golang 代码：

package main

import (

    "fmt"

    "net"

    "net/rpc"

    "net/rpc/jsonrpc"

)

type App struct{}

type Res struct {

    Code int    `json:"code"`

    Msg  string `json:"msg"`

    Data any    `json:"data"`

}

func (*App) Hi(mp map[string]any, res *Res) error {

    res.Code = 200

    res.Msg = "成功"

    var rmp = make(map[string]any, 0)

    if v, ok := mp["name"].(string); ok {

        rmp["name"] = "my name is " + v

    } else {

        rmp["name"] = "my name is unknown"

    }

    res.Data = rmp

    return nil

}

func main() {

    ln, err := net.Listen("tcp", ":6001")

    if err != nil {

        panic(err)

    }

    rpc.Register(new(App))

    for {

        conn, err := ln.Accept()

        if err != nil {

            continue

        }

        go func(conn net.Conn) {

            fmt.Println("new client")

            jsonrpc.ServeConn(conn)

        }(conn)

    }

}

/******************************************************/

php代码：

composer require tivoka/tivoka

<?php
namespace app\index\controller;

use app\BaseController;
use think\facade\View;

use Tivoka\Client;

class Index extends BaseController
{
    public function index()
    {
        //tcp
        $connection = Client::connect(array('host' => '127.0.0.1', 'port' => 6001));
        $connection->useSpec('1.0');
        $request = $connection->sendRequest('App.Hi', array(['name'=>'ceshi222']));
        dd($request->result);

        }

}

错误排查：

on: cannot unmarshal string into Go value of type [1]interface {}

使用jsonrpc的时候报以上两个错误，一个是因为

{
    "id": 1000,
    "method": "Arith.Divide",
    "params": "[{A:9,B:2}]"
}

一个是因为

{
    "id": 1000,
    "method": "Arith.Divide",
    "params": {
        "A": 9,
        "B": 2
    }
}

正确的应该是

 php端需要多加一层数组：

{
    "id": 1000,
    "method": "Arith.Divide",
    "params": [{
        "A": 9,
        "B": 2
    }]
}