Need help adding usergroup permissions to pho forum block with ob_start

[Scalemotorcars]

Im working on a php sidebar block and need a little help with it.

I want to change the php block from one to another using the IF Usergroup condition but Im having problems with the code.

This works but I cant figure how to change the $my_output to ob_start.

PHP Code:

if(is_member_of(vB::$vbulletin->userinfo,24)){
$my_output='<center><b>STANDARD HTML HERE</b></center>';
}else{
$my_output='THIS IS WHERE THE I WANT PHP NOT HTML';
}
return$my_output; 


The below code is what Im using and it works fine in a standard php block without a usergroup condition.

PHP Code:

ob_start(); 
require_once($_SERVER['DOCUMENT_ROOT'] . "/phpbay/ebay.php");
phpBayAPI("(keyword*)", "5", "888", "excluded*", "", true);
$output=ob_get_contents(); 
ob_end_clean(); 


Any help would be great. Thanks.. :up: