[ferdis]

If your code looks to be ok, I have found that this is often caused by the use of Short Open tags in PHP.

The full tag is :

<?php

but the short open tag can be used as well.

<?

However, you must allow short open tags in your PHP.INI file. Look for the SHORT_OPEN_TAG directive in your PHP.INI file and set it to "1"

I hope this helps.