I am an beginner-intermediate developer trying to develop a fairly simple text messaging service site. I need the user to be able to click on a Buy Now link that takes them to Paypal to make a payment, and I need Paypal to inform my application when payment had been made successfully.
My application is in Adobe flex, the API to Paypal is php.
There is an example at [url removed, login to view] but I can't get it to work. I know I'm just overlooking little things, but my unfamiliarity with php and Paypal make those little things huge.
Need help from someone familiar with flex, php and paypal API.