library/Rediska/Key/Set.php
public function move($set, $value)
    {
        if ($set instanceof Rediska_Key_Set) {
            $set = $set->getName();
        }

        return $this->_getRediskaOn()->moveToSet($this->getName(), $set, $value);
    }
public function move($set, $value)
    {
        if ($set instanceof Rediska_Key_Set) {
            $set = $set->getName();
        }

        return $this->_getRediskaOn()->moveToSet($this->getName(), $set, $value);
    }
Move the specified member from one Set to another atomically

@param string|Rediska_Key_Set $set   Set key name or object
@param mixed                  $value Value
@return boolean