#36357 [Asn->Bgs]: $tmp =& $this; is allowed!
| From: | dmitry@php.net | Date: | Mon, 13 Feb 2006 09:31:56 +0000 |
| Subject: | #36357 [Asn->Bgs]: $tmp =& $this; is allowed! | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-93196@lists.php.net to get a copy of this message | ||
ID: 36357
Updated by: dmitry@php.net
Reported By: dams@php.net
-Status: Assigned
+Status: Bogus
Bug Type: Class/Object related
Operating System: Any
PHP Version: 5.1.2
Assigned To: dmitry
New Comment:
$tmp =& $this is proper code (it can be dangerous, but this doesn't
mean improper).
Removing support for assignment and passing $this by reference will
break a lot of existing PHP scripts.
Previous Comments:
------------------------------------------------------------------------
[2006-02-10 17:05:54] dams@php.net
Description:
------------
Using =&, it is possible to modify $this with the constructor.
This shouldn't be allowed, just like for
$tmp = $this;
Reproduce code:
---------------
<?php
class B {
function B() {
}
}
class A {
function A() {
$tmp =& $this;
var_dump($this); // outputs : object(A)
$tmp = new B();
var_dump($this); // outputs : object(B)
}
}
$a = new A();
var_dump($a); // outputs : object(A)
?>
Expected result:
----------------
object(A)#1 (0) {
}
object(A)#2 (0) {
}
object(A)#1 (0) {
}
// current result :
object(A)#1 (0) {
}
object(B)#2 (0) {
}
object(A)#1 (0) {
}
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=36357&edit=1