Newbie: trying to integrate PayPal's IPN

kennyfrank

I've written on online registration/payment system for a client using PayPal as the processor. As of now, everything works fine but the payment to PayPal is not verified by my app. I want to verify that the payment was made and then write the registrants data to the mysql database. (Currently, I write the data in the script that presents the payment button but the two are not linked together.)

I've been studying the PayPal IPN documentation along with several examples I found on Google but they aren't making much sense. Thus, my question: How can I implement the PayPal IPN system into my php scripts to verify that the payment was made before I write the registrants data to the database? (Examples???)

Thanks in advance,

rehfeld

if you want paypal to notify you of a payment, you need to specify a notification url to them. log into your paypal account to do that.

for example, if you specified

http://example.org/paypal.php

paypal will POST data to that script and then you will need to receive it, and you prob wanna write the data to a db

you can read more on

http://www.sandbox.paypal.com

Roger_Ramjet

Specific point. Any payment processor should tell you that 'it is the internet and you cannot rely on a callback'. The only definitive place you can verify transactions is by logging into your account and viewing/downloading the transaction report.

Just so's you don't upset customers by assuming that no callback means no payment.