Class for time measuring

Timer.php

<?php

/**
 * @author Daniel Robenek
 * @license MIT
 * @since 2011
 */

namespace Debug;

use Nette\Object;
use Nette\Debug;

/**
 * Class for time measuring
 */
class Timer extends Object {

	/**
	 * Static timers
	 * @var Timer
	 */
	protected static $timers = array();

	/**
	 * Start time
	 * @var long
	 */
	protected $time;

	/**
	 * Time diff between stop and start in us
	 * @var long
	 */
	protected $diff = 0;

	/**
	 * Creates new timer
	 * @param bool $start Start measuring?
	 */
	function __construct($start = true) {
		if($start)
			$this->start();
	}

	/**
	 * Starts measuring
	 */
	public function start() {
		$this->time = microtime();
	}

	/**
	 * Stops measuring
	 * @return long time in ms
	 */
	public function stop() {
		list($oldus, $olds) = explode(" ", $this->time);
		list($newus, $news) = explode(" ", microtime());
		$s = $news - $olds;
		$us = $newus - $oldus;
		$this->diff = $s + $us;
		return $this->getTime();
	}

	/**
	 * Get time diff
	 * @return long Measured time in ms
	 */
	public function getTime() {
		return $this->diff * 1000;
	}

	/**
	 * Dump measured time in ms
	 * @param string $name Description of value
	 */
	public function barDump($name = "Timer") {
		Debug::barDump(round($this->getTime(), 5) . " ms", $name);
	}

	/**
	 * Creates new timer
	 * @param string $name Name of timer
	 * @param bool $start Start measuring?
	 * @return Timer
	 */
	public static function create($name = "timer", $start = true) {
		self::$timers[$name] = new Timer($start);
		return self::$timers[$name];
	}

	/**
	 * Get static timer
	 * @param string Name of timer
	 * @return Timer
	 */
	public static function getTimer($name = "timer") {
		return self::$timers[$name];
	}

	/**
	 * Stop timer and dump time on bar
	 * @param string $name Name of timer
	 */
	public static function stopAndDump($name = "timer") {
		self::$timers[$name]->stop();
		self::$timers[$name]->barDump($name);
	}

}