I have a custom object in our Salesforce setup called AgentProducts, when I do a query (code running in php) via the API the only field I can get back is Id;

select Id, User_Id__c from AgentProducts__c

returns a record for every one of the entries in AgentProducts, but only with the Id field;

Array
(
    [0] => stdClass Object
        (
            [Id] => a0350000008xWWKAA2
        )

    [1] => stdClass Object
        (
            [Id] => a0350000008xWWLAA2
        )
etc. 

Even worse, if I filter the query by something like my custom email field, I get back the correct Id for the correct account, but still, no further data;

select Id, User_Id__c from AgentProducts__c where Email__c='xxx@xxxxx.xxx'

returns:

stdClass Object
(
    [Id] => a0350000008xWWMAA2
)

Any ideas?  I've been looking through the online documentation but I can't find anything on custom objects needing special treatment.

I have a custom object in our Salesforce setup called AgentProducts, when I do a query (code running in php) via the API the only field I can get back is Id;

select Id, User_Id__c from AgentProducts__c

returns a record for every one of the entries in AgentProducts, but only with the Id field;

Array
(
    [0] => stdClass Object
        (
            [Id] => a0350000008xWWKAA2
        )

    [1] => stdClass Object
        (
            [Id] => a0350000008xWWLAA2
        )
etc. 

Even worse, if I filter the query by something like my custom email field, I get back the correct Id for the correct account, but still, no further data;

select Id, User_Id__c from AgentProducts__c where Email__c='xxx@xxxxx.xxx'

returns:

stdClass Object
(
    [Id] => a0350000008xWWMAA2
)

Any ideas?  I've been looking through the online documentation but I can't find anything on custom objects needing special treatment.