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To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 1666 | |
| 1667 | if ( !is_array($taxonomies) ) |
| 1668 | $taxonomies = array($taxonomies); |
| 1669 | |
| 1670 | foreach ( (array) $taxonomies as $taxonomy ) { |
| 1671 | $tt_ids = wp_get_object_terms($object_id, $taxonomy, array('fields' => 'tt_ids')); |
| 1672 | $in_tt_ids = "'" . implode("', '", $tt_ids) . "'"; |
| 1673 | do_action( 'delete_term_relationships', $object_id, $tt_ids ); |
| 1674 | $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->term_relationships WHERE object_id = %d AND term_taxonomy_id IN ($in_tt_ids)", $object_id) ); |
| 1675 | do_action( 'deleted_term_relationships', $object_id, $tt_ids ); |
| 1676 | wp_update_term_count($tt_ids, $taxonomy); |
| 1677 | } |
| 1678 | } |
| 1679 | |
| 1680 | /** |
| 1681 | * Removes a term from the database. |
| 1682 | * |
| 1683 | * If the term is a parent of other terms, then the children will be updated to |
| 1684 | * that term's parent. |
| Line | Code |
| 2146 | if ( $new_tt_ids ) |
| 2147 | wp_update_term_count( $new_tt_ids, $taxonomy ); |
| 2148 | |
| 2149 | if ( ! $append ) { |
| 2150 | $delete_terms = array_diff($old_tt_ids, $tt_ids); |
| 2151 | if ( $delete_terms ) { |
| 2152 | $in_delete_terms = "'" . implode("', '", $delete_terms) . "'"; |
| 2153 | do_action( 'delete_term_relationships', $object_id, $delete_terms ); |
| 2154 | $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->term_relationships WHERE object_id = %d AND term_taxonomy_id IN ($in_delete_terms)", $object_id) ); |
| 2155 | do_action( 'deleted_term_relationships', $object_id, $delete_terms ); |
| 2156 | wp_update_term_count($delete_terms, $taxonomy); |
| 2157 | } |
| 2158 | } |
| 2159 | |
| 2160 | $t = get_taxonomy($taxonomy); |
| 2161 | if ( ! $append && isset($t->sort) && $t->sort ) { |
| 2162 | $values = array(); |
| 2163 | $term_order = 0; |
| 2164 | $final_tt_ids = wp_get_object_terms($object_id, $taxonomy, array('fields' => 'tt_ids')); |