CODEWITHSUNDEEP
paypal
Mark
Mark

Reputation: 1852

Paypal IPN and transaction IDs

I currently have a simple Paypal button on my website where people enter some information which is saved into a database, and the button then takes them to paypal to pay £20 to join. The problem is there is no link between the website and paypal, so I have to manually cross check who has joined on the website against Paypal each time.

I've looked into Paypal IPN which looks ideal, but I can't work out how to match the transactions up.

i.e. IPN sends me a txn_id, but I don't have that at my end. I need a way to send a generate & save a unique ID per transaction, that goes to Paypal with the user, and Paypal then sends back to me via IPN.

I'm quite lost in Paypals shoddy docs, so any help from SO would help!

(Off topic rant: why to Paypal have so many domains: paypal.com, paypal-business.com, x.com, paypal-marketing.com,... Can they not spell phishing?!)

Upvotes: 0

Views: 2788

Answers (1)

David Nguyen
David Nguyen

Reputation: 8528

Pass YOUR id (like the DB row id) to Paypal with custom variable, you can cross reference it using the custom variable from IPN.

https://cms.paypal.com/us/cgi-bin/?cmd=_render-content&content_ID=developer/e_howto_html_IPNandPDTVariables

Upvotes: 5

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