TimeHelper::getFormattedOffset

public function getFormattedOffset($offsetSeconds, $leadingHourZero = true)
{
	if (!isset($this->formattedOffsets[$offsetSeconds]))
	{
		$gmtOffset = $offsetSeconds > 0 ? '+' : '-';
		$res = $gmtOffset . $this->convertSecondsToHoursMinutes(abs($offsetSeconds), $leadingHourZero);
		$this->formattedOffsets[$offsetSeconds] = $res;
	}
	return $this->formattedOffsets[$offsetSeconds];
}