destruct.php

<?php

class Hoge
{
    public function __construct()
    {
        var_dump(__METHOD__);

        register_shutdown_function(array($this, 'shutdown'));
    }

    public function __destruct()
    {
        var_dump(__METHOD__);
    }

    public function shutdown()
    {
        var_dump(__METHOD__);
    }
}

class Fuga extends Hoge
{
    public function __construct()
    {
        parent::__construct();
        var_dump(__METHOD__);
        throw new Exception();
    }

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

$obj = new Fuga;