I looked through my old files during lunch - and somehow didn't manage to keep my custom tag (yes, pre CFC days) with all of the validation. That said, Wikipedia has a pretty extensive list of possible card types with their possible valid lengths, ranges and validation (anything you're likely to accept uses the Luhn algorithm for validation). I used a similar chart when I built my original validation and we never had any issues with card numbers that passed the validation (barring outright fraud, but we had other checks and authorization in place trying to prevent that). It should be pretty simple to build your own if you wish.
http://en.wikipedia.org/wiki/Credit_card_number Have fun! Dawn On Wed, Mar 10, 2010 at 12:38 PM, Charlie Arehart <[email protected]>wrote: > And while the back-end validation is of course vital, if you want to do > it on the front-end as well (in Javascript), note that it’s a built-in > feature of CFINPUT, validate=”creditcard”. > > Yes, yes, I know that purists would never use CFFORM, and I know that you > can’t rely on client-side validation for security because it can be > circumvented and won’t work if JS is disabled on the browser, yadda, yadda. > That’s why I note that this would be subsidiary to server-side validation. > Still, it’s a lot more user-friendly to catch it on the front-end first, if > you can. > > All that said, I suppose some will still have more to say. Shields up. > Engage. :-) > > > > /charlie > > > > *From:* [email protected] [mailto:[email protected]] *On Behalf Of *Shawn > Gorrell > *Sent:* Wednesday, March 10, 2010 12:26 PM > *To:* [email protected] > *Subject:* Re: [ACFUG Discuss] validating credit card numbers with CF > > > > Pretty much. > > Sent from my iPhone > > > On Mar 10, 2010, at 11:22 AM, Dusty Hale <[email protected]> wrote: > > Thanks shawn. Would that be as simple as doing this: > > <cfif not > refind("^((4\d{3})|(5[1-5]\d{2})|(6011))-?\d{4}-?\d{4}-?\d{4}|3[4,7]\d{13}$",trim(form.card_number),1)> > <!--- do something ---> > </cfif> > > On Wed, Mar 10, 2010 at 11:12 AM, shawn gorrell <[email protected]> > wrote: > > ^((4\d{3})|(5[1-5]\d{2})|(6011))-?\d{4}-?\d{4}-?\d{4}|3[4,7]\d{13}$ > > > ------------------------------ > > *From:* Dusty Hale <[email protected]> > *To:* [email protected] > *Sent:* Wed, March 10, 2010 11:05:47 AM > *Subject:* [ACFUG Discuss] validating credit card numbers with CF > > > Does anyone have a CF code snippet for validating credit cards numbers? > > Dusty > > > ------------------------------------------------------------- > To unsubscribe from this list, manage your profile @ > http://www.acfug.org?fa=login.edituserform > > For more info, see http://www.acfug.org/mailinglists > Archive @ http://www.mail-archive.com/discussion%40acfug.org/ > List hosted by FusionLink <http://www.fusionlink.com> > ------------------------------------------------------------- > > > > > -- > Dusty Hale > Email: [email protected] > Phone (Atlanta): 404.474.3754 > Phone (Toll Free USA): 877.841.3370 > Website: www.DustyHale.com > > > ------------------------------------------------------------- > To unsubscribe from this list, manage your profile @ > http://www.acfug.org?fa=login.edituserform > > For more info, see http://www.acfug.org/mailinglists > Archive @ http://www.mail-archive.com/discussion%40acfug.org/ > List hosted by FusionLink <http://www.fusionlink.com> > ------------------------------------------------------------- > > ------------------------------------------------------------- > To unsubscribe from this list, manage your profile @ > http://www.acfug.org?fa=login.edituserform > > For more info, see http://www.acfug.org/mailinglists > Archive @ http://www.mail-archive.com/discussion%40acfug.org/ > List hosted by FusionLink <http://www.fusionlink.com> > ------------------------------------------------------------- >
