Description:
------------
Object comparison differs from PHP 4 to 5.

From docs http://www.php.net/manual/en/language.operators.comparison.php:

Table 15-5. Comparison with Different Types
object
object
Built-in classes can define its own comparison, different classes are uncomparable, same class - compare properties the same way as arrays.

In my machine works as in docs:
andre@macrossv:~/temp$ php -v
PHP 4.3.10-10ubuntu4 (cli) (built: Apr  1 2005 14:16:27)
Copyright (c) 1997-2004 The PHP Group
Zend Engine v1.3.0, Copyright (c) 1998-2004 Zend Technologies

In pythonic friend's machine, no:
~> php -v
PHP 5.0.4 (cli) (built: Jul  7 2005 20:27:16)
Copyright (c) 1997-2004 The PHP Group
Zend Engine v2.0.4-dev, Copyright (c) 1998-2004 Zend Technologies

Reproduce code:
---------------
<?php

class Foo { var $bar = 1; }

$a = new Foo;
$b = new Foo;

//var_dump($a);
//var_dump($b);

echo $a == $b ? "True\n" : "False\n";

echo $a === $b ? "True\n" : "False\n";

?>

Expected result:
----------------
True
True

Actual result:
--------------
True
False