<?php
/*
This is a generic timer class.

version 0.1 - 18-Jun-01

Written by Jim Kraai (JimKraai@Polytopic.com)
*/

class timerClass {

	var $startTime;
	var $started;

	function timerClass($start=true) {
		$this->started = false;
		if ($start)
			$this->start();
	}

	function start() {
		$startMtime = explode(' ',microtime());
		$this->startTime = (double)($startMtime[0])+(double)($startMtime[1]);
		$this->started = true;
	}

	function end($iterations=1) {
		// get the time, check whether the timer was started later
		$endMtime = explode(' ',microtime());
		if ($this->started) {
			$endTime = (double)($endMtime[0])+(double)($endMtime[1]);
			$dur = $endTime - $this->startTime;
			$avg = 1000*$dur/$iterations;
			$avg = round(1000*$avg)/1000;
			return "$avg milliseconds";
		} else {
			return "timer not started";
		}
	}

}
?>