Need some help here. I am running on PHP 4.3.4 Fast CGI for my e-commerce platform which uses Paypal as a gateway.
However, due to the instability of FastCGI, I have switched to ISAPI and all functions can work except Paypal.
Can I ask whether there is a difference if I use FastCGI or ISAPI for Paypal?
I attached the code we used which is successful when using under FASTCGI but fails under ISAPI.