ter );
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 $value combinations exist, the Term will be returned.
*
* This function will always return the first term that matches the `$field`-
* `$value`-`$taxonomy` combination specified in the parameters. If your query
* is likely to match more than one term (as is likely to be the case when
* `$field` is 'name', for example), consider using get_terms() instead; that
* way, you will get all matching terms, and can provide your own logic for
* deciding which one was intended.
*
* @todo Better formatting for DocBlock.
*
* @since 2.3.0
* @since 4.4.0 `$taxonomy` is optional if `$field` is 'term_taxonomy_id'. Converted to return
* a WP_Term object if `$output` is `OBJECT`.
*
* @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 Optional. The required return type. One of OBJECT, ARRAY_A, or ARRAY_N, which correspond to
* a WP_Term object, an associative array, or a numeric array, respectively. Default OBJECT.
* @param string $filter Optional, default is raw or no WordPress defined filter will applied.
* @return WP_Term|array|false WP_Term instance (or array) on success. Will return false if `$taxonomy` does not exist
* or `$term` was not found.
*/
function get_term_by( $field, $value, $taxonomy = '', $output = OBJECT, $filter = 'raw' ) {
// 'term_taxonomy_id' lookups don't require taxonomy checks.
if ( 'term_taxonomy_id' !== $field && ! taxonomy_exists( $taxonomy ) ) {
return false;
}
// No need to perform a query for empty 'slug' or 'name'.
if ( 'slug' === $field || 'name' === $field ) {
$value = (string) $value;
if ( 0 === strlen( $value ) ) {
return false;
}
}
if ( 'id' === $field || 'term_id' === $field ) {
$term = get_term( (int) $value, $taxonomy, $output, $filter );
if ( is_wp_error( $term ) || null === $term ) {
$term = false;
}
return $term;
}
$args = array(
'get' => 'all',
'number' => 1,
'taxonomy' => $taxonomy,
'update_term_meta_cache' => false,
'orderby' => 'none',
'suppress_filter' => true,
);
switch ( $field ) {
case 'slug' :
$args['slug'] = $value;
break;
case 'name' :
$args['name'] = $value;
break;
case 'term_taxonomy_id' :
$args['term_taxonomy_id'] = $value;
unset( $args[ 'taxonomy' ] );
break;
default :
return false;
}
$terms = get_terms( $args );
if ( is_wp_error( $terms ) || empty( $terms ) ) {
return false;
}
$term = array_shift( $terms );
// In the case of 'term_taxonomy_id', override the provided `$taxonomy` with whatever we find in the db.
if ( 'term_taxonomy_id' === $field ) {
$taxonomy = $term->taxonomy;
}
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 int $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.
* @since 4.8.0 Introduced 'suppress_filter' parameter.
*
* @internal The `$deprecated` parameter is parsed for backward compatibility only.
*
* @param string|array $args Optional. Array or string of arguments. See WP_Term_Query::__construct()
* for information on accepted arguments. Default empty.
* @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 = '' ) {
$term_query = new WP_Term_Query();
$defaults = array(
'suppress_filter' => false,
);
/*
* Legacy argument format ($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)
*/
$_args = wp_parse_args( $args );
$key_intersect = array_intersect_key( $term_query->query_var_defaults, (array) $_args );
$do_legacy_args = $deprecated || empty( $key_intersect );
if ( $do_legacy_args ) {
$taxonomies = (array) $args;
$args = wp_parse_args( $deprecated, $defaults );
$args['taxonomy'] = $taxonomies;
} else {
$args = wp_parse_args( $args, $defaults );
if ( isset( $args['taxonomy'] ) && null !== $args['taxonomy'] ) {
$args['taxonomy'] = (array) $args['taxonomy'];
}
}
if ( ! empty( $args['taxonomy'] ) ) {
foreach ( $args['taxonomy'] as $taxonomy ) {
if ( ! taxonomy_exists( $taxonomy ) ) {
return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy.' ) );
}
}
}
// Don't pass suppress_filter to WP_Term_Query.
$suppress_filter = $args['suppress_filter'];
unset( $args['suppress_filter'] );
$terms = $term_query->query( $args );
// Count queries are not filtered, for legacy reasons.
if ( ! is_array( $terms ) ) {
return $terms;
}
if ( $suppress_filter ) {
return $terms;
}
/**
* Filters the found terms.
*
* @since 2.3.0
* @since 4.6.0 Added the `$term_query` parameter.
*
* @param array $terms Array of found terms.
* @param array $taxonomies An array of taxonomies.
* @param array $args An array of get_terms() arguments.
* @param WP_Term_Query $term_query The WP_Term_Query object.
*/
return apply_filters( 'get_terms', $terms, $term_query->query_vars['taxonomy'], $term_query->query_vars, $term_query );
}
/**
* 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 );
}
/**
* Get all meta data, including meta IDs, for the given term ID.
*
* @since 4.9.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param int $term_id Term ID.
* @return array|false Array with meta data, or false when the meta table is not installed.
*/
function has_term_meta( $term_id ) {
// Bail if term meta table is not installed.
if ( get_option( 'db_version' ) < 34370 ) {
return false;
}
global $wpdb;
return $wpdb->get_results( $wpdb->prepare( "SELECT meta_key, meta_value, meta_id, term_id FROM $wpdb->termmeta WHERE term_id = %d ORDER BY meta_key,meta_id", $term_id ), ARRAY_A );
}
/**
* Registers a meta key for terms.
*
* @since 4.9.8
*
* @param string $taxonomy Taxonomy to register a meta key for. Pass an empty string
* to register the meta key across all existing taxonomies.
* @param string $meta_key The meta key to register.
* @param array $args Data used to describe the meta key when registered. See
* {@see register_meta()} for a list of supported arguments.
* @return bool True if the meta key was successfully registered, false if not.
*/
function register_term_meta( $taxonomy, $meta_key, array $args ) {
$args['object_subtype'] = $taxonomy;
return register_meta( 'term', $meta_key, $args );
}
/**
* Unregisters a meta key for terms.
*
* @since 4.9.8
*
* @param string $taxonomy Taxonomy the meta key is currently registered for. Pass
* an empty string if the meta key is registered across all
* existing taxonomies.
* @param string $meta_key The meta key to unregister.
* @return bool True on success, false if the meta key was not previously registered.
*/
function unregister_term_meta( $taxonomy, $meta_key ) {
return unregister_meta_key( 'term', $meta_key, $taxonomy );
}
/**
* 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. Accepts term ID, slug, or name.
* @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 all 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' == $context ) {
/**
* Filters a term field to edit before it is sanitized.
*
* The dynamic portion of the filter name, `$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, $taxonomy );
/**
* Filters the taxonomy field to edit before it is sanitized.
*
* The dynamic portions of the filter name, `$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' == $context ) {
/**
* Filters a term field value before it is sanitized.
*
* The dynamic portion of the filter name, `$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, $taxonomy );
/**
* Filters a taxonomy field before it is sanitized.
*
* The dynamic portions of the filter name, `$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' == $field ) {
/**
* Filters the category nicename before it is sanitized.
*
* Use the {@see 'pre_$taxonomy_$field'} hook instead.
*
* @since 2.0.3
*
* @param string $value The category nicename.
*/
$value = apply_filters( 'pre_category_nicename', $value );
}
} elseif ( 'rss' == $context ) {
/**
* Filters the term field for use in RSS.
*
* The dynamic portion of the filter name, `$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, $taxonomy );
/**
* Filters the taxonomy field for use in RSS.
*
* The dynamic portions of the hook name, `$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", $value );
} else {
// Use display filters by default.
/**
* Filters the term field sanitized for display.
*
* The dynamic portion of the filter name, `$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, $context );
/**
* Filters the taxonomy field sanitized for display.
*
* The dynamic portions of the filter name, `$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 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, $defaults);
// backward compatibility
if ( isset($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 Category term 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.
* @since 4.7.0 Refactored to use WP_Term_Query, and to support any WP_Term_Query arguments.
*
* @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 See WP_Term_Query::__construct() for supported arguments.
* @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()) {
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);
$args = wp_parse_args( $args );
/**
* Filter arguments for retrieving object terms.
*
* @since 4.9.0
*
* @param array $args An array of arguments for retrieving terms for the given object(s).
* See {@see wp_get_object_terms()} for details.
* @param int|array $object_ids Object ID or array of IDs.
* @param string|array $taxonomies The taxonomies to retrieve terms from.
*/
$args = apply_filters( 'wp_get_object_terms_args', $args, $object_ids, $taxonomies );
/*
* When one or more queried taxonomies is registered with an 'args' array,
* those params override the `$args` passed to this function.
*/
$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 );
}
}
$args['taxonomy'] = $taxonomies;
$args['object_ids'] = $object_ids;
// Taxonomies registered without an 'args' param are handled here.
if ( ! empty( $taxonomies ) ) {
$terms_from_remaining_taxonomies = get_terms( $args );
// Array keys should be preserved for values of $fields that use term_id for keys.
if ( ! empty( $args['fields'] ) && 0 === strpos( $args['fields'], 'id=>' ) ) {
$terms = $terms + $terms_from_remaining_taxonomies;
} else {
$terms = array_merge( $terms, $terms_from_remaining_taxonomies );
}
}
/**
* Filters 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 $object_ids Array of object IDs for which `$terms` were retrieved.
* @param array $taxonomies Array of taxonomies from which `$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_ids, $taxonomies, $args );
$object_ids = implode( ',', $object_ids );
$taxonomies = "'" . implode( "', '", array_map( 'esc_sql', $taxonomies ) ) . "'";
/**
* Filters the terms for a given object or objects.
*
* The `$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 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`,
* 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.' ) );
}
/**
* Filters 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,
'parent' => $args['parent'],
) );
/*
* 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 ( ( ! $slug_provided || $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 );
$data = compact( 'name', 'slug', 'term_group' );
/**
* Filters term data before it is inserted into the database.
*
* @since 4.7.0
*
* @param array $data Term data to be inserted.
* @param string $taxonomy Taxonomy slug.
* @param array $args Arguments passed to wp_insert_term().
*/
$data = apply_filters( 'wp_insert_term_data', $data, $taxonomy, $args );
if ( false === $wpdb->insert( $wpdb->terms, $data ) ) {
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 );
/**
* Filters 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 string|int|array $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. Passing an
* empty value will remove all related terms.
* @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, $tt_id ) ) )
continue;
/**
* Fires immediately before an object-term relationship is added.
*
* @since 2.9.0
* @since 4.7.0 Added the `$taxonomy` parameter.
*
* @param int $object_id Object ID.
* @param int $tt_id Term taxonomy ID.
* @param string $taxonomy Taxonomy slug.
*/
do_action( 'add_term_relationship', $object_id, $tt_id, $taxonomy );
$wpdb->insert( $wpdb->term_relationships, array( 'object_id' => $object_id, 'term_taxonomy_id' => $tt_id ) );
/**
* Fires immediately after an object-term relationship is added.
*
* @since 2.9.0
* @since 4.7.0 Added the `$taxonomy` parameter.
*
* @param int $object_id Object ID.
* @param int $tt_id Term taxonomy ID.
* @param string $taxonomy Taxonomy slug.
*/
do_action( 'added_term_relationship', $object_id, $tt_id, $taxonomy );
$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' );
wp_cache_delete( 'last_changed', 'terms' );
/**
* 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 string|int|array $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 string|int|array $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( "', '", $tt_ids ) . "'";
/**
* Fires immediately before an object-term relationship is deleted.
*
* @since 2.9.0
* @since 4.7.0 Added the `$taxonomy` parameter.
*
* @param int $object_id Object ID.
* @param array $tt_ids An array of term taxonomy IDs.
* @param string $taxonomy Taxonomy slug.
*/
do_action( 'delete_term_relationships', $object_id, $tt_ids, $taxonomy );
$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, $taxonomy . '_relationships' );
wp_cache_delete( 'last_changed', 'terms' );
/**
* Fires immediately after an object-term relationship is deleted.
*
* @since 2.9.0
* @since 4.7.0 Added the `$taxonomy` parameter.
*
* @param int $object_id Object ID.
* @param array $tt_ids An array of term taxonomy IDs.
* @param string $taxonomy Taxonomy slug.
*/
do_action( 'deleted_term_relationships', $object_id, $tt_ids, $taxonomy );
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.
/**
* Filters 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;
}
}
}
/**
* Filters 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;
}
/**
* Filters 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 {
/* translators: 1: Taxonomy term slug */
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 );
$data = compact( 'name', 'slug', 'term_group' );
/**
* Filters term data before it is updated in the database.
*
* @since 4.7.0
*
* @param array $data Term data to be updated.
* @param int $term_id Term ID.
* @param string $taxonomy Taxonomy slug.
* @param array $args Arguments passed to wp_update_term().
*/
$data = apply_filters( 'wp_update_term_data', $data, $term_id, $taxonomy, $args );
$wpdb->update( $wpdb->terms, $data, compact( 'term_id' ) );
if ( empty($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 );
/**
* 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 $object_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 ) {
clean_taxonomy_cache( $taxonomy );
}
/**
* Fires once after each taxonomy's term cache has been cleaned.
*
* @since 2.5.0
* @since 4.5.0 Added the `$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' );
}
/**
* Clean the caches for a taxonomy.
*
* @since 4.9.0
*
* @param string $taxonomy Taxonomy slug.
*/
function clean_taxonomy_cache( $taxonomy ) {
wp_cache_delete( 'all_ids', $taxonomy );
wp_cache_delete( 'get', $taxonomy );
// Regenerate cached hierarchy.
delete_option( "{$taxonomy}_children" );
_get_term_hierarchy( $taxonomy );
/**
* Fires after a taxonomy's caches have been cleaned.
*
* @since 4.9.0
*
* @param string $taxonomy Taxonomy slug.
*/
do_action( 'clean_taxonomy_cache', $taxonomy );
}
/**
* Retrieves the taxonomy relationship to the term object id.
*
* Upstream functions (like get_the_terms() and is_object_in_term()) are
* responsible for populating the object-term relationship cache. The current
* function only fetches relationship data that is already in the cache.
*
* @since 2.3.0
* @since 4.7.0 Returns a WP_Error object if get_term() returns an error for
* any of the matched terms.
*
* @param int $id Term object ID.
* @param string $taxonomy Taxonomy name.
* @return bool|array|WP_Error Array of `WP_Term` objects, if cached.
* False if cache is empty for `$taxonomy` and `$id`.
* WP_Error if get_term() returns an error object for any term.
*/
function get_object_term_cache( $id, $taxonomy ) {
$_term_ids = wp_cache_get( $id, "{$taxonomy}_relationships" );
// We leave the priming of relationship caches to upstream functions.
if ( false === $_term_ids ) {
return false;
}
// Backward compatibility for if a plugin is putting objects into the cache, rather than IDs.
$term_ids = array();
foreach ( $_term_ids as $term_id ) {
if ( is_numeric( $term_id ) ) {
$term_ids[] = intval( $term_id );
} elseif ( isset( $term_id->term_id ) ) {
$term_ids[] = intval( $term_id->term_id );
}
}
// Fill the term objects.
_prime_term_caches( $term_ids );
$terms = array();
foreach ( $term_ids as $term_id ) {
$term = get_term( $term_id, $taxonomy );
if ( is_wp_error( $term ) ) {
return $term;
}
$terms[] = $term;
}
return $terms;
}
/**
* 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->term_id;
}
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);
}
/**
* Adds any terms from the given IDs to the cache that do not already exist in cache.
*
* @since 4.6.0
* @access private
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param array $term_ids Array of term IDs.
* @param bool $update_meta_cache Optional. Whether to update the meta cache. Default true.
*/
function _prime_term_caches( $term_ids, $update_meta_cache = true ) {
global $wpdb;
$non_cached_ids = _get_non_cached_ids( $term_ids, 'terms' );
if ( ! empty( $non_cached_ids ) ) {
$fresh_terms = $wpdb->get_results( sprintf( "SELECT t.*, tt.* FROM $wpdb->terms AS t INNER JOIN $wpdb->term_taxonomy AS tt ON t.term_id = tt.term_id WHERE t.term_id IN (%s)", join( ",", array_map( 'intval', $non_cached_ids ) ) ) );
update_term_cache( $fresh_terms, $update_meta_cache );
if ( $update_meta_cache ) {
update_termmeta_cache( $non_cached_ids );
}
}
}
//
// 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( (int) $child_tt_id, '', false );
}
} 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, false );
}
clean_term_cache( $term_id, $term_taxonomy->taxonomy, false );
/*
* Taxonomy cache clearing is delayed to avoid race conditions that may occur when
* regenerating the taxonomy's hierarchy tree.
*/
$taxonomies_to_clean = array( $term_taxonomy->taxonomy );
// Clean the cache for term taxonomies formerly shared with the current term.
$shared_term_taxonomies = $wpdb->get_col( $wpdb->prepare( "SELECT taxonomy FROM $wpdb->term_taxonomy WHERE term_id = %d", $term_id ) );
$taxonomies_to_clean = array_merge( $taxonomies_to_clean, $shared_term_taxonomies );
foreach ( $taxonomies_to_clean as $taxonomy_to_clean ) {
clean_taxonomy_cache( $taxonomy_to_clean );
}
// Keep a record of term_ids that have been split, keyed by old term_id. 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 Term ID.
* @return bool Returns false if a term is not shared between multiple taxonomies or
* if splittng shared taxonomy terms is finished.
*/
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);
/**
* Filters the permalink structure for a terms before token replacement occurs.
*
* @since 4.9.0
*
* @param string $termlink The permalink structure for the term's taxonomy.
* @param WP_Term $term The term object.
*/
$termlink = apply_filters( 'pre_term_link', $termlink, $term );
$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 ) {
/**
* Filters 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 ) {
/**
* Filters 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 );
}
/**
* Filters 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 $term_template */
'template' => __( '%s: %l.' ),
'term_template' => '%2$s',
) );
$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 An array of all taxonomy names for the given post.
*/
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 ) );
if ( is_wp_error( $object_terms ) ) {
return $object_terms;
}
wp_cache_set( $object_id, wp_list_pluck( $object_terms, 'term_id' ), "{$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);
}
/**
* Filters 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;
}