原版引用自此链接

聊天室服务端示例
目录结构：

config

• socket.php

src

• websocket
• • Config.php
• • run.php
• • WebSocketServer.php 内存表版本
• • WsRedisServer.php redis 版本

WebSocketServer.php 内存表版本

<?php
namespace App\WebSocket;

class WebSocketServer
{
    private $config;
    private $table;
    private $server;

    public function __construct()
    {
        // 内存表 实现进程间共享数据，也可以使用redis替代
        $this->createTable();
        // 实例化配置
        $this->config = Config::getInstance();
    }

    public function run()
    {
        $this->server = new \swoole_websocket_server(
            $this->config['socket']['host'],
            $this->config['socket']['port']
        );

        $this->server->on('open', [$this, 'open']);
        $this->server->on('message', [$this, 'message']);
        $this->server->on('close', [$this, 'close']);

        $this->server->start();
    }

    public function open(\swoole_websocket_server $server, \swoole_http_request $request)
    {
        $user = [
            'fd' => $request->fd,
            'name' => $this->config['socket']['name'][array_rand($this->config['socket']['name'])] . $request->fd,
            'avatar' => $this->config['socket']['avatar'][array_rand($this->config['socket']['avatar'])]
        ];
        // 放入内存表
        $this->table->set($request->fd, $user);

        $server->push($request->fd, json_encode(
                array_merge(['user' => $user], ['all' => $this->allUser()], ['type' => 'openSuccess'])
            )
        );
    }

    private function allUser()
    {
        $users = [];
        foreach ($this->table as $row) {
            $users[] = $row;
        }
        return $users;
    }

    public function message(\swoole_websocket_server $server, \swoole_websocket_frame $frame)
    {
        $this->pushMessage($server, $frame->data, 'message', $frame->fd);
    }

    /**
     * 推送消息
     *
     * @param \swoole_websocket_server $server
     * @param string $message
     * @param string $type
     * @param int $fd
     */
    private function pushMessage(\swoole_websocket_server $server, string $message, string $type, int $fd)
    {
        $message = htmlspecialchars($message);
        $datetime = date('Y-m-d H:i:s', time());
        $user = $this->table->get($fd);

        foreach ($this->table as $item) {
            // 自己不用发送
            if ($item['fd'] == $fd) {
                continue;
            }

            $server->push($item['fd'], json_encode([
                'type' => $type,
                'message' => $message,
                'datetime' => $datetime,
                'user' => $user
            ]));
        }
    }

    /**
     * 客户端关闭的时候
     *
     * @param \swoole_websocket_server $server
     * @param int $fd
     */
    public function close(\swoole_websocket_server $server, int $fd)
    {
        $user = $this->table->get($fd);
        $this->pushMessage($server, "{$user['name']}离开聊天室", 'close', $fd);
        $this->table->del($fd);
    }

    /**
     * 创建内存表
     */
    private function createTable()
    {
        $this->table = new \swoole_table(1024);
        $this->table->column('fd', \swoole_table::TYPE_INT);
        $this->table->column('name', \swoole_table::TYPE_STRING, 255);
        $this->table->column('avatar', \swoole_table::TYPE_STRING, 255);
        $this->table->create();
    }
}

WsRedisServer.php redis 版本

<?php
namespace App\WebSocket;

use Predis\Client;

/**
 * 使用redis代替table，并存储历史聊天记录
 *
 * Class WsRedisServer
 * @package App\WebSocket
 */
class WsRedisServer
{
    private $config;
    private $server;
    private $client;
    private $key = "socket:user";

    public function __construct()
    {
        // 实例化配置
        $this->config = Config::getInstance();
        // redis
        $this->initRedis();
        // 初始化，主要是服务端自己关闭不会清空redis
        foreach ($this->allUser() as $item) {
            $this->client->hdel("{$this->key}:{$item['fd']}", ['fd', 'name', 'avatar']);
        }
    }

    public function run()
    {
        $this->server = new \swoole_websocket_server(
            $this->config['socket']['host'],
            $this->config['socket']['port']
        );

        $this->server->on('open', [$this, 'open']);
        $this->server->on('message', [$this, 'message']);
        $this->server->on('close', [$this, 'close']);

        $this->server->start();
    }

    public function open(\swoole_websocket_server $server, \swoole_http_request $request)
    {
        $user = [
            'fd' => $request->fd,
            'name' => $this->config['socket']['name'][array_rand($this->config['socket']['name'])] . $request->fd,
            'avatar' => $this->config['socket']['avatar'][array_rand($this->config['socket']['avatar'])]
        ];
        // 放入redis
        $this->client->hmset("{$this->key}:{$user['fd']}", $user);

        // 给每个人推送，包括自己
        foreach ($this->allUser() as $item) {
            $server->push($item['fd'], json_encode([
                'user' => $user,
                'all' => $this->allUser(),
                'type' => 'openSuccess'
            ]));
        }
    }

    private function allUser()
    {
        $users = [];
        $keys = $this->client->keys("{$this->key}:*");
        // 所有的key
        foreach ($keys as $k => $item) {
            $users[$k]['fd'] = $this->client->hget($item, 'fd');
            $users[$k]['name'] = $this->client->hget($item, 'name');
            $users[$k]['avatar'] = $this->client->hget($item, 'avatar');
        }
        return $users;
    }

    public function message(\swoole_websocket_server $server, \swoole_websocket_frame $frame)
    {
        $this->pushMessage($server, $frame->data, 'message', $frame->fd);
    }

    /**
     * 推送消息
     *
     * @param \swoole_websocket_server $server
     * @param string $message
     * @param string $type
     * @param int $fd
     */
    private function pushMessage(\swoole_websocket_server $server, string $message, string $type, int $fd)
    {
        $message = htmlspecialchars($message);
        $datetime = date('Y-m-d H:i:s', time());
        $user['fd'] = $this->client->hget("{$this->key}:{$fd}", 'fd');
        $user['name'] = $this->client->hget("{$this->key}:{$fd}", 'name');
        $user['avatar'] = $this->client->hget("{$this->key}:{$fd}", 'avatar');

        foreach ($this->allUser() as $item) {
            // 自己不用发送
            if ($item['fd'] == $fd) {
                continue;
            }

            $is_push = $server->push($item['fd'], json_encode([
                'type' => $type,
                'message' => $message,
                'datetime' => $datetime,
                'user' => $user
            ]));
            // 删除失败的推送
            if (!$is_push) {
                $this->client->hdel("{$this->key}:{$item['fd']}", ['fd', 'name', 'avatar']);
            }
        }
    }

    /**
     * 客户端关闭的时候
     *
     * @param \swoole_websocket_server $server
     * @param int $fd
     */
    public function close(\swoole_websocket_server $server, int $fd)
    {
        $user['fd'] = $this->client->hget("{$this->key}:{$fd}", 'fd');
        $user['name'] = $this->client->hget("{$this->key}:{$fd}", 'name');
        $user['avatar'] = $this->client->hget("{$this->key}:{$fd}", 'avatar');
        $this->pushMessage($server, "{$user['name']}离开聊天室", 'close', $fd);
        $this->client->hdel("{$this->key}:{$fd}", ['fd', 'name', 'avatar']);
    }

    /**
     * 初始化redis
     */
    private function initRedis()
    {
        $this->client = new Client([
            'scheme' => $this->config['socket']['redis']['scheme'],
            'host' => $this->config['socket']['redis']['host'],
            'port' => $this->config['socket']['redis']['port'],
        ]);
    }
}

config.php

<?php
namespace App\WebSocket;

class Config implements \ArrayAccess
{
    private $path;
    private $config;
    private static $instance;

    public function __construct()
    {
        $this->path = __DIR__ . '/../../config/';
    }

    // 单例模式
    public static function getInstance()
    {
        if (!self::$instance) {
            self::$instance = new self();
        }
        return self::$instance;
    }

    public function offsetSet($offset, $value)
    {
        // 阉割
    }

    public function offsetGet($offset)
    {
        if (empty($this->config)) {
            $this->config[$offset] = require $this->path . $offset . ".php";
        }
        return $this->config[$offset];
    }

    public function offsetExists($offset)
    {
        return isset($this->config[$offset]);
    }

    public function offsetUnset($offset)
    {
        // 阉割
    }

    // 禁止克隆
    final private function __clone(){}
}

config/socket.php

<?php
return [
    'host' => '0.0.0.0',
    'port' => 9501,

    'redis' => [
        'scheme' => 'tcp',
        'host' => '0.0.0.0',
        'port' => 6380
    ],

    'avatar' => [
        './images/avatar/1.jpg',
        './images/avatar/2.jpg',
        './images/avatar/3.jpg',
        './images/avatar/4.jpg',
        './images/avatar/5.jpg',
        './images/avatar/6.jpg'
    ],

    'name' => [
        '科比',
        '库里',
        'KD',
        'KG',
        '乔丹',
        '邓肯',
        '格林',
        '汤普森',
        '伊戈达拉',
        '麦迪',
        '艾弗森',
        '卡哇伊',
        '保罗'
    ]
];

run.php

<?php
require __DIR__ . '/../bootstrap.php';

$server = new App\WebSocket\WebSocketServer();

$server->run();