PSiGate
 
PSiGate uses a variation of General solution, it tracks sales by invoking hidden script from "thank you" page.
 
LEAD Code Integration 1 Integration
Specify your own thank you page for PsiGate and put there the following code
Javascript Code
 OR
Image Code
 
Please take care to replace <?=$orderId?> and <?=$orderAmount?> in the sale code with your server side script notations for the orderid and total amount variable used in your website.
 
This is all that is required. Now whenever there's sale, PSiGate will call our sale tracking script, and system will generate commission for the affiliate.