Duration::getFormattedInterval

public function getFormattedInterval()
{
	if ($this->getInterval() < self::getMinimalInterval())
	{
		return self::getFormattedMinimalInterval();
	}
	elseif ($this->getInterval() > self::getMaximalInterval())
	{
		return self::getFormattedMaximalInterval();
	}
	else
	{
		$formatted = FormatDate('Hdiff', $this->getDate());
		if (mb_substr($formatted, 0, 1) === '-')
		{
			$formatted = mb_substr($formatted, 1);
		}

		return $formatted;
	}
}