<?php
use Microsoft\Graph\Beta\GraphServiceClient;
use Microsoft\Graph\Beta\Generated\Reports\HealthMonitoring\Alerts\Item\AlertItemRequestBuilderGetRequestConfiguration;
$graphServiceClient = new GraphServiceClient($tokenRequestContext, $scopes);
$requestConfiguration = new AlertItemRequestBuilderGetRequestConfiguration();
$queryParameters = AlertItemRequestBuilderGetRequestConfiguration::createQueryParameters();
$queryParameters->select = ["alertType"," state"," createdDateTime"," signals"];
$requestConfiguration->queryParameters = $queryParameters;
$result = $graphServiceClient->reports()->healthMonitoring()->alerts()->byAlertId('alert-id')->get($requestConfiguration)->wait();