php virtual function causes blank page

Question

the following code produces a blank page, and no error in the error logs:

<?php virtual('/inc/doctype.html'); ?>

I have checked that the file exists and is reachable.

Answer 1

If I recall, this is what I ended up doing to fix it:

I have done this plenty of times before, I must have just overlooked it this time. I had to make two changes to my apache2 site configuration file and run "a2enmod include" and I think that was it.

Config changes

Includes added to Options directive and addoutputfilter for includes in php file, as seen below.

<VirtualHost *:80>
    *** Irrelivent elements removed ***
  <Directory /usr/local/www/e/eisenhowerimaging/www/public>
    Options Indexes FollowSymLinks MultiViews Includes
    *** Irrelivent elements removed ***
    AddOutputFilter INCLUDES .php
  </Directory>
    *** Irrelivent elements removed ***
</VirtualHost>