private function is_multidimensional($array) {

		if(false === is_array($array)) {
			return trigger_error(sprintf('Argument 1 passed to %s() must be of the type Array, "%s" given', __METHOD__, gettype($array)), E_USER_ERROR);
		}

	    return (count(array_filter($array, 'is_array')) > 0);
	}