$_GET with Switch Statement

i have alot of get values that define the page the user gonna see , for example for "profile" i will show the profile page and so on..

to find out what page to display i tried to do something like that:

switch ($_GET) {
     case 'profile':
         require_once('function/profile.php');
         break;
     case 'team':
         require_once('function/team.php');
         break;
 

but it shows no result..

i send the GET request like that : index.php?profile , for example..

what is the problem here and how can i can manage to do something similar that work as well. thank you in advance!

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