'your access token', 'refresh_token' => 'your refresh token'); $wrap = new CS_REST_Campaigns('Campaign ID to get lists for', $auth); $result = $wrap->get_lists_and_segments(); echo "Result of GET /api/v3.1/campaigns/{id}/listsandsegments\n
"; if($result->was_successful()) { echo "Got lists and segments\n

";
    var_dump($result->response);
} else {
    echo 'Failed with code '.$result->http_status_code."\n
";
    var_dump($result->response);
}
echo '
';