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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.
| Line | Code |
|---|---|
| 573 | if ( $metakeyinput) |
| 574 | $metakey = $metakeyinput; // default |
| 575 | |
| 576 | if ( in_array($metakey, $protected) ) |
| 577 | return false; |
| 578 | |
| 579 | wp_cache_delete($post_ID, 'post_meta'); |
| 580 | |
| 581 | $wpdb->query( $wpdb->prepare("INSERT INTO $wpdb->postmeta (post_id,meta_key,meta_value ) VALUES (%s, %s, %s)", $post_ID, $metakey, $metavalue) ); |
| 582 | do_action( 'added_postmeta', $wpdb->insert_id, $post_ID, $metakey, $metavalue ); |
| 583 | |
| 584 | return $wpdb->insert_id; |
| 585 | } |
| 586 | return false; |
| 587 | } // add_meta |
| 588 | |
| 589 | /** |
| 590 | * {@internal Missing Short Description}} |
| 591 | * |