facebook sdk php，默认显示所有字段

Question

有没有办法在每个请求上显示所有字段为默认值，而不指定每个字段？

目前正在执行此列举广告帐户的字段 - 广告：

$fields = array(
'id',
'adset_id',

'date_format',
'creative',
'name',
'status',
'tracking_specs',
'display_sequence',
'execution_options',
'adlabels',
'bid_amount',
'redownload'
    );
$fields_comma = implode(",", $fields);

$account_id = 'act_'.$account_id;
    $config = array();
    $config['app_id'] = FB_APP_ID;
    $config['app_secret'] = FB_APP_SECRET;

    $fb = new Facebook($config);
    $fb->setDefaultAccessToken(FB_USER_TOKEN_X);
    $request = $fb->request('GET', '/'.$account_id.'/ads?fields='.$fields_comma);

    $response = $fb->getClient()->sendRequest($request);