SecuritySuite - SuiteCRM and CE Teams

actually i mean the current user

There's a function in /modules/SecurityGroups/SecurityGroup.php called getUserSecurityGroups. If you pass the current user ID to it it will return all groups that the user is assigned to. You can then loop through those to see if in G1.

Thank you Jason. I did it with

require_once ('modules/SecurityGroups/SecurityGroup.php');
global $current_user; 
$user_id = $current_user->id;
$groupArray = array();
$groupArray = getUserSecurityGroups($user_id);
foreach($groupArray as $group){

...