Grant someone access to a page

[DPtheGod]

Hello, I am running a script that will only grab a file for the user if they are specified as a primary member of my administrator usergroup. However, I want the script to grab the file for my "Subscribers" usergroup, which everyone is an additional user to. I have this script set up right now to get the file for the admins:

if ($vbulletin->userinfo['usergroupid'] == '6,161,' )
{
$filename = $_GET['filename'];
}

Does anyone know how I would have to set this up in to make additional users of the specified usergroup gain access as well? Thanks in advance!

[Opserty]

if(is_member_of($vbulletin->userinfo, 6, 161))
{
// This $_GET should be cleaned I hope?...
$filename = $_GET['filename'];
}

[DPtheGod]

Thank you for your help! The code worked! :)

And yeah, it's clean lol. It's going to be for hi-res renders (pre-cut images made for graphics). Thank you for your help. :)