<?php
use Microsoft\Graph\Beta\GraphServiceClient;
use Microsoft\Graph\Beta\Generated\IdentityGovernance\RoleManagementAlerts\AlertConfigurations\AlertConfigurationsRequestBuilderGetRequestConfiguration;
$graphServiceClient = new GraphServiceClient($tokenRequestContext, $scopes);
$requestConfiguration = new AlertConfigurationsRequestBuilderGetRequestConfiguration();
$queryParameters = AlertConfigurationsRequestBuilderGetRequestConfiguration::createQueryParameters();
$queryParameters->filter = "scopeId eq '/' and scopeType eq 'DirectoryRole'";
$queryParameters->expand = ["alertDefinition"];
$requestConfiguration->queryParameters = $queryParameters;
$result = $graphServiceClient->identityGovernance()->roleManagementAlerts()->alertConfigurations()->get($requestConfiguration)->wait();