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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 |
|---|---|
| 2436 | * @return mixed False on failure |
| 2437 | */ |
| 2438 | function wp_untrash_post($post_id = 0) { |
| 2439 | if ( !$post = get_post($post_id, ARRAY_A) ) |
| 2440 | return $post; |
| 2441 | |
| 2442 | if ( $post['post_status'] != 'trash' ) |
| 2443 | return false; |
| 2444 | |
| 2445 | do_action('untrash_post', $post_id); |
| 2446 | |
| 2447 | $post_status = get_post_meta($post_id, '_wp_trash_meta_status', true); |
| 2448 | |
| 2449 | $post['post_status'] = $post_status; |
| 2450 | |
| 2451 | delete_post_meta($post_id, '_wp_trash_meta_status'); |
| 2452 | delete_post_meta($post_id, '_wp_trash_meta_time'); |
| 2453 | |
| 2454 | wp_insert_post($post); |