Re: [PHP] Credit card number checker?

[Ashley M. Kirchner]

Christopher Ostmo wrote:

> What companies issue card numbers that are not 16 numbers?  Are
> they non-US cards?  I haven't ever seen a card that wasn't 16 numbers.

    The ones I care for when I do eCommerce apps:

          Visa: 13, or 16 digits
    MasterCard: 16
          AmEx: 15
        Diners: 14
      Discover: 16


    Others:

       enRoute: 15
     JC Penney: 16  (I think 15 is also valid, but i'm not sure)

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