Mine

<?php
//Each bot has its own "timer" class, minimally this runs every what 100th of a second.
//Timers are processed on there own :P

class timers {
	//Local variables
	public $timerStack = array();	//list of all timers indexed by name

	function __construct() {
		echo "YO I started!!";
	}
	function handle() {
		if (count($this->timerStack) > 0) {
			foreach($this->timerStack as $timerid => $timer) {
				if ($timer['nextrun'] <= time()) {
					$this->processTimer($timerid);
				}
			}
		}
	}
	function processTimer($timerid) {
		if (isset($this->timerStack[$timerid])) {
			$timer = $this->timerStack[$timerid];
			$timer['lastrun'] = time();
			$timer['nextrun'] = time()+$timer['duration'];
			$timer['ran']++;
			$this->timerStack[$timerid] = $timer;
			if (method_exists($timer['class'], $timer['function'])) {
				$value = call_user_method($timer['function'], $timer['class'], $timer['args']);
			} else {
				$this->stop($timerid);
			}
			if ($timer['times'] != 0 && $timer['ran'] >= $timer['times']) { $this->stop($timerid); }
			if ($value == HALT_TIMER) { $this->stop($timerid); }
		}
	}
	/**
	 * Add/Updates a timer. Note when you re-add the timer gets reset.
	 *
	 * @param string $name
	 * @param int $times
	 * @param mixed $duration
	 * @param object $class
	 * @param function $function
	 * @param parmeters $args
	 * @param bool $runNow
	 * @return bool
	 */
	function add($name, $times, $duration, $class, $function, $args, $runNow = false) {
		if (!method_exists($class,$function)) {
			return false;
		}
		if (!ctype_digit($duration)) {
			$duration = getDuration($duration);
		}
		if ($duration <= 0 || !$duration) {
			return false;
		}

		$this->timerStack[$name] = array(
		'lastrun' => time(),
		'nextrun' => time()+$duration,
		'class' => $class,
		'function' => $function,
		'args' => $args,
		'times' => $times,
		'duration' => $duration,
		'ran' => 0);
		if ($runNow == true) {
			$this->processTimer($name);
		}
	}
	function stop($timer) {
		if (key_exists($timer, $this->timerStack)) {
			unset($this->timerStack[$timer]);
			return true;
		} else {
			return false;
		}
	}

	function timer($timer) {
		if (!key_exists($timer,$this->timerStack)) {
			return false;
		}
		return $this->timerStack[$timer];
	}
}

?>