Bug #69391 [Nab]: Bug
| From: | rasmus@php.net | Date: | Tue, 07 Apr 2015 07:35:31 +0000 |
| Subject: | Bug #69391 [Nab]: Bug | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-191869@lists.php.net to get a copy of this message | ||
Edit report at https://bugs.php.net/bug.php?id=69391&edit=1
ID: 69391
Updated by: rasmus@php.net
Reported by: testing1932 at gmail dot com
Summary: Bug
Status: Not a bug
Type: Bug
Package: *General Issues
PHP Version: 5.6.7
Block user comment: N
Private report: N
New Comment:
You should read http://php.net/manual/en/language.oop5.visibility.php
carefully.
You are confusing private and protected here. Private properties are not visible to derived classes.
You want to mark it protected if you want it to be visible to a derived class.
Previous Comments:
------------------------------------------------------------------------
[2015-04-07 07:29:01] testing1932 at gmail dot com
Hi,
Please check this code:
class A
{
private $tempVar=10;
function funcA()
{
echo $this->tempVar;
}
}
class B extends A
{
private $tempVar=50;
}
$obj=new B;
$obj->funcA();
So, then why it is not printing 50. It is still printing 10. When we derived a class, parent's
class method(s) become available within the derived class so $this->tempVar should print the
value that has been assigned within the derived class not that value that is in the parent class.
------------------------------------------------------------------------
[2015-04-07 07:16:04] farhan dot shahid001 at gmail dot com
Hi,
Please check this code:
class A
{
private $tempVar=10;
function funcA()
{
echo $this->tempVar;
}
}
class B extends A
{
private $tempVar=50;
}
$obj=new B;
$obj->funcA();
So, then why it is not printing 50. It is still printing 10. When we derived a class, parent's
class method(s) become available within the derived class so $this->tempVar should print the
value that has been assigned within the derived class not that value that is in the parent class.
------------------------------------------------------------------------
[2015-04-07 07:04:20] aharvey@php.net
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to
report
a bug at http://bugs.php.net/how-to-report.php
funcA() is still a method defined on A, so any private properties within A (such as $tempVar) are
accessible to it. This is by design.
------------------------------------------------------------------------
[2015-04-07 06:59:52] testing1932 at gmail dot com
Description:
------------
The private members are accessible within the Derived Classes.
Test script:
---------------
class A
{
private $tempVar=10;
function funcA()
{
$this->tempVar=20;
echo $this->tempVar;
}
}
class B extends A
{
}
$obj=new B;
$obj->funcA();
Expected result:
----------------
It should give an error because the property $tempVar is private and should not be available to
derived classes.
Actual result:
--------------
It is printing the value of $tempVar.
------------------------------------------------------------------------
--
Edit this bug report at https://bugs.php.net/bug.php?id=69391&edit=1