Undefined class constant 'SOCKOPT_FD'
I get this error when I try and run a test of Ratchet. It error is being generated in the SocketWrapper.php class in the ZMQ directory of React. I am trying to get the server running.

I am currently running:
PHP Version: 5.3.24
ZMQ Version: 3.2.0
OS: Windows 7 Home

Any help would be appreciated?
