get_the_tags( int $id )

function get_the_tags( $id = 0 ) {

	/**
	 * Filters the array of tags for the given post.
	 *
	 * @since WP-2.3.0
	 *
	 * @see get_the_terms()
	 *
	 * @param array $terms An array of tags for the given post.
	 */
	return apply_filters( 'get_the_tags', get_the_terms( $id, 'post_tag' ) );
}