<?php class Timer { static $time=array(); public function set($n='0') { list($msec, $sec) = explode(chr(32), microtime()); self::$time[$n]=$msec+$sec; } public function get($n='0') { list($msec, $sec) = explode(chr(32), microtime()); $now=$msec+$sec; return round($now-self::$time[$n], 12)."<br/>"; } }