Re: Credit card checks?

So there is no way to use some sort of string comparison to check the number then? I would have to have a merchant account? Sorry for being nieve, just never tried to work with credit card numbers etc. Jas "Kristopher Yates" <kris@2binteractive.com> wrote in message news:3D3DA374.8080206@2binteractive.com... > You should contact Visa International Service Association to determine > what constitues a "valid" credit card number. Just FYI, a valid format > is 16 digits; aaaa-bbbb-cccc-dddd. I believe VISA normally begins with > "41" as the first two digits, however, I am not a Visa Int. agent but I > am a client. Ultimately, you would need a merchant account to verify its > validity, AFTER you have verified its format for accuracy. HTH Kris > > Jas wrote: > > >Yeah, I have looked at that class file and I don't want someone elses > >example to use, I want to build my own but have no way of knowing what makes > >up a valid visa number etc.... > >Jas > > > >"Richard Baskett" <php@baskettcase.com> wrote in message > >news:B962EBBF.C22F%php@baskettcase.com... > > > > > >>Try this: > >> > >>http://www.AnalysisAndSolutions.com/code/ccvs-ph.htm > >> > >>Rick > >> > >>A sense of humor can help you over look the unattractive, tolerate the > >>unpleasant, cope with the unexpected, and smile through the unbearable. - > >>Moshe Waldoks > >> > >> > >> > >>>From: "Jas" <jlgerfen@hotmail.com> > >>>Date: Tue, 23 Jul 2002 12:09:48 -0600 > >>>To: php-general@lists.php.net > >>>Subject: [PHP] Credit card checks? > >>> > >>>Just wondering if anyone has come across the need to develop a class to > >>> > >>> > >test > > > > > >>>a string of numbers based on a credit card type. If you have where > >>> > >>> > >would I > > > > > >>>be able to get information on what string of numbers is consistent with > >>> > >>> > >each > > > > > >>>of the different credit cards? Any help would be appreciated! > >>>Jas > >>> > >>> > >>> > >>>-- > >>>PHP General Mailing List (http://www.php.net/) > >>>To unsubscribe, visit: http://www.php.net/unsub.php > >>> > >>> > >>> > > > > > > > > > > > > >