This is a CGI script. I am validating a credit card number ($cardNum) and trying to format it to look like this: 1234-5678-9012-3456. I have confirmed that $cardNum contains a correct, 16-digit value. All attempts have resulted in either null or all zero format (0000-0000-0000-0000). Wish I were smarter....

In reply to Re^2: Formatting with sprintf by citabriabob
in thread Formatting with sprintf by citabriabob

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