目录结构:

 

服务器端:

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<?php
/*
*author:hdj
*/
namespace app\Console;
use think\console\Command;
use think\console\Input;
use think\console\Output;

class Websocket extends Command{
    protected $server;
    protected function configure()
    {
       $this->setName('websocket:start')->setDescription('Start Web Socket Server!');
    }
    protected function execute(Input $input, Output $output)
    {
        $serv = new \swoole_server('0.0.0.0',9501);

        $serv->set(array('task_worker_num' => 4));

        $serv->on('connect', function ($serv, $fd){
            echo $fd."客户端已经连接进来了.\n";
        });
        $serv->on('receive', function($serv, $fd, $from_id, $data) {
            $task_id = $serv->task($data);
            echo "开始投递异步任务 id=$task_id\n";
        });

        $serv->on('task', function ($serv, $task_id, $from_id, $data) {
            echo "接收异步任务[id=$task_id]".PHP_EOL;
            for ($i = 0 ; $i<10000;$i++){
                if($i%2==0){
                    echo 'send'.$i.' success'."\n";
                }else{
                    echo 'send'.$i.' fail'."\n";
                }
                sleep(1);
            }

            $serv->finish("$data -> OK");
        });

        $serv->on('finish', function ($serv, $task_id, $data) {
            echo "异步任务[id=$task_id]完成".PHP_EOL;
        });
        $serv->start();
    }
}
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进入你的根目录 执行  php think websocket:start

客户端:

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<?php
namespace app\index\controller;
use think\Controller;
class Test extends Controller
{
  public function index(){
      $client = new \swoole_client(SWOOLE_SOCK_TCP, SWOOLE_SOCK_SYNC);
      $ret = $client->connect("23.27.127.32", 9501);
      if(empty($ret)){
          echo 'error!connect to swoole_server failed';
      } else {
          $client->send('blue');
      }
  }

}
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服务端显示: