library/Rediska/Key/SortedSet.php
public function removeByScore($min, $max)
    {
        return $this->_getRediskaOn()->DeleteFromSortedSetByScore($this->getName(), $min, $max);
    }
public function removeByScore($min, $max)
    {
        return $this->_getRediskaOn()->DeleteFromSortedSetByScore($this->getName(), $min, $max);
    }
Remove members from sorted set by score

@param $min Min score
@param $max Max score
@return integer