public function getRandomUsers(){
            $query = $this->db->query('SELECT UserID FROM Persooninfo');
            $list = $query->result_array();
            shuffle($list);
            $query = $this->db->query('SELECT User.UserID, Voornaam, Achternaam, Geboortedatum, Woonplaats, User.Email, Geslacht, Biografie
                FROM Persooninfo, User
                WHERE Persooninfo.UserID = User.UserID and
                (User.UserID = ? or User.UserID = ? or User.UserID = ? or User.UserID = ? or User.UserID = ? or User.UserID = ?)',
            array($list[1],$list[2],$list[3],$list[4],$list[5],$list[0]));
            $list = $query->result_array();
            shuffle($list);
            return $list;
        }