我正在尝试使用下面给出的以下代码创建 google 日历事件,但我得到类 Event not found 。如何创建新事件。请帮忙
<?php
         require_once '../../src/Google_Client.php';
         require_once '../../src/contrib/Google_CalendarService.php';
         session_start();
         $client = new Google_Client();
         $client->setApplicationName("Google Calendar PHP Starter Application");
         $client->setClientId('');
         $client->setClientSecret('');
         $client->setRedirectUri('simple.php');
         $client->setDeveloperKey('insert_your_developer_key');
         $cal = new Google_CalendarService($client);
         if (isset($_GET['logout'])) {
           unset($_SESSION['token']);
         }
         if (isset($_GET['code'])) {
            $client->authenticate($_GET['code']);
            $_SESSION['token'] = $client->getAccessToken();
            header('Location: http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF']);
        }
        if (isset($_SESSION['token'])) {
           $client->setAccessToken($_SESSION['token']);
        }
        $authUrl = $client->createAuthUrl();
if (!$client->getAccessToken()) {
这里正在创建新活动
          $event = new Event();
          $event->setSummary("test title");
          $event->setLocation("test location");
          $start = new EventDateTime();
          $start->setDateTime('04-03-2012 09:25:00:000 -05:00');
          $event->setStart($start);
          $end = new EventDateTime();
          $end->setDateTime('04-03-2012 10:25:00:000 -05:00');
          $createdEvent = $cal->events->insert('primary', $event);
          echo $createdEvent->getId();
}