apply_filters( 'the_category', string $thelist, string $separator, string $parents )

224	 *225	 * @param string $thelist   List of categories for the current post.226	 * @param string $separator Separator used between the categories.227	 * @param string $parents   How to display the category parents. Accepts 'multiple',228	 *                          'single', or empty.229	 */230	return apply_filters( 'the_category', $thelist, $separator, $parents );231}232 233/**234 * Checks if the current post is within any of the given categories.235 *236 * The given categories are checked against the post's categories' term_ids, names and slugs.