The bank we use to validate our credit cards wants us to provide a paper format to validate the cards. This paper format must have credit card numbers separated by "-" every 4 digits. How can I do this? Seems like I'd need AWK or something.

You can use the next function. It's good for VISA cards but you can easily add cases for any other card :

<?
function AddDash($CC_Num,$CC_Type){
if ($CC_Type="VISA") {
$NewCC="";
for ($i=0 ; $i < 4 ; $i++)
$NewCC=$NewCC.substr($CC_Num, ($i*4), 4)."-";
}
$NewCC=substr($NewCC,0,19);
return ($NewCC);
}
?>

Cool, that's exactly what I was looking for!

No problem...

Thats what the forum is for :)

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