WP hooks navigation: Home/browse • Actions index • Filters index
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.
| Line | Code |
|---|---|
| 645 | function delete_meta( $mid ) { |
| 646 | global $wpdb; |
| 647 | $mid = (int) $mid; |
| 648 | |
| 649 | $post_id = $wpdb->get_var( $wpdb->prepare("SELECT post_id FROM $wpdb->postmeta WHERE meta_id = %d", $mid) ); |
| 650 | |
| 651 | do_action( 'delete_postmeta', $mid ); |
| 652 | wp_cache_delete($post_id, 'post_meta'); |
| 653 | $rval = $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->postmeta WHERE meta_id = %d", $mid) ); |
| 654 | do_action( 'deleted_postmeta', $mid ); |
| 655 | |
| 656 | return $rval; |
| 657 | } |
| 658 | |
| 659 | /** |
| 660 | * Get a list of previously defined keys. |
| 661 | * |
| 662 | * @since unknown |
| 663 | * |