PHPDaemon\Network\IOStream::look PHP 메소드

    public function look($n, $o = 0)
    {
        if (!isset($this->bev)) {
            return false;
        }
        if ($this->bev->input->length <= $o) {
            return '';
        }
        return $this->bev->input->substr($o, $n);
    }