MessagePack\BufferUnpacker::unpackStr PHP Метод

    private function unpackStr($length)
    {
        if (!$length) {
            return '';
        }
        if (!isset($this->buffer[$this->offset + $length - 1])) {
            throw new InsufficientDataException($length, \strlen($this->buffer) - $this->offset);
        }
        $str = \substr($this->buffer, $this->offset, $length);
        $this->offset += $length;
        return $str;
    }