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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 |
|---|---|
| 2372 | * @param int $post_id attachment ID |
| 2373 | * @param array $data attachment data |
| 2374 | * @return int {@internal Missing Description}} |
| 2375 | */ |
| 2376 | function wp_update_attachment_metadata( $post_id, $data ) { |
| 2377 | $post_id = (int) $post_id; |
| 2378 | if ( !$post =& get_post( $post_id ) ) |
| 2379 | return false; |
| 2380 | |
| 2381 | $data = apply_filters( 'wp_update_attachment_metadata', $data, $post->ID ); |
| 2382 | |
| 2383 | return update_post_meta( $post->ID, '_wp_attachment_metadata', $data); |
| 2384 | } |
| 2385 | |
| 2386 | /** |
| 2387 | * wp_get_attachment_url() - Retrieve the URL for an attachment |
| 2388 | * |
| 2389 | * {@internal Missing Long Description}} |
| 2390 | * |