Used to print out the given timestamp in relative format.

Relative Time Function

function relative($timestamp, $format = 'M jS \of Y')
{
	$difference = time() - $timestamp;

	if($months = floor($difference / 2592000))
	{
		return date($format, $timestamp);
	}

	$difference -= $months * 2419200;
	$weeks       = floor($difference / 604800);
	$difference -= $weeks * 604800;
	$days        = floor($difference / 86400);
	$difference -= $days * 86400;
	$hours       = floor($difference / 3600);
	$difference -= $hours * 3600;
	$minutes     = floor($difference / 60);
	$difference -= $minutes * 60;
	$seconds     = $difference;

	$relative_date = '';

	if($weeks)
	{
		$relative_date .= pluralize($weeks, 'week', 'weeks');
		$relative_date .= $days ? ($relative_date ? ', ' : '') . pluralize($days, 'day', 'days') : '';
	}
	else if($days)
	{
		$relative_date .= pluralize($days, 'day', 'days');
		$relative_date .= $hours ? ($relative_date ? ', ' : '') . pluralize($hours, 'hour', 'hours') : '';
	}
	else if($hours)
	{
		$relative_date .= pluralize($hours, 'hour', 'hours');
		$relative_date .= $minutes ? ($relative_date ? ', ' : '') . pluralize($minutes, 'minute', 'minutes') : '';
	}
	else if($minutes)
	{
		$relative_date = pluralize($minutes, 'minute', 'minutes');
	}
	else
	{
		$relative_date = pluralize($seconds, 'second', 'seconds');
	}

	if($relative_date == '0 second')
	{
		return 'just a second ago';
	}

	return $relative_date . ' ago';
}

function pluralize($value, $singular, $plural)
{
	return $value . ' ' . ((int) $value > 1 ? $plural : $singular);
}