[Pazvanti]

I am in search for a simple (and if possible free) payPal IPN script. I don't want something fancy with a shopping card or anything. All I want is to have a buy button and after the user pays I need the script to fill in info about the transaction inside a database (like transaction ID, item bought and email used to pay). No file needs to be downloaded after that or anything fancy. Maybe a "Thank you for buying message". But I can do minor changes to that since I have experience with PHP and MySQL...just not with the PayPal IPN api.
I tried the PayPal script generator here: https://www.paypaltech.com/SG2/ , but I don't really know how exactly to use it. I set up the file on my server and if I enter the URL manually I do get an error on my email. But if I go to the paypal IPN script test from developer.paypal.com and enter the url to the script, set everything (Transaction Type: Web Accepted, Payment Status: Completed) and hit send IPN button, no entries are added to the mysql databases and no error messages are send to my email.

Any help is appreciated.