Description:
------------
It's actually the same bug as before with __get() not returning any value. __toString() simply crashed when you throw an exception inside.

There is an other problem with __toString(). If you call an other __toString() method from an other object to return it, the value is not considered as a string.

The version I tested on is actually the one from yesterday.

Reproduce code:
---------------
class Foo
{
    function __toString()
    {
        return "Hello World!";
    }
}

class Bar
{
    private $obj;

    function __construct()
    {
        $this->obj = new Foo();
    }

    function __toString()
    {
        return $this->obj->__toString();
    }
}

$o = new Bar();
echo $o;