DB::queryOneColumn PHP Method

    public static function queryOneColumn()
    {
        $args = func_get_args();
        return call_user_func_array(array(DB::getMDB(), 'queryOneColumn'), $args);
    }

function teampass_get_randkey()
{
    global $server, $user, $pass, $database, $pre, $link;
    teampass_connect();
    $response = DB::queryOneColumn("rand_key", "select * from " . $pre . "keys limit 0,1");
    return $response;
}