mysql_select_db ("$rdb");
$uptime = mysql_query ("select max(`starttime`) from `uptime`");
$uptime = time()-mysql_result ($uptime,0);
$sec = $uptime%60;
$uptime = intval ($uptime/60);
$min = $uptime%60;
$uptime = intval ($uptime/60);
$hours = $uptime%24;
$uptime = intval($uptime/24);
$days = $uptime;
echo "Время Работы: $days д $hours ч $min м $sec с
";
?>

mysql_selectdb ($rdb);
mysql_selectdb ("$cdb");
?>

require_once ('config.php');
mysql_connect ("$dbip:$dbport","$dblogin","$dbpass");
?>
mysql_selectdb ($rdb);
mysql_selectdb ("$cdb");
?>
ваш скрипт