I'm looking for a PHP class scripts to work with Paypal's Website Payments Pro API. The API itself is massive so im looking for some pre-developed free/pay PHP software.

I have tried PHPpayPalPro and loved it, but then found out my LIVE server is PHP 4.4. This script requires PHP5+. And i cant upgrade the server.

I have also purchased ($50) and tried Paypal Pro PHP 1.1 but have had a very hard time integrating it. And its throwing errors right and left. Now the site itself is down a week after i purchased it.

So i ask you great community. What free/pay PHP software do you know about that is out there to make my life easier hooking into Paypal's Website Payments Pro.

Thanks much.