final protected static function validateOrder (string $order="DESC") : string
	{
		$order = strtoupper($order);
		return (!in_array($order, ["DESC", "ASC"])) ? "DESC" : $order;
	}
final protected static function validateOrder (string $order="DESC") : string
	{
		$order = strtoupper($order);
		return (!in_array($order, ["DESC", "ASC"])) ? "DESC" : $order;
	}
final protected static function validateOrder ( string $ order = "DESC" ) : string { $ order = strtoupper ( $ order ) ; return ( ! in_array ( $ order , [ "DESC" , "ASC" ] ) ) ? "DESC" : $ order ; }
Validates the order for sqlQuery
@param string $order
@return string
Validates the order for sqlQuery