From: kev dot simpson at gmail dot com
Operating system: Windows XP Home
PHP version: 5.2.9
PHP Bug Type: Class/Object related
Bug description: Method scope demotion allowed from private scope grandparent
Description:
------------
Tested in 5.2.5, 5.2.9-2 and 6.0.0-dev using Apache 5.0.59
When a class uses a private scope on a method, any grandchild class can
demote the scope regardless of what the primary class's immediate child
scope is. Curious if I can exploit this as a feature or if it is indeed a
bug.
Example is in order to help visualize.
Reproduce code:
---------------
<?php
class TestParent
{
private function __construct()
{
}
}
class Child extends TestParent
{
public function __construct() // Ok, parent is private and unviewable,
so not technically overridding
{
printf("%s\n", __CLASS__);
}
}
class GrandChild extends Child
{
protected function __construct() // Override here; scope reduction is
prohibited in PHP
{
parent::__construct();
printf("%s\n", __CLASS__);
}
public static function createInstance()
{
return new self;
}
}
GrandChild::createInstance();
?>
Expected result:
----------------
I expect this to produce a fatal error indicating that 'Access level to
GrandChild::__construct() must be public (as in Child) in ....'
Actual result:
--------------
Child
GrandChild
Returning of object of instance GrandChild.
--
Edit bug report at http://bugs.php.net/?id=48376&edit=1
--
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=48376&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=48376&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=48376&r=trysnapshot60
Fixed in CVS:
http://bugs.php.net/fix.php?id=48376&r=fixedcvs
Fixed in CVS and need be documented:
http://bugs.php.net/fix.php?id=48376&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=48376&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=48376&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=48376&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=48376&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=48376&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=48376&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=48376&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=48376&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=48376&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=48376&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=48376&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=48376&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=48376&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=48376&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=48376&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=48376&r=mysqlcfg
