Displaying Paypal IPN payment data in Adobe Flex via AMFPHP

This article explains how to access paypal payment data sent from IPN (instant payment notification) to a MySQL database using AMHPHP and displayed in a Flex front-end. The end result in this example is a fully customizable packing slip application that can search the database, display data as a packing slip, and print the packing slip. Of course, it is easy to see that using this method, one could manipulate MySQL data in any number of ways.

Example (there are two transactions. For the transaction IDs, enter 1234 or 5678 - right click for source)

This method contains several steps, so I'll put them in three categories:

1)Setting up IPN
2)Setting Up AMFPHP
3)Building the Flex Application

FlexPal Update 05/15/08:

Dear FlexPal customers, FlexPal has been updated as of 05/15/08. if you are an existing customer, and have not received your update please email us at orders@tetraktysdesign.com

Changes:

Drag And Drop Feature Added: Your customers can now "Drag And Drop" items into your FlexPal shopping cart. Check out the sample to see this new feature in action.

FlexPal Update 05/07/08:

Dear FlexPal customers, FlexPal has been updated as of 05/07/08. if you are an existing customer, and have not received your update please email us at orders@tetraktysdesign.com

Changes:
1) Bug Fix: This error was reported:
TypeError: Error #1009: Cannot access a property or method of a null object reference. This bug has been fixed.

2) Shopping Cart, and ShoppingCartFull were combined into a single component