# Payment processing and links

**URL:** <https://forum.kirupa.com/t/payment-processing-and-links/288610>\
**Category:** programming\
**Created:** [May 18, 2009, 9:52pm UTC](https://forum.kirupa.com/t/payment-processing-and-links/288610 "2009-05-18T21:52:55Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Tartarus](https://avatars.discourse-cdn.com/v4/letter/t/43a26b/32.png) [@Tartarus](https://forum.kirupa.com/u/Tartarus)\
**Post date:** [May 18, 2009, 9:52pm UTC](https://forum.kirupa.com/t/payment-processing-and-links/288610/1 "2009-05-18T21:52:55Z")

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Hi,  
I’m trying to set up a kind of a Flash MMOG where people can purchase certain priviliges on-site. Essentially, after a successful payment made by a user with PayPal, I want to update my database with that information. But since when paying, the user opens a new window, how do I know if the user paid or cancelled?

Although PayPal allows me to indicate a page to which the user is redirected after successful payment, is there any way to make the page inaccessible any other way except through PayPal, so I can put in the PHP to modify my user database?

I know this is complicated and hard to explain, but maybe if you could point me in the right direction - a tutorial, or a technical term for what I’m trying to do…

Thank you!