[RESOLVED] __destruct behaviour

[liunx]

I know, this must have been asked a 1000 times before (if not more), but I just cant seem to get it..
The behaviour of this example seems a bit odd to me.

The problem:
I want to use the delete function on __destruct(). Can be done by calling self::delete(). And when it finally gets there, $this->uid doesnt exists any more.
Why ?

abstract class ARO {
protected $uid = null;

protected function __construct() {
}

protected function __destruct() {
self::delete();
}

public function delete() {
// delete from db using $this->uid
}
}

abstract class ARO_USR extends ARO {
public function __construct() {
}

public function __destruct() {
parent::__destruct();
}
}

class user extends ARO_USR {

}not relevant anymore.