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PayPal Integrator V5
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ValidateCard Method

Checks the card number and expiration date for validity.

Object Oriented Interface

public function doValidateCard();

Procedural Interface

inpaypal_cardvalidator_do_validatecard($res);

Remarks

This method performs several checks on customer information to determine if the card information submitted could be valid. This should be done before submitting an actual transaction for authorization. The tests performed are listed below:

Luhn Digit CheckThis process checks the digits of the CardNumber to make sure that it could be a valid card number. The mathematical algorithm used to determine validity is outlined in the Visa External Interface Specification: Authorization Record Formats Version 5.8, page 63.
Card Type CheckThis process checks the length and the beginning digits of the CardNumber to determine if it is a valid card type. The results of this check is stored are the CardType and CardTypeDescription properties.
Expiration Date CheckThe date given in CardExpMonth and CardExpYear is compared to the current system date to make sure that the card is still valid.

 
 
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