Top 12 Useful Paypal IPN Web Pages

The top 12 really useful Paypal IPN web pages as selected by Designer Tuts.
The Paypal website itself is obviously one of the best but we have dug down to find the most useful of their vast collection for those of us wanting to just concentrate on Paypal IPN.
We also have a good collection of articles, tutorials and code snippets by some of the top IPN sites around.
Have a look at @merseyinternet/paypalipn for a list of Paypal IPN experts
Paypal Integration Center IPN Overview. There is no better place to go for information about IPN.
Comprehensive information, good guides often with diagrams and code snippets in a variety of programming languages.
IPN Discussion Forum. Good place to hang out with other people who are at the end of their tether. You will find the usual mix of experts and newbies. You can learn a lot here. Unfortunately they have had a bit of a reorganisation and deleted all the old discussions.
Testing Forum. Mostly the sandbox. I love the sandbox. All that pretend money. If you use the Paypal Sandbox you should come here at the first sign of trouble. Paypal staff post here. Reading what they say can save you a lot of time and effort.
Disaster. All the old posts have gone. Hope they fix it.
Paypal’s example IPN script. Every beginner needs to look at this. But it’s just the starting point.
A great guide to IPN with example PHP code and some good links to other sites. The comments section is worth reading also.
6. Stackflow IPN Questions and Answers
IPN Questions and Answers. Stack Overflow is a programming Q & A site. This page is just IPN but you can search for other related tags. It’s like the Paypal forum but looks nicer.
7. A PHP Template for IPN
I can’t find this anymore. Anyone know where it went.
“PHP Template for IPN” by Drew Angell. He calls it a good starting point. I call it amazing. This page is on the Paypal Discussion Forum mentioned above. But I think it deserves its own spot in the top 12.
A well set out tutorial that covers all the main steps but make sure you read the comments as well as some are critical.
An Abstract Payment Gateway library for Paypal, Authorize.net and 2Checkout. Good quality coding with friendly licensing conditions.
Another tutorial with example code. But its by Olaf Lederer which makes it a bit special in my opinion. He also runs a useful Forum.
A video tutorial on how to use Vibralogix’s Linklok product to sell digital files. Shows everything from setting up your Paypal account to the user downloading a test e-book.
12. Micah Carrick Paypal Class
A PHP Paypal IPN Integration Class. Originally written over 5 years ago I think. So the blog comments will take another year to read through as there are a lot of them.
There is a note about a new version. I haven’t had time to take a look yet.
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Thank you, Im trying to make a variable on the IPN so when someone makes a payment, it will make a record on a database, anyone?
hi, Craglist Clone, you can try using the “custom” or “invoice” variable to store something that will be returned back to you on every transaction