Using External PHP Pages

[ICThawk]

I have a very similar question. My site is www.wavingthewheat.com

I am using a php script to count the number of rows in a table on the database. The script is loaded at www.wavingthewheat.com/chatuser.php

I am trying to have the output of that file displayed in my navbar template. I have created a plugin with the following code

PHP Code:

ob_start();
  include('/home/bluepr12/public_html/wavingthewheat.com/chatuser.php');
  $includedphp = ob_get_contents();
  ob_end_clean();

vB_Template::preRegister('nabvar',array('includedphp ' => $includedphp)); 


In my navbar template I have {vb:raw includedphp} as part of the Chat link.

The php script works and displays the number of online users, however I can't get anything to display in the template using the plugin.