<?php
use Microsoft\Graph\GraphServiceClient;
use Microsoft\Graph\Generated\Teams\Item\Channels\ChannelsRequestBuilderGetRequestConfiguration;
$graphServiceClient = new GraphServiceClient($tokenRequestContext, $scopes);
$requestConfiguration = new ChannelsRequestBuilderGetRequestConfiguration();
$queryParameters = ChannelsRequestBuilderGetRequestConfiguration::createQueryParameters();
$queryParameters->filter = "membershipType eq 'shared'";
$requestConfiguration->queryParameters = $queryParameters;
$result = $graphServiceClient->teams()->byTeamId('team-id')->channels()->get($requestConfiguration)->wait();