counttimerdown no sleep

gistfile1.php

<?php 

mysql_query('INSERT INTO mytable (counttimer)
		VALUES ("01:11:11")');


$res = mysql_query('SELECT * FROM mytable LIMIT 1');

$row = mysql_fetch_row($res);


$timestamp =  time() - strtotime($row[0]);


$finalTime = strftime('%T', $timestamp);

mysql_query("UPDATE mytable SET counttimer = '{$finalTime}' LIMIT 1");