Paypal Payment Fail or Success PHP

Paypal Payment Fail or Success PHP how to find out if payment was successful Rate Topic:

#1 Tex0gen

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Posted 01 December 2011 - 01:49 PM

Hi there, iv setup paypal buttons to purchase a service that needs to be activated if the payment was successfull. However i am unsure how to check if payment failed or not. If anyone can give me some clear advice on how this would be done, it would be greatly appreciated.

#2 skidz

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Posted 01 December 2011 - 02:07 PM

You'll need to read up on paypal IPN (Instant Payment Notification). Once a payment is complete, paypal IPN will provide a silent callback, which is what you need.

This website might be able to help https://www.paypaltech.com/SG2/

#3 Tex0gen

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Posted 01 December 2011 - 02:15 PM

Thank you very much, iv created the custom script you get at the end, but what do i do with that now?

#4 skidz

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Posted 01 December 2011 - 02:19 PM

Read up on IPN and you should be able to work out everything you know, it's not difficult.

http://designertuts....eb-application/

#5 Tex0gen

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Posted 01 December 2011 - 02:24 PM

Think iv just got it. Nice one, thanks very much for all your help!!

#6 tuktuk

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Posted 10 December 2011 - 04:52 PM

peypal is a fantastic media to received online payment.

#7 rallport

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Posted 10 December 2011 - 05:29 PM

A few rules for IPN:

Try to avoid specifying your callback urls within hidden forms fields - that will lead to abuse. I've come across sites where I can confirm an order and recieve a order paid email simply from viewing the source on the payment pages and pasting the ipn callback url into the browser - not a good thing really!
IF you do specify urls in your form as hidden fields, for the love of all things holy, don't rely on querystring data E.g. do not have your ipn url like: site.com/ipn.php?ConfirmOrderRef=123456789
During the IPN script do check the data PayPal sends you it was you expect. So check if the order id exists, check that amounts mtahc, check the payment status
IF you are using the same PayPal account for multiple purposes be very warey. For example, if using it for eBay too you'll notice a "for_auction" variable get sent back - you'll most likely want to filter thewse out - there are a few more payment types
Check the referer - this should really only be PayPal for your purposes
Check the IPN version - these do change sometimes

I'd highly advise sitting down and having a good read through the IPN variables - as PayPal do quite a good job of explaining them - avoid just downloading a script