PHP连接grpc时怎么跳过tls认证？

这是golang连接grpc服务的代码，是可以正常连接调用的

func main() {
    dialCred := grpc.WithTransportCredentials(credentials.NewTLS(&tls.Config{InsecureSkipVerify: true}))
    conn, err := grpc.Dial(":10000", grpc.WithUnaryInterceptor(UnaryClientInterceptor), dialCred)
    if err != nil {
        fmt.Println(err)
        os.Exit(1)
    }
}

这是php链接grpc服务的代码

private function callClient(string $func, \Google\Protobuf\Internal\Message $param, \Google\Protobuf\Internal\Message $rep, int $attempts)
    {
        $this->client = new \Client\ServiceClient($this->service_host, [
            'credentials' => \Grpc\ChannelCredentials::createInsecure(), //不加密
            'timeout'     => 3000000,                                    //3s
        ]);
        list($reply, $status) = call_user_func([$this->client, $func], $param, $this->getXParams())->wait();
        var_dump($reply, $status);
    }

下面是php调用的打印结果

NULL object(stdClass)#1862 (3) { ["metadata"]=> array(0) { } ["code"]=> int(14) ["details"]=> string(13) "Socket closed" }

问题？

//golang连接grpc时的这个跳过服务端tls验证对应php代码要怎么设置？
dialCred := grpc.WithTransportCredentials(credentials.NewTLS(&tls.Config{InsecureSkipVerify: true}))