<?php
use Microsoft\Graph\Beta\GraphServiceClient;
use Microsoft\Graph\Beta\Generated\Security\Identities\IdentityAccounts\Item\IdentityAccountsItemRequestBuilderGetRequestConfiguration;
$graphServiceClient = new GraphServiceClient($tokenRequestContext, $scopes);
$requestConfiguration = new IdentityAccountsItemRequestBuilderGetRequestConfiguration();
$queryParameters = IdentityAccountsItemRequestBuilderGetRequestConfiguration::createQueryParameters();
$queryParameters->select = ["accounts"];
$requestConfiguration->queryParameters = $queryParameters;
$result = $graphServiceClient->security()->identities()->identityAccounts()->byIdentityAccountsId('identityAccounts-id')->get($requestConfiguration)->wait();