<?php
use Microsoft\Graph\GraphServiceClient;
use Microsoft\Graph\Generated\Users\Item\Events\EventsRequestBuilderGetRequestConfiguration;
$graphServiceClient = new GraphServiceClient($tokenRequestContext, $scopes);
$requestConfiguration = new EventsRequestBuilderGetRequestConfiguration();
$headers = [
'Prefer' => 'outlook.timezone="Pacific Standard Time"',
];
$requestConfiguration->headers = $headers;
$queryParameters = EventsRequestBuilderGetRequestConfiguration::createQueryParameters();
$queryParameters->select = ["subject","body","bodyPreview","organizer","attendees","start","end","location"];
$requestConfiguration->queryParameters = $queryParameters;
$result = $graphServiceClient->me()->events()->get($requestConfiguration)->wait();