- date_default_timezone_set: documentation ( source)
- ceil: documentation ( source)
- date: documentation ( source)
- strtotime: documentation ( source)
<?php
date_default_timezone_set('Asia/Calcutta');
$end_date = "2014-09-09 12:03:10";
$now = date('Y-m-d H:i:s');
$diff = strtotime($now) - strtotime($end_date);
$fullDays = ceil($diff/(60*60*24));
$fullHours = ceil(($diff-($fullDays*60*60*24))/(60*60));
$fullMinutes = ceil(($diff-($fullDays*60*60*24)-($fullHours*60*60))/60);
echo "Difference is $fullDays days, $fullHours hours and $fullMinutes minutes.";