public function decrby($key, $decrement = 1)
    {
        $this->init();
        return $this->driver->decrby($key, (int)$decrement);
    }
public function decrby($key, $decrement = 1)
    {
        $this->init();
        return $this->driver->decrby($key, (int)$decrement);
    }
public function decrby ( $ key , $ decrement = 1 ) { $ this -> init ( ) ; return $ this -> driver -> decrby ( $ key , ( int ) $ decrement ) ; }
Decrement the integer value of a key by the given number
@param string $key
@param integer $decrement
@return integer
Decrement the integer value of a key by the given number