library/Rediska/Key/SortedSet.php
public function intersect($setOrSets, $storeKeyName, $aggregation = 'sum')
    {
        $sets = $this->_prepareSetsForComapre($setOrSets);

        return $this->_getRediskaOn()->intersectSortedSets($sets, $storeKeyName, $aggregation);
    }
public function intersect($setOrSets, $storeKeyName, $aggregation = 'sum')
    {
        $sets = $this->_prepareSetsForComapre($setOrSets);

        return $this->_getRediskaOn()->intersectSortedSets($sets, $storeKeyName, $aggregation);
    }
Store to key intersection between sorted sets

@param string|Rediska_Key_SortedSet|array  $setOrSets    Sorted set key name or object, or array of its
@param string                              $storeKeyName Result sorted set key name
@param string                              $aggregation  Aggregation method: SUM (for default), MIN, MAX.
@return integer