Lets say I have a class like this:

Class User {
  var $id
  var $name;
}

And I run a query using PDO in php like so:

$stm = $db->prepare('select * from users where id = :id');
$r = $stm->execute(array(':id' => $id));
$user = $r->fetchObject('User');

If I vardump my user object it has all kinds of other fields in it that I have not defined in the User class. Obviously I could make my query specific so that it only gives me back the fields I need/want. But if I don't want to do that is there any way to make this work the way I want it to?

I like the idea of fetchObject, because it's one line of code to create this object and set member variables for me. I just don't want it to set variables I haven't defined in my class.