Urgent: a question regarding Plugin in Global start

[lorddomain]

Hi all,

I have a php file and I want to plugin a file (header of my forum). Everything works well, except it has this line on the screen: "= ob_get_contents(); ob_end_clean(); ?> "

I used flowing code in the plugin: ob_start();
include('skin/hforum.php');
$includedphp = ob_get_contents();
ob_end_clean();

Do you know if I did anything wrong? Your help is appreciated.

Thanks