小程序支付

@@ -166,7 +166,7 @@ class PayController extends HomeBaseController
      */
     public function luckyMoney(){
         //todo 退款逻辑应该加入百荣签名验证规则，避免出现被盗用
-        /*$param=$this->request->param();
+       /* $param=$this->request->param();
         $signature = $param['s'];
         $arithmetic['timeStamp']= $param['t'];
         $arithmetic['randomStr']= $param['r'];

+<?php
+/*
+ * 小程序微信支付
+ */
+class WeixinPay {
+    protected $appid;
+    protected $mch_id;
+    protected $key;
+    protected $openid;
+    protected $out_trade_no;
+    protected $body;
+    protected $total_fee;
+    protected $notify_url;
+    function __construct($openid,$out_trade_no,$body,$total_fee,$notify_url) {
+        $this->appid = config('mini_app_id');
+        $this->mch_id = config('mch_id');
+        $this->key = config('key');
+        $this->openid = $openid;
+        $this->out_trade_no = $out_trade_no;
+        $this->body = $body;
+        $this->total_fee = $total_fee;
+        $this->notify_url = $notify_url;
+    }
+    public function pay() {
+        //统一下单接口
+        $return = $this->weixinapp();
+        return $return;
+    }
+    //统一下单接口
+    private function unifiedorder() {
+        $url = 'https://api.mch.weixin.qq.com/pay/unifiedorder';
+        $parameters = array(
+            'appid' => $this->appid, //小程序ID
+            'mch_id' => $this->mch_id, //商户号
+            'nonce_str' => $this->createNoncestr(), //随机字符串
+            'body' => $this->body,
+            'out_trade_no'=> $this->out_trade_no,
+            'total_fee' => $this->total_fee,
+            'spbill_create_ip' => get_client_ip(0,true),
+            'notify_url' => $this->notify_url,
+            'openid' => $this->openid, //用户id
+            'trade_type' => 'JSAPI'//交易类型
+        );
+        //统一下单签名
+        $parameters['sign'] = $this->getSign($parameters);
+        $xmlData = $this->arrayToXml($parameters);
+        $return = $this->xmlToArray($this->postXmlCurl($xmlData, $url, 60));
+        return $return;
+    }
+    private static function postXmlCurl($xml, $url, $second = 30)
+    {
+        $ch = curl_init();
+        //设置超时
+        curl_setopt($ch, CURLOPT_TIMEOUT, $second);
+        curl_setopt($ch, CURLOPT_URL, $url);
+        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
+        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE); //严格校验
+        //设置header
+        curl_setopt($ch, CURLOPT_HEADER, FALSE);
+        //要求结果为字符串且输出到屏幕上
+        curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
+        //post提交方式
+        curl_setopt($ch, CURLOPT_POST, TRUE);
+        curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);
+        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 20);
+        curl_setopt($ch, CURLOPT_TIMEOUT, 40);
+        set_time_limit(0);
+        //运行curl
+        $data = curl_exec($ch);
+        //返回结果
+        if ($data) {
+            curl_close($ch);
+            return $data;
+        } else {
+            $error = curl_errno($ch);
+            curl_close($ch);
+            throw new ErrorException("curl出错，错误码:$error");
+        }
+    }
+    //数组转换成xml
+    private function arrayToXml($arr) {
+        $xml = "<root>";
+        foreach ($arr as $key => $val) {
+            if (is_array($val)) {
+                $xml .= "<" . $key . ">" . $this->arrayToXml($val) . "</" . $key . ">";
+            } else {
+                $xml .= "<" . $key . ">" . $val . "</" . $key . ">";
+            }
+        }
+        $xml .= "</root>";
+        return $xml;
+    }
+    //xml转换成数组
+    private function xmlToArray($xml) {
+        //禁止引用外部xml实体
+        libxml_disable_entity_loader(true);
+        $xmlstring = simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA);
+        $val = json_decode(json_encode($xmlstring), true);
+        return $val;
+    }
+    //微信小程序接口
+    private function weixinapp() {
+        //统一下单接口
+        $unifiedorder = $this->unifiedorder();
+        $parameters = array(
+            'appId' => $this->appid, //小程序ID
+            'timeStamp' => '' . time() . '', //时间戳
+            'nonceStr' => $this->createNoncestr(), //随机串
+            'package' => 'prepay_id=' . $unifiedorder['prepay_id'], //数据包
+            'signType' => 'MD5'//签名方式
+        );
+        //签名
+        $parameters['paySign'] = $this->getSign($parameters);
+        return $parameters;
+    }
+    //作用：产生随机字符串，不长于32位
+    private function createNoncestr($length = 32) {
+        $chars = "abcdefghijklmnopqrstuvwxyz0123456789";
+        $str = "";
+        for ($i = 0; $i < $length; $i++) {
+            $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
+        }
+        return $str;
+    }
+    //作用：生成签名
+    private function getSign($Obj) {
+        foreach ($Obj as $k => $v) {
+            $Parameters[$k] = $v;
+        }
+        //签名步骤一：按字典序排序参数
+        ksort($Parameters);
+        $String = $this->formatBizQueryParaMap($Parameters, false);
+        //签名步骤二：在string后加入KEY
+        $String = $String . "&key=" . $this->key;
+        //签名步骤三：MD5加密
+        $String = md5($String);
+        //签名步骤四：所有字符转为大写
+        $result_ = strtoupper($String);
+        return $result_;
+    }
+    ///作用：格式化参数，签名过程需要使用
+    private function formatBizQueryParaMap($paraMap, $urlencode) {
+        $buff = "";
+        ksort($paraMap);
+        foreach ($paraMap as $k => $v) {
+            if ($urlencode) {
+                $v = urlencode($v);
+            }
+            $buff .= $k . "=" . $v . "&";
+        }
+        $reqPar='';
+        if (strlen($buff) > 0) {
+            $reqPar = substr($buff, 0, strlen($buff) - 1);
+        }
+        return $reqPar;
+    }
+}
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