<?php
use Microsoft\Graph\Beta\GraphServiceClient;
use Microsoft\Graph\Beta\Generated\Policies\RoleManagementPolicyAssignments\RoleManagementPolicyAssignmentsRequestBuilderGetRequestConfiguration;
$graphServiceClient = new GraphServiceClient($tokenRequestContext, $scopes);
$requestConfiguration = new RoleManagementPolicyAssignmentsRequestBuilderGetRequestConfiguration();
$queryParameters = RoleManagementPolicyAssignmentsRequestBuilderGetRequestConfiguration::createQueryParameters();
$queryParameters->filter = "scopeId eq '/' and scopeType eq 'DirectoryRole' and roleDefinitionId eq '62e90394-69f5-4237-9190-012177145e10'";
$queryParameters->expand = ["policy(\$expand=rules)"];
$requestConfiguration->queryParameters = $queryParameters;
$result = $graphServiceClient->policies()->roleManagementPolicyAssignments()->get($requestConfiguration)->wait();