PHP 微信支付退款-单文件

<?php
/**
 * 关于微信退款的说明
 * 1.微信退款要求必传证书,需要到https://pay.weixin.qq.com 账户中心->账户设置->API安全->下载证书,证书路径在第119行和122行修改
 * 2.错误码参照 :https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=9_4
 */
header('Content-type:text/html; Charset=utf-8');
$mchid = '';          //微信支付商户号 PartnerID 通过微信支付商户资料审核后邮件发送
$appid = '';  //微信支付申请对应的公众号的APPID
$apiKey = '';   //https://pay.weixin.qq.com 帐户设置-安全设置-API安全-API密钥-设置API密钥
$orderNo = '';                      //商户订单号(商户订单号与微信订单号二选一,至少填一个)
$wxOrderNo = '';                     //微信订单号(商户订单号与微信订单号二选一,至少填一个)
$totalFee = 0.20;                   //订单金额,单位:元
$refundFee = 0.20;                  //退款金额,单位:元
$refundNo = 'refund_'.uniqid();        //退款订单号(可随机生成)
$wxPay = new WxpayService($mchid,$appid,$apiKey);
$result = $wxPay->doRefund($totalFee, $refundFee, $refundNo, $wxOrderNo,$orderNo);
if($result===true){
    echo 'refund success';exit();
}
echo 'refund fail';

class WxpayService
{
    protected $mchid;
    protected $appid;
    protected $apiKey;
    public $data = null;

    public function __construct($mchid, $appid, $key)
    {
        $this->mchid = $mchid; //https://pay.weixin.qq.com 产品中心-开发配置-商户号
        $this->appid = $appid; //微信支付申请对应的公众号的APPID
        $this->apiKey = $key;   //https://pay.weixin.qq.com 帐户设置-安全设置-API安全-API密钥-设置API密钥
    }

    /**
     * 退款
     * @param float $totalFee 订单金额 单位元
     * @param float $refundFee 退款金额 单位元
     * @param string $refundNo 退款单号
     * @param string $wxOrderNo 微信订单号
     * @param string $orderNo 商户订单号
     * @return string
     */
    public function doRefund($totalFee, $refundFee, $refundNo, $wxOrderNo='',$orderNo='')
    {
        $config = array(
            'mch_id' => $this->mchid,
            'appid' => $this->appid,
            'key' => $this->apiKey,
        );
        $unified = array(
            'appid' => $config['appid'],
            'mch_id' => $config['mch_id'],
            'nonce_str' => self::createNonceStr(),
            'total_fee' => floatval($totalFee) * 100,       //订单金额	 单位 转为分
            'refund_fee' => floatval($refundFee) * 100,       //退款金额 单位 转为分
            'sign_type' => 'MD5',           //签名类型 支持HMAC-SHA256和MD5,默认为MD5
            'transaction_id'=>$wxOrderNo,               //微信订单号
            'out_trade_no'=>$orderNo,        //商户订单号
            'out_refund_no'=>$refundNo,        //商户退款单号
            'refund_desc'=>'商品已售完',     //退款原因(选填)
        );
        $unified['sign'] = self::getSign($unified, $config['key']);
        $responseXml = $this->curlPost('https://api.mch.weixin.qq.com/secapi/pay/refund', self::arrayToXml($unified));
        $unifiedOrder = simplexml_load_string($responseXml, 'SimpleXMLElement', LIBXML_NOCDATA);
        if ($unifiedOrder === false) {
            die('parse xml error');
        }
        print_r($unifiedOrder);
        if ($unifiedOrder->return_code != 'SUCCESS') {
            die($unifiedOrder->return_msg);
        }
        if ($unifiedOrder->result_code != 'SUCCESS') {
            die($unifiedOrder->err_code);
        }
        return true;
    }

    public static function curlGet($url = '', $options = array())
    {
        $ch = curl_init($url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_TIMEOUT, 30);
        if (!empty($options)) {
            curl_setopt_array($ch, $options);
        }
        //https请求 不验证证书和host
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
        $data = curl_exec($ch);
        curl_close($ch);
        return $data;
    }

    public function curlPost($url = '', $postData = '', $options = array())
    {
        if (is_array($postData)) {
            $postData = http_build_query($postData);
        }
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);
        curl_setopt($ch, CURLOPT_TIMEOUT, 30); //设置cURL允许执行的最长秒数
        if (!empty($options)) {
            curl_setopt_array($ch, $options);
        }
        //https请求 不验证证书和host
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);

        //第一种方法,cert 与 key 分别属于两个.pem文件
        //默认格式为PEM,可以注释
        curl_setopt($ch,CURLOPT_SSLCERTTYPE,'PEM');
        curl_setopt($ch,CURLOPT_SSLCERT,getcwd().'/apiclient_cert.pem');
        //默认格式为PEM,可以注释
        curl_setopt($ch,CURLOPT_SSLKEYTYPE,'PEM');
        curl_setopt($ch,CURLOPT_SSLKEY,getcwd().'/apiclient_key.pem');
        //第二种方式,两个文件合成一个.pem文件
//        curl_setopt($ch,CURLOPT_SSLCERT,getcwd().'/all.pem');
        $data = curl_exec($ch);
        curl_close($ch);
        return $data;
    }

    public static function createNonceStr($length = 16)
    {
        $chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
        $str = '';
        for ($i = 0; $i < $length; $i++) {
            $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
        }
        return $str;
    }
    public static function arrayToXml($arr)
    {
        $xml = "<xml>";
        foreach ($arr as $key => $val) {
            if (is_numeric($val)) {
                $xml .= "<" . $key . ">" . $val . "</" . $key . ">";
            } else
                $xml .= "<" . $key . "><![CDATA[" . $val . "]]></" . $key . ">";
        }
        $xml .= "</xml>";
        return $xml;
    }

    public static function getSign($params, $key)
    {
        ksort($params, SORT_STRING);
        $unSignParaString = self::formatQueryParaMap($params, false);
        $signStr = strtoupper(md5($unSignParaString . "&key=" . $key));
        return $signStr;
    }
    protected static function formatQueryParaMap($paraMap, $urlEncode = false)
    {
        $buff = "";
        ksort($paraMap);
        foreach ($paraMap as $k => $v) {
            if (null != $v && "null" != $v) {
                if ($urlEncode) {
                    $v = urlencode($v);
                }
                $buff .= $k . "=" . $v . "&";
            }
        }
        $reqPar = '';
        if (strlen($buff) > 0) {
            $reqPar = substr($buff, 0, strlen($buff) - 1);
        }
        return $reqPar;
    }
}
?>

PHP 微信支付退款-单文件

PHP 日志类

<?php


class Libs_Log_Logger {

    const TRANSFER_ERROR    = 'LOG转换失败,非LOG信息';
    const LOG_FILENAME      = 'output.log';

    /**
     * 本函数用于取代系统的error_log错误日志记录函数
     * @param string|array|object|bool|int $log 需要记录的错误信息,可以是格式良好的任意类型
     * @param string $filename 保存日志信息的文件名,默认存储路径为sites/app/storage/log/output.log
     * @param bool $append 是否以追加的形式添加日志信息,默认追加
     */
    public static function outputLog($log, $filename = self::LOG_FILENAME, $append = true) {
        if (!plum_setmod_dir(PLUM_APP_LOG)) {
            return;
        }
        $filename = PLUM_APP_LOG . '/' . $filename;
        $mode = $append ? 'a' : 'w';
        if (!($handler = @fopen($filename, $mode))) {
            //文件流打开失败时触发错误,并退出
            trigger_error('LOG日志文件打开失败', E_USER_WARNING);
            return;
        }
        //获取调用跟踪
        $trace  = debug_backtrace(DEBUG_BACKTRACE_PROVIDE_OBJECT, 1);
        $debug  = self::log_format(array('file' => $trace[0]['file'], 'line' => $trace[0]['line']));

        $info = self::log_format($log);
        //开始写入
        if (($write_byte = fwrite($handler, $debug.$info)) === false) {
            $error_msg = 'LOG日志写入失败';
            //检查磁盘空间
            $free_space = disk_free_space(PLUM_APP_LOG);
            //磁盘空间不足
            if ($free_space && $write_byte > $free_space) {
                $error_msg .= '磁盘空间不足';
            }
            //写入失败时,触发错误并退出
            trigger_error($error_msg, E_USER_WARNING);
            fclose($handler);
            return;
        }
        //关闭文件流
        fclose($handler);
    }

    /**
     * 输出信息到控制台
     */
    public static function outputConsoleLog($log) {
        //非控制台调用直接退出
        if (php_sapi_name() != 'cli') {
            //die('请在控制台下执行脚本');
            return;
        }
        $info = self::log_format($log);
        fwrite(STDOUT, $info);
    }

    /**
     * 返回格式化的LOG日志信息
     * @param $log
     * @return string
     */
    private static function log_format($log) {
        $log_type = 'Unknown';
        if (is_array($log)) {
            //数组进行json序列化
            $log_type   = 'Array';
            $loginfo    = self::json_encode_helper($log);
        } else if (is_object($log)) {
            $log_type   = 'Object';
            $loginfo    = self::json_encode_helper($log);
        } else if (is_string($log)) {
            $log_type   = 'String';
            $loginfo    = $log;
        } else if (is_bool($log)) {
            $log_type   = 'Bool';
            $loginfo    = $log ? 'true' : 'false';
        } else if (is_numeric($log)) {
            $log_type   = 'Number';
            $loginfo    = strval($log);
        } else if (is_null($log)) {
            $log_type   = 'Null';
            $loginfo    = 'null';
        } else {
            $loginfo = strval($log);
        }
        //再一次判断,排查转换出错的情况
        if (!is_string($loginfo)) {
            $errno  = json_last_error();
            switch ($errno) {
                default :
                    $loginfo = self::TRANSFER_ERROR.";错误号:{$errno};错误信息:".json_last_error_msg();
                    break;
            }

        }
        //添加换行符
        $loginfo .= "\n";

        $format = "[".date('Y/m/d H:i:s', time())."] $log_type: $loginfo";

        return $format;
    }
    /*
     * utf8格式转换
     */
    private static function utf8ize( $mixed ) {
        if (is_array($mixed)) {
            foreach ($mixed as $key => $value) {
                $mixed[$key] = self::utf8ize($value);
            }
        } elseif (is_string($mixed)) {
            //$mixed = mb_convert_encoding($mixed, "UTF-8", "UTF-8");
            $mixed  = utf8_encode($mixed);
        } elseif (is_object($mixed)) {
            foreach ($mixed as $key => $value) {
                $mixed->$key = self::utf8ize($value);
            }
        }
        return $mixed;
    }

    private static function json_encode_helper($var) {
        switch (gettype($var)) {
            case 'boolean':
                return $var ? 'true' : 'false'; // Lowercase necessary!

            case 'integer':
            case 'double':
                return $var;

            case 'resource':
            case 'string':
                // Always use Unicode escape sequences (\u0022) over JSON escape
                // sequences (\") to prevent browsers interpreting these as
                // special characters.
                $replace_pairs = array(
                    // ", \ and U+0000 - U+001F must be escaped according to RFC 4627.
                    '\\' => '\u005C',
                    '"' => '\u0022',
                    "\x00" => '\u0000',
                    "\x01" => '\u0001',
                    "\x02" => '\u0002',
                    "\x03" => '\u0003',
                    "\x04" => '\u0004',
                    "\x05" => '\u0005',
                    "\x06" => '\u0006',
                    "\x07" => '\u0007',
                    "\x08" => '\u0008',
                    "\x09" => '\u0009',
                    "\x0a" => '\u000A',
                    "\x0b" => '\u000B',
                    "\x0c" => '\u000C',
                    "\x0d" => '\u000D',
                    "\x0e" => '\u000E',
                    "\x0f" => '\u000F',
                    "\x10" => '\u0010',
                    "\x11" => '\u0011',
                    "\x12" => '\u0012',
                    "\x13" => '\u0013',
                    "\x14" => '\u0014',
                    "\x15" => '\u0015',
                    "\x16" => '\u0016',
                    "\x17" => '\u0017',
                    "\x18" => '\u0018',
                    "\x19" => '\u0019',
                    "\x1a" => '\u001A',
                    "\x1b" => '\u001B',
                    "\x1c" => '\u001C',
                    "\x1d" => '\u001D',
                    "\x1e" => '\u001E',
                    "\x1f" => '\u001F',
                    // Prevent browsers from interpreting these as as special.
                    "'" => '\u0027',
                    '<' => '\u003C',
                    '>' => '\u003E',
                    '&' => '\u0026',
                    // Prevent browsers from interpreting the solidus as special and
                    // non-compliant JSON parsers from interpreting // as a comment.
                    //'/' => '\u002F',
                    // While these are allowed unescaped according to ECMA-262, section
                    // 15.12.2, they cause problems in some JSON parsers.
                    "\xe2\x80\xa8" => '\u2028', // U+2028, Line Separator.
                    "\xe2\x80\xa9" => '\u2029', // U+2029, Paragraph Separator.
                );

                return '"' . strtr($var, $replace_pairs) . '"';

            case 'array':
                // Arrays in JSON can't be associative. If the array is empty or if it
                // has sequential whole number keys starting with 0, it's not associative
                // so we can go ahead and convert it as an array.
                if (empty($var) || array_keys($var) === range(0, sizeof($var) - 1)) {
                    $output = array();
                    foreach ($var as $v) {
                        $output[] = self::json_encode_helper($v);
                    }
                    return '[ ' . implode(', ', $output) . ' ]';
                }
            // Otherwise, fall through to convert the array as an object.

            case 'object':
                $output = array();
                foreach ($var as $k => $v) {
                    $output[] = self::json_encode_helper(strval($k)) . ':' . self::json_encode_helper($v);
                }
                return '{' . implode(', ', $output) . '}';

            default:
                return 'null';
        }
    }
}

PHP 日志类

PHP 微信支付-商家转账到零钱-单文件版

<?php

class App_Helper_WxTransfer
{

    const AUTH_TAG_LENGTH_BYTE = 16;

    /**
     * @notes 商家转账到零钱
     * @param $batch_no //提现订单号
     * @param $left_money //提现金额 单位 元
     * @param $user_openid //用户openID
     * @param $withdraw_name //提现金额大于200,用户真实名字必填
     * @return bool
     * @throws \Exception
     * @author ljj
     * @date 2022/9/27 4:40 下午
     */
    public static function transfer($appid,$mchid,$cert_client,$cert_key,$v3key,$batch_no, $left_money, $user_openid, $withdraw_name = '',$b_name,$b_remark,$t_remark)
    {
        $config = [
            'app_id' => $appid,
            'mch_id' => $mchid, //商户ID
            'cert_client' => getcwd().$cert_client, //cert证书地址//绝对路径
            'cert_key' => getcwd().$cert_key, //key支付证书绝对地址
        ];

        //获取微信支付平台证书序列号(不是API证书序列号)
        $url = 'https://api.mch.weixin.qq.com/v3/certificates';
        $wx_cert = json_decode(self::https_request_without_wechatpay_serial($url, self::token($url, 'GET', array(), $config)),true);
        //设置加密密钥v3 6efd7276408a3334c7fa3e740c3ec964
        $associated_data = $wx_cert['data'][0]['encrypt_certificate']['associated_data'];
        $nonce = $wx_cert['data'][0]['encrypt_certificate']['nonce'];
        $ciphertext = $wx_cert['data'][0]['encrypt_certificate']['ciphertext'];
        $wx_cert_public_key = self::decryptToString($v3key, $associated_data, $nonce, $ciphertext);
        $wx_cert_sn = $wx_cert['data'][0]['serial_no'];
//        Libs_Log_Logger::outputLog($wx_cert,"wx_transfer1");

        //请求URL
        $url = 'https://api.mch.weixin.qq.com/v3/transfer/batches';
        //请求方式
        $http_method = 'POST';
        //请求参数
        $data = [
            'appid' => $config['app_id'], //申请商户号的appid或商户号绑定的appid(企业号corpid即为此appid)
            'out_batch_no' => $batch_no, //商户系统内部的商家批次单号,要求此参数只能由数字、大小写字母组成,在商户系统内部唯一
            'batch_name' => $b_name, //该笔批量转账的名称
            'batch_remark' => $b_remark, //转账说明,UTF8编码,最多允许32个字符
            'total_amount' => $left_money * 100, //转账金额单位为“分”。转账总金额必须与批次内所有明细转账金额之和保持一致,否则无法发起转账操作
            'total_num' => 1, //一个转账批次单最多发起三千笔转账。转账总笔数必须与批次内所有明细之和保持一致,否则无法发起转账操作
            'transfer_detail_list' => [
                [ //发起批量转账的明细列表,最多三千笔
                    'out_detail_no' => $batch_no, //商户系统内部区分转账批次单下不同转账明细单的唯一标识,要求此参数只能由数字、大小写字母组成
                    'transfer_amount' => $left_money * 100, //转账金额单位为分
                    'transfer_remark' => $t_remark, //单条转账备注(微信用户会收到该备注),UTF8编码,最多允许32个字符
                    'openid' => $user_openid, //openid是微信用户在公众号appid下的唯一用户标识(appid不同,则获取到的openid就不同),可用于永久标记一个用户
                ]
            ]
        ];
        $data['transfer_detail_list'][0]['user_name'] = self::getEncrypt($withdraw_name, $wx_cert_public_key);
        $token = self::token($url, $http_method, $data, $config);
        //获取token
        $result = self::https_request($url, json_encode($data), $token, $wx_cert_sn);
        //发送请求
        $result_arr = json_decode($result, true);
        if (!isset($result_arr['create_time'])) {
            //批次受理失败
            Libs_Log_Logger::outputLog($result_arr,"wx_transfer");
        }
        //      成功返回信息  {"batch_id":"1030001036201351072852022101201442513049","create_time":"2022-10-12T22:08:21+08:00","out_batch_no":"20221011004103000000146822"}
        //批次受理成功,更新提现申请单为提现中状态
        //业务修改为提现中
        return json_encode($result_arr);
    }

    /**
     * @notes 签名生成
     * @param $url
     * @param $http_method
     * @param $data
     * @param $config
     * @return string
     * @author ljj
     * @date 2022/9/27 4:14 下午
     */
    public static function token($url, $http_method, $data, $config)
    {
        $timestamp = time();
        //请求时间戳
        $url_parts = parse_url($url);
        //获取请求的绝对URL
        $nonce = $timestamp . rand('10000', '99999');
        //请求随机串
        $body = empty($data) ? '' : json_encode((object)$data);
        //请求报文主体
        $stream_opts = [
            "ssl" => [
                "verify_peer" => false,
                "verify_peer_name" => false,
            ]
        ];
        $apiclient_cert_arr = openssl_x509_parse(file_get_contents($config['cert_client'], false, stream_context_create($stream_opts)));
        $serial_no = $apiclient_cert_arr['serialNumberHex'];
        //Libs_Log_Logger::outputLog($serial_no,"wx_transfer");
        //证书序列号
        $mch_private_key = file_get_contents($config['cert_key'], false, stream_context_create($stream_opts));
        //密钥
        $merchant_id = $config['mch_id'];
        //商户id
        $canonical_url = ($url_parts['path'] . (!empty($url_parts['query']) ? "?${url_parts['query']}" : ""));
        $message = $http_method . "\n" .
            $canonical_url . "\n" .
            $timestamp . "\n" .
            $nonce . "\n" .
            $body . "\n";
        openssl_sign($message, $raw_sign, $mch_private_key, 'sha256WithRSAEncryption');
        $sign = base64_encode($raw_sign);
        //签名
        $schema = 'WECHATPAY2-SHA256-RSA2048';
        $token = sprintf(
            'mchid="%s",nonce_str="%s",timestamp="%d",serial_no="%s",signature="%s"',
            $merchant_id,
            $nonce,
            $timestamp,
            $serial_no,
            $sign
        );
        //微信返回token
        return $schema . ' ' . $token;
    }

    /**
     * @notes 发送请求
     * @param $url
     * @param $data
     * @param $token
     * @return bool|string
     * @author ljj
     * @date 2022/9/27 4:15 下午
     */
    public static function https_request($url, $data, $token, $wechatpay_serial)
    {
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_URL, (string)$url);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
        if (!empty($data)) {
            curl_setopt($curl, CURLOPT_POST, 1);
            curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
        }
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        //添加请求头
        $headers = [
            'Authorization:' . $token,
            'Accept: application/json',
            'Content-Type: application/json; charset=utf-8',
            'User-Agent:Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36',
            'Wechatpay-Serial:'.$wechatpay_serial,
        ];
        if (!empty($headers)) {
            curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
        }
        $output = curl_exec($curl);
        curl_close($curl);
        return $output;
    }

    /**
     * @notes 发送请求
     * @param $url
     * @param $data
     * @param $token
     * @return bool|string
     * @author ljj
     * @date 2022/9/27 4:15 下午
     */
    public static function https_request_without_wechatpay_serial($url, $token)
    {
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_URL, (string)$url);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        //添加请求头
        $headers = [
            'Authorization:' . $token,
            'Accept: application/json',
            'Content-Type: application/json; charset=utf-8',
            'User-Agent:Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36',
        ];
        if (!empty($headers)) {
            curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
        }
        $output = curl_exec($curl);
        curl_close($curl);
        return $output;
    }

    /**
     * @notes 敏感信息加解密
     * @param $str
     * @param $config
     * @return string
     * @throws \Exception
     * @author ljj
     * @date 2022/9/27 3:53 下午
     */
    public static function getEncrypt($str, $public_key)
    {
        //$str是待加密字符串
        $encrypted = '';
        if (openssl_public_encrypt($str, $encrypted, $public_key, OPENSSL_PKCS1_OAEP_PADDING)) {
            //base64编码
            $sign = base64_encode($encrypted);
        } else {
            //Libs_Log_Logger::outputLog($result_arr,"wx_transfer");
            throw new \Exception('encrypt failed');
        }
        return $sign;
    }

    public static function decryptToString($aesKey, $associatedData, $nonceStr, $ciphertext)
    {
        $ciphertext = \base64_decode($ciphertext);
        if (strlen($ciphertext) <= self::AUTH_TAG_LENGTH_BYTE) {
            return false;
        }

        // ext-sodium (default installed on >= PHP 7.2)
        if (function_exists('\sodium_crypto_aead_aes256gcm_is_available') && \sodium_crypto_aead_aes256gcm_is_available()) {
            return \sodium_crypto_aead_aes256gcm_decrypt($ciphertext, $associatedData, $nonceStr, $aesKey);
        }

        // ext-libsodium (need install libsodium-php 1.x via pecl)
        if (function_exists('\Sodium\crypto_aead_aes256gcm_is_available') && \Sodium\crypto_aead_aes256gcm_is_available()) {
            return \Sodium\crypto_aead_aes256gcm_decrypt($ciphertext, $associatedData, $nonceStr, $aesKey);
        }

        // openssl (PHP >= 7.1 support AEAD)
        if (PHP_VERSION_ID >= 70100 && in_array('aes-256-gcm', \openssl_get_cipher_methods())) {
            $ctext = substr($ciphertext, 0, -self::AUTH_TAG_LENGTH_BYTE);
            $authTag = substr($ciphertext, -self::AUTH_TAG_LENGTH_BYTE);

            return \openssl_decrypt($ctext, 'aes-256-gcm', $aesKey, \OPENSSL_RAW_DATA, $nonceStr,
                $authTag, $associatedData);
        }

        throw new \RuntimeException('AEAD_AES_256_GCM需要PHP 7.1以上或者安装libsodium-php');
    }

    /**
     * @notes 商家明细单号查询明细单API
     * @param $withdrawApply
     * @param $config
     * @return mixed
     * @author ljj
     * @date 2022/9/27 5:54 下午
     */
     public static function details($appid,$mchid,$cert_client,$cert_key,$outbatchno,$outdetailno)
     {
         $config = [
             'app_id' => $appid,
             'mch_id' => $mchid, //商户ID
             'cert_client' => getcwd().$cert_client, //cert证书地址//绝对路径
             'cert_key' => getcwd().$cert_key, //key支付证书绝对地址
         ];
         //请求URL
         $url = 'https://api.mch.weixin.qq.com/v3/transfer/batches/out-batch-no/' . $outbatchno . '/details/out-detail-no/' . $outdetailno;
         //请求方式
         $http_method = 'GET';
         //请求参数
         $data = [];
         $token = self::token($url, $http_method, $data, $config);
         //获取token
         $result = self::https_request($url, $data, $token);
         //发送请求
         $result_arr = json_decode($result, true);
         return $result_arr;
     }
}

PHP 微信支付-商家转账到零钱-单文件版

Java Unicode类

public class UnicodeUtil {
	//字符串转换unicode
    public static String stringToUnicode(String string) {
        StringBuffer unicode = new StringBuffer();
        for (int i = 0; i < string.length(); i++) {
            char c = string.charAt(i);  // 取出每一个字符
            unicode.append("\\u" +Integer.toHexString(c));// 转换为unicode
        }
        return unicode.toString();
    }

    //unicode 转字符串
    public static String unicodeToString(String unicode) {
        StringBuffer string = new StringBuffer();
        String[] hex = unicode.split("\\\\u");
        for (int i = 1; i < hex.length; i++) {
            int data = Integer.parseInt(hex[i], 16);// 转换出每一个代码点
            string.append((char) data);// 追加成string
        }
        return string.toString();
    }
}

Java Unicode类