问Google Calendar API -更新事件的开始和结束日期/时间

EN

if ($eventOld = getEvent($client, $eventId)) {
        //echo "Old title: " . $eventOld->title->text . "<br />\n";
        $eventOld->title = $gdataCal->newTitle($title);
        $eventOld->where = array($gdataCal->newWhere($where));
        $eventOld->content = $gdataCal->newContent("$description");

        $eventOld->when[startTime] = "{$startDate}T{$startTime}:00.000{$tzOffset}:00";
        $eventOld->when[endTime] = "{$endDate}T{$endTime}:00.000{$tzOffset}:00";

        print $startDate;

        try 
        {
            $eventOld->save();
        } 
        catch (Zend_Gdata_App_Exception $e) 
        {
            var_dump($e);
            return null;
        }
        //return $eventNew;
    }
    else 
    {
        return null;
    }