On Feb 13, 2011, at 12:44 AM, Richard Quadling wrote:

> You are
> using addslashes($_POST['cc_number']). Considering a credit card
> number is purely numeric, the addslashes would seem to be redundant as
> you don't need to escape numbers.

I do that routinely to all input fields as one additional layer of protection 
against injection attacks.


> And you can run a Luhn10 check
> against the card number to make sure it is valid before storing it.

I do that as well.


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