一、安装Workerman
进入项目根目录运行命令(前提composer已经安装好)
官方教程：https://www.kancloud.cn/manual/thinkphp5_1/354134
composer require topthink/think-worker=2.0.*
二、运行
安装完扩展后，你什么都不需要做，最简单的就是直接在命令行（应用根目录下面）下执行：
php think worker
2.1 错误：错误原因：命名空间冲突
[think\exception\ErrorException]
Cannot use Workerman\Worker as Worker because the name is already in use
解决办法：
找到目录：
\vendor\topthink\think-worker\src\command\Server.php
找到命名空间：
use Workerman\Worker;
修改为：
use Workerman\Worker as Worker2;
紧接着修改 75,97,108, 119 行与 126的 worker 改为 Worker2
找到目录：
\vendor\topthink\think-worker\src\command\GatewayWorker.php
找到命名空间
use Workerman\Worker;
修改为：
use Workerman\Worker as Worker3;
php think worker
参考：
ThinkPHP 5.1 Workerman 快速上手指南：https://www.kancloud.cn/thinkphp/think-worker/722897
ThinkPHP 5.1 Workerman 快速上手指南：https://www.jianshu.com/p/5070b9f36654
