Bug #52245 [Opn->Bgs]: Private member of parent class accessible from child class.

Edit report at http://bugs.php.net/bug.php?id=52245&edit=1 ID: 52245 Updated by: johannes@php.net Reported by: phpamid at gmail dot com Summary: Private member of parent class accessible from child class. -Status: Open +Status: Bogus Type: Bug Package: *General Issues Operating System: Windows 7 x64 PHP Version: 5.3.2 Block user comment: N New Comment: . Previous Comments: ------------------------------------------------------------------------ [2010-07-28 14:23:11] johannes@php.net Private enforces encapsulation, a key element of OOP. The current behavior ensures you can extend the class without an effect on show_private_member() and whatever happens in there. With your change extending the class can hae an effect (by accident) on the method. ------------------------------------------------------------------------ [2010-07-27 09:43:48] phpamid at gmail dot com Could you please answer to my questions? ------------------------------------------------------------------------ [2010-07-14 09:25:32] phpamid at gmail dot com 1) Answer for your question "Are you looking for protected elements?" is "Bug #52245 Private member of parent class accessible from child class." 2) Why you say that show_private_member() belongs to Parent class, if it is inherited by its Child? In addition, I redefined the private member in Child class - then, according to the paradigm of OOP polimoryizm, the method should return a value of Child private member, otherwise all you have said is contrary to OOP, in particular, to polymorphism. ------------------------------------------------------------------------ [2010-07-08 13:00:41] johannes@php.net You are calling show_private_member(). That method belongs to Father and therefore has access to Father's private elements. The method has no access to other class's private elements. Are you looking for protected elements? ------------------------------------------------------------------------ [2010-07-04 15:11:05] phpamid at gmail dot com as for your code: class A { private $a = "a"; } class B extends A { private $a = "b"; // is this an error? } i think every class has own private member, so there is no error. -------------------------------------------------------------------- Ok, I got you. I hope that this issue will be clarified. Thank you for discussion. ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/bug.php?id=52245 -- Edit this bug report at http://bugs.php.net/bug.php?id=52245&edit=1