PayPal IPN Class

This new version of the class, originally written by Pineapple Technologies, fixes the problem where PayPal IPN notifications fail. There was a bug in PayPal's servers which caused your script to have to follow a HTTP 302 redirect. They have sense resolved the issue completely, but this class insures you won't have problems of this nature in the future. This new class uses cURL so PHP can follow the redirection. By default it uses SSL for posting to PayPal, but is configurable to do normal HTTP as well. This class also gives more detailed logging info in the log file/log email. Please note cURL is REQUIRED!