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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 |
|---|---|
| 18 | * |
| 19 | * @param int $attachment_id Attachment ID |
| 20 | * @param bool $unfiltered Whether to apply filters or not |
| 21 | * @return array {@internal Missing Description}} |
| 22 | */ |
| 23 | function get_attached_file( $attachment_id, $unfiltered = false ) { |
| 24 | $file = get_post_meta( $attachment_id, '_wp_attached_file', true ); |
| 25 | if ( $unfiltered ) |
| 26 | return $file; |
| 27 | return apply_filters( 'get_attached_file', $file, $attachment_id ); |
| 28 | } |
| 29 | |
| 30 | /** |
| 31 | * update_attached_file() - Update attached file metadata |
| 32 | * |
| 33 | * {@internal Missing Long Description}} |
| 34 | * |
| 35 | * @package WordPress |
| 36 | * @subpackage Post |