified by `$output` on success. When `$output` is 'OBJECT',
* a WP_Term instance is returned. If taxonomy does not exist, a WP_Error is
* returned. Returns null for miscellaneous failure.
*/
function get_term( $term, $taxonomy = '', $output = OBJECT, $filter = 'raw' ) {
if ( empty( $term ) ) {
return new WP_Error( 'invalid_term', __( 'Empty Term' ) );
}
if ( $taxonomy && ! taxonomy_exists( $taxonomy ) ) {
return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy' ) );
}
if ( $term instanceof WP_Term ) {
$_term = $term;
} elseif ( is_object( $term ) ) {
if ( empty( $term->filter ) || 'raw' === $term->filter ) {
$_term = sanitize_term( $term, $taxonomy, 'raw' );
$_term = new WP_Term( $_term );
} else {
$_term = WP_Term::get_instance( $term->term_id );
}
} else {
$_term = WP_Term::get_instance( $term, $taxonomy );
}
if ( is_wp_error( $_term ) ) {
return $_term;
} elseif ( ! $_term ) {
return null;
}
/**
* Filter a term.
*
* @since 2.3.0
* @since 4.4.0 `$_term` can now also be a WP_Term object.
*
* @param int|WP_Term $_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
* @since 4.4.0 `$_term` can now also be a WP_Term object.
*
* @param int|WP_Term $_term Term object or ID.
* @param string $taxonomy The taxonomy slug.
*/
$_term = apply_filters( "get_$taxonomy", $_term, $taxonomy );
// Bail if a filter callback has changed the type of the `$_term` object.
if ( ! ( $_term instanceof WP_Term ) ) {
return $_term;
}
// Sanitize term, according to the specified filter.
$_term->filter( $filter );
if ( $output == ARRAY_A ) {
return $_term->to_array();
} elseif ( $output == ARRAY_N ) {
return array_values( $_term->to_array() );
}
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 $value combinations exist, the Term will be returned.
*
* @todo Better formatting for DocBlock.
*
* @since 2.3.0
* @since 4.4.0 `$taxonomy` is optional if `$field` is 'term_taxonomy_id'. Converted to return
* a WP_Term object if `$output` is `OBJECT`.
*
* @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 $taxonomy Taxonomy name. Optional, if `$field` is 'term_taxonomy_id'.
* @param string $output Constant OBJECT, ARRAY_A, or ARRAY_N
* @param string $filter Optional, default is raw or no WordPress defined filter will applied.
* @return WP_Term|bool WP_Term instance on success. Will return false if `$taxonomy` does not exist
* or `$term` was not found.
*/
function get_term_by( $field, $value, $taxonomy = '', $output = OBJECT, $filter = 'raw' ) {
global $wpdb;
// 'term_taxonomy_id' lookups don't require taxonomy checks.
if ( 'term_taxonomy_id' !== $field && ! taxonomy_exists( $taxonomy ) ) {
return false;
}
$tax_clause = $wpdb->prepare( "AND tt.taxonomy = %s", $taxonomy );
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';
// No `taxonomy` clause when searching by 'term_taxonomy_id'.
$tax_clause = '';
} else {
$term = get_term( (int) $value, $taxonomy, $output, $filter );
if ( is_wp_error( $term ) || is_null( $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 $_field = %s", $value ) . " $tax_clause LIMIT 1" );
if ( ! $term )
return false;
// In the case of 'term_taxonomy_id', override the provided `$taxonomy` with whatever we find in the db.
if ( 'term_taxonomy_id' === $field ) {
$taxonomy = $term->taxonomy;
}
wp_cache_add( $term->term_id, $term, 'terms' );
return get_term( $term, $taxonomy, $output, $filter );
}
/**
* 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
*
* @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 $children;
}
/**
* Get sanitized Term field.
*
* The function is for contextual reasons and for simplicity of usage.
*
* @since 2.3.0
* @since 4.4.0 The `$taxonomy` parameter was made optional. `$term` can also now accept a WP_Term object.
*
* @see sanitize_term_field()
*
* @param string $field Term field to fetch.
* @param int|WP_Term $term Term ID or object.
* @param string $taxonomy Optional. Taxonomy Name. Default empty.
* @param string $context Optional, default is display. Look at sanitize_term_field() for available options.
* @return string|int|null|WP_Error 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 = 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, $term->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 string|int|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 {@see '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 {@see 'list_terms_exclusions'} filter passes the compiled exclusions along with
* the $args.
*
* The {@see 'get_terms_orderby'} filter passes the `ORDER BY` clause for the query
* along with the $args array.
*
* Prior to 4.5.0, the first parameter of `get_terms()` was a taxonomy or list of taxonomies:
*
* $terms = get_terms( 'post_tag', array(
* 'hide_empty' => false,
* ) );
*
* Since 4.5.0, taxonomies should be passed via the 'taxonomy' argument in the `$args` array:
*
* $terms = get_terms( array(
* 'taxonomy' => 'post_tag',
* 'hide_empty' => false,
* ) );
*
* @since 2.3.0
* @since 4.2.0 Introduced 'name' and 'childless' parameters.
* @since 4.4.0 Introduced the ability to pass 'term_id' as an alias of 'id' for the `orderby` parameter.
* Introduced the 'meta_query' and 'update_term_meta_cache' parameters. Converted to return
* a list of WP_Term objects.
* @since 4.5.0 Changed the function signature so that the `$args` array can be provided as the first parameter.
* Introduced 'meta_key' and 'meta_value' parameters. Introduced the ability to order results by metadata.
*
* @internal The `$deprecated` parameter is parsed for backward compatibility only.
*
* @global wpdb $wpdb WordPress database abstraction object.
* @global array $wp_filter
*
* @param array|string $args {
* Optional. Array or string of arguments to get terms.
*
* @type string|array $taxonomy Taxonomy name, or array of taxonomies, to which results should
* be limited.
* @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 $include param,
* 'meta_value', 'meta_value_num', the value of `$meta_key`, the array
* keys of `$meta_query`, or 'none' to omit the ORDER BY clause.
* 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 complete
* term objects), 'ids' (returns an array of ids), 'id=>parent' (returns
* an associative array with ids as keys, parent term IDs as values),
* 'names' (returns an array of term names), 'count' (returns the number
* of matching terms), 'id=>name' (returns an associative array with ids
* as keys, term names as values), or 'id=>slug' (returns an associative
* array with ids as keys, term slugs as values). 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'.
* @type bool $update_term_meta_cache Whether to prime meta caches for matched terms. Default true.
* @type array $meta_query Meta query clauses to limit retrieved terms by.
* See `WP_Meta_Query`. Default empty.
* @type string $meta_key Limit terms to those matching a specific metadata key. Can be used in
* conjunction with `$meta_value`.
* @type string $meta_value Limit terms to those matching a specific metadata value. Usually used
* in conjunction with `$meta_key`.
* }
* @param array $deprecated Argument array, when using the legacy function parameter format. If present, this
* parameter will be interpreted as `$args`, and the first function parameter will
* be parsed as a taxonomy or array of taxonomies.
* @return array|int|WP_Error List of WP_Term instances and their children. Will return WP_Error, if any of $taxonomies
* do not exist.
*/
function get_terms( $args = array(), $deprecated = '' ) {
global $wpdb;
$defaults = array(
'taxonomy' => null,
'orderby' => 'name',
'order' => 'ASC',
'hide_empty' => true,
'include' => array(),
'exclude' => array(),
'exclude_tree' => array(),
'number' => '',
'offset' => '',
'fields' => 'all',
'name' => '',
'slug' => '',
'hierarchical' => true,
'search' => '',
'name__like' => '',
'description__like' => '',
'pad_counts' => false,
'get' => '',
'child_of' => 0,
'parent' => '',
'childless' => false,
'cache_domain' => 'core',
'update_term_meta_cache' => true,
'meta_query' => ''
);
/*
* Legacy argument format ($taxonomy, $args) takes precedence.
*
* We detect legacy argument format by checking if
* (a) a second non-empty parameter is passed, or
* (b) the first parameter shares no keys with the default array (ie, it's a list of taxonomies)
*/
$key_intersect = array_intersect_key( $defaults, (array) $args );
$do_legacy_args = $deprecated || empty( $key_intersect );
$taxonomies = null;
if ( $do_legacy_args ) {
$taxonomies = (array) $args;
$args = $deprecated;
} elseif ( isset( $args['taxonomy'] ) && null !== $args['taxonomy'] ) {
$taxonomies = (array) $args['taxonomy'];
unset( $args['taxonomy'] );
}
$empty_array = array();
if ( $taxonomies ) {
foreach ( $taxonomies as $taxonomy ) {
if ( ! taxonomy_exists($taxonomy) ) {
return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy' ) );
}
}
}
/**
* Filter the terms query default arguments.
*
* Use 'get_terms_args' to filter the passed arguments.
*
* @since 4.4.0
*
* @param array $defaults An array of default get_terms() arguments.
* @param array $taxonomies An array of taxonomies.
*/
$args = wp_parse_args( $args, apply_filters( 'get_terms_defaults', $defaults, $taxonomies ) );
$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;
if ( $taxonomies ) {
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 get_terms() 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;
}
}
$_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 || 'term_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_conditions = array();
if ( $taxonomies ) {
$where_conditions[] = "tt.taxonomy IN ('" . implode("', '", array_map( 'esc_sql', $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 ) ) {
$where_conditions[] = 't.term_id IN ( ' . $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 = '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 ) ) {
// Must do string manipulation here for backward compatibility with filter.
$where_conditions[] = preg_replace( '/^\s*AND\s*/', '', $exclusions );
}
if ( ! empty( $args['name'] ) ) {
$names = (array) $args['name'];
foreach ( $names as &$_name ) {
// `sanitize_term_field()` returns slashed data.
$_name = stripslashes( sanitize_term_field( 'name', $_name, 0, reset( $taxonomies ), 'db' ) );
}
$where_conditions[] = "t.name IN ('" . implode( "', '", array_map( 'esc_sql', $names ) ) . "')";
}
if ( ! empty( $args['slug'] ) ) {
if ( is_array( $args['slug'] ) ) {
$slug = array_map( 'sanitize_title', $args['slug'] );
$where_conditions[] = "t.slug IN ('" . implode( "', '", $slug ) . "')";
} else {
$slug = sanitize_title( $args['slug'] );
$where_conditions[] = "t.slug = '$slug'";
}
}
if ( ! empty( $args['name__like'] ) ) {
$where_conditions[] = $wpdb->prepare( "t.name LIKE %s", '%' . $wpdb->esc_like( $args['name__like'] ) . '%' );
}
if ( ! empty( $args['description__like'] ) ) {
$where_conditions[] = $wpdb->prepare( "tt.description LIKE %s", '%' . $wpdb->esc_like( $args['description__like'] ) . '%' );
}
if ( '' !== $parent ) {
$parent = (int) $parent;
$where_conditions[] = "tt.parent = '$parent'";
}
$hierarchical = $args['hierarchical'];
if ( 'count' == $args['fields'] ) {
$hierarchical = false;
}
if ( $args['hide_empty'] && !$hierarchical ) {
$where_conditions[] = '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_conditions[] = $wpdb->prepare( '((t.name LIKE %s) OR (t.slug LIKE %s))', $like, $like );
}
// Meta query support.
$join = '';
$distinct = '';
$mquery = new WP_Meta_Query();
$mquery->parse_query_vars( $args );
$mq_sql = $mquery->get_sql( 'term', 't', 'term_id' );
$meta_clauses = $mquery->get_clauses();
if ( ! empty( $meta_clauses ) ) {
$join .= $mq_sql['join'];
$where_conditions[] = preg_replace( '/^\s*AND\s*/', '', $mq_sql['where'] );
$distinct .= "DISTINCT";
// 'orderby' support.
$allowed_keys = array();
$primary_meta_key = null;
$primary_meta_query = reset( $meta_clauses );
if ( ! empty( $primary_meta_query['key'] ) ) {
$primary_meta_key = $primary_meta_query['key'];
$allowed_keys[] = $primary_meta_key;
}
$allowed_keys[] = 'meta_value';
$allowed_keys[] = 'meta_value_num';
$allowed_keys = array_merge( $allowed_keys, array_keys( $meta_clauses ) );
if ( ! empty( $args['orderby'] ) && in_array( $args['orderby'], $allowed_keys ) ) {
switch( $args['orderby'] ) {
case $primary_meta_key:
case 'meta_value':
if ( ! empty( $primary_meta_query['type'] ) ) {
$orderby = "ORDER BY CAST({$primary_meta_query['alias']}.meta_value AS {$primary_meta_query['cast']})";
} else {
$orderby = "ORDER BY {$primary_meta_query['alias']}.meta_value";
}
break;
case 'meta_value_num':
$orderby = "ORDER BY {$primary_meta_query['alias']}.meta_value+0";
break;
default:
if ( array_key_exists( $args['orderby'], $meta_clauses ) ) {
// $orderby corresponds to a meta_query clause.
$meta_clause = $meta_clauses[ $args['orderby'] ];
$orderby = "ORDER BY CAST({$meta_clause['alias']}.meta_value AS {$meta_clause['cast']})";
}
break;
}
}
}
$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";
$where = implode( ' AND ', $where_conditions );
$pieces = array( 'fields', 'join', 'where', 'distinct', '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' ] : '';
$distinct = isset( $clauses[ 'distinct' ] ) ? $clauses[ 'distinct' ] : '';
$orderby = isset( $clauses[ 'orderby' ] ) ? $clauses[ 'orderby' ] : '';
$order = isset( $clauses[ 'order' ] ) ? $clauses[ 'order' ] : '';
$limits = isset( $clauses[ 'limits' ] ) ? $clauses[ 'limits' ] : '';
if ( $where ) {
$where = "WHERE $where";
}
$query = "SELECT $distinct $fields FROM $wpdb->terms AS t $join $where $orderby $order $limits";
// $args can be anything. Only use the args defined in defaults to compute the key.
$key = md5( serialize( wp_array_slice_assoc( $args, array_keys( $defaults ) ) ) . serialize( $taxonomies ) . $query );
$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 ) {
if ( 'all' === $_fields ) {
$cache = array_map( 'get_term', $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 get_terms() arguments.
*/
return apply_filters( 'get_terms', $cache, $taxonomies, $args );
}
if ( 'count' == $_fields ) {
return $wpdb->get_var( $query );
}
$terms = $wpdb->get_results($query);
if ( 'all' == $_fields ) {
update_term_cache( $terms );
}
// Prime termmeta cache.
if ( $args['update_term_meta_cache'] ) {
$term_ids = wp_list_pluck( $terms, 'term_id' );
update_termmeta_cache( $term_ids );
}
if ( empty($terms) ) {
wp_cache_add( $cache_key, array(), 'terms', DAY_IN_SECONDS );
/** This filter is documented in wp-includes/taxonomy.php */
return apply_filters( 'get_terms', array(), $taxonomies, $args );
}
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;
}
// Hierarchical queries are not limited, so 'offset' and 'number' must be handled now.
if ( $hierarchical && $number && is_array( $terms ) ) {
if ( $offset >= count( $terms ) ) {
$terms = array();
} else {
$terms = array_slice( $terms, $offset, $number, true );
}
}
wp_cache_add( $cache_key, $terms, 'terms', DAY_IN_SECONDS );
if ( 'all' === $_fields ) {
$terms = array_map( 'get_term', $terms );
}
/** This filter is documented in wp-includes/taxonomy.php */
return apply_filters( 'get_terms', $terms, $taxonomies, $args );
}
/**
* Adds metadata to a term.
*
* @since 4.4.0
*
* @param int $term_id Term ID.
* @param string $meta_key Metadata name.
* @param mixed $meta_value Metadata value.
* @param bool $unique Optional. Whether to bail if an entry with the same key is found for the term.
* Default false.
* @return int|WP_Error|bool Meta ID on success. WP_Error when term_id is ambiguous between taxonomies.
* False on failure.
*/
function add_term_meta( $term_id, $meta_key, $meta_value, $unique = false ) {
// Bail if term meta table is not installed.
if ( get_option( 'db_version' ) < 34370 ) {
return false;
}
if ( wp_term_is_shared( $term_id ) ) {
return new WP_Error( 'ambiguous_term_id', __( 'Term meta cannot be added to terms that are shared between taxonomies.'), $term_id );
}
$added = add_metadata( 'term', $term_id, $meta_key, $meta_value, $unique );
// Bust term query cache.
if ( $added ) {
wp_cache_set( 'last_changed', microtime(), 'terms' );
}
return $added;
}
/**
* Removes metadata matching criteria from a term.
*
* @since 4.4.0
*
* @param int $term_id Term ID.
* @param string $meta_key Metadata name.
* @param mixed $meta_value Optional. Metadata value. If provided, rows will only be removed that match the value.
* @return bool True on success, false on failure.
*/
function delete_term_meta( $term_id, $meta_key, $meta_value = '' ) {
// Bail if term meta table is not installed.
if ( get_option( 'db_version' ) < 34370 ) {
return false;
}
$deleted = delete_metadata( 'term', $term_id, $meta_key, $meta_value );
// Bust term query cache.
if ( $deleted ) {
wp_cache_set( 'last_changed', microtime(), 'terms' );
}
return $deleted;
}
/**
* Retrieves metadata for a term.
*
* @since 4.4.0
*
* @param int $term_id Term ID.
* @param string $key Optional. The meta key to retrieve. If no key is provided, fetches all metadata for the term.
* @param bool $single Whether to return a single value. If false, an array of all values matching the
* `$term_id`/`$key` pair will be returned. Default: false.
* @return mixed If `$single` is false, an array of metadata values. If `$single` is true, a single metadata value.
*/
function get_term_meta( $term_id, $key = '', $single = false ) {
// Bail if term meta table is not installed.
if ( get_option( 'db_version' ) < 34370 ) {
return false;
}
return get_metadata( 'term', $term_id, $key, $single );
}
/**
* Updates term metadata.
*
* Use the `$prev_value` parameter to differentiate between meta fields with the same key and term ID.
*
* If the meta field for the term does not exist, it will be added.
*
* @since 4.4.0
*
* @param int $term_id Term ID.
* @param string $meta_key Metadata key.
* @param mixed $meta_value Metadata value.
* @param mixed $prev_value Optional. Previous value to check before removing.
* @return int|WP_Error|bool Meta ID if the key didn't previously exist. True on successful update.
* WP_Error when term_id is ambiguous between taxonomies. False on failure.
*/
function update_term_meta( $term_id, $meta_key, $meta_value, $prev_value = '' ) {
// Bail if term meta table is not installed.
if ( get_option( 'db_version' ) < 34370 ) {
return false;
}
if ( wp_term_is_shared( $term_id ) ) {
return new WP_Error( 'ambiguous_term_id', __( 'Term meta cannot be added to terms that are shared between taxonomies.'), $term_id );
}
$updated = update_metadata( 'term', $term_id, $meta_key, $meta_value, $prev_value );
// Bust term query cache.
if ( $updated ) {
wp_cache_set( 'last_changed', microtime(), 'terms' );
}
return $updated;
}
/**
* Updates metadata cache for list of term IDs.
*
* Performs SQL query to retrieve all metadata for the terms matching `$term_ids` and stores them in the cache.
* Subsequent calls to `get_term_meta()` will not need to query the database.
*
* @since 4.4.0
*
* @param array $term_ids List of term IDs.
* @return array|false Returns false if there is nothing to update. Returns an array of metadata on success.
*/
function update_termmeta_cache( $term_ids ) {
// Bail if term meta table is not installed.
if ( get_option( 'db_version' ) < 34370 ) {
return;
}
return update_meta_cache( 'term', $term_ids );
}
/**
* 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 `$term2` is a child of `$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 $context Optional. Context in which to sanitize the term. Accepts 'edit', 'db',
* 'display', 'attribute', or 'js'. Default 'display'.
* @return array|object Term with all fields sanitized.
*/
function sanitize_term($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
*
* @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 $context Context in which to sanitize the term field. Accepts 'edit', 'db', 'display',
* 'attribute', or 'js'.
* @return mixed Sanitized field.
*/
function sanitize_term_field($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 Optional. Array of arguments that get passed to {@see get_terms()}.
* Default empty array.
* @return array|int|WP_Error Number of terms in that taxonomy or WP_Error if the 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.
*
* Metadata associated with the term will be deleted.
*
* @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. Array of arguments to override the default term ID. Default empty array.
*
* @type int $default The term ID to make the default term. This will only override
* the terms found if there is only one term found. Any other and
* the found terms are used.
* @type bool $force_default Optional. Whether to force the supplied term as default to be
* assigned even if the object was not going to be term-less.
* Default false.
* }
* @return bool|int|WP_Error True on success, false if term does not exist. Zero on attempted
* deletion of default Category. WP_Error if the taxonomy does not exist.
*/
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 );
}
// Get the term before deleting it or its term relationships so we can pass to actions below.
$deleted_term = get_term( $term, $taxonomy );
$object_ids = (array) $wpdb->get_col( $wpdb->prepare( "SELECT object_id FROM $wpdb->term_relationships WHERE term_taxonomy_id = %d", $tt_id ) );
foreach ( $object_ids as $object_id ) {
$terms = wp_get_object_terms( $object_id, $taxonomy, array( 'fields' => 'ids', 'orderby' => 'none' ) );
if ( 1 == count($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_id, $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( $object_ids, $object_type );
$term_meta_ids = $wpdb->get_col( $wpdb->prepare( "SELECT meta_id FROM $wpdb->termmeta WHERE term_id = %d ", $term ) );
foreach ( $term_meta_ids as $mid ) {
delete_metadata_by_mid( 'term', $mid );
}
/**
* 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, $taxonomy);
/**
* Fires after a term is deleted from the database and the cache is cleaned.
*
* @since 2.5.0
* @since 4.5.0 Introduced the `$object_ids` argument.
*
* @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.
* @param array $object_ids List of term object IDs.
*/
do_action( 'delete_term', $term, $tt_id, $taxonomy, $deleted_term, $object_ids );
/**
* Fires after a term in a specific taxonomy is deleted.
*
* The dynamic portion of the hook name, `$taxonomy`, refers to the specific
* taxonomy the term belonged to.
*
* @since 2.3.0
* @since 4.5.0 Introduced the `$object_ids` argument.
*
* @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. WP_Error otherwise.
* @param array $object_ids List of term object IDs.
*/
do_action( "delete_$taxonomy", $term, $tt_id, $deleted_term, $object_ids );
return true;
}
/**
* Deletes one existing category.
*
* @since 2.0.0
*
* @param int $cat_ID
* @return bool|int|WP_Error 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 `$parent` argument.
* @since 4.4.0 Introduced `$meta_query` and `$update_term_meta_cache` arguments. When `$fields` is 'all' or
* 'all_with_object_id', an array of `WP_Term` objects will be returned.
*
* @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.
* @type bool $update_term_meta_cache Whether to prime termmeta cache for matched terms. Only applies when
* `$fields` is 'all', 'all_with_object_id', or 'term_id'. Default true.
* @type array $meta_query Meta query clauses to limit retrieved terms by. See `WP_Meta_Query`.
* Default empty.
* }
* @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' => '',
'update_term_meta_cache' => true,
'meta_query' => '',
);
$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";
} elseif ( in_array( $orderby, array( 'count', 'parent', 'taxonomy', 'term_taxonomy_id' ) ) ) {
$orderby = "tt.$orderby";
} elseif ( 'term_order' === $orderby ) {
$orderby = 'tr.term_order';
} elseif ( '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("', '", array_map( 'esc_sql', $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'] );
}
// Meta query support.
$meta_query_join = '';
if ( ! empty( $args['meta_query'] ) ) {
$mquery = new WP_Meta_Query( $args['meta_query'] );
$mq_sql = $mquery->get_sql( 'term', 't', 'term_id' );
$meta_query_join .= $mq_sql['join'];
// Strip leading AND.
$where[] = preg_replace( '/^\s*AND/', '', $mq_sql['where'] );
}
$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 $meta_query_join WHERE $where $orderby $order";
$objects = false;
if ( 'all' == $fields || 'all_with_object_id' == $fields ) {
$_terms = $wpdb->get_results( $query );
$object_id_index = array();
foreach ( $_terms as $key => $term ) {
$term = sanitize_term( $term, $taxonomy, 'raw' );
$_terms[ $key ] = $term;
if ( isset( $term->object_id ) ) {
$object_id_index[ $key ] = $term->object_id;
}
}
update_term_cache( $_terms );
$_terms = array_map( 'get_term', $_terms );
// Re-add the object_id data, which is lost when fetching terms from cache.
if ( 'all_with_object_id' === $fields ) {
foreach ( $_terms as $key => $_term ) {
if ( isset( $object_id_index[ $key ] ) ) {
$_term->object_id = $object_id_index[ $key ];
}
}
}
$terms = array_merge( $terms, $_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.
}
}
// Update termmeta cache, if necessary.
if ( $args['update_term_meta_cache'] && ( 'all' === $fields || 'all_with_object_ids' === $fields || 'term_id' === $fields ) ) {
if ( 'term_id' === $fields ) {
$term_ids = $fields;
} else {
$term_ids = wp_list_pluck( $terms, 'term_id' );
}
update_termmeta_cache( $term_ids );
}
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;
// Coerce null description to strings, to avoid database errors.
$args['description'] = (string) $args['description'];
$args = sanitize_term($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.
*/
$name_matches = get_terms( $taxonomy, array(
'name' => $name,
'hide_empty' => false,
) );
/*
* The `name` match in `get_terms()` doesn't differentiate accented characters,
* so we do a stricter comparison here.
*/
$name_match = null;
if ( $name_matches ) {
foreach ( $name_matches as $_match ) {
if ( strtolower( $name ) === strtolower( $_match->name ) ) {
$name_match = $_match;
break;
}
}
}
if ( $name_match ) {
$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 provided already exists with this parent.' ), $existing_term->term_id );
}
} else {
return new WP_Error( 'term_exists', __( 'A term with the name provided 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
*
* @param int $term_id Term ID.
* @param int $tt_id Term taxonomy ID.
* @param string $taxonomy Taxonomy slug.
*/
do_action( 'created_term', $term_id, $tt_id, $taxonomy );
/**
* Fires after a new term in a specific taxonomy is created, and after the term
* cache has been cleaned.
*
* The dynamic portion of the hook name, `$taxonomy`, refers to the taxonomy slug.
*
* @since 2.3.0
*
* @param int $term_id Term ID.
* @param int $tt_id Term taxonomy ID.
*/
do_action( "created_$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
*
* @global wpdb $wpdb The WordPress database abstraction object.
*
* @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 Term taxonomy IDs of the affected terms.
*/
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 Term taxonomy IDs of the affected terms.
*/
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 ) );
wp_cache_delete( $object_id, $taxonomy . '_relationships' );
/**
* 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 to.
* @return string Will return a true unique slug.
*/
function wp_unique_term_slug( $slug, $term ) {
global $wpdb;
$needs_suffix = true;
$original_slug = $slug;
// As of 4.1, duplicate slugs are allowed as long as they're in different taxonomies.
if ( ! term_exists( $slug ) || get_option( 'db_version' ) >= 30133 && ! get_term_by( 'slug', $slug, $term->taxonomy ) ) {
$needs_suffix = false;
}
/*
* If the taxonomy supports hierarchy and the term has a parent, make the slug unique
* by incorporating parent slugs.
*/
$parent_suffix = '';
if ( $needs_suffix && 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;
$parent_suffix .= '-' . $parent_term->slug;
if ( ! term_exists( $slug . $parent_suffix ) ) {
break;
}
if ( empty($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.
/**
* Filter whether the proposed unique term slug is bad.
*
* @since 4.3.0
*
* @param bool $needs_suffix Whether the slug needs to be made unique with a suffix.
* @param string $slug The slug.
* @param object $term Term object.
*/
if ( apply_filters( 'wp_unique_term_slug_is_bad_slug', $needs_suffix, $slug, $term ) ) {
if ( $parent_suffix ) {
$slug .= $parent_suffix;
} else {
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;
}
}
}
/**
* Filter the unique term slug.
*
* @since 4.3.0
*
* @param string $slug Unique term slug.
* @param object $term Term object.
* @param string $original_slug Slug originally passed to the function for testing.
*/
return apply_filters( 'wp_unique_term_slug', $slug, $term, $original_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 Optional. Array of get_terms() arguments. Default empty array.
* @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 );
if ( is_wp_error( $term ) ) {
return $term;
}
if ( ! $term ) {
return new WP_Error( 'invalid_term', __( 'Empty Term' ) );
}
$term = (array) $term->data;
// 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 = (int) $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
*
* @staticvar bool $_defer
*
* @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
*
* @staticvar array $_deferred
*
* @param int|array $terms The term_taxonomy_id of the terms.
* @param string $taxonomy The context of the term.
* @param bool $do_deferred Whether to flush the deferred term counts too. Default false.
* @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 true 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
*
* @global bool $_wp_suspend_cache_invalidation
*
* @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) {
global $_wp_suspend_cache_invalidation;
if ( ! empty( $_wp_suspend_cache_invalidation ) ) {
return;
}
if ( !is_array($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.
* @global bool $_wp_suspend_cache_invalidation
*
* @param int|array $ids Single or list of Term IDs.
* @param string $taxonomy Optional. Can be empty and will assume `tt_ids`, else will use for context.
* Default empty.
* @param bool $clean_taxonomy Optional. Whether to clean taxonomy wide caches (true), or just individual
* term object caches (false). Default true.
*/
function clean_term_cache($ids, $taxonomy = '', $clean_taxonomy = true) {
global $wpdb, $_wp_suspend_cache_invalidation;
if ( ! empty( $_wp_suspend_cache_invalidation ) ) {
return;
}
if ( !is_array($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, 'terms' );
}
$taxonomies = array_unique($taxonomies);
} else {
$taxonomies = array($taxonomy);
foreach ( $taxonomies as $taxonomy ) {
foreach ( $ids as $id ) {
wp_cache_delete( $id, 'terms' );
}
}
}
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
* @since 4.5.0 Added the `$clean_taxonomy` parameter.
*
* @param array $ids An array of term IDs.
* @param string $taxonomy Taxonomy slug.
* @param bool $clean_taxonomy Whether or not to clean taxonomy-wide caches
*/
do_action( 'clean_term_cache', $ids, $taxonomy, $clean_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|mixed 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 ) {
return wp_cache_get( $id, "{$taxonomy}_relationships" );
}
/**
* 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 $object_type The taxonomy object type.
* @return void|false False if all of the terms in `$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',
'orderby' => 'name',
'update_term_meta_cache' => false,
) );
$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. Default empty.
*/
function update_term_cache( $terms, $taxonomy = '' ) {
foreach ( (array) $terms as $term ) {
// Create a copy in case the array was passed by reference.
$_term = clone $term;
// Object ID should not be cached.
unset( $_term->object_id );
wp_cache_add( $term->term_id, $_term, 'terms' );
}
}
//
// Private
//
/**
* Retrieves children of taxonomy as Term IDs.
*
* @ignore
* @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 Optional. 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. Default empty array.
* @return array|WP_Error 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 objects, passed by reference.
* @param string $taxonomy Term context.
*/
function _pad_term_counts( &$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, $taxonomy->name );
}
}
/**
* Create a new term for a term_taxonomy item that currently shares its term
* with another term_taxonomy.
*
* @ignore
* @since 4.2.0
* @since 4.3.0 Introduced `$record` parameter. Also, `$term_id` and
* `$term_taxonomy_id` can now accept objects.
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param int|object $term_id ID of the shared term, or the shared term object.
* @param int|object $term_taxonomy_id ID of the term_taxonomy item to receive a new term, or the term_taxonomy object
* (corresponding to a row from the term_taxonomy table).
* @param bool $record Whether to record data about the split term in the options table. The recording
* process has the potential to be resource-intensive, so during batch operations
* it can be beneficial to skip inline recording and do it just once, after the
* batch is processed. Only set this to `false` if you know what you are doing.
* Default: true.
* @return int|WP_Error When the current term does not need to be split (or cannot be split on the current
* database schema), `$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, $record = true ) {
global $wpdb;
if ( is_object( $term_id ) ) {
$shared_term = $term_id;
$term_id = intval( $shared_term->term_id );
}
if ( is_object( $term_taxonomy_id ) ) {
$term_taxonomy = $term_taxonomy_id;
$term_taxonomy_id = intval( $term_taxonomy->term_taxonomy_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;
}
/*
* Verify that the term_taxonomy_id passed to the function is actually associated with the term_id.
* If there's a mismatch, it may mean that the term is already split. Return the actual term_id from the db.
*/
$check_term_id = $wpdb->get_var( $wpdb->prepare( "SELECT term_id FROM $wpdb->term_taxonomy WHERE term_taxonomy_id = %d", $term_taxonomy_id ) );
if ( $check_term_id != $term_id ) {
return $check_term_id;
}
// Pull up data about the currently shared slug, which we'll use to populate the new one.
if ( empty( $shared_term ) ) {
$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.
if ( empty( $term_taxonomy ) ) {
$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 parent = %d AND taxonomy = %s", $term_id, $term_taxonomy->taxonomy ) );
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()}.
if ( $record ) {
$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 );
}
// If we've just split the final shared term, set the "finished" flag.
$shared_terms_exist = $wpdb->get_results(
"SELECT tt.term_id, t.*, count(*) as term_tt_count FROM {$wpdb->term_taxonomy} tt
LEFT JOIN {$wpdb->terms} t ON t.term_id = tt.term_id
GROUP BY t.term_id
HAVING term_tt_count > 1
LIMIT 1"
);
if ( ! $shared_terms_exist ) {
update_option( 'finished_splitting_shared_terms', true );
}
/**
* 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;
}
/**
* Splits a batch of shared taxonomy terms.
*
* @since 4.3.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*/
function _wp_batch_split_terms() {
global $wpdb;
$lock_name = 'term_split.lock';
// Try to lock.
$lock_result = $wpdb->query( $wpdb->prepare( "INSERT IGNORE INTO `$wpdb->options` ( `option_name`, `option_value`, `autoload` ) VALUES (%s, %s, 'no') /* LOCK */", $lock_name, time() ) );
if ( ! $lock_result ) {
$lock_result = get_option( $lock_name );
// Bail if we were unable to create a lock, or if the existing lock is still valid.
if ( ! $lock_result || ( $lock_result > ( time() - HOUR_IN_SECONDS ) ) ) {
wp_schedule_single_event( time() + ( 5 * MINUTE_IN_SECONDS ), 'wp_split_shared_term_batch' );
return;
}
}
// Update the lock, as by this point we've definitely got a lock, just need to fire the actions.
update_option( $lock_name, time() );
// Get a list of shared terms (those with more than one associated row in term_taxonomy).
$shared_terms = $wpdb->get_results(
"SELECT tt.term_id, t.*, count(*) as term_tt_count FROM {$wpdb->term_taxonomy} tt
LEFT JOIN {$wpdb->terms} t ON t.term_id = tt.term_id
GROUP BY t.term_id
HAVING term_tt_count > 1
LIMIT 10"
);
// No more terms, we're done here.
if ( ! $shared_terms ) {
update_option( 'finished_splitting_shared_terms', true );
delete_option( $lock_name );
return;
}
// Shared terms found? We'll need to run this script again.
wp_schedule_single_event( time() + ( 2 * MINUTE_IN_SECONDS ), 'wp_split_shared_term_batch' );
// Rekey shared term array for faster lookups.
$_shared_terms = array();
foreach ( $shared_terms as $shared_term ) {
$term_id = intval( $shared_term->term_id );
$_shared_terms[ $term_id ] = $shared_term;
}
$shared_terms = $_shared_terms;
// Get term taxonomy data for all shared terms.
$shared_term_ids = implode( ',', array_keys( $shared_terms ) );
$shared_tts = $wpdb->get_results( "SELECT * FROM {$wpdb->term_taxonomy} WHERE `term_id` IN ({$shared_term_ids})" );
// Split term data recording is slow, so we do it just once, outside the loop.
$split_term_data = get_option( '_split_terms', array() );
$skipped_first_term = $taxonomies = array();
foreach ( $shared_tts as $shared_tt ) {
$term_id = intval( $shared_tt->term_id );
// Don't split the first tt belonging to a given term_id.
if ( ! isset( $skipped_first_term[ $term_id ] ) ) {
$skipped_first_term[ $term_id ] = 1;
continue;
}
if ( ! isset( $split_term_data[ $term_id ] ) ) {
$split_term_data[ $term_id ] = array();
}
// Keep track of taxonomies whose hierarchies need flushing.
if ( ! isset( $taxonomies[ $shared_tt->taxonomy ] ) ) {
$taxonomies[ $shared_tt->taxonomy ] = 1;
}
// Split the term.
$split_term_data[ $term_id ][ $shared_tt->taxonomy ] = _split_shared_term( $shared_terms[ $term_id ], $shared_tt, false );
}
// Rebuild the cached hierarchy for each affected taxonomy.
foreach ( array_keys( $taxonomies ) as $tax ) {
delete_option( "{$tax}_children" );
_get_term_hierarchy( $tax );
}
update_option( '_split_terms', $split_term_data );
delete_option( $lock_name );
}
/**
* In order to avoid the _wp_batch_split_terms() job being accidentally removed,
* check that it's still scheduled while we haven't finished splitting terms.
*
* @ignore
* @since 4.3.0
*/
function _wp_check_for_scheduled_split_terms() {
if ( ! get_option( 'finished_splitting_shared_terms' ) && ! wp_next_scheduled( 'wp_split_shared_term_batch' ) ) {
wp_schedule_single_event( time() + MINUTE_IN_SECONDS, 'wp_split_shared_term_batch' );
}
}
/**
* 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
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @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 );
}
}
}
/**
* If the term being split is a nav_menu, change associations.
*
* @ignore
* @since 4.3.0
*
* @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_nav_menu_terms( $term_id, $new_term_id, $term_taxonomy_id, $taxonomy ) {
if ( 'nav_menu' !== $taxonomy ) {
return;
}
// Update menu locations.
$locations = get_nav_menu_locations();
foreach ( $locations as $location => $menu_id ) {
if ( $term_id == $menu_id ) {
$locations[ $location ] = $new_term_id;
}
}
set_theme_mod( 'nav_menu_locations', $locations );
}
/**
* 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 int|false 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;
}
/**
* Determine whether a term is shared between multiple taxonomies.
*
* Shared taxonomy terms began to be split in 4.3, but failed cron tasks or other delays in upgrade routines may cause
* shared terms to remain.
*
* @since 4.4.0
*
* @param int $term_id
* @return bool
*/
function wp_term_is_shared( $term_id ) {
global $wpdb;
if ( get_option( 'finished_splitting_shared_terms' ) ) {
return false;
}
$tt_count = $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->term_taxonomy WHERE term_id = %d", $term_id ) );
return $tt_count > 1;
}
/**
* Generate a permalink for a taxonomy term archive.
*
* @since 2.5.0
*
* @global WP_Rewrite $wp_rewrite
*
* @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 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.
* }
*/
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 {
* Optional. Arguments about how to format the list of taxonomies. Default empty array.
*
* @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. Default null.
* @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, array( 'update_term_meta_cache' => false ) );
wp_cache_set( $object_id, $object_terms, "{$taxonomy}_relationships" );
}
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;
}
return in_array( $taxonomy, $taxonomies );
}
/**
* Get an array of ancestor IDs for a given object.
*
* @since 3.1.0
* @since 4.1.0 Introduced the `$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 4.1.1 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 Term ID.
* @param string $taxonomy Taxonomy name.
* @return int|false 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 {@see '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;
}