What are the best practices for utilizing PHP to interact with CalDAV calendars for automated tasks?

To interact with CalDAV calendars in PHP for automated tasks, it is best to use a library like SabreDAV which provides a robust set of tools for working with CalDAV servers. This library abstracts the complexities of the CalDAV protocol and allows for easy integration with PHP applications.

// Include the SabreDAV library
require 'vendor/autoload.php';

// Create a new CalDAV client
$client = new Sabre\CalDAV\Client([
    'baseUri' => 'https://example.com/calendars/user/',
    'userName' => 'username',
    'password' => 'password'
]);

// Get a list of calendars
$calendars = $client->getCalendarsForUser();

// Loop through each calendar
foreach ($calendars as $calendar) {
    // Do something with each calendar
}