• php微信普通商户退款


    关于退款有几点说明

    1,退款需要证书 apiclient_cert.pem和apiclient_key.pem证书

    2,数据库需要保存相关微信返回的参数 trade_no 例如是:4200000122201806222222222222

    3,另外就是appid和mch_id一整套。

    下面是相关退款的方法和执行流程

     直接调用  wxRefund() 方法即可,根据返回的退款信息进行下一步操作。

       public function wxRefund()
        {
            $userpayinfo = Db::table('支付工具记录表')->find();
    
         //查询订单表trad_num,主要是用这个字段到支付记录表换取$tradLog记录
            $trad_num = Db::table('订单表')->value('trad_num');
    
            $tradLog = Db::table('交易记录表')->where(['itemid'=>$itemid,'trad_num'=>$trad_num])->field('transaction_id,total_fee')->find();
            $trade_no = $tradLog['transaction_id'];
            $total_fee = $tradLog['total_fee'];
    
            //支付信息
            $appid = $userpayinfo['appid'];
            $mch_id = $userpayinfo['mchid'];
    
            $nonce_str = $this->getNonceStr();
            $op_user_id = $userpayinfo['mchid'];
    
         //随机生成的退款单号
            $out_refund_no = date('Ymd') . str_pad(mt_rand(1, 99999), 5, '0', STR_PAD_LEFT),$transaction_id = $trade_no;
            $refund_fee = $refund_money*100;
            $total_fee = $total_fee*100;
            $key = $userpayinfo['partnerkey'];
            $apiclient_cert = $userpayinfo['certpath'];
            $apiclient_key = $userpayinfo['publicpath'];
            $ref= strtoupper(md5("appid=".$appid."&mch_id=".$mch_id."&nonce_str=".$nonce_str."&op_user_id=".$op_user_id."&out_refund_no=".$out_refund_no."&refund_fee=".$refund_fee."&total_fee=".$total_fee."&transaction_id=".$transaction_id."&key=".$key));//sign加密MD5
            $refund=array(
                'appid'=>$appid,//应用ID,固定
                'mch_id'=>$mch_id,//商户号,固定
                'nonce_str'=>$nonce_str,//随机字符串
                'op_user_id'=>$op_user_id,//操作员
                'out_refund_no'=>$out_refund_no,//商户内部唯一退款单号
                'transaction_id'=>$transaction_id,//微信订单号 微信生成的订单号,在支付通知中有返回
                'refund_fee'=>$refund_fee,//退款金额
                'total_fee'=>$total_fee,//总金额
                'sign'=>$ref//签名
            );
         //微信退款地址,post请求
            $url="https://api.mch.weixin.qq.com/secapi/pay/refund";//微信退款地址,post请求
            $xml=$this->arrayToXml($refund);
            $ch=curl_init();
            curl_setopt($ch,CURLOPT_URL,$url);
            // curl_setopt($ch,CURLOPT_HEADER,1);
            curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
            curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,1);//证书检查
            curl_setopt($ch,CURLOPT_SSLCERTTYPE,'pem');
            curl_setopt($ch,CURLOPT_SSLCERT,getcwd().$apiclient_cert);
            // curl_setopt($ch,CURLOPT_SSLCERT,'/data/wwwroot/项目名/public/upload/certificate/1498007396990/apiclient_cert.pem');
            curl_setopt($ch,CURLOPT_SSLCERTTYPE,'pem');
            curl_setopt($ch,CURLOPT_SSLKEY,getcwd().$apiclient_key);
            // curl_setopt($ch,CURLOPT_SSLKEY,'/data/wwwroot/项目名/public/upload/certificate/1498007396990/apiclient_key.pem');
            curl_setopt($ch,CURLOPT_POST,1);
            curl_setopt($ch,CURLOPT_POSTFIELDS,$xml);
            $data=curl_exec($ch);
            curl_close($ch);
            $return = $this->xmlToArray($data);
            return $return;
        }

     退款方法中需要调用的其他函数

        //生成随机字符串
        public function getNonceStr($length = 16)
        {
            $chars = "abcdefghijklmnopqrstuvwxyz0123456789";
            $str ="";
            for ( $i = 0; $i < $length; $i++ )  {
                $str .= substr($chars, mt_rand(0, strlen($chars)-1), 1);
            }
            return $str;
        }
    
        //数组转为xml格式
        public function arrayToXml($arr)
        {
            $xml = "<xml>";
            foreach ($arr as $key=>$val){
                if(is_array($val)){
                    $xml.="<".$key.">".arrayToXml($val)."</".$key.">";
                }else{
                    $xml.="<".$key.">".$val."</".$key.">";
                }
            }
            $xml.="</xml>";
            return $xml ;
        }
    
        //xml格式转化为数组
        public function xmlToArray($xml)
        {
            libxml_disable_entity_loader(true);
            $xmlstring = simplexml_load_string($xml,'SimpleXMLElement',LIBXML_NOCDATA);
            $val = json_decode(json_encode($xmlstring),true);
            return $val;
        }

    希望大家能用的上,谢谢大家的观看!

  • 相关阅读:
    蛋糕多少钱?
    【FJOI2015】金币换位问题
    撞车
    【BZOJ 1097】旅游景点atr
    codeforces 434D
    codeforces 480D
    bzoj网络流
    bzoj2039
    bzoj1927
    bzoj1070
  • 原文地址:https://www.cnblogs.com/lyzaidxh/p/9970588.html
Copyright © 2020-2023  润新知