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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 |
|---|---|
| 3576 | } |
| 3577 | |
| 3578 | /** |
| 3579 | * Fires before a post is sent to the Trash. |
| 3580 | * |
| 3581 | * @since 3.3.0 |
| 3582 | * |
| 3583 | * @param int $post_id Post ID. |
| 3584 | */ |
| 3585 | do_action( 'wp_trash_post', $post_id ); |
| 3586 | |
| 3587 | add_post_meta( $post_id, '_wp_trash_meta_status', $post->post_status ); |
| 3588 | add_post_meta( $post_id, '_wp_trash_meta_time', time() ); |
| 3589 | |
| 3590 | $post_updated = wp_update_post( |
| 3591 | array( |
| 3592 | 'ID' => $post_id, |
| 3593 | 'post_status' => 'trash', |
| 3594 | ) |