Online PHP editor | output for 6M0eD

@ 2014-09-09T11:18:07Z

<?php
date_default_timezone_set('Asia/Calcutta'); 

function date_diff($start_date, $end_date)
{
	$diff = strtotime($start_date) - strtotime($end_date);
	$Days = $diff/(60*60*24);
	$fullDays = ($now > $end_date) ? floor($Days) : ceil($Days);
	$Hours = ($diff-($fullDays*60*60*24))/(60*60);
	$fullHours  = ($now > $end_date) ? floor($Hours) : ceil($Hours);
	$Minutes = ($diff-($fullDays*60*60*24)-($fullHours*60*60))/60;
	$fullMinutes = ($now > $end_date) ? floor($Minutes) : ceil($Minutes);
	return "Difference is $fullDays days, $fullHours hours and $fullMinutes minutes.";
}

$end_date =  "2014-09-09 12:03:10";
$now = date('Y-m-d H:i:s');

echo date_diff($now, $end_date);

Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.32: Fatal error: Cannot redeclare date_diff() in /in/6M0eD on line 14
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17: Notice: Undefined variable: now in /in/6M0eD on line 8 Notice: Undefined variable: now in /in/6M0eD on line 10 Notice: Undefined variable: now in /in/6M0eD on line 12 Difference is 1 days, -19 hours and -14 minutes.
Output for 5.0.0 - 5.0.5: Fatal error: Call to undefined function date_default_timezone_set() in /in/6M0eD on line 2
Process exited with code 255.
Output for 4.4.5 - 4.4.9: Fatal error: Call to undefined function: date_default_timezone_set() in /in/6M0eD on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4: Fatal error: Call to undefined function: date_default_timezone_set() in /in/6M0eD on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1: Fatal error: Call to undefined function: date_default_timezone_set() in /in/6M0eD on line 2

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