[mtakhar]

Did you ever resolve this?

I am having the same issue and it doesn't appear to work in version 4.0.

Can anyone shed some light on this?

I created a global_start plugin with this:

ob_start();
include('rscHeader.php');
$includedphp = ob_get_contents();
ob_end_clean();

I then added this to the style manager/header:

<div>$includedphp</div>

When I view source I get <div></div>