<?php
 /**
 *定時器
 */
 class Timer
 {
  //保留所有定時任務
  public static $task = array();
 
   //定時間隔
   public static $time = 1;
 
   /**
  *開啟服務
   *@param $time int
  */
  public static function run($time = null)
   {
   if($time)
    {
      self::$time = $time;
    }
    self::installHandler();
    pcntl_alarm(1);
   }
   /**
   *注冊信號處理函數
   */
   public static function installHandler()
   {
    pcntl_signal(SIGALRM, array('Timer','signalHandler'));
   }
 
   /**
   *信號處理函數
   */
   public static function signalHandler()
   {
    self::task();
   //一次信號事件執行完成后,再觸發下一次
   pcntl_alarm(self::$time);
   }
 
   /**
   *執行回調
   */
   public static function task()
   {
    if(empty(self::$task))
    {//沒有任務,返回
      return ;
    }
    foreach(self::$task as $time => $arr)
   {
      $current = time();
   
     foreach($arr as $k => $job)
    {//遍歷每一個任務
       $func = $job['func']; /*回調函數*/
       $argv = $job['argv']; /*回調函數參數*/
     $interval = $job['interval']; /*時間間隔*/
       $persist = $job['persist']; /*持久化*/
 
       if($current == $time)
       {//當前時間有執行任務
 
      //調用回調函數,并傳遞參數
        call_user_func_array($func, $argv);
      
      //刪除該任務
        unset(self::$task[$time][$k]);
       }
       if($persist)
       {//如果做持久化,則寫入數組,等待下次喚醒
        self::$task[$current+$interval][] = $job;
       }
    }
    if(empty(self::$task[$time]))
    {
     unset(self::$task[$time]);
    }
    }
   }
 
   /**
   *添加任務
   */
   public static function add($interval, $func, $argv = array(), $persist = false)
   {
    if(is_null($interval))
    {
     return;
    }
    $time = time()+$interval;
   //寫入定時任務
   self::$task[$time][] = array('func'=>$func, 'argv'=>$argv, 'interval'=>$interval, 'persist'=>$persist);
   }
 
   /**
   *刪除所有定時器任務
   */
   public function dellAll()
   {
    self::$task = array();
   }
 }

<?php
 
 class DoJob
 {
  public function job( $param = array() )
  {
   $time = time();
   echo "Time: {$time}, Func: ".get_class()."::".__FUNCTION__."(".json_encode($param).")\n";
  }
 }

<?php
 
 require_once(__DIR__."/Timer.php");
 require_once(__DIR__."/DoJob.php");
 
 
 Timer::dellAll();
 
 Timer::add( 1, array('DoJob','job'), array(),true);
 
 Timer::add( 3, array('DoJob','job'),array('a'=>1), false);
 
 echo "Time start: ".time()."\n";
 Timer::run();
 
 while(1)
 {
  sleep(1);
  pcntl_signal_dispatch();
 }