PHP-IPNMonitor provides the checking of the completed transaction from PayPal.

PHP-IPNMonitor provides the checking of the completed transaction from PayPal, secure downloading of digital items, the sending of confirmation emails, and a shopping cart to display the items.

Features:
- Interacts with Paypal's IPN system to monitor when a payment is complete for both digital and physical items.
- Automatically generates an email with a unique password which the customer uses to log in to the download area.
- The purchaser has a defined time limit to download their files and has a defined number of retries.
- Files are not accessible via a normal href link and hence cannot be downloaded by unauthorized users.
- The dynamic shopping cart is instantly updated by changes that you make in the admin section.
- Physical and digital items may be added to the cart at the same time.
- You may place buttons by hand onto existing web pages, or use the template driven shopping store.
- Includes a test page to check the basic operation of the scripts.
- Incorporates testing via the PayPal Sandbox test environment so that the complete system, including IPN can be tested.
- Includes a facility to send items to multiple customers which may be used for upgrading software or complementary sells.
- Written in PHP and requires mySQL.
- All credit card transactions are handled by PayPal.