How can I integrate the KNET payment gateway with PHP? The gateway id only works with Java and .NET.
java - How to integrate KNET payment gateway with php
You have to Install PHP / Java Bridge for it. Then You have to copy your jar file which is given by your payment gateway to /WEB-INF/Lib. Then call that java class in your PHP.
You can use this php implementation on github that works with php 5.3.
See credits on the git readme for more information.