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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 |
|---|---|
| 2325 | } |
| 2326 | |
| 2327 | $file = apply_filters('wp_delete_file', $file); |
| 2328 | |
| 2329 | if ( ! empty($file) ) |
| 2330 | @ unlink($file); |
| 2331 | |
| 2332 | clean_post_cache($postid); |
| 2333 | |
| 2334 | do_action('delete_attachment', $postid); |
| 2335 | |
| 2336 | return $post; |
| 2337 | } |
| 2338 | |
| 2339 | /** |
| 2340 | * wp_get_attachment_metadata() - Retrieve metadata for an attachment |
| 2341 | * |
| 2342 | * {@internal Missing Long Description}} |
| 2343 | * |