$db->vardump($results) = No Value / False

I'am can't get any return from ezsql , can anyone explain why this is ?
my returns with mysql-front with this query are always true.
php version 4.4
mysql version 3.23

Thanks.

Code:

include_once "shared/ez_sql_core.php";
require "mysql/ez_sql_mysql.php";

$db = new ezSQL_mysql('root','','timeline','localhost');

$results = $db->get_results("SELECT login_time FROM logfile_login");

$db->vardump($results);