Empty page with index.php in plain text

Thanks for your reply @includebeer,

Great article btw. It did not exactly solve my issue, but it got me in the right direction.

Whilst trying out a few things in the .htaccess file I noticed that only the <IfModule !mod_rewrite.c> part was active. That brought me to the idea that probably the mode_rewrite was not enabled. Enabling the mode_rewrite solved my issue.

Thanks for your help.