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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 |
|---|---|
| 1615 | |
| 1616 | if ( !is_array($taxonomies) ) |
| 1617 | $taxonomies = array($taxonomies); |
| 1618 | |
| 1619 | foreach ( (array) $taxonomies as $taxonomy ) { |
| 1620 | $tt_ids = wp_get_object_terms($object_id, $taxonomy, array('fields' => 'tt_ids')); |
| 1621 | $in_tt_ids = "'" . implode("', '", $tt_ids) . "'"; |
| 1622 | do_action( 'delete_term_relationships', $object_id, $tt_ids ); |
| 1623 | $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->term_relationships WHERE object_id = %d AND term_taxonomy_id IN ($in_tt_ids)", $object_id) ); |
| 1624 | do_action( 'deleted_term_relationships', $object_id, $tt_ids ); |
| 1625 | wp_update_term_count($tt_ids, $taxonomy); |
| 1626 | } |
| 1627 | } |
| 1628 | |
| 1629 | /** |
| 1630 | * Removes a term from the database. |
| 1631 | * |
| 1632 | * If the term is a parent of other terms, then the children will be updated to |
| 1633 | * that term's parent. |
| Line | Code |
| 2090 | |
| 2091 | wp_update_term_count($tt_ids, $taxonomy); |
| 2092 | |
| 2093 | if ( ! $append ) { |
| 2094 | $delete_terms = array_diff($old_tt_ids, $tt_ids); |
| 2095 | if ( $delete_terms ) { |
| 2096 | $in_delete_terms = "'" . implode("', '", $delete_terms) . "'"; |
| 2097 | do_action( 'delete_term_relationships', $object_id, $delete_terms ); |
| 2098 | $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->term_relationships WHERE object_id = %d AND term_taxonomy_id IN ($in_delete_terms)", $object_id) ); |
| 2099 | do_action( 'deleted_term_relationships', $object_id, $delete_terms ); |
| 2100 | wp_update_term_count($delete_terms, $taxonomy); |
| 2101 | } |
| 2102 | } |
| 2103 | |
| 2104 | $t = get_taxonomy($taxonomy); |
| 2105 | if ( ! $append && isset($t->sort) && $t->sort ) { |
| 2106 | $values = array(); |
| 2107 | $term_order = 0; |
| 2108 | $final_tt_ids = wp_get_object_terms($object_id, $taxonomy, array('fields' => 'tt_ids')); |