Bug #52044 [Bgs]: Access protected method violation
Edit report at http://bugs.php.net/bug.php?id=52044&edit=1
ID: 52044
User updated by: public at proside dot fr
Reported by: public at proside dot fr
Summary: Access protected method violation
Status: Bogus
Type: Bug
Package: Class/Object related
Operating System: WIN XP SP3+
PHP Version: 5.3.2
New Comment:
I almost do agree about your comment, but in my example, $a is a
standalone instance of the parent class. Where $a can be used doesn't
really matter, it's still a standalone instance of class like any
general instance of class. And in the general case the PHP engine
logically prevent the access to the protected methods. Here, it seems
that the context of execution of a standalone object impacts the
contract defined by the OOP rules !
Previous Comments:
------------------------------------------------------------------------
[2010-06-11 10:28:44] degeberg@php.net
Yes, you are wrong. One MyParent object knows the private/protected
interface of all other MyParent objects, so it is allowed to access it.
Other classes don't, so they're not allowed.
Thanks for your interest though.
------------------------------------------------------------------------
[2010-06-11 10:20:25] public at proside dot fr
Description:
------------
In one case, the PHP engine allows access to the protected methods of an
instanciated class
As the documentation says : protected methods are only available inside
the class that declares it and inside the tree of derivated classes. If
you look at the code, we are in none of these case : $a is a standalone
instance of MyParent so the protected methods of class MyParent should
be hidden.
Am i wrong ?
Test script:
---------------
<?php
class MyParent {
protected function getProtectedParent() { return 'Parent_Protected';
}
}
class MyChild extends MyParent {
function getPublicChild() {
# --> new standalone instance of MyParent
$a = new MyParent();
# --> here it's possible to access to the protected method of $a
!
return $a->getProtectedParent();
}
}
$cls = new MyChild();
$test = $cls->getPublicChild();
Expected result:
----------------
Fatal error : access level violation
Actual result:
--------------
$test = 'Parent_Protected'
------------------------------------------------------------------------
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Edit this bug report at http://bugs.php.net/bug.php?id=52044&edit=1
Thread (5 messages)