[Observium] New Observium install showing text where PHP should be?

Hi,

I've just followed the Observium install instructions and I have a strange issue with Observium's PHP files. I'm not sure if this is an Apache issue as I don't use Apache and installed it as the instructions said, but I created a phpinfo file and it ran fine!

This was first seen with the Subscription edition, but I've removed that and tried the community edition with the same problems.

the issue is that observium is showing a file that starts with the following in my browser:

<?php /** * Observium * * This file is part of Observium. * * @package observium * @subpackage webinterface * @author Adam Armstrong adama@memetic.org * @copyright (C) 2006-2015 Adam Armstrong * */

Thanks, Edmund