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Creating a Credit Card Validation Class With PHP


One of the most important functions of any eCommerce web site is credit card number storage and validation. In this article David develops a PHP class that stores the details of a credit card and validates its number using the Mod 10 algorithm.

Author Info:
By: David Rusik
Rating: 5 stars5 stars5 stars5 stars5 stars / 48
February 25, 2002
TABLE OF CONTENTS:
  1. · Creating a Credit Card Validation Class With PHP
  2. · Credit card validation
  3. · Creating the CCreditCard class
  4. · Creating the CCreditCard class (contd.)
  5. · Using our CCreditCard class
  6. · Conclusion

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Creating a Credit Card Validation Class With PHP - Conclusion
(Page 6 of 6 )

In this article we've seen how we can take advantage of PHP's object orientated nature (most notably classes) to create a credit card storage and validation class. We went through the components of this class in detail, and we finished off by creating a test script in which we instantiated our CCreditCard class and validated a sample card number.

If you're thinking of setting up an eCommerce site which will process/store visitors credit card details, then you should take the class we've just made and customize it to suit your needs. You might want to add other functions to it to compare CCreditCard objects, format the cards details into an XML string, encrypt the cards details to a database, or even process the payment in real time.
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