Hi Børge, > Is anyone of you aware of a modulo eleven function > that is used to calculate the checksum of a creditcard > number?
I'm aware of the mod-10 algorithm (also known as the "Luhn algorithm") - is that what you were after? There's a class that does this, amongst other things, at http://www.zend.com/codex.php?id=31&single=1 but I haven't used it myself. Cheers Jon -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php