PayPal’s IPN (Instant Payment Notification) in Php – Tutorial & Sample code

This code is used in the “frictionless” checkout process on: http://99cimages.com PHP file used in video: http://crazytom.com/p/Simplest-PayPal-IPN-listener-in-PHP.php Some useful PayPal links I used: IPN (Getting Started): https://developer.paypal.com/docs/classic/ipn/gs_IPN/ PayPal Variables & Messages: https://developer.paypal.com/docs/classic/ipn/integration-guide/IPNandPDTVariables/

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