Horde_Date::_initializeFromObject PHP Method

    protected function _initializeFromObject($date)
    {
        if ($date instanceof DateTime) {
            $this->_year = (int) $date->format('Y');
            $this->_month = (int) $date->format('m');
            $this->_mday = (int) $date->format('d');
            $this->_hour = (int) $date->format('H');
            $this->_min = (int) $date->format('i');
            $this->_sec = (int) $date->format('s');
            $this->_initializeTimezone($date->getTimezone()->getName());
        } else {
            $is_horde_date = $date instanceof Horde_Date;
            foreach (array('year', 'month', 'mday', 'hour', 'min', 'sec') as $key) {
                if ($is_horde_date || isset($date->{$key})) {
                    $this->{'_' . $key} = (int) $date->{$key};
                }
            }
            if (!$is_horde_date) {
                $this->_correct();
            } else {
                $this->_initializeTimezone($date->timezone);
            }
        }
    }