use Workerman\Worker;

 require_once __DIR__ . '/Workerman/Autoloader.php';

 $monitor_dir = realpath(__DIR__.'/..');

 $worker = new Worker();

 $worker->name = 'FileMonitor';

 $worker->reloadable = false;

 $last_mtime = time();

 $worker->onWorkerStart = function ($task) {

      global $monitor_dir;

     //每隔2.5 秒 执行一次

     $time_interval = 2.5;

     \Workerman\Lib\Timer::add($time_interval,"check_files_change",array($monitor_dir));

 };

 Worker::runAll();

 /**

  * 定时执行函数

  */

 function check_files_change($monitor_dir) {

     global $last_mtime;

     // spl 迭代器 php > 5.5 以上 链接 http://php.net/manual/zh/class.recursivedirectoryiterator.php

     $dir_iterator = new RecursiveDirectoryIterator($monitor_dir);

     $iterator = new RecursiveIteratorIterator($dir_iterator);

     foreach ($iterator as $file) {

         // 只对 后缀为php 的文件监控

         if(pathinfo($file, PATHINFO_EXTENSION) != 'php') {

             continue;

         }

         // 当前时间和文件最后一次更新文件 比较

         if($last_mtime < $file->getMTime()) {

             echo $file." update and reload\n";

             //windows 必须屏蔽这行代码 不然报错

            // posix_kill(posix_getppid(), SIGUSR1);

             $last_mtime = $file->getMTime();

             break;

         }

     }

 }