安装swoole扩展

composer require topthink/think-swoole

配置swoole
文件位置 config/swoole.php

<?php

use think\swoole\websocket\socketio\Handler;
use think\swoole\websocket\socketio\Parser;

return [
    'server'     => [
        'host'      => env('SWOOLE_HOST', '127.0.0.1'), // 监听地址
        'port'      => env('SWOOLE_PORT', 80), // 监听端口
        'mode'      => SWOOLE_PROCESS, // 运行模式 默认为SWOOLE_PROCESS
        'sock_type' => SWOOLE_SOCK_TCP, // sock type 默认为SWOOLE_SOCK_TCP
        'options'   => [
            'pid_file'              => runtime_path() . 'swoole.pid',
            'log_file'              => runtime_path() . 'swoole.log',
            'daemonize'             => true,//长连接必须开启保护模式
            // Normally this value should be 1~4 times larger according to your cpu cores.
            'reactor_num'           => swoole_cpu_num(),
            'worker_num'            => swoole_cpu_num(),
            'task_worker_num'       => swoole_cpu_num(),
            'enable_static_handler' => true,
            'document_root'         => root_path('public'),
            'package_max_length'    => 40 * 1024 * 1024,
            'buffer_output_size'    => 20 * 1024 * 1024,
            'socket_buffer_size'    => 256 * 1024 * 1024,
            'user'                  => 'nobody'
        ],
    ],
    'websocket'  => [
        'enable'        => true,
        'handler'       => Handler::class,
        'parser'        => Parser::class,
        'ping_interval' => 25000,
        'ping_timeout'  => 60000,
        'room'          => [
            'type'  => 'table',
            'table' => [
                'room_rows'   => 4096,
                'room_size'   => 2048,
                'client_rows' => 8192,
                'client_size' => 2048,
            ],
            'redis' => [
                'host'          => '127.0.0.1',
                'port'          => 6379,
                'max_active'    => 5,
                'max_wait_time' => 5,
            ],
        ],
        'listen'        => [],
        'subscribe'     => [],
    ],
    'rpc'        => [
        'server' => [
            'enable'   => false,
            'port'     => 9000,
            'services' => [
            ],
        ],
        'client' => [
        ],
    ],
    'hot_update' => [
        'enable'  => true,
        'name'    => ['*.php'],
        'include' => [app_path()],
        'exclude' => [],
    ],
    //连接池
    'pool'       => [
        'db'    => [
            'enable'        => true,
            'max_active'    => 3,
            'max_wait_time' => 5,
        ],
        'cache' => [
            'enable'        => true,
            'max_active'    => 3,
            'max_wait_time' => 5,
        ],
        //自定义连接池
    ],
    'coroutine'  => [
        'enable' => true,
        'flags'  => SWOOLE_HOOK_ALL,
    ],
    'tables'     => [],
    //每个worker里需要预加载以共用的实例
    'concretes'  => [],
    //重置器
    'resetters'  => [],
    //每次请求前需要清空的实例
    'instances'  => [],
    //每次请求前需要重新执行的服务
    'services'   => [],
];

监听事件
文件位置 app/event.php

<?php
// 事件定义文件
return [
    'bind'      => [
    ],

    'listen'    => [
        'AppInit'  => [],
        'HttpRun'  => [],
        'HttpEnd'  => [],
        'LogLevel' => [],
        'LogWrite' => [],
        'swoole.webtsocket.Close'       => [
            \app\listener\WsClose::class
        ],
        'swoole.webtsocket.Connect'       => [
            \app\listener\WsConnect::class
        ]，
        'swoole.webtsocket.Test'       => [
           \app\listener\WsTest::class,
        ],
    ],

    'subscribe' => [
    ],
];

创建监听文件

php think make:listener WsTest

文件生成位置 app/listener/WsTask.php

<?php
declare (strict_types = 1);

namespace app\listener;

class WsTest
{
    public function handle($event)
    {
    	//发送消息
    	 $ws->emit('callback',$list);
    	 return;
    }
}