I am facing a problem here which I could not find a good solution for it. I am developing a mobile web app using php and I need a rule based inference engine (open source) - expert system. The only one I could find was Pyke in Python. So I need to integrate Pykes' source code with my php implementation. My service provider is not allowing any commands such as exec for security reasons. I tried PiP (Python to PHP module) but it has a lot of bugs.
py_eval("os.system()") calls, but not use the native PHP eval() function.