AlipaySubmit::query_timestamp PHP Method

    function query_timestamp()
    {
        $url = $this->alipay_gateway_new . "service=query_timestamp&partner=" . trim(strtolower($this->alipay_config['partner'])) . "&_input_charset=" . trim(strtolower($this->alipay_config['input_charset']));
        $encrypt_key = "";
        $doc = new DOMDocument();
        $doc->load($url);
        $itemEncrypt_key = $doc->getElementsByTagName("encrypt_key");
        $encrypt_key = $itemEncrypt_key->item(0)->nodeValue;
        return $encrypt_key;
    }

  private function creditpay ($order, $good, $orderPrice, $bank) 
  {
    $alipay_config = $this->payConfig();
  
    $payment_type = 1;

    $notify_url = "http://www.51linpai.com/order/payed";

    //页面跳转同步通知页面路径
    $return_url = "http://www.51linpai.com/order/payed";

    if ($this->debug) {

      $return_url = "http://www.51linpai.com:8000/order/payed";

    } else {

      $return_url = "http://www.51linpai.com/order/payed";

    }

    //商户网站订单系统中唯一订单号
    $out_trade_no = $order->code;

    //订单名称
    $subject = $good->name . ' * ' . $order->num;

    //订单金额
    $total_fee = 0.1;// $orderPrice->final_price;

    //订单描述
    $body = '测试订单描述';

    //商品展示地址
    $show_url = "http://www.51linpai.com/goods?gid={$good->id}";

    //支付方式
    $paymethod = "bankPay";

    //默认网银
    $defaultbank = $bank;

    //客户端ip地址
    $exter_invoke_ip = $_SERVER['REMOTE_ADDR'];

    $parameter = array(
       "service" => "create_direct_pay_by_user",
       "partner" => trim($alipay_config['partner']),
       "seller_email" => trim($alipay_config['seller_email']),
       "payment_type"  => $payment_type,
       "notify_url"  => $notify_url,
       "return_url"  => $return_url,
       "out_trade_no"  => $out_trade_no,
       "subject" => $subject,
       "total_fee" => $total_fee,
       "body"  => $body,
       "show_url"  => $show_url,
       "paymethod" => $paymethod,
       "defaultbank" => $defaultbank,
       "exter_invoke_ip" => $exter_invoke_ip,
       "_input_charset"  => trim(strtolower($alipay_config['input_charset']))
     );

    $alipaySubmit = new \AlipaySubmit($alipay_config);

    $parameter['anti_phishing_key'] = $alipaySubmit->query_timestamp();

    $html_text = $alipaySubmit->buildRequestForm($parameter,"get", "<h2>正在跳转到支付页面...</h2>");

    return $html_text; 
  
  }