fix bug

lilikuser.php

@@ -333,21 +333,21 @@ class LilikGroup extends pippo{
 
 	function get_id($id){
 		if ($is_posix)
-			return $this->$id;
+			return $id;
 		else
 			return sprintf($user->adapters[1]->dn,$user->id);
 	}
 
 	function add_user($user){
-		return $this->add_in_list('member', get_id($user->id));
+		return $this->add_in_list('member', $this->get_id($user->id));
 	}
 
 	function del_user($user){
-		return $this->del_in_list('member', get_id($user->id));
+		return $this->del_in_list('member', $this->get_id($user->id));
 	}
 
 	function is_user($user){
-		if (in_array(get_id($user->id), $this->get_attr('member'))){
+		if (in_array($this->get_id($user->id), $this->get_attr('member'))){
 			return True;
 		}
 		return False;