PHP7 微信预支付+红包+企业转账到零钱+退款+退款通知内容解密

约定不等于承诺〃 2022-05-23 00:04 240阅读 0赞

每次写微信支付新的内容都要找一些文档，有点烦了，就干脆发一波代码好了，懒得用微信的sdk，就是这么懒，看都没看过

注意，代码使用laravel框架写的，不影响使用，加入你的namespace，替换成你的Exception，配置好你的微信支付参数，相关的信息改写成你需要的，基本就能直接上手使用了

class WeChatPayService

function

1 qrCodePay 生成支付二维码

2 transferIntoWallet 向个人微信钱包转账（企业转账到钱包）

3 sendBasicRedPack 公众号发送微信红包

4 generateSign 参数签名

5 convertArrayToXml 数组参数转为xml参数

6 preOrder 微信预支付（统一下单）

7 refund 订单退款

8 xmlStructureToArray 微信返回的xml结构化为key->value的数组

9 decodeRefundNotifyInfo 解析微信通知的加密内容，返回数组（解密AES的应该用openssl方法）

仅供参考，请勿用于业务开发，出了问题我不负责的昂==

class WeChatPayService
    {
        private static $instance;
        private $conf;
        //统一下单API
        const PreOrder = 'https://api.mch.weixin.qq.com/pay/unifiedorder';
        //普通红包
        const BasicRedPack = 'https://api.mch.weixin.qq.com/mmpaymkttransfers/sendredpack';
        //企业转账到零钱
        const Transfer = 'https://api.mch.weixin.qq.com/mmpaymkttransfers/promotion/transfers';
        //订单退款
        const Refund = 'https://api.mch.weixin.qq.com/secapi/pay/refund';
    
        private function __construct(){
            $this->conf = Config::get('eqy.WeChatPay');
        }
    
        private function __clone(){}
    
        public static function getInstance()
        {
            if(!(self::$instance instanceof  self))
                self::$instance = new self();
    
            return self::$instance;
        }
    
    
    
        /**生成二维码支付 二维码30分钟有效
         * @param $price int 订单价格
         * @param $order_no string 商家订单编号
         * @return array  [prepay_id,qr_code_url]
         * @throws SystemInternalError
         */
        public function qrCodePay($price,$order_no){
            $result = $this->preOrder($price,$order_no,'NATIVE');
            $xml_paser = xml_parser_create();
            xml_parse_into_struct($xml_paser,$result,$re);
            $prepay_id = $re[17]['value'];
            $url = $re[21]['value'];
            return [$prepay_id,$url];
        }
    
    
        /**企业直接转账到微信零钱
         * @param $order_no
         * @param int $amount
         * @param string $dest_open_id
         * @param bool $check_name
         * @param null $name
         * @param string $desc
         * @throws SystemInternalError
         */
        public function transferIntoWallet($order_no,$amount=500,$dest_open_id='obuxnxAIYyzLDwZ8_7yJo4kXRO-I',$check_name=false,$name=null,$desc='e企印首单返现')
        {
            $data = [
                'mch_appid'=>$this->conf['AppId'],
                'mchid'=>$this->conf['MchId'],
                'nonce_str'=>str_random(24),
                'partner_trade_no'=>$order_no,
                'openid'=>$dest_open_id,
                'amount'=>$amount,
                'desc'=>$desc,
                'spbill_create_ip'=>$this->conf['ServerIp']
            ];
    
            if($check_name)
            {
                $data['check_name'] = 'FORCE_CHECK';
                $data['re_user_name'] = $name;
            }else
                $data['check_name'] = 'NO_CHECK';
    
            $this->generateSign($data);
            $data = $this->convertArrayToXml($data);
    
            $re = CurlService::getInstance()->post(self::Transfer,$data,null,false,
                $this->conf['CertPath'],$this->conf['PKeyPath']);
    
            if($re)
            {
    
                $arr = $this->xmlStructureToArray($re);
                if($arr['return_code']=='SUCCESS') {
                    if ($arr['result_code'] != 'SUCCESS')
                        throw new SystemInternalError('basic red pack send failed! open_id=' . $dest_open_id);
                }
                else
                    throw new SystemInternalError("basic red pack api failed！" . json_encode($arr));
    
    
    
            }
    
        }
    
        /**公众号发送微信红包
         * @param $order_no
         * @param $dest_open_id
         * @param int $red_pack_amount
         * @param string $name
         * @param string $wishing
         * @param string $act_name
         * @param string $remark
         * @return mixed
         * @throws \Exception
         */
        public function sendBasicRedPack($order_no,$dest_open_id='obuxnxAIYyzLDwZ8_7yJo4kXRO-I',
     $red_pack_amount=300,$name='e企印',$wishing='图文服务，使命必达！',$act_name='e企印首单返现',$remark='首单返现')
        {
    
            $data = [
                'mch_billno'=>$order_no,
                'nonce_str'=>str_random(24),
                'mch_id'=>$this->conf['MchId'],
                'wxappid'=>$this->conf['AppId'],
                'send_name'=>$name,
                're_openid'=>$dest_open_id,
                'total_amount'=>$red_pack_amount,
                'total_num'=>1,
                'wishing'=>$wishing,
                'client_ip'=>$this->conf['ServerIp'],
                'act_name'=>$act_name,
                'remark'=>$remark
            ];
            $this->generateSign($data);
            $data = $this->convertArrayToXml($data);
    
            $re = CurlService::getInstance()->post(self::BasicRedPack,$data,null,false,
                $this->conf['CertPath'],$this->conf['PKeyPath']);
    
    
            if($re) {
                //<![CDATA[SUCCESS]]></return_code>
                //<return_msg><![CDATA[支付失败]]></return_msg>
                //<mch_appid><![CDATA[wx03ebc57fe2b79218]]></mch_appid>
                //<mchid><![CDATA[1354162102]]></mchid>
                //<result_code><![CDATA[FAIL]]></result_code>
                //<err_code><![CDATA[NOTENOUGH]]></err_code>
                //<err_code_des><![CDATA[余额不足]]></err_code_des>
                //</xml>
    //            $xml_parser = xml_parser_create();
    //            xml_parse_into_struct($xml_parser, $re, $arr);
    
    
                $arr = $this->xmlStructureToArray($re);
                if($arr['return_code']=='SUCCESS') {
                    if ($arr['result_code'] != 'SUCCESS')
                        throw new SystemInternalError('basic red pack send failed! open_id=' . $dest_open_id);
                }else
                    throw new SystemInternalError("basic red pack api failed！" . json_encode($arr));
    
    
            }
    
    
        }
    
        /**参数签名
         * @param $data
         */
        private function generateSign(&$data)
        {
            ksort($data);//参数按照ASCII有小到大排序
            $stringA = '';
            //生成stringA
            $length = count($data);
            $i = 0;
            foreach($data as $k=>$v)
            {
                $i++;
                $stringA.=$k.'='.$v;
                if($i != $length)
                {
                    $stringA.='&';
                }
            }
    
            $stringSignTemp = $stringA.'&key='.$this->conf['Key'];
            $data['sign'] = strtoupper(md5($stringSignTemp));
        }
    
        /**将array转变为xml
         * @param $data
         * @return string
         */
        private function convertArrayToXml($data)
        {
            if(empty($data)) return 'error';
            $xml = '<xml>'."\n";
            foreach($data as $k=>$v)
            {
                $xml.='<'.$k.'>'.$v.'</'.$k.'>'."\n";
            }
            $xml.='</xml>';
            return $xml;
        }
    
    
        /**生成微信的预支付订单
         * @param $price int 订单金额，单位分
         * @param $order_no  string 商家自定义的订单编号
         * @param string $trade_type string JSAPI 公众号支付 NATIVE 扫码支付 APP APP支付
         * @return mixed
         * @throws SystemInternalError
         */
        private function preOrder($price,$order_no,$trade_type='NATIVE')
        {
            $time = time();
            $data = [
                'appid'=>$this->conf['AppId'],
                'mch_id'=>$this->conf['MchId'],
                'nonce_str'=>str_random(18),
                'detail'=>'e企印用户支付('.($price/100).'元)',
                'attach'=>'杭州牛印科技有限公司',
                'device_info'=>'WEB',
                'body'=>'e企印',
                'total_fee'=>$price,
                'fee_type'=>'CNY',
                'time_start'=>date('YmdHis',$time),
                'time_expire'=>date('YmdHis',$time+600),
                'trade_type'=>$trade_type,
                'out_trade_no'=>$order_no,
                'notify_url'=>HOST.$this->conf['NotifyUrl']
            ];
            $this->generateSign($data);
            $data = $this->convertArrayToXml($data);
    
            $result = CurlService::getInstance()->post(self::PreOrder,$data);
    
            if(empty($result)) throw new SystemInternalError('wechat preorder failed!');
    
            return $result;
    
        }
    
    
        /**微信订单退款
         * @param $order_no
         * @param $refund_fee
         * @param $total_fee
         * @return array
         * @throws SystemInternalError
         * https://pay.weixin.qq.com/wiki/doc/api/native.php?chapter=9_4
         */
        public function refund($order_no,$refund_fee,$total_fee)
        {
            $data = [
                'appid'=>$this->conf['AppId'],
                'mch_id'=>$this->conf['MchId'],
                'nonce_str'=>str_random(18),
                'sign_type'=>'MD5',
                'out_trade_no'=>$order_no,
                'out_refund_no'=>str_random(18),
                'total_fee'=>$total_fee,
                'refund_fee'=>$refund_fee,
                'refund_fee_type'=>'CNY',
                'refund_desc'=>'订单退款,标号:'.$order_no,
                'notify_url'=>HOST.$this->conf['RefundNotifyUrl']
            ];
    
            $this->generateSign($data);
            $data = $this->convertArrayToXml($data);
    
            $re = CurlService::getInstance()->post(self::Refund,$data,null,false,$this->conf['CertPath'],$this->conf['PKeyPath']);
    
            if(empty($re)) throw new SystemInternalError('wechat refund failed!');
    
            $arr = $this->xmlStructureToArray($re);
            if($arr['return_code']=='SUCCESS' || $arr['result_code'] == 'SUCCESS')
                return [true,'success'];
            else {
                return [false,$arr['err_code']];
            }
    
        }
    
    
        /**针对微信返回的xml参数，结构化为操作便利的数组
         * @param $xml
         * @return array
         */
        public function xmlStructureToArray($xml)
        {
            $parser = xml_parser_create();
            xml_parse_into_struct($parser,$xml,$arr);
    
            $data = [];
            foreach ($arr as $item)
            {
                if($item['tag']!='XML')
                    $data[strtolower($item['tag'])] = $item['value'];
            }
    
            unset($arr,$xml,$parser);
            return $data;
        }
    
    
        /**解析微信退款内容  AES-256-ECB  PKCS7Padding
         * @param $info
         * @return array
         * @throws SystemInternalError
         */
        public function decodeRefundNotifyInfo($info)
        {
            $data = base64_decode($info);
            $key = strtolower(md5($this->conf['Key']));
            $re = openssl_decrypt($data,'AES-256-ECB',$key,OPENSSL_NO_PADDING);
            if($re == false)
                throw new SystemInternalError('info decryption failed!');
    
            $len = strlen($re);
            $pad = ord($re[$len - 1]);
            if ($pad < 1 || $pad > 32)
                $pad = 0;
            $xml = substr($re, 0, $len - $pad);
    
            return $this->xmlStructureToArray($xml);
        }
    
    
    
    
    }

附CurlService（网络请求）

class CurlService{
    
        private static $instance;
    
        private function __construct(){}
    
        private function __clone(){}
    
        public static function getInstance()
        {
            if(!(self::$instance instanceof  self))
                self::$instance = new self();
            return self::$instance;
        }
    
    
        /** post方法
         * @param $url string 目标api地址
         * @param $data  array|json string 参数
         * @param null $header array http请求头
         * @param bool $is_debug bool 调试模式
         * @param null $cert_path string 证书路径
         * @param null $pkey_path string 私钥路径
         * @param null $ca_path string 根证书路径
         * @return mixed
         * @throws SystemInternalError
         */
        public function post($url,$data,$header=null,$is_debug=false,$cert_path=null,$pkey_path=null,$ca_path=null)
        {
            $ch = curl_init();
            curl_setopt($ch,CURLOPT_RETURNTRANSFER,true);
            if($header)
                curl_setopt($ch,CURLOPT_HTTPHEADER,$header);
            curl_setopt($ch,CURLOPT_POST,true);
            curl_setopt($ch,CURLOPT_POSTFIELDS,$data);
            curl_setopt($ch,CURLOPT_URL,$url);
            curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,false);
            curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,false);
            if($cert_path && $pkey_path)
            {
                curl_setopt($ch,CURLOPT_SSLCERTTYPE,'PEM');
                curl_setopt($ch,CURLOPT_SSLCERT,$cert_path);
                curl_setopt($ch,CURLOPT_SSLKEYTYPE,'PEM');
                curl_setopt($ch,CURLOPT_SSLKEY,$pkey_path);
            }
            if($ca_path) {
                curl_setopt($ch, CURLOPT_CAINFO, 'PEM');
                curl_setopt($ch, CURLOPT_CAPATH, $ca_path);
            }
    
            $re = curl_exec($ch);
            if($is_debug)
                return $re;
    
            $code = curl_getinfo($ch,CURLINFO_HTTP_CODE);
            if($code != 200)
                throw new SystemInternalError('curl function failed! http code:'.$code);
    
            return $re;
        }
    
    
        /** get方法
         * @param $url string 目标api地址
         * @param null $data array 数组参数
         * @param null $header array 请求头
         * @param bool $is_debug bool  调试模式
         * @return mixed
         * @throws SystemInternalError
         */
        public function get($url,$data=null,$header=null,$is_debug=false)
        {
    
            if(is_array($data))
            {
                $url .= '?';
                $size = count($data);
    
                $index = 1;
                foreach ($data as $k=>$v)
                {
                    $url .= $k.'='.$v;
                    if($index != $size)
                        $url .= '&';
                    $index ++;
                }
            }
    
            $ch = curl_init();
            curl_setopt($ch,CURLOPT_RETURNTRANSFER,true);
            if($header)
                curl_setopt($ch,CURLOPT_HTTPHEADER,$header);
            curl_setopt($ch,CURLOPT_URL,$url);
            curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,false);
            curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,false);
            $re = curl_exec($ch);
            if($is_debug)
                return $re;
    
            $code = curl_getinfo($ch,CURLINFO_HTTP_CODE);
            if($code != 200)
                throw new SystemInternalError('curl function failed! http code:'.$code);
    
            return $re;
        }

配置文件截图如下（laravel框架下）

![20180529165116487][]

[20180529165116487]: /images/20220523/1f6b112b7b7b44228dd3645036a750b3.png