微信支付之H5支付

  1. <?php
  2. /**
  3.  * H5支付
  4.  *
  5.  * 常见错误：
  6.  * 1.网络环境未能通过安全验证，请稍后再试（原因：终端IP(spbill_create_ip)与用户实际调起支付时微信侧检测到的终端IP不一致）
  7.  * 2.商家参数格式有误，请联系商家解决（原因：当前调起H5支付的referer为空）
  8.  * 3.商家存在未配置的参数，请联系商家解决（原因：当前调起H5支付的域名与申请H5支付时提交的授权域名不一致）
  9.  * 4.支付请求已失效，请重新发起支付（原因：有效期为5分钟，如超时请重新发起支付）
  10.  * 5.请在微信外打开订单，进行支付（原因：H5支付不能直接在微信客户端内调起）
  11.  */
  12. header('Content-type:text/html; Charset=utf-8');
  13. /** 请填写以下配置信息 */
  14. $mchid = 'xxxxx';          //微信支付商户号 PartnerID 通过微信支付商户资料审核后邮件发送
  15. $appid = 'xxxxx';  //微信支付申请对应的公众号的APPID
  16. $appKey = 'xxxxx';   //微信支付申请对应的公众号的APP Key
  17. $apiKey = 'xxxxx';   //https://pay.weixin.qq.com 帐户设置-安全设置-API安全-API密钥-设置API密钥
  18. $outTradeNo = uniqid();     //你自己的商品订单号
  19. $payAmount = 0.01;          //付款金额，单位:元
  20. $orderName = '支付测试';    //订单标题
  21. $notifyUrl = 'http://www.xxx.com/wx/notify.php';     //付款成功后的回调地址(不要有问号)
  22. $returnUrl = 'http://www.baidu.com';     //付款成功后，页面跳转的地址
  23. $wapUrl = 'www.xxx.com';   //WAP网站URL地址
  24. $wapName = 'H5支付';       //WAP 网站名
  25. /** 配置结束 */
  27. $wxPay = new WxpayService($mchid,$appid,$apiKey);
  28. $wxPay->setTotalFee($payAmount);
  29. $wxPay->setOutTradeNo($outTradeNo);
  30. $wxPay->setOrderName($orderName);
  31. $wxPay->setNotifyUrl($notifyUrl);
  32. $wxPay->setReturnUrl($returnUrl);
  33. $wxPay->setWapUrl($wapUrl);
  34. $wxPay->setWapName($wapName);
  36. $mwebUrl= $wxPay->createJsBizPackage($payAmount,$outTradeNo,$orderName,$notifyUrl);
  37. echo "<h1><a href='{$mwebUrl}'>点击跳转至支付页面</a></h1>";
  38. exit();
  39. class WxpayService
  40. {
  41.     protected $mchid;
  42.     protected $appid;
  43.     protected $apiKey;
  44.     protected $totalFee;
  45.     protected $outTradeNo;
  46.     protected $orderName;
  47.     protected $notifyUrl;
  48.     protected $returnUrl;
  49.     protected $wapUrl;
  50.     protected $wapName;
  52.     public function __construct($mchid, $appid, $key)
  53.     {
  54.         $this->mchid = $mchid;
  55.         $this->appid = $appid;
  56.         $this->apiKey = $key;
  57.     }
  59.     public function setTotalFee($totalFee)
  60.     {
  61.         $this->totalFee = $totalFee;
  62.     }
  63.     public function setOutTradeNo($outTradeNo)
  64.     {
  65.         $this->outTradeNo = $outTradeNo;
  66.     }
  67.     public function setOrderName($orderName)
  68.     {
  69.         $this->orderName = $orderName;
  70.     }
  71.     public function setWapUrl($wapUrl)
  72.     {
  73.         $this->wapUrl = $wapUrl;
  74.     }
  75.     public function setWapName($wapName)
  76.     {
  77.         $this->wapName = $wapName;
  78.     }
  79.     public function setNotifyUrl($notifyUrl)
  80.     {
  81.         $this->notifyUrl = $notifyUrl;
  82.     }
  83.     public function setReturnUrl($returnUrl)
  84.     {
  85.         $this->returnUrl = $returnUrl;
  86.     }
  88.     /**
  89.      * 发起订单
  90.      * @return array
  91.      */
  92.     public function createJsBizPackage()
  93.     {
  94.         $config = array(
  95.             'mch_id' => $this->mchid,
  96.             'appid' => $this->appid,
  97.             'key' => $this->apiKey,
  98.         );
  99.         $scene_info = array(
  100.             'h5_info' =>array(
  101.                 'type'=>'Wap',
  102.                 'wap_url'=>$this->wapUrl,
  103.                 'wap_name'=>$this->wapName,
  104.             )
  105.         );
  106.         $unified = array(
  107.             'appid' => $config['appid'],
  108.             'attach' => 'pay',             //商家数据包，原样返回，如果填写中文，请注意转换为utf-8
  109.             'body' => $this->orderName,
  110.             'mch_id' => $config['mch_id'],
  111.             'nonce_str' => self::createNonceStr(),
  112.             'notify_url' => $this->notifyUrl,
  113.             'out_trade_no' => $this->outTradeNo,
  114.             'spbill_create_ip' => $_SERVER['REMOTE_ADDR'],
  115.             'total_fee' => intval($this->totalFee * 100),       //单位 转为分
  116.             'trade_type' => 'MWEB',
  117.             'scene_info'=>json_encode($scene_info)
  118.         );
  119.         $unified['sign'] = self::getSign($unified, $config['key']);
  120.         $responseXml = self::curlPost('https://api.mch.weixin.qq.com/pay/unifiedorder', self::arrayToXml($unified));
  121.         $unifiedOrder = simplexml_load_string($responseXml, 'SimpleXMLElement', LIBXML_NOCDATA);
  122.         if ($unifiedOrder->return_code != 'SUCCESS') {
  123.             die($unifiedOrder->return_msg);
  124.         }
  125.         if($unifiedOrder->mweb_url){
  126.             return $unifiedOrder->mweb_url.'&redirect_url='.urlencode($this->returnUrl);
  127.         }
  128.         exit('error');
  129.     }
  130.     public static function curlPost($url = '', $postData = '', $options = array())
  131.     {
  132.         if (is_array($postData)) {
  133.             $postData = http_build_query($postData);
  134.         }
  135.         $ch = curl_init();
  136.         curl_setopt($ch, CURLOPT_URL, $url);
  137.         curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  138.         curl_setopt($ch, CURLOPT_POST, 1);
  139.         curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);
  140.         curl_setopt($ch, CURLOPT_TIMEOUT, 30); //设置cURL允许执行的最长秒数
  141.         if (!empty($options)) {
  142.             curl_setopt_array($ch, $options);
  143.         }
  144.         //https请求 不验证证书和host
  145.         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
  146.         curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
  147.         $data = curl_exec($ch);
  148.         curl_close($ch);
  149.         return $data;
  150.     }
  151.     public static function createNonceStr($length = 16)
  152.     {
  153.         $chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
  154.         $str = '';
  155.         for ($i = 0; $i < $length; $i++) {
  156.             $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
  157.         }
  158.         return $str;
  159.     }
  160.     public static function arrayToXml($arr)
  161.     {
  162.         $xml = "<xml>";
  163.         foreach ($arr as $key => $val) {
  164.             if (is_numeric($val)) {
  165.                 $xml .= "<" . $key . ">" . $val . "</" . $key . ">";
  166.             } else
  167.                 $xml .= "<" . $key . "><![CDATA[" . $val . "]]></" . $key . ">";
  168.         }
  169.         $xml .= "</xml>";
  170.         return $xml;
  171.     }
  172.     /**
  173.      * 获取签名
  174.      */
  175.     public static function getSign($params, $key)
  176.     {
  177.         ksort($params, SORT_STRING);
  178.         $unSignParaString = self::formatQueryParaMap($params, false);
  179.         $signStr = strtoupper(md5($unSignParaString . "&key=" . $key));
  180.         return $signStr;
  181.     }
  182.     protected static function formatQueryParaMap($paraMap, $urlEncode = false)
  183.     {
  184.         $buff = "";
  185.         ksort($paraMap);
  186.         foreach ($paraMap as $k => $v) {
  187.             if (null != $v && "null" != $v) {
  188.                 if ($urlEncode) {
  189.                     $v = urlencode($v);
  190.                 }
  191.                 $buff .= $k . "=" . $v . "&";
  192.             }
  193.         }
  194.         $reqPar = '';
  195.         if (strlen($buff) > 0) {
  196.             $reqPar = substr($buff, 0, strlen($buff) - 1);
  197.         }
  198.         return $reqPar;
  199.     }
  200. }


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