<?php
use Microsoft\Graph\GraphServiceClient;
use Microsoft\Graph\Generated\Contacts\ContactsRequestBuilderGetRequestConfiguration;
$graphServiceClient = new GraphServiceClient($tokenRequestContext, $scopes);
$requestConfiguration = new ContactsRequestBuilderGetRequestConfiguration();
$headers = [
'ConsistencyLevel' => 'eventual',
];
$requestConfiguration->headers = $headers;
$queryParameters = ContactsRequestBuilderGetRequestConfiguration::createQueryParameters();
$queryParameters->search = "\"displayName:wa\"";
$queryParameters->count = true;
$requestConfiguration->queryParameters = $queryParameters;
$result = $graphServiceClient->contacts()->get($requestConfiguration)->wait();