The purpose of this file is to help you set up and debug your FoxyCart XML DataFeed scripts. It's designed to mimic FoxyCart.com and send encrypted and encoded XML to a URL of your choice. It will print out the response that your script gives back, which should be “foxy” if successful.
Check the comments in the file.
short_open_tag enabled in php.ini or change the PHP open tag from <? to <?php