Php 更新Google日历-致命错误：调用未定义的函数dateTime（）

我正在尝试使用PHP API更新Google日历。我已成功创建Google日历事件并自动获取事件的ID，但当我尝试更新事件时，出现以下错误：

PHP致命错误：在第45行的public_html/googleapi/calendarupdate.PHP中调用未定义的函数dateTime（）。这是指：

$event->setStart.dateTime($startdatetime);

$event->setStart.dateTime($startdatetime);

以下是我当前的错误PHP代码：

    <?php

header('Content-type: application/json');

require_once __DIR__ . '/google-api-php-client/src/Google/autoload.php';

$summary = $_POST["summary"];
$location = $_POST["location"];
$description = $_POST["description"];
$startdatetime = $_POST["startdatetime"];
$enddatetime = $_POST["enddatetime"];
$clientemail = $_POST["clientemail"];
$privatekey = $_POST["privatekey"];
$useremail = $_POST["useremail"];
$calendarid = $_POST["calendarid"];



$client_email = $clientemail;
$private_key = file_get_contents($privatekey);
$scopes = array('https://www.googleapis.com/auth/calendar');
$user_to_impersonate = $useremail;
$credentials = new Google_Auth_AssertionCredentials(
    $client_email,
    $scopes,
    $private_key,
    'notasecret',                                 // Default P12 password
    'http://oauth.net/grant_type/jwt/1.0/bearer', // Default grant type
    $user_to_impersonate
);
$client = new Google_Client();
$client->setAssertionCredentials($credentials);
if ($client->getAuth()->isAccessTokenExpired()) {
  $client->getAuth()->refreshTokenWithAssertion();
}

$service = new Google_Service_Calendar($client);

$event = $service->events->get($useremail, $calendarid);
$event->setSummary($summary);
$event->setLocation($location);
$event->setStart.dateTime($startdatetime);
$event->setStart.timeZone('America/Los_Angeles');
$event->setEnd.dateTime($enddatetime);
$event->setEnd.timeZone('America/Los_Angeles');
$event->setDescription($description);

$updatedEvent = $service->events->update($useremail, $event->getId(), $event);

echo json_encode($updatedEvent);

---

好的，我确实设法弄明白了。我只是换了句台词：

$event->setStart.dateTime($startdatetime);

$event->setStart.dateTime($startdatetime);

为此：

$event->start->setDateTime($startdatetime);

我对EndDateTime做了同样的事情，除了上面写着start的地方，我只是把end放在了后面。只是测试了一下，效果很好。可以找到帮助我解决问题的网站。
设置开始日期是一种方法，您需要将日期$event->setStart（$date）传递给它；