Description:
------------
$this is treated as references, while ($this) not...

$this != ($this) ?? omg :)


Reproduce code:
---------------
error_reporting(E_ALL);

class Bar {
        function onlyByRefPlease(&$foo) {
// ...
        }
        function        someMemberFunc1() {
                $this->onlyByRefPlease($this);
        }
        function        someMemberFunc2() {
                $this->onlyByRefPlease(($this)); // note: 2 Braces!
        }
};

$foo = new Bar();
$foo->someMemberFunc1();
$foo->someMemberFunc2(); // throws error


Expected result:
----------------
/* none */

Actual result:
--------------
Fatal error: Only variables can be passed by reference in /www/v3.evalanche.com/web/php_refbug.php on line 13