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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 |
|---|---|
| 1704 | |
| 1705 | if ( !is_array($taxonomies) ) |
| 1706 | $taxonomies = array($taxonomies); |
| 1707 | |
| 1708 | foreach ( (array) $taxonomies as $taxonomy ) { |
| 1709 | $tt_ids = wp_get_object_terms($object_id, $taxonomy, array('fields' => 'tt_ids')); |
| 1710 | $in_tt_ids = "'" . implode("', '", $tt_ids) . "'"; |
| 1711 | do_action( 'delete_term_relationships', $object_id, $tt_ids ); |
| 1712 | $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->term_relationships WHERE object_id = %d AND term_taxonomy_id IN ($in_tt_ids)", $object_id) ); |
| 1713 | do_action( 'deleted_term_relationships', $object_id, $tt_ids ); |
| 1714 | wp_update_term_count($tt_ids, $taxonomy); |
| 1715 | } |
| 1716 | } |
| 1717 | |
| 1718 | /** |
| 1719 | * Removes a term from the database. |
| 1720 | * |
| 1721 | * If the term is a parent of other terms, then the children will be updated to |
| 1722 | * that term's parent. |
| Line | Code |
| 2187 | if ( $new_tt_ids ) |
| 2188 | wp_update_term_count( $new_tt_ids, $taxonomy ); |
| 2189 | |
| 2190 | if ( ! $append ) { |
| 2191 | $delete_terms = array_diff($old_tt_ids, $tt_ids); |
| 2192 | if ( $delete_terms ) { |
| 2193 | $in_delete_terms = "'" . implode("', '", $delete_terms) . "'"; |
| 2194 | do_action( 'delete_term_relationships', $object_id, $delete_terms ); |
| 2195 | $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->term_relationships WHERE object_id = %d AND term_taxonomy_id IN ($in_delete_terms)", $object_id) ); |
| 2196 | do_action( 'deleted_term_relationships', $object_id, $delete_terms ); |
| 2197 | wp_update_term_count($delete_terms, $taxonomy); |
| 2198 | } |
| 2199 | } |
| 2200 | |
| 2201 | $t = get_taxonomy($taxonomy); |
| 2202 | if ( ! $append && isset($t->sort) && $t->sort ) { |
| 2203 | $values = array(); |
| 2204 | $term_order = 0; |
| 2205 | $final_tt_ids = wp_get_object_terms($object_id, $taxonomy, array('fields' => 'tt_ids')); |