Error with PHP during installation

[CTPM]

Hi, I'm a noob.
I use the documentation http://www.cacti.net/downloads/docs/htm ... _unix.html to install cacti onto a FC6, cacti 0.8.7b.

So i've got a problem when i'm trying to connect to the interface, PHP is not interpreted by apache
Result is a blank page, or the php code of the page like this :

Code: Select all

<?php
/*
 +-------------------------------------------------------------------------+
 | Copyright (C) 2004-2008 The Cacti Group                                 |
 |                                                                         |
 | This program is free software; you can redistribute ........

I have the libphp module implemented into config file of apache, so i can't find the problem??