Horde_Date::_initializeTimezone PHP Method

    protected function _initializeTimezone($timezone)
    {
        if (empty($timezone)) {
            $timezone = date_default_timezone_get();
        } elseif (array_key_exists($timezone, self::$_timezoneAliases)) {
            /* Workaround for standard cases of bug #11688 */
            $timezone = self::$_timezoneAliases[$timezone];
        }
        $this->_timezone = $timezone;
    }