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 |
|---|---|
| 1468 | } |
| 1469 | |
| 1470 | function wp_update_attachment_metadata( $post_id, $data ) { |
| 1471 | $post_id = (int) $post_id; |
| 1472 | if ( !$post =& get_post( $post_id ) ) |
| 1473 | return false; |
| 1474 | |
| 1475 | $old_data = wp_get_attachment_metadata( $post->ID, true ); |
| 1476 | |
| 1477 | $data = apply_filters( 'wp_update_attachment_metadata', $data, $post->ID ); |
| 1478 | |
| 1479 | if ( $old_data ) |
| 1480 | return update_post_meta( $post->ID, '_wp_attachment_metadata', $data, $old_data ); |
| 1481 | else |
| 1482 | return add_post_meta( $post->ID, '_wp_attachment_metadata', $data ); |
| 1483 | } |
| 1484 | |
| 1485 | function wp_get_attachment_url( $post_id = 0 ) { |
| 1486 | $post_id = (int) $post_id; |