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微信app支付 ci框架做的

2018-06-22 04:55:56来源：未知阅读 ()

/**
     * 组合微信app支付获得prepayid
     * @param int $order_num
     */
    private function _wxpay_request($order_num = 0)
    {

        //判断订单编号必须是数组并且不为0
        check_order_num($order_num);

        //引入微信支付类
        libraries_include("wxpay/", "WxPayHelper.app.php");

       //支付接口发起url
       $pay_url = $this->config->item("PAY_URL");

       //通知地址
       $notify_url = $this->config->item("WEIXIN_NOTIFY_URL");


       //微信配置
        $pay_config = $this->config->item("WEIXIN_PAY_NEED");


       $helper = new WxPayHelper();
       //随机字符串
       $nonce_str = $helper->getRandChar(32);


       //获得订单数据
        $order_data = $this->order_model->get_one($order_num);

       $data["appid"]           = $pay_config['appid'];//微信开放平台审核通过的应用APPID
        $data["body"]           = $pay_config['body'];//商品或支付单简要描述
        $data["mch_id"]       = $pay_config['mch_id'];//商户号
        $data["nonce_str"]       = $nonce_str;//随机字符串
        $data["notify_url"]   = $notify_url;//通知地址
        $data["out_trade_no"] = $order_data["order_num"];//商户订单号
        $data["spbill_create_ip"] = $helper->get_client_ip();//终端IP
        $data["total_fee"]        = $order_data['total'] * 100;//总金额
        $data["trade_type"]        = "APP";//交易类型
        $data["sign"]               = $helper->getSign($data, $pay_config['partner']);//签名

        $xml        = $helper->arrayToXml($data);

        $response    = $helper->postXmlCurl($xml, $pay_url);


       //将微信返回的结果xml转成数组
        $responseArr = $helper->xmlToArray($response);
        if(isset($responseArr["return_code"]) && $responseArr["return_code"]=='SUCCESS' && isset($responseArr['result_code']) && $responseArr["result_code"]=='SUCCESS'){


           $data_pay["appid"]        = $pay_config['appid'];
           $data_pay["noncestr"]    = $nonce_str;
           $data_pay["package"]    = "Sign=WXPay";
           $data_pay["partnerid"]    = $pay_config['mch_id'];
           $data_pay["prepayid"]    = $responseArr['prepay_id'];
           $data_pay["timestamp"]    = time();
           $data_pay["sign"]        = $helper->getSign($data_pay, $pay_config['partner']);//二次签名


           $this->response = array('status'=>0, 'msg'=>'success', 'data'=>$data_pay);
        }else{

           $return_msg = $responseArr['err_code_des'];
           $this->response = array('status'=>0, 'msg'=>$return_msg, 'data'=>$responseArr);
        }




    }

//helper.php

<?php

class WxPayHelper{

    /**
     * 验证签名
     * @param array $data
     * @param string $key
     * @return string
     */
   function getVerifySign($data, $key)
   {
       $String = $this->formatParameters($data, false);
       //签名步骤二：在string后加入KEY
       $String = $String . "&key=" . $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;
   }

   function formatParameters($paraMap, $urlencode)
   {
       $buff = "";
       ksort($paraMap);
       foreach ($paraMap as $k => $v) {
           if($k=="sign"){
               continue;
           }
           if ($urlencode) {
               $v = urlencode($v);
           }
           $buff .= $k . "=" . $v . "&";
       }
       $reqPar;
       if (strlen($buff) > 0) {
           $reqPar = substr($buff, 0, strlen($buff) - 1);
       }
       return $reqPar;
   }

   /**
   * 得到签名
   * @param object $obj
   * @param string $api_key
   * @return string
   */
    function getSign($obj, $api_key)
    {
        foreach ($obj as $k => $v)
        {
            $Parameters[strtolower($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 = $String."&key=".$api_key;
        //签名步骤三：MD5加密
        $result = strtoupper(md5($String));
        return $result;
    }

    /**
     * 获取指定长度的随机字符串
     * @param int $length
     * @return Ambigous <NULL, string>
     */
    function getRandChar($length){
       $str = null;
       $strPol = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz";
       $max = strlen($strPol)-1;
       for($i=0;$i<$length;$i++){
            $str.=$strPol[rand(0,$max)];//rand($min,$max)生成介于min和max两个数之间的一个随机整数
       }
       return $str;
    }

    /**
     * 数组转xml
     * @param array $arr
     * @return string
     */
    function arrayToXml($arr)
    {

       header("Content-type: text/xml");

        $xml = '<xml>';

        foreach ($arr as $key=>$val)
        {
             if (is_numeric($val))
             {
                $xml.="<".$key.">".$val."</".$key.">";

             }
             else
                $xml.="<".$key."><![CDATA[".$val."]]></".$key.">";
        }
        $xml.= '</xml>';
        return $xml;
    }

   /**
     * 以post方式提交xml到对应的接口url
     *
     * @param string $xml 需要post的xml数据
     * @param string $url url
     * @param bool $useCert 是否需要证书，默认不需要
     * @param int $second   url执行超时时间，默认30s
     * @throws WxPayException
     */
   function postXmlCurl($xml, $url, $second=30, $useCert=false, $sslcert_path='', $sslkey_path='')
   {

       $ch = curl_init();
       //设置超时
       curl_setopt($ch, CURLOPT_TIMEOUT, $second);
       curl_setopt($ch,CURLOPT_URL, $url);

       //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);
       curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,FALSE);
       curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,FALSE);

       if($useCert == true){
           curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,TRUE);
           curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,2);//严格校验
           //设置证书
           //使用证书：cert 与 key 分别属于两个.pem文件
           curl_setopt($ch,CURLOPT_SSLCERTTYPE,'PEM');
           curl_setopt($ch,CURLOPT_SSLCERT, $sslcert_path);
           curl_setopt($ch,CURLOPT_SSLKEYTYPE,'PEM');
           curl_setopt($ch,CURLOPT_SSLKEY, $sslkey_path);
       }
       //post提交方式
       curl_setopt($ch, CURLOPT_POST, TRUE);
       curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);
       //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);
           return false;
       }
   }

   /**
   * 获取当前服务器的IP
   * @return Ambigous <string, unknown>
   */
    function get_client_ip()
    {
        if (isset($_SERVER['REMOTE_ADDR'])) {
            $cip = $_SERVER['REMOTE_ADDR'];
        } elseif (getenv("REMOTE_ADDR")) {
            $cip = getenv("REMOTE_ADDR");
        } elseif (getenv("HTTP_CLIENT_IP")) {
            $cip = getenv("HTTP_CLIENT_IP");
        } else {
            $cip = "127.0.0.1";
        }
        return $cip;
    }

    /**
     * 将数组转成uri字符串
     * @param array $paraMap
     * @param bool $urlencode
     * @return string
     */
    function formatBizQueryParaMap($paraMap, $urlencode)
    {
        $buff = "";
        ksort($paraMap);
        foreach ($paraMap as $k => $v)
        {
            if($urlencode)
            {
               $v = urlencode($v);
            }
            $buff .= strtolower($k) . "=" . $v . "&";
        }
        $reqPar;
        if (strlen($buff) > 0)
        {
            $reqPar = substr($buff, 0, strlen($buff)-1);
        }
        return $reqPar;
    }

    /**
     * XML转数组
     * @param unknown $xml
     * @return mixed
     */
    function xmlToArray($xml)
    {
       //将XML转为array
       $array_data = json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);
       return $array_data;
    }

}


?>

//异步通知

/**
     * 微信消息地址
     */
    public function weixin_notify()
    {


        libraries_include("wxpay/", "WxPayHelper.app.php");
       $helper = new WxPayHelper();
       //微信配置
        $pay_config = $this->config->item("WEIXIN_PAY_NEED");


       $xml = file_get_contents("php://input");

       if(!$xml){
           exit('<xml><return_code><![CDATA[FAIL]]></return_code><return_msg><![CDATA[ERROR]]></return_msg></xml>');
       }

       $wx_back = $helper->xmlToArray($xml);


       if(empty($wx_back)){
           exit('<xml><return_code><![CDATA[FAIL]]></return_code><return_msg><![CDATA[ERROR]]></return_msg></xml>');
       }
       $checkSign = $helper->getVerifySign($wx_back, $pay_config['partner']);

       //验证签名
       if($checkSign==$wx_back['sign']){

           if (isset($wx_back['result_code']) && $wx_back['result_code']=='SUCCESS') {
               $requestReturnData = file_get_contents("php://input");
               //商户订单号
               $out_trade_no = $wx_back['out_trade_no'];



               //第三方订单编号
                $third_order_num = $wx_back["transaction_id"];

               //交易状态
               $trade_status = $wx_back['result_code'];

               //订单金额保留小数点后两位
                $total_fee = sprintf("%.2f", $wx_back['total_fee']/100);

               //公司业务处理

               //处理后同步返回给微信
               exit('<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>');
           }


       }
        exit('<xml><return_code><![CDATA[FAIL]]></return_code><return_msg><![CDATA[ERROR]]></return_msg></xml>');


    }

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