Hi,
If you look at the documentation for the API Objects, fields that are
valid for the selector are marked Selectable and the description says what
field name to use to select the field:
http://code.google.com/apis/adwords/docs/reference/latest/CampaignService.Campaign.html
We also have a
referencing GetAllCampaigns.php
// Get the CampaignService.
$campaignService = $user-GetCampaignService('v201101');
// Create selector.
$selector = new Selector();
$selector-fields = array('Id', 'Name');
$selector-ordering = array(new OrderBy('Name', 'ASCENDING'));
// Get all
