[李景山php] swoole 异步 tcp服务器使用

$serv = new swoole_server("127.0.0.1", 9501);//设置异步任务的工作进程数量$serv->set(array('task_worker_num' => 4));$serv->on('receive', function($serv, $fd, $from_id, $data) {    //投递异步任务    $task_id = $serv->task($data);    echo "Dispath AsyncTask: id=$task_id\n";});//处理异步任务$serv->on('task', function ($serv, $task_id, $from_id, $data) {    echo "New AsyncTask[id=$task_id]".PHP_EOL;    //返回任务执行的结果    $serv->finish("$data -> OK");});//处理异步任务的结果$serv->on('finish', function ($serv, $task_id, $data) {    echo "AsyncTask[$task_id] Finish: $data".PHP_EOL;});$serv->start();