laravel 整合 workerman 做聊天室

在很多时候我们需要做这种聊天室的时候需要实时响应，所以今天介绍一下workerman，如果没有听过workerman的小伙伴，传送门：[workerman文档](http://doc.workerman.net/ "workerman文档") ，[官网](https://www.workerman.net/ "官网")

本篇文章是整合`laravel 5.8`的，使用`artisan` 命令去管理`workerman`。

如果觉得`workerman`不好搞，也可以直接使用`GatewayWorker`，传送门：[GatewayWorker手册](http://doc2.workerman.net/ "GatewayWorker手册") ， [在 Laravel 中使用 GatewayWorker 进行 socket 通讯](https://learnku.com/articles/13151/using-laravel-to-carry-out-socket-communication-in-workerman "在 Laravel 中使用 GatewayWorker 进行 socket 通讯")

#### 第一步 安装workerman

在项目根目录执行

composer require workerman/workerman

#### 第二部 创建命令类，自定义启停workerman

在项目根目录执行

php artisan make:command Workerman

执行该命令会在`app/Console/Commands/`下面创建`Workerman.php`文件，该文件代码如下：

```php
<?php

namespace App\Console\Commands;

use Illuminate\Console\Command;
use Workerman\Autoloader;
use Workerman\Worker;

class Workerman extends Command
{
    /**
     * The name and signature of the console command.
     *
     * @var string
     */
    protected $signature = 'Workerman {action} {--daemonize}';

/**
     * The console command description.
     *
     * @var string
     */
    protected $description = 'workerman 启动停止';

/**
     * Create a new command instance.
     *
     * @return void
     */
    public function __construct()
    {
        parent::__construct();
    }

/**
     * Execute the console command.
     *
     * @return mixed
     */
    public function handle()
    {
        global $argv;//定义全局变量
        $arg = $this->argument('action');
        $argv[1] = $arg;
        $argv[2] = $this->option('daemonize') ? '-d' : '';//该参数是以daemon（守护进程）方式启动

global $text_worker;
        // 创建一个Worker监听2345端口，使用websocket协议通讯
        $text_worker = new Worker("websocket://0.0.0.0:2345");
        $text_worker->uidConnections = array();//在线用户连接对象
        $text_worker->uidInfo = array();//在线用户的用户信息
        // 启动4个进程对外提供服务
        $text_worker->count = 4;
		//引用类文件
        $handler = \App::make('Handler\WorkermanHandler');
        $text_worker->onConnect = array($handler,"handle_connection");
        $text_worker->onMessage = array($handler,"handle_message");
        $text_worker->onClose = array($handler,"handle_close");
        $text_worker->onWorkerStart = array($handler,"handle_start");

// 运行worker
        Worker::runAll();

}
}

```
    注意：action 是启动参数，daemonize选项是是否后台运行，如果不需要后台运行请把有关daemonize的代码删掉。
    最最重要的地方来了$argv一定不能删掉，否则启动workerman的时候会报错

然后手动创建`app/Handler/WorkermanHandler.php`文件，代码如下：

```php
<?php
namespace Handler;

use Illuminate\Console\Command;
use Workerman\Lib\Timer;
use Workerman\Worker;

class WorkermanHandler
{

private $heartbeat_time = 55;//心跳间隔55秒

//当客户端连上来时分配uid,并保存链接,并通知所有客户端
    public function handle_connection($connection){
        global $text_worker;

//判断是否设置了UID
        if(!isset($connection->uid)){
            //给用户分配一个UID
            $connection->uid = random_string(20);
            //保存用户的uid
            $text_worker->uidConnections["{$connection->uid}"] = $connection;
            //向用户返回创建成功的信息
            $connection->send("用户:[{$connection->uid}] 创建成功");
        }
    }

public function handle_start(){
        global $text_worker;
        //每秒都判断客户端是否已下线
        Timer::add(1, function()use($text_worker){
            $time_now = time();
            foreach($text_worker->connections as $connection) {
                // 有可能该connection还没收到过消息，则lastMessageTime设置为当前时间
                if (empty($connection->lastMessageTime)) {
                    $connection->lastMessageTime = $time_now;
                    continue;
                }
                // 上次通讯时间间隔大于心跳间隔，则认为客户端已经下线，关闭连接
                if ($time_now - $connection->lastMessageTime > $this->heartbeat_time) {
                    $connection->close();
                }
            }
        });
        //每隔30秒就向客户端发送一条心跳验证
        Timer::add(50,function ()use ($text_worker){
            foreach ($text_worker->connections as $conn){
                $conn->send('{"type":"ping"}');
            }
        });
    }

//当客户端发送消息过来时,转发给所有人
    public function handle_message($connection,$data){
        global $text_worker;
        //debug
        //echo "data_info:".$data.PHP_EOL;
        $connection->lastMessageTime = time();
        $data_info=json_decode($data,true);
        if(!$data_info){
            return ;
        }
        //判断业务类型
        switch($data_info['type'])
        {
            case 'login':
                //判断用户信息是否存在
                if(empty($data_info['user_id'])){
                    $connection->send("{'type':'error','msg':'非法请求'}");
                    return $connection->close();
                }
                //判断用户是否已经登录了
                $user_ids=array_column($text_worker->uidInfo,"user_id");
                if(in_array($data_info['user_id'],$user_ids)){
                    $connection->send("{'type':'error','msg':'你在其它地方已登录'}");
                    return $connection->close();
                }
                //存储用户信息
                $text_worker->uidInfo["{$connection->uid}"]=array(
                    "user_id"=>$data_info['user_id'],
                    "user_name"=>htmlspecialchars($data_info['user_name']),
                    "user_header"=>$data_info['user_header'],
                    "create_time"=>date("Y-m-d H:i"),
                );
                //返回数据
                if($data_info['to_uid'] == "all"){
                    $return_data=array(
                        "type"=>"login",
                        "uid"=>$connection->uid,
                        "user_name"=>htmlspecialchars($data_info['user_name']),
                        "user_header"=>$data_info['user_header'],
                        "send_time"=>date("Y-m-d H:i",time()),
                        "user_lists"=>$text_worker->uidInfo
                    );
                    $curral_data=array(
                        "type"=>"login_uid",
                        "uid"=>$connection->uid,
                    );
                    $connection->send(json_encode($curral_data));
                    //给所有用户发送一条数据
                    foreach($text_worker->connections as $conn){
                        $conn->send(json_encode($return_data));
                    }
                }else{
                    return ;
                }
                return;
            //用户发消息
            case 'say':
                if(!isset($text_worker->uidInfo["{$connection->uid}"]) || empty($text_worker->uidInfo["{$connection->uid}"])){
                    $connection->send('{"type":"error","msg":"你已经掉线了"}');
                }
                //获取到当前用户的信息
                $user_info=$text_worker->uidInfo["{$connection->uid}"];

//判断是私聊还是群聊
                if($data_info['to_uid'] != "all"){
                    //私聊
                    $return_data=array(
                        "type"=>"say",
                        "from_uid"=>$connection->uid,
                        "from_user_name"=>$user_info['user_name'],
                        "from_user_header"=>$user_info['user_header'],
                        "to_uid"=>$data_info['to_uid'],
                        "content"=>nl2br(htmlspecialchars($data_info['content'])),
                        "send_time"=>date("Y-m-d H:i")
                    );
                    if($data_info['to_uid'] == $connection->uid){
                        $connection->send(json_encode($return_data));
                        return;
                    }
                    //判断用户是否存在，并向对方发送数据
                    if(isset($text_worker->uidConnections["{$data_info['to_uid']}"])){
                        $to_connection=$text_worker->uidConnections["{$data_info['to_uid']}"];
                        $to_connection->send(json_encode($return_data));
                    }
                    //向你自己发送一条数据
                    $connection->send(json_encode($return_data));
                }else{
                    //群聊
                    $return_data=array(
                        "type"=>"say",
                        "from_uid"=>$connection->uid,
                        "from_user_name"=>$user_info['user_name'],
                        "from_user_header"=>$user_info['user_header'],
                        "to_uid"=>"all",
                        "content"=>nl2br(htmlspecialchars($data_info['content'])),
                        "send_time"=>date("Y-m-d H:i")
                    );
                    //向所有用户发送数据
                    foreach($text_worker->connections as $conn){
                        $conn->send(json_encode($return_data));
                    }
                }
                return;
            case "pong":
                return;
        }
    }

//当客户端断开时,广播给所有客户端
    public function handle_close($connection){
        global $text_worker;
        $user_name=$text_worker->uidInfo[$connection->uid]['user_name'] ?? "";
        unset($text_worker->uidConnections["{$connection->uid}"]);
        unset($text_worker->uidInfo["{$connection->uid}"]);
        if(!empty($user_name)){
            $return_data=array(
                "type"=>"logout",
                "uid"=>$connection->uid,
                "user_name"=>$user_name,
                "create_time"=>date("Y-m-d H:i:s"),
            );
            foreach($text_worker->connections as $conn){
                $conn->send(json_encode($return_data));
            }
        }

}

}
```

该代码是我这边自己的代码，有些东西没有贴出来，只做参考，比如怎么实现维持心跳和分配用户唯一id等。

打开`composer.json`文件增加一段`"app/Handler"`于classmap中，下面是我的部分内容：

...
        "autoload": {
            "classmap": [
                "database/seeds",
                "database/factories",
                "app/Handler" 
            ],
            "psr-4": {
                "App\\": "app/"
            }
        },
    ...

执行命令: `composer dump-autoload`

执行命令启动`workerman`

`php artisan Workerman start --daemonize`

再说一遍：app\Console\Commands\Workerman.php 里的代码 $arg = $this->argument('action'); $argv [1] = $arg; 如果这段代码不写那么就无法启动服务会报Usage: php yourfile.php {start|stop|restart|reload|status|connections} [-d]
    
    原因: 参考接收位置错误. 代码位置: \vendor\workerman\workerman\Worker.php 673 684, 问题位置 673行中, $argv 这个全局变量取的key的位置错乱的.

如果你是debug模式启动workerman的话，就把app\Console\Commands\Workerman.php 里的 关于daemonize的代码删掉，启动命令就是`php artisan Workerman start`

#### 参考资料

[laravel使用Workerman搭建简易聊天室](https://www.jianshu.com/p/4ef8dcffdbe7 "laravel使用Workerman搭建简易聊天室")
[laravel-workerman简易聊天室](http://www.majianwei.com/archives/6907 "laravel-workerman简易聊天室")

laravel 整合 workerman 做聊天室

layui 的 checkbox 联动，监听事件不准确

PHP 控制 QPS (Query Per Second) 的写法

phpstudy 升级 MySQL版本到MySQL5.7

laravel php artisan migrate 指定迁移文件

CSS修改Autocomplete样式

Navicat 远程连接 mysql报can't connect to mysql server on 10060

editor.md 把github emoji的图片换到本地

在使用laravel+layui时，模板语法冲突

微擎数据库表结构，供参考！

laravel 表单验证返回自定义的信息

PHP 用正则分章节

editor.md 把代码块修改为暗黑系风格