Cast Object to Array in object construct

[chocopaste]

This may be impossible, but I thought I'd give it a shot. I'm using PDO to fetch data from the DB, and use the PDO::FETCH_INTO approach to populate an existing Object (think ORM). What I'm wondering is if I can turn an object into an array of objects of the same type while still within the object construct. I tried making my object extend the ArrayObject class, which sort of work, but by doing that I lose all the properties I set in my own class.