<?php
use Microsoft\Graph\Beta\GraphServiceClient;
use Microsoft\Graph\Beta\Generated\IdentityGovernance\EntitlementManagement\AccessPackageAssignmentRequests\AccessPackageAssignmentRequestsRequestBuilderGetRequestConfiguration;
$graphServiceClient = new GraphServiceClient($tokenRequestContext, $scopes);
$requestConfiguration = new AccessPackageAssignmentRequestsRequestBuilderGetRequestConfiguration();
$queryParameters = AccessPackageAssignmentRequestsRequestBuilderGetRequestConfiguration::createQueryParameters();
$queryParameters->expand = ["requestor(\$expand=connectedOrganization)"];
$queryParameters->filter = "(requestState eq 'PendingApproval')";
$requestConfiguration->queryParameters = $queryParameters;
$result = $graphServiceClient->identityGovernance()->entitlementManagement()->accessPackageAssignmentRequests()->get($requestConfiguration)->wait();