Description:
------------
When querying as MongoDB collection, the Mongo PHP module returns document 
objects as arrays, not as objects.

Mongo is comprised of collections of BSON objects, which should be stored & 
retrieved as objects, not as arrays.

Even the tutorial (http://www.php.net/manual/en/mongo.tutorial.php) refers to 
these arrays as "objects" or "$obj", which is puzzling.

Test script:
---------------
<?php

$m = new Mongo();

$collection = $m->test->users;

$collection->insert(array('name' => 'John Doe'));

$cursor = $m->test->users->findOne();

var_dump($cursor);

?>

Expected result:
----------------
stdClass Object
(
    [_id] => MongoId Object
        (
            [$id] => 50818a58d0d2ac397739d963
        )

    [name] => John Doe
)

Actual result:
--------------
Array
(
    [_id] => MongoId Object
        (
            [$id] => 50818a58d0d2ac397739d963
        )

    [name] => John Doe
)