PayPal Tutorials
How to Build a Real-Time Affiliate System with PayPal Adaptive Payments
Introduction Over the years I’ve been able to take part in the launch of a variety of e-commerce websites. One thing that remains consistent regardless of the type of the product, site structure, or any other variables involved, is that site owners will undoubtedly...
Why Magento is the Best Open Source Shopping Cart Solution
Introduction Somehow I’m still amazed at how quickly things change in the land of the internet, application development, and technology in general. Not long ago, building an ecommerce website was a time-consuming, costly project that many small businesses simply...
How to Manage Sales Between eBay and Your Own Website
The Problem Over the years I’ve worked with numerous merchants using PayPal for their payment processing needs. Many of these merchants are selling merchandise on their own website as well as utilizing the eBay platform because, let’s face it, if you’ve got product,...
How to Daisy Chain PayPal IPN Messages
Introduction to IPN PayPal’s Instant Payment Notification (IPN) system is an extremely valuable tool that will automatically send transaction data to a “listener” application on a web server. This application can process the data in any way necessary, such as updating...
PHP Class Library for PayPal
Introduction PayPal provides SDK's for all of their API's in various programming languages. These SDK's work just fine, however, they are fairly basic and I consider them good samples or starting-points, but not a complete, easy-to-use solution. As such, I put...
PayPal Instant Payment Notification – Part 2
Testing, Troubleshooting and Deployment PayPal Instant Payment Notification solutions can be very simple or very complex. An IPN listener could do nothing but send an email notification or it could handle multiple, automated tasks at one time like updating databases...
PayPal Instant Payment Notification – Part 1
In this 2-art series Andrew discusses the details of what exactly PayPal IPN (instant payment notification) is and how you can use it to automate tasks when you receive payments via PayPal. This article was published by O'Reilly Media as part of the DevZone within the...