Returns the ID of the post’s parent.

$post int|WP_Post|null Optional

Post ID or post object. Defaults to global $post.

Default: null

int|false Post parent ID (which can be 0 if there is no parent), or false if the post does not exist.

File: wp-includes/post.php. View all references

function wp_get_post_parent_id( $post = null ) {
	$post = get_post( $post );

	if ( ! $post || is_wp_error( $post ) ) {
		return false;
	}

	return (int) $post->post_parent;
}