<?php
class test1 {
    public function __construct() {
        register_shutdown_function(array($this, 'shutdown')); 
    }
    public function shutdown() { 
        exit(__METHOD__);
    }
}

class test2 extends test1 {
    public function __destruct() { 
       exit (__METHOD__); 
    }
}
new test1;
new test2;
?>
