How to create events on google calender by any invitation email in PHP?

 <?php

require __DIR__ . '/vendor/autoload.php';

$client = new Google_Client();

$client->setAuthConfig('client_secret_397900761893-afl4gdg99gcfbaab0aip6jo1ha2824vg.apps.googleusercontent.com.json');

$client->setAccessType('offline');

$client->setPrompt('select_account consent');

$client->setRedirectUri('http://localhost'); // Update this line

$client->addScope(Google_Service_Calendar::CALENDAR);

$client->setHttpClient(new \GuzzleHttp\Client(['verify' => __DIR__ . '/cacert.pem']));

// If the token is not stored or expired, authenticate and generate a new one

if (!file_exists('token.json')) {

    // Redirect the user to the authorization URL

    $authUrl = $client->createAuthUrl();

    header('Location: ' . filter_var($authUrl, FILTER_SANITIZE_URL));

    exit;

} else {

    file_put_contents('debug_token.txt', file_get_contents('token.json'));

    $accessToken = json_decode(file_get_contents('token.json'), true);

}

// Set the access token to the client

$client->setAccessToken($accessToken);

// Create a Google Calendar service object

$service = new Google_Service_Calendar($client);

// Define the event details, including the guest's email in the attendees field

$event = new Google_Service_Calendar_Event(array(

    'summary' => '11 Client Meeting 11',

    'description' => 'Discuss project details with the client.',

    'start' => array(

        'dateTime' => '2024-01-13T10:00:00',

        'timeZone' => 'Asia/Kolkata',

    ),

    'end' => array(

        'dateTime' => '2024-01-13T11:00:00',

        'timeZone' => 'Asia/Kolkata',

    ),

));

// Add guests to the event

$event->setAttendees([

    ['email' => 'jas@gmail.com']

    ['email' => 'jas@yopmail.com'],

]);

// Insert the event into the primary calendar

$calendarId = 'primary';

$event = $service->events->insert($calendarId, $event, ['sendUpdates' => 'all']);

// Print the event ID

printf('Event created: %s', $event->getId());