magic functions

hey folks, hope the day is treating you well. i believe i have solved my chasing the tail problem with registering an object as a session variable. now, i'm having trouble with my database connection. in the object i am registering, one of its variables is a pear db object. the first connection to the page works, any subsequent connection gets the following error > Warning: Supplied argument is not a valid MySQL-Link resource in > DB/mysql.php so, i am wondering how to use __sleep and __wake. there aren't any examples on php.net about this. it mentions something about returning an array of variables to serialize. should i include the db object in this array? anyone have a simple example to start from? any help appreciated, thanks, mike -- mike cullerton