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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 |
|---|---|
| 3525 | * |
| 3526 | * @since 3.2.0 |
| 3527 | * @since 5.5.0 Added the `$post` parameter. |
| 3528 | * |
| 3529 | * @see wp_delete_post() |
| 3530 | * |
| 3531 | * @param int $post_id Post ID. |
| 3532 | * @param WP_Post $post Post object. |
| 3533 | */ |
| 3534 | do_action( 'before_delete_post', $post_id, $post ); |
| 3535 | |
| 3536 | delete_post_meta( $post_id, '_wp_trash_meta_status' ); |
| 3537 | delete_post_meta( $post_id, '_wp_trash_meta_time' ); |
| 3538 | |
| 3539 | wp_delete_object_term_relationships( $post_id, get_object_taxonomies( $post->post_type ) ); |
| 3540 | |
| 3541 | $parent_data = array( 'post_parent' => $post->post_parent ); |
| 3542 | $parent_where = array( 'post_parent' => $post_id ); |
| 3543 | |