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How to validate credit card numbers
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How to validate credit card numbers
http://roscripts.com/How_to_validate_credit_card_numbers-106.html
There's no point to think of the importance of validating your visitor's input. A very important aspect of this process is credit card validation. How do you spot if the entered value is a valid credit card number? There are 2 reasons for doing this and there are 2 ways of doing it.
PHP > Tips and Tutorials > Security
Mar 7, 2007
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