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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 |
|---|---|
| 2966 | /** |
| 2967 | * Fires before a post is deleted, at the start of wp_delete_post(). |
| 2968 | * |
| 2969 | * @since 3.2.0 |
| 2970 | * |
| 2971 | * @see wp_delete_post() |
| 2972 | * |
| 2973 | * @param int $postid Post ID. |
| 2974 | */ |
| 2975 | do_action( 'before_delete_post', $postid ); |
| 2976 | |
| 2977 | delete_post_meta( $postid, '_wp_trash_meta_status' ); |
| 2978 | delete_post_meta( $postid, '_wp_trash_meta_time' ); |
| 2979 | |
| 2980 | wp_delete_object_term_relationships( $postid, get_object_taxonomies( $post->post_type ) ); |
| 2981 | |
| 2982 | $parent_data = array( 'post_parent' => $post->post_parent ); |
| 2983 | $parent_where = array( 'post_parent' => $postid ); |
| 2984 | |