http://snipplr.com/language/asp/tags/mod10 Recent snippets posted on Snipplr.com en-us Thu, 20 Jun 2013 06:31:06 GMT http://snipplr.com/view/946/credit-card-validation-luhn-algorithm/ Uses the Luhn formula to quickly validate a credit card. Basically all the digits except for the last one are summed together and the output is a single digit (0 to 9). This digit is compared with the last digit ensure a proper credit card number is entered (Does not actually confirm that is is a real number, just that it is likely to be one. Example: Entering "4000-0000-0000-0002" will pass the check, but "4000-0000-0000-0003" will not pass.)

]]> Fri, 25 Aug 2006 07:26:18 GMT http://snipplr.com/view/946/credit-card-validation-luhn-algorithm/