<?php
use Microsoft\Graph\Beta\GraphServiceClient;
use Microsoft\Graph\Beta\Generated\Teams\Item\Channels\Item\AllMembers\Item\ConversationMemberItemRequestBuilderGetRequestConfiguration;
$graphServiceClient = new GraphServiceClient($tokenRequestContext, $scopes);
$requestConfiguration = new ConversationMemberItemRequestBuilderGetRequestConfiguration();
$queryParameters = ConversationMemberItemRequestBuilderGetRequestConfiguration::createQueryParameters();
$queryParameters->select = ["id","displayName","roles"];
$requestConfiguration->queryParameters = $queryParameters;
$result = $graphServiceClient->teams()->byTeamId('team-id')->channels()->byChannelId('channel-id')->allMembers()->byConversationMemberId('conversationMember-id')->get($requestConfiguration)->wait();