Edit report at https://bugs.php.net/bug.php?id=40880&edit=1
ID: 40880
Comment by: ekincigokan at gmail dot com
Reported by: prometheus__0 at hotmail dot com
Summary: public->protected inheritance causes fatal
Status: Not a bug
Type: Bug
Package: Class/Object related
Operating System: SUSE SLES 10
PHP Version: 5CVS-2007-03-21 (snap)
Block user comment: N
Private report: N
New Comment:
Same "problem".
class A{
public function __construct(){}
}
class B extends A {
protected function __construct(){}
}
Please, can you tell us a reason why we can't put an private/protected access
to B's constructor if A's constructor is public ?
Is there any logical reason to this ?
Thanks.
Previous Comments:
------------------------------------------------------------------------
[2011-09-10 22:27:24] herman dot wetherington at gmail dot com
Apparently, we don't call this a "bug" because this is not caused by a
programming error. So I'm calling it a "massive design flaw" instead.
------------------------------------------------------------------------
[2010-10-15 23:33:35] robertoblanko at gmail dot com
Same problem here. You cannot actually apply the singleton pattern to
subclasses with this behavior. I do not see any reason for not calling this a
bug.
------------------------------------------------------------------------
[2010-09-07 12:58:35] nickyla83 at yahoo dot fr
I'm in the same situation as our friend "prometheus" here, I am trying to use a
singleton pattern and logically, this should involve being able to encapsulate
the subcalasses information particularly setting up a private constructor for
the singleton subclass, IT DEFINITELY DOES MAKE SENSE, so please try to take
this under consideration for the next php engine release.
------------------------------------------------------------------------
[2007-03-21 10:05:25] prometheus__0 at hotmail dot com
is this the 'php'-dev definition?
i'm asking cause wraping a singleton pattern around a subclass makes sense
and the same example is valid for java and c++
to ask it differently: why is it working this way in php? (i'm interested in
the background of this)
my point is that 2 languages allow it and there is an example which is valid,
not?
------------------------------------------------------------------------
[2007-03-21 09:43:47] [email protected]
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
This is how it works... you can always open up an API through a new extended
interface, but not hide more.
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