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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 |
|---|---|
| 3694 | * |
| 3695 | * @since 3.2.0 |
| 3696 | * @since 5.5.0 Added the `$post` parameter. |
| 3697 | * |
| 3698 | * @see wp_delete_post() |
| 3699 | * |
| 3700 | * @param int $post_id Post ID. |
| 3701 | * @param WP_Post $post Post object. |
| 3702 | */ |
| 3703 | do_action( 'before_delete_post', $post_id, $post ); |
| 3704 | |
| 3705 | delete_post_meta( $post_id, '_wp_trash_meta_status' ); |
| 3706 | delete_post_meta( $post_id, '_wp_trash_meta_time' ); |
| 3707 | |
| 3708 | wp_delete_object_term_relationships( $post_id, get_object_taxonomies( $post->post_type ) ); |
| 3709 | |
| 3710 | $parent_data = array( 'post_parent' => $post->post_parent ); |
| 3711 | $parent_where = array( 'post_parent' => $post_id ); |
| 3712 | |