小程序调用支付（二）

//CURL 请求
    public function curl($url = '',$request = [],$header = [],$method = 'POST'){
        $header[] = 'Accept-Encoding: gzip, deflate';//gzip解压内容
        $ch = curl_init();   //1.初始化
        curl_setopt($ch, CURLOPT_URL, $url); //2.请求地址
        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $method);//3.请求方式
        //4.参数如下
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);//https
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
        curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (compatible; MSIE 5.01; Windows NT 5.0)');//模拟浏览器
        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
        curl_setopt($ch, CURLOPT_AUTOREFERER, 1);
        curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
        curl_setopt($ch, CURLOPT_ENCODING, 'gzip,deflate');
 
        if ($method == "POST") {//5.post方式的时候添加数据
            curl_setopt($ch, CURLOPT_POSTFIELDS, $request);
        }
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        $tmpInfo = curl_exec($ch);//6.执行
 
        if (curl_errno($ch)) {//7.如果出错
            return curl_error($ch);
        }
        curl_close($ch);//8.关闭
        return $tmpInfo;
    }
    //处理回调
    public function wx_notify(){
           //接收微信返回的数据数据,返回的xml格式
           $xmlData = file_get_contents('php://input');
           //将xml格式转换为数组
           $data = $this->FromXml($xmlData);
           //用日志记录检查数据是否接受成功，验证成功一次之后，可删除。
           $file = fopen('./log.txt', 'a+');
           fwrite($file,var_export($data,true));
           //为了防止假数据，验证签名是否和返回的一样。
           //记录一下，返回回来的签名，生成签名的时候，必须剔除sign字段。
           $sign = $data['sign'];
           unset($data['sign']);
           if($sign == $this->getSign($data)){
            //签名验证成功后，判断返回微信返回的
            if ($data['result_code'] == 'SUCCESS') {
                //根据返回的订单号做业务逻辑
                $arr = array(
                       'ispay' => 1,
                    );
                $re = db('uniform_order')->where(['ordersn'=>$data['out_trade_no']])->update($arr);
                //处理完成之后，告诉微信成功结果！
                if($re){
                    echo '<xml>
              <return_code><![CDATA[SUCCESS]]></return_code>
              <return_msg><![CDATA[OK]]></return_msg>
              </xml>';exit();
                }
            }
            //支付失败，输出错误信息
            else{
                $file = fopen('./log.txt', 'a+');
                fwrite($file,"错误信息：".$data['return_msg'].date("Y-m-d H:i:s"),time()."\r\n");    
            }
        }
        else{
            $file = fopen('./log.txt', 'a+');
            fwrite($file,"错误信息：签名验证失败".date("Y-m-d H:i:s"),time()."\r\n");    
        }
    }
    //生成随机字符串
    public function rand($len)
    {
        $str="0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
        $key = "";
        for($i=0;$i<$len;$i++)
        {
            $key .= $str{mt_rand(0,32)};    //生成php随机数
        }
        return $key;
    }

前端注意事项：

timeStamp.toString();

wx.requestPayment({
            timeStamp: d.data.timeStamp.toString(),
            nonceStr: d.data.nonceStr,
            package: d.data.package,
            signType: d.data.signType,
            paySign: d.data.sign,
            success (res) { 
              console.log(res);
              wx.showToast({
                title: '支付完成',
                icon: 'none',
                duration: 2000,
                success(){
                  wx.navigateTo({
                    url: '../detail/index?id='+id+"&&s=1"
                  })
                }
              })
            },
            fail (res) { }
          })