How do i get userid in profile page?

[nicedreams]

How do i get userid in profile page?

I have a plugin under global start, the variable is being called from the profile page.

ob_start();
$memid = $userinfo[userid];
include("../jim_profile_gallery.php");
$jim_profile_gallery = ob_get_contents();
ob_end_clean();

$userinfo[userid] quals null.

I need $memid to equal the userid of the member's profile I am viewing.

I'm not sure if the plugin is in the right hook location or if i'm just accessing the userid field wrong.

Jim