PHP implements Alipay face-to-face payment (scan code payment) function

This article mainly introduces PHP to implement Alipay face-to-face payment and scan code payment functions. It has a certain reference value. Interested friends can refer to

Many PHP Alipay payments on the Internet The access tutorials are quite complex and require configuration and introduction of many files. I have sorted them out and provided a single-file version. I hope it can bring some help and reference to those who want to access Alipay payment.

Scan code payment refers to a mode in which users open the "scan" function in Alipay wallet, scan the QR code displayed by the merchant in a certain cashier scene, and make payment. This model is suitable for offline physical store payment, face-to-face payment and other scenarios.

Run the following php file code to generate a payment QR code image, and use Alipay to scan it to make payment.

One PHP file to handle the Alipay series

One PHP file to handle the WeChat payment series

Environment dependencies

PHP5.0 or above, And you need to enable CURL service and SSL service.

Notes

1. The configuration information at the beginning of the file must be complete
2. The merchant’s private key must be filled in with the private key corresponding to the signature algorithm type. How to generate a secret key? Key reference:
2.1 Generate RSA key
2.2 Create application

Code

<?php
header(&#39;Content-type:text/html; Charset=utf-8&#39;);
$appid = &#39;xxxxx&#39;; //https://open.alipay.com 账户中心->密钥管理->开放平台密钥，填写添加了电脑网站支付的应用的APPID
$notifyUrl = &#39;http://www.xxx.com/alipay/notify.php&#39;;   //付款成功后的异步回调地址
$outTradeNo = uniqid();   //你自己的商品订单号
$payAmount = 0.01;     //付款金额，单位:元
$orderName = &#39;支付测试&#39;;  //订单标题
$signType = &#39;RSA2&#39;;    //签名算法类型，支持RSA2和RSA，推荐使用RSA2
//商户私钥，填写对应签名算法类型的私钥，如何生成密钥参考：https://docs.open.alipay.com/291/105971和https://docs.open.alipay.com/200/105310
$saPrivateKey=&#39;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&#39;;
$aliPay = new AlipayService($appid,$returnUrl,$notifyUrl,$saPrivateKey);
$result = $aliPay->doPay($payAmount,$outTradeNo,$orderName,$returnUrl,$notifyUrl);
$result = $result[&#39;alipay_trade_precreate_response&#39;];
if($result[&#39;code&#39;] && $result[&#39;code&#39;]==&#39;10000&#39;){
  //生成二维码
  $url = &#39;http://pan.baidu.com/share/qrcode?w=300&h=300&url=&#39;.$result[&#39;qr_code&#39;];
  echo "<img  src=&#39;{$url}&#39; style=&#39;width:300px;&#39; alt="PHP implements Alipay face-to-face payment (scan code payment) function" ><br>";
  echo &#39;二维码内容：&#39;.$result[&#39;qr_code&#39;];
}else{
  echo $result[&#39;msg&#39;].&#39; : &#39;.$result[&#39;sub_msg&#39;];
}
class AlipayService
{
  protected $appId;
  protected $returnUrl;
  protected $notifyUrl;
  //私钥文件路径
  protected $rsaPrivateKeyFilePath;
  //私钥值
  protected $rsaPrivateKey;
  public function __construct($appid, $returnUrl, $notifyUrl,$saPrivateKey)
  {
    $this->appId = $appid;
    $this->returnUrl = $returnUrl;
    $this->notifyUrl = $notifyUrl;
    $this->charset = &#39;utf8&#39;;
    $this->rsaPrivateKey=$saPrivateKey;
  }
  /**
   * 发起订单
   * @param float $totalFee 收款总费用 单位元
   * @param string $outTradeNo 唯一的订单号
   * @param string $orderName 订单名称
   * @param string $notifyUrl 支付结果通知url 不要有问号
   * @param string $timestamp 订单发起时间
   * @return array
   */
  public function doPay($totalFee, $outTradeNo, $orderName, $returnUrl,$notifyUrl)
  {
    //请求参数
    $requestConfigs = array(
      &#39;out_trade_no&#39;=>$outTradeNo,
      &#39;total_amount&#39;=>$totalFee, //单位 元
      &#39;subject&#39;=>$orderName, //订单标题
    );
    $commonConfigs = array(
      //公共参数
      &#39;app_id&#39; => $this->appId,
      &#39;method&#39; => &#39;alipay.trade.precreate&#39;,       //接口名称
      &#39;format&#39; => &#39;JSON&#39;,
      &#39;charset&#39;=>$this->charset,
      &#39;sign_type&#39;=>&#39;RSA2&#39;,
      &#39;timestamp&#39;=>date(&#39;Y-m-d H:i:s&#39;),
      &#39;version&#39;=>&#39;1.0&#39;,
      &#39;notify_url&#39; => $notifyUrl,
      &#39;biz_content&#39;=>json_encode($requestConfigs),
    );
    $commonConfigs["sign"] = $this->generateSign($commonConfigs, $commonConfigs[&#39;sign_type&#39;]);
    $result = $this->curlPost(&#39;https://openapi.alipay.com/gateway.do&#39;,$commonConfigs);
    return json_decode($result,true);
  }
  public function generateSign($params, $signType = "RSA") {
    return $this->sign($this->getSignContent($params), $signType);
  }
  protected function sign($data, $signType = "RSA") {
    $priKey=$this->rsaPrivateKey;
    $res = "-----BEGIN RSA PRIVATE KEY-----\n" .
      wordwrap($priKey, 64, "\n", true) .
      "\n-----END RSA PRIVATE KEY-----";
    ($res) or die(&#39;您使用的私钥格式错误，请检查RSA私钥配置&#39;);
    if ("RSA2" == $signType) {
      openssl_sign($data, $sign, $res, version_compare(PHP_VERSION,&#39;5.4.0&#39;, &#39;<&#39;) ? SHA256 : OPENSSL_ALGO_SHA256); //OPENSSL_ALGO_SHA256是php5.4.8以上版本才支持
    } else {
      openssl_sign($data, $sign, $res);
    }
    $sign = base64_encode($sign);
    return $sign;
  }
  /**
   * 校验$value是否非空
   * if not set ,return true;
   *  if is null , return true;
   **/
  protected function checkEmpty($value) {
    if (!isset($value))
      return true;
    if ($value === null)
      return true;
    if (trim($value) === "")
      return true;
    return false;
  }
  public function getSignContent($params) {
    ksort($params);
    $stringToBeSigned = "";
    $i = 0;
    foreach ($params as $k => $v) {
      if (false === $this->checkEmpty($v) && "@" != substr($v, 0, 1)) {
        // 转换成目标字符集
        $v = $this->characet($v, $this->charset);
        if ($i == 0) {
          $stringToBeSigned .= "$k" . "=" . "$v";
        } else {
          $stringToBeSigned .= "&" . "$k" . "=" . "$v";
        }
        $i++;
      }
    }
    unset ($k, $v);
    return $stringToBeSigned;
  }
  /**
   * 转换字符集编码
   * @param $data
   * @param $targetCharset
   * @return string
   */
  function characet($data, $targetCharset) {
    if (!empty($data)) {
      $fileType = $this->charset;
      if (strcasecmp($fileType, $targetCharset) != 0) {
        $data = mb_convert_encoding($data, $targetCharset, $fileType);
        //$data = iconv($fileType, $targetCharset.&#39;//IGNORE&#39;, $data);
      }
    }
    return $data;
  }
  public function curlPost($url = &#39;&#39;, $postData = &#39;&#39;, $options = array())
  {
    if (is_array($postData)) {
      $postData = http_build_query($postData);
    }
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);
    curl_setopt($ch, CURLOPT_TIMEOUT, 30); //设置cURL允许执行的最长秒数
    if (!empty($options)) {
      curl_setopt_array($ch, $options);
    }
    //https请求 不验证证书和host
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
    $data = curl_exec($ch);
    curl_close($ch);
    return $data;
  }
}

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