phpfox

I want to use methods and resources from the code of a website which is developed in PHPFox . Basically, I'll receive request from iPhone/Android , I'll get the request and pass to the respective function from the PHPFox code, take the response from that function and return it back to the device. For this purpose I've developed REST APIs using Slim framework . But the major blocker I'm facing currently is in accessing the resources(i.e. functions and data) of PHPFox website. I'm not understanding how should I authenticate the user using 'Token Based Authentication' in order to access the