Are there specific PHP libraries or frameworks that facilitate integrating Google Calendar into web applications?

There are several PHP libraries and frameworks that can help integrate Google Calendar into web applications, such as Google API Client Library for PHP, PHP Google Calendar API, and Laravel Google Calendar Package. These libraries provide easy-to-use methods for interacting with the Google Calendar API, handling authentication, and managing events.

// Example using Google API Client Library for PHP
require_once 'vendor/autoload.php';

$client = new Google_Client();
$client->setAuthConfig('credentials.json');
$client->addScope(Google_Service_Calendar::CALENDAR);

$service = new Google_Service_Calendar($client);

// Insert event
$event = new Google_Service_Calendar_Event(array(
  'summary' => 'Google I/O 2022',
  'location' => 'San Francisco, CA',
  'description' => 'A chance to hear more about Google\'s developer products.',
  'start' => array(
    'dateTime' => '2022-05-11T09:00:00-07:00',
    'timeZone' => 'America/Los_Angeles',
  ),
  'end' => array(
    'dateTime' => '2022-05-11T17:00:00-07:00',
    'timeZone' => 'America/Los_Angeles',
  ),
));

$calendarId = 'primary';
$event = $service->events->insert($calendarId, $event);
echo 'Event created: ' . $event->htmlLink;