How to reach to an PHP object array?
I have an object and contents are 

    Braintree_Result_Successful Object
    (
        [success] => 1
        [_returnObjectName:private] => transaction
        [transaction] => Braintree_Transaction Object
            (
                [_attributes] => Array
                    (
                        [id] => grmjyg

Let's say this varialbe is **$result**
I'm trying to reach **id** . I think I could reach it as 

    $result->transcation->_attributes['id']
But I get an error. How can I reach to it?
How to reach to an PHP object array?
===

I have an object and contents are 

    Braintree_Result_Successful Object
    (
        [success] => 1
        [_returnObjectName:private] => transaction
        [transaction] => Braintree_Transaction Object
            (
                [_attributes] => Array
                    (
                        [id] => grmjyg

Let's say this varialbe is **$result**
I'm trying to reach **id** . I think I could reach it as 

    $result->transcation->_attributes['id']
But I get an error. How can I reach to it?