[PHP-BUG] Bug #52245 [NEW]: Private member of parent class accessible from child class.
From:
Operating system: Windows 7 x64
PHP version: 5.3.2
Package: *General Issues
Bug Type: Bug
Bug description:Private member of parent class accessible from child class.
Description:
my_private_member;
}
}
class Son extends Father {
private $my_private_member = 'Son private member';
}
//After init Son object, it has both private members, we can see it if we
var_dump($son_instance);
$son_instance = new Son;
//Following manual php.net the output "Son private member" is expected
here, but
the result is "Father private member"
$son_instance->show_private_member();
?>
Test script:
---
my_private_member;
}
}
class Son extends Father {
private $my_private_member = 'Son private member';
}
//After init Son object, it has both private members, we can see it if we
var_dump($son_instance);
$son_instance = new Son;
//Following manual php.net the output "Son private member" is expected
here, but the result is "Father private member"
$son_instance->show_private_member();
?>
Expected result:
Expected "Son private member".
--
Edit bug report at http://bugs.php.net/bug.php?id=52245&edit=1
--
Try a snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=52245&r=trysnapshot52
Try a snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=52245&r=trysnapshot53
Try a snapshot (trunk):
http://bugs.php.net/fix.php?id=52245&r=trysnapshottrunk
Fixed in SVN:
http://bugs.php.net/fix.php?id=52245&r=fixed
Fixed in SVN and need be documented:
http://bugs.php.net/fix.php?id=52245&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=52245&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=52245&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=52245&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=52245&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=52245&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=52245&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=52245&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=52245&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=52245&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=52245&r=php4
Daylight Savings:http://bugs.php.net/fix.php?id=52245&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=52245&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=52245&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=52245&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=52245&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=52245&r=mysqlcfg
Bug #52245 [Opn]: Private member of parent class accessible from child class.
Edit report at http://bugs.php.net/bug.php?id=52245&edit=1
ID: 52245
User updated by: phpamid at gmail dot com
Reported by: phpamid at gmail dot com
Summary: Private member of parent class accessible from child
class.
Status: Open
Type: Bug
Package: *General Issues
Operating System: Windows 7 x64
PHP Version: 5.3.2
New Comment:
.
class Son extends Father{private $x = 'SON';
// try to decomment this:
//public function a(){echo $this->x;}
}
.
I know if I override method a() in the child - everything will be ok,
but it's not necessary to override method a(), because method a() is
inherited form father class and it's public.
p.s. if it's a bug, then it's php behavior.
Previous Comments:
[2010-07-04 13:50:26] giorgio dot liscio at email dot it
i think that is a bug but i'm not sure if is a php behavior
x;}
}
class Son extends Father{private $x = 'SON';
// try to decomment this:
//public function a(){echo $this->x;}
}
$son_instance = new Son;
$son_instance->a();
?>
--------------------
[2010-07-04 13:22:18] phpamid at gmail dot com
Description:
my_private_member;
}
}
class Son extends Father {
private $my_private_member = 'Son private member';
}
//After init Son object, it has both private members, we can see it if
we
var_dump($son_instance);
$son_instance = new Son;
//Following manual php.net the output "Son private member" is expected
here, but
the result is "Father private member"
$son_instance->show_private_member();
?>
Test script:
---
my_private_member;
}
}
class Son extends Father {
private $my_private_member = 'Son private member';
}
//After init Son object, it has both private members, we can see it if
we var_dump($son_instance);
$son_instance = new Son;
//Following manual php.net the output "Son private member" is expected
here, but the result is "Father private member"
$son_instance->show_private_member();
?>
Expected result:
Expected "Son private member".
--
Edit this bug report at http://bugs.php.net/bug.php?id=52245&edit=1
Bug #52245 [Opn]: Private member of parent class accessible from child class.
Edit report at http://bugs.php.net/bug.php?id=52245&edit=1
ID: 52245
User updated by: phpamid at gmail dot com
Reported by: phpamid at gmail dot com
Summary: Private member of parent class accessible from child
class.
Status: Open
Type: Bug
Package: *General Issues
Operating System: Windows 7 x64
PHP Version: 5.3.2
New Comment:
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.
Previous Comments:
[2010-07-04 14:32:12] giorgio dot liscio at email dot it
in fact if you use protected instead of private it works as expected
but the "private" issue should be clarified, i think
* i'm sorry for the second post
[2010-07-04 14:26:04] giorgio dot liscio at email dot it
sure i know i don't need to override the method with the same one in the
new class to fix this problem
in the parent class the field is private... so theoretically i can not
access the member in the derived class
class A
{
private $a = "a";
}
class B extends A
{
private $a = "b"; // is this an error?
}
it probably is, and maybe php should throw an error
--------------------
[2010-07-04 14:00:51] phpamid at gmail dot com
.
class Son extends Father{private $x = 'SON';
// try to decomment this:
//public function a(){echo $this->x;}
}
.
I know if I override method a() in the child - everything will be ok,
but it's not necessary to override method a(), because method a() is
inherited form father class and it's public.
p.s. if it's a bug, then it's php behavior.
[2010-07-04 13:50:26] giorgio dot liscio at email dot it
i think that is a bug but i'm not sure if is a php behavior
x;}
}
class Son extends Father{private $x = 'SON';
// try to decomment this:
//public function a(){echo $this->x;}
}
$son_instance = new Son;
$son_instance->a();
?>
[2010-07-04 13:22:18] phpamid at gmail dot com
Description:
my_private_member;
}
}
class Son extends Father {
private $my_private_member = 'Son private member';
}
//After init Son object, it has both private members, we can see it if
we
var_dump($son_instance);
$son_instance = new Son;
//Following manual php.net the output "Son private member" is expected
here, but
the result is "Father private member"
$son_instance->show_private_member();
?>
Test script:
---
my_private_member;
}
}
class Son extends Father {
private $my_private_member = 'Son private member';
}
//After init Son object, it has both private members, we can see it if
we var_dump($son_instance);
$son_instance = new Son;
//Following manual php.net the output "Son private member" is expected
here, but the result is "Father private member"
$son_instance->show_private_member();
?>
Expected result:
Expected "Son private member".
--
Edit this bug report at http://bugs.php.net/bug.php?id=52245&edit=1
Bug #52245 [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
User updated by: phpamid at gmail dot com
Reported by: phpamid at gmail dot com
Summary: Private member of parent class accessible from child
class.
Status: Bogus
Type: Bug
Package: *General Issues
Operating System: Windows 7 x64
PHP Version: 5.3.2
New Comment:
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.
Previous Comments:
[2010-07-08 13:00:41] johan...@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.
[2010-07-04 14:32:12] giorgio dot liscio at email dot it
in fact if you use protected instead of private it works as expected
but the "private" issue should be clarified, i think
* i'm sorry for the second post
[2010-07-04 14:26:04] giorgio dot liscio at email dot it
sure i know i don't need to override the method with the same one in the
new class to fix this problem
in the parent class the field is private... so theoretically i can not
access the member in the derived class
class A
{
private $a = "a";
}
class B extends A
{
private $a = "b"; // is this an error?
}
it probably is, and maybe php should throw an error
--------------------
[2010-07-04 14:00:51] phpamid at gmail dot com
.
class Son extends Father{private $x = 'SON';
// try to decomment this:
//public function a(){echo $this->x;}
}
.
I know if I override method a() in the child - everything will be ok,
but it's not necessary to override method a(), because method a() is
inherited form father class and it's public.
p.s. if it's a bug, then it's php behavior.
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
Bug #52245 [Bgs->Opn]: Private member of parent class accessible from child class.
Edit report at http://bugs.php.net/bug.php?id=52245&edit=1
ID: 52245
User updated by:phpamid at gmail dot com
Reported by:phpamid at gmail dot com
Summary:Private member of parent class accessible from child
class.
-Status: Bogus
+Status: Open
Type: Bug
Package:*General Issues
Operating System: Windows 7 x64
PHP Version:5.3.2
Block user comment: N
New Comment:
Could you please answer to my questions?
Previous Comments:
[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] johan...@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.
[2010-07-04 14:32:12] giorgio dot liscio at email dot it
in fact if you use protected instead of private it works as expected
but the "private" issue should be clarified, i think
* i'm sorry for the second post
[2010-07-04 14:26:04] giorgio dot liscio at email dot it
sure i know i don't need to override the method with the same one in the
new class to fix this problem
in the parent class the field is private... so theoretically i can not
access the member in the derived class
class A
{
private $a = "a";
}
class B extends A
{
private $a = "b"; // is this an error?
}
it probably is, and maybe php should throw an error
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
