微信订单退款接口

短命女 2023-03-05 12:36 14阅读 0赞

//退款
        public static function tui($transaction_id,$tui_no,$order_money,$money){ 
            $param = [
                'appid' => Config::get('app.appid'),
                'mch_id' => Config::get('app.mch_id'), //商户id
                'nonce_str' => self::getRand(20, true), //随机字符串
                'transaction_id'=>$transaction_id, //微信订单号
                'out_refund_no' => $tui_no, //退款商家订单号
                'total_fee' => $order_money * 100, //订单金额
                'refund_fee' => $money * 100, //退款金额
                'notify_url' => Config::get('app.url').'/api/pay/quxiaosuccess'
            ];
            $sign = self::makeSign($param, Config::get('app.mch_key'));
            $param['sign'] = $sign;
    
            try { 
                //将数组转换成xml数据
                $xml = self::ToXmls($param);
            } catch (\Exception $e) { 
                return $e->getMessage();
            }
            $url = "https://api.mch.weixin.qq.com/secapi/pay/refund";
            //请求微信支付接口
            $getXml = self::curl_posts($url, $xml);
    
            //将微信返回值转换成数组
            $getArr = self::FromXmls($getXml);
            if ($getArr[1]['return_code'] == 'SUCCESS' && $getArr[1]['result_code'] == 'SUCCESS') { 
                //请求成功
                $data['code'] = 'success';
            } else if ($getArr['return_code'] == 'SUCCESS' && $getArr['result_code'] == 'FAIL') { 
                $data['code'] = $getArr['err_code'];
                $data['msg'] = $getArr['err_code_des'];
            } else { 
                $data['code'] = $getArr['return_code'];
                $data['msg'] = $getArr['return_msg'];
            }
            return $data;
        }
    //获取随机字符串
        public static function getRand($length = 6, $isAll = false)
        { 
    
            if ($isAll) { 
                $chars = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
            } else { 
                $chars = '0123456789';
            }
            $randStr = '';
            for ($i = 0; $i < $length; $i++) { 
                $randStr .= $chars[mt_rand(0, strlen($chars) - 1)];
            }
            return $randStr;
        }
     //生成签名
        public static function makeSign($param, $key)
        { 
            ksort($param);
            $string = self::toUrlParams($param);
            $string = $string . '&key=' . $key;
            $string = md5($string);
            $result = strtoupper($string);
            return $result;
        }
        //将数组转换成xml数据
        public static function ToXmls($data)
        { 
            if (!is_array($data)
                || count($data) <= 0) { 
                throw new Exception("数组数据异常！");
            }
            $xml = "<xml>";
            foreach ($data as $key => $val) { 
                $xml .= "<" . $key . ">" . $val . "</" . $key . ">";
            }
            $xml .= "</xml>";
            return $xml;
        }
        private function curl_posts($url,$post_data)
        { 
            if (is_array($post_data)) { 
                $postData = http_build_query($post_data);
            }
            $ch = curl_init();
            curl_setopt($ch, CURLOPT_URL, $url);
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
            curl_setopt($ch, CURLOPT_POST, 1);
            curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
            curl_setopt($ch, CURLOPT_TIMEOUT, 30);
            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
            curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
            curl_setopt($ch,CURLOPT_SSLCERT, public_path().Config::get('app.cert'));
            curl_setopt($ch,CURLOPT_SSLKEY,public_path().Config::get('app.key')); //注意证书路径一定是绝对路径或相对路径，我搞成链接了，坑了我好长时间
            $data = curl_exec($ch);
            curl_close($ch);
            return $data;
        }
        //将xml转换成数组
        public static function FromXmls($xml)
        { 
            if (!$xml) { 
                return ['false', 'xml数据异常！'];
            }
            libxml_disable_entity_loader(true);
            $data = json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);
            return ['true', $data];
        }