From:
Operating system: Any
PHP version: 5.3.8
Package: *General Issues
Bug Type: Bug
Bug description:$this as byref
Description:
------------
take a look at the following script
<?php
class B {
public $b = 50;
public function whoami () {
var_dump (__CLASS__);
}
}
class A {
public $a = 6;
function thisref () {
var_dump ($this); // A
$this->ref ($this); // exchange $this by a B object
var_dump ($this); // B
var_dump ($this->a); // 6
var_dump ($this->b); // Notice: Undefined property: A::$b
var_dump (isset ($this->a)); // true
var_dump (property_exists ($this, "a")); // false
var_dump (__CLASS__); // A
$this->whoami (); // A
var_dump ($this instanceof self ? "A" : "B"); // B
}
function ref (A &$ref) {
$ref = new B();
}
public function whoami () {
var_dump (__CLASS__);
}
}
$a = new A();
$a->thisref ();
?>
it supplies $this variable as a property to a byref function, then changing
it to a diffrent type.
if gives some strange results
Expected result:
----------------
it should not be possible to supply $this as a byref param
Actual result:
--------------
$this seems to be changed, however any call upon $this seems not, so
properties and methods remain unchanged.
--
Edit bug report at https://bugs.php.net/bug.php?id=60428&edit=1
--
Try a snapshot (PHP 5.4):
https://bugs.php.net/fix.php?id=60428&r=trysnapshot54
Try a snapshot (PHP 5.3):
https://bugs.php.net/fix.php?id=60428&r=trysnapshot53
Try a snapshot (trunk):
https://bugs.php.net/fix.php?id=60428&r=trysnapshottrunk
Fixed in SVN:
https://bugs.php.net/fix.php?id=60428&r=fixed
Fixed in SVN and need be documented:
https://bugs.php.net/fix.php?id=60428&r=needdocs
Fixed in release:
https://bugs.php.net/fix.php?id=60428&r=alreadyfixed
Need backtrace:
https://bugs.php.net/fix.php?id=60428&r=needtrace
Need Reproduce Script:
https://bugs.php.net/fix.php?id=60428&r=needscript
Try newer version:
https://bugs.php.net/fix.php?id=60428&r=oldversion
Not developer issue:
https://bugs.php.net/fix.php?id=60428&r=support
Expected behavior:
https://bugs.php.net/fix.php?id=60428&r=notwrong
Not enough info:
https://bugs.php.net/fix.php?id=60428&r=notenoughinfo
Submitted twice:
https://bugs.php.net/fix.php?id=60428&r=submittedtwice
register_globals:
https://bugs.php.net/fix.php?id=60428&r=globals
PHP 4 support discontinued:
https://bugs.php.net/fix.php?id=60428&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=60428&r=dst
IIS Stability:
https://bugs.php.net/fix.php?id=60428&r=isapi
Install GNU Sed:
https://bugs.php.net/fix.php?id=60428&r=gnused
Floating point limitations:
https://bugs.php.net/fix.php?id=60428&r=float
No Zend Extensions:
https://bugs.php.net/fix.php?id=60428&r=nozend
MySQL Configuration Error:
https://bugs.php.net/fix.php?id=60428&r=mysqlcfg
