Description:
------------
mishmash with casting and gettype


Reproduce code:
---------------
<?
 $v=(string)'';
 print('1. variable casted as string has type: '.gettype($v).'<br>');

 $v=(unicode)'';
 print('2. variable casted as unicode has type: '.gettype($v).'<br>');

 $v=(binary)'';
 print('3. variable casted as binary has type: '.gettype($v).'<br>');
?>

Expected result:
----------------
I suggest:

1. variable casted as string has type: string (OLD PHP 5 behaviour, in PHP 6 for binary operation)
2. variable casted as unicode has type: unicode

or

1. variable casted as string has type: string (for unicode)
2. variable casted as binary has type: binary (OLD PHP 5 behaviour, in PHP 6 for binary operation)

Actual result:
--------------
1. variable casted as string has type: unicode
2. variable casted as unicode has type: unicode
3. variable casted as binary has type: string

---mishmash---
binary -> string -> unicode