elseif not working with header location

I'm trying to get userclass to equal home when the user is on either usercp.php or profile.php, but I can't seem to get the following elseif to work:

if ($_SERVER['REQUEST_URI'] === '/usercp.php') {
   $userclass = "home";
} elseif ($_SERVER['REQUEST_URI'] === '/profile.php') {
   $userclass = "home";
} else {
   $userclass = "norm";
}