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Credit Card

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Sep 28.2007

Hello I know how to validate that the correct information is placed in a form but how would you ensure that the information is valid? Such as an actual card number

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PHP

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@MikeOSSep 28.2007 — Credit card numbers are determined using the Luhn formula which you can read about here:

http://en.wikipedia.org/wiki/Luhn_algorithm

On the following link you'll find a JavaScript used to validate credit cards, I haven't used it so I don't know how good it is:

http://www.evolt.org/article/rating/17/24700/
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