MatthiasMullie\Scrapbook\Adapters\Memcached::decrement PHP Method

    public function decrement($key, $offset = 1, $initial = 0, $expire = 0)
    {
        if ($offset <= 0 || $initial < 0) {
            return false;
        }
        /*
         * Not doing \Memcached::decrement for the reasons described in:
         * @see increment()
         */
        return $this->doIncrement($key, -$offset, $initial, $expire);
    }