SalesForce API query doesn't show custom fields

Question

I have a custom date field for accounts in SalesForce: LastCheckedDate (API Name: LastCheckedDate__c)

I'm trying to use the SalesForce Enterprise API to query accounts based on that field. It returns results, and I can use the custom field in the WHERE part of the query, but I can't get it to actually show me the value of the custom field in the results.

This PHP code should get me the ID, name, and LastCheckedDate of any account that has been checked in 2011:

$query = "SELECT Id,Name,LastCheckedDate__c FROM Account WHERE LastCheckedDate__c > 2011-01-01";
$response = $salesforceConnection->query($query);

foreach ($response->records as $record) {               
    print_r($record);
}

It correctly only returns accounts that have been checked in 2011, but the result doesn't include the value of that custom field:

stdClass Object
(
    [Id] => 0015000000abcdefgh
    [Name] => Bob's Widget Factory
) 

How can I get it to include the LastCheckedDate in the results objects?

Answer 1

Update your wsdl file. So You can not select or update any field that are not in the wsdl file.

Answer 2

Seems like you are having the same problem as is addressed in this question: SalesForce.com: Retrieve custom fields via PHP.

It is related to how you are parsing the returned data.