public function zRangeByScore($key, $min, $max, $withscores = false, array $limit = null)
{
$args = array($key, $min, $max);
if ($withscores) {
$args[] = self::WITHSCORES;
}
if (!empty($limit)) {
$args[] = 'LIMIT';
$args[] = $limit[0];
$args[] = $limit[1];
}
return $this->__call('zRangeByScore', $args);
}