golang代码：

package main

import (

    "context"

    "net"

    "net/rpc"

    "github.com/powerman/rpc-codec/jsonrpc2"

)

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

}

type exampleContextKey string

var RemoteAddrContextKey exampleContextKey = "RemoteAddr"

func main() {

    rpc.Register(&App{})

    //Server provide a TCP transport.

    lnTCP, err := net.Listen("tcp", "127.0.0.1:6001")

    if err != nil {

        panic(err)

    }

    defer lnTCP.Close()

    for {

        conn, err := lnTCP.Accept()

        if err != nil {

            return

        }

        ctx := context.WithValue(context.Background(), RemoteAddrContextKey, conn.RemoteAddr())

        go jsonrpc2.ServeConnContext(ctx, 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('2.0');
        $request = $connection->sendRequest('App.Hi', ['name'=>'ceshi222']);
        dd($request->result);

      }

}