支付.md

支付通知文件,返回如下信息,ewei_shopv2\payment\wechat\notify.php 通过 $this->get['attach']获取

Array
(
    [get] => Array
        (
            [appid] => wx8a86306dcc35b538
            [attach] => 5:17 //前者为公众号id,后者是支付方式代码
            [bank_type] => CFT
            [cash_fee] => 1
            [device_info] => ewei_shopv2
            [fee_type] => CNY
            [is_subscribe] => Y
            [mch_id] => 1485040312
            [nonce_str] => d1l11eOETpaY5AeRwC1E18e4T388O14o
            [openid] => o2SfSwZusX6_wKAFOBGrBAiUpPNk
            [out_trade_no] => OS20171128143422642364
            [result_code] => SUCCESS
            [return_code] => SUCCESS
            [sign] => 5B1B86703788788B021E51ED5D667E74
            [time_end] => 20171128143428
            [total_fee] => 1
            [trade_type] => JSAPI
            [transaction_id] => 4200000042201711287611180681
        )

    [type] => 17
    [total_fee] => 0.01
    [set] => 
    [setting] => 
    [sec] => 
    [sign] => 
    [isapp] => 
    [is_jie] => 
)

退款处理

/**
     * 支付退款,传入以下参数即可实现退款,退款金额必须小于等于总金额,对于退款失败的订单需要重新传入退款订单号,不要新生成
     * 2018.1.12
     * yoby
     * 参数
     *  $openid
     * $ordersn商户订单号
     * $wechatid  退款订单号,自己生成
     * $total_fee总金额
     * $refund_fee退款金额
     * $merchid 商家入驻id
     */
   function wechat_refund($openid,$ordersn,$wechatid,$total_fee,$refund_fee,$merchid){
        global $_W;
       if (empty($openid)) {
           return error(-1, 'openid不能为空');
       }
       $rs = pdo_fetch('select * from '.tablename('ewei_shop_merch_user').' where id=:id',[':id'=>$merchid]);
        $sec = iunserializer($rs['sec']);
        $rs['sec'] = $sec;
         $apikey = $rs['prikey'];
        //退款签名
       $url = 'https://api.mch.weixin.qq.com/secapi/pay/refund';
       $pars = [
           'appid'=>$rs['appid'],
           'mch_id'=>$rs['mchid'],
           'nonce_str'=>random(8),
           'out_trade_no'=>$ordersn,
           'out_refund_no'=>$wechatid,
            'total_fee'=>$total_fee,
           'refund_fee'=>$refund_fee


       ];
       ksort($pars, SORT_STRING);
       $string1 = '';

       foreach ($pars as $k => $v) {
           $string1 .= $k . '=' . $v . '&';
       }

       $string1 .= 'key=' . $apikey;
       $pars['sign'] = strtoupper(md5($string1));

      
       $xml = array2xml($pars);
       $extras = array();
       $errmsg = '未上传完整的微信支付证书，请到入驻商户信息中上传!';
       if (is_array($sec)) {
           if (empty($sec['cert']) || empty($sec['key']) || empty($sec['root'])) {
               if ($_W['ispost']) {
                   show_json(0, array('message' => $errmsg));
               }

               show_message($errmsg, '', 'error');
           }

           $certfile = IA_ROOT . '/addons/ewei_shopv2/cert/' . random(8);
           file_put_contents($certfile, $sec['cert']);
           $keyfile = IA_ROOT . '/addons/ewei_shopv2/cert/' . random(8);
           file_put_contents($keyfile, $sec['key']);
           $rootfile = IA_ROOT . '/addons/ewei_shopv2/cert/' . random(8);
           file_put_contents($rootfile, $sec['root']);
           $extras['CURLOPT_SSLCERT'] = $certfile;
           $extras['CURLOPT_SSLKEY'] = $keyfile;
           $extras['CURLOPT_CAINFO'] = $rootfile;
       }
       load()->func('communication');
       $resp = ihttp_request($url, $xml, $extras);

       //load()->func('logging');
      // logging_run(date('m-d H:i:s').'退款日志'.$resp['content']);
      @unlink($certfile);
     @unlink($keyfile);
     @unlink($rootfile);
       if (empty($resp['content'])) {
           return error(-2, '网络错误');
       }
       $arr = json_decode(json_encode(simplexml_load_string($resp['content'], 'SimpleXMLElement', LIBXML_NOCDATA)), true);
       if (($arr['return_code'] == 'SUCCESS') && ($arr['result_code'] == 'SUCCESS')) {
           return ['code'=>'200','msg'=>'退款成功'];

       }
       else {
           if ($arr['return_msg'] == $arr['err_code_des']) {
               $error = $arr['return_msg'];
           }
           else {
               $error =$arr['err_code_des'];
           }

           return ['code'=>'0','msg'=>'退款失败,错误描述:'.$error];
       }

       
       
   }