$merchantId = $config['mch_id'];
        // 从本地文件中加载「商户API私钥」，「商户API私钥」会用来生成请求的签名
        $merchantPrivateKeyFilePath = $config['ssl_key'];
        $merchantPrivateKeyInstance = Rsa::from($merchantPrivateKeyFilePath, Rsa::KEY_TYPE_PRIVATE);
        // 「商户API证书」的「证书序列号」
        $merchantCertificateSerial = $config['merchant_serial_number'];
        // 从本地文件中加载「微信支付平台证书」，用来验证微信支付应答的签名
        $platformCertificateFilePath = $config['ssl_cers'];
        $platformPublicKeyInstance = Rsa::from($platformCertificateFilePath, Rsa::KEY_TYPE_PUBLIC);
        // 从「微信支付平台证书」中获取「证书序列号」
        $platformCertificateSerial = PemUtil::parseCertificateSerialNo($platformCertificateFilePath);
        // 构造一个 APIv3 客户端实例
        $instance = Builder::factory([
            'mchid' => $merchantId,
            'serial' => $merchantCertificateSerial,
            'privateKey' => $merchantPrivateKeyInstance,
            'certs' => [
                $platformCertificateSerial => $platformPublicKeyInstance,
            ],
        ]);
        /*$encryptor = static function(string $msg) use ($platformPublicKeyInstance): string {
            return Rsa::encrypt($msg, $platformPublicKeyInstance);
        };*/
        try {
            $resp = $instance
                ->chain('v3/transfer/batches/out-batch-no/T020220525104305ML0/details/out-detail-no/T020220525104305FRC')
                ->get(['json' => [
                    'out_batch_no'  => 'T020220525104305ML0',
                    'out_detail_no' => 'T020220525104305FRC',
                    ]
                ]);

//            echo $resp->getStatusCode(), PHP_EOL;
            echo $resp->getBody(), PHP_EOL;
        } catch (\Exception $e) {
            // 进行错误处理
//            echo $e->getMessage(), PHP_EOL;
            if ($e instanceof \GuzzleHttp\Exception\RequestException && $e->hasResponse()) {
                $r = $e->getResponse();
//                echo $r->getStatusCode() . ' ' . $r->getReasonPhrase(), PHP_EOL;
                echo $r->getBody(), PHP_EOL, PHP_EOL, PHP_EOL;
            }
//            echo $e->getTraceAsString(), PHP_EOL;
        }



运行返回结果：

{"code":"SIGN_ERROR","detail":{"detail":{"issue":"sign not match"},"field":"signature","location":"authorization","sign_information":{"method":"GET","sign_message_length":152,"truncated_sign_message":"GET\n/v3/transfer/batches/out-batch-no/-t020220525104305-m-l0/details/out-detail-no/-t020220525104305-f-r-c\n1653459825\nbqd0VEpAV4HVV3R8KSZcbpYY5mtY5DwE\n\n","url":"/v3/transfer/batches/out-batch-no/-t020220525104305-m-l0/details/out-detail-no/-t020220525104305-f-r-c"}},"message":"错误的签名，验签失败"}