hey that is an excellent and time saving tip! I also did not know that php has this old friend from cpp. php is just a hobby for me. I don't have alot of time to invest. Now i have a new tool in my toolbox. I will play this over the weekend., haha. so you could drop the padding in my example and replace it with a better idea: <?php /* php 8.2 compatible */     $delimiter = 2; /* tens (01-99) */     if (empty($_GET['selectWeek']) || preg_match("/^[0-9]{1,$delimiter}+$/", $_GET['selectW