Endroid\QrCode\QrCode::setPadding PHP Method

    public function setPadding($padding)
    {
        $this->padding = $padding;
        return $this;
    }

function qr_node($url, $sspass, $port, $method = 'aes-256-cfb')
{
    $url = $method . ":{$sspass}@" . $url . ":{$port}";
    $url = "ss://" . base64_encode($url);
    $qrCode = new QrCode();
    $qrCode->setText($url);
    $qrCode->setSize(140);
    $qrCode->setPadding(5);
    $img = $qrCode->getDataUri();
    return $img;
}