Nov 21, 2009

the quick and simple way to check visa or mastercard cards..

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the quick and simple way to check visa or mastercard cards..

magmabrain
Jan 21 2005, 03:07 AM
Hi, i'm wandering about creating a small algorythm to check directly on receipt of a card number
how to check if the number is correct....

for a small business in vietnam with foreign customers
before payment, just as a verification tool

any ideas ?

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magmabrain
Jan 24 2005, 08:52 AM
Hello boys,

It's seems that the quickest way is by doing a small Check 10 digit algo....

Seems to work, but if anybody is interested by learning the rules, I could make a quick tuto... :mrgreen:

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pweb
Feb 25 2005, 09:26 PM
Its called the LUHN formula

http://perl.about.com/cs/intermediateperl/....htm?terms=luhn

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bassweb
Feb 28 2005, 07:25 PM
use a paypal system

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