ID: 39127
Updated by: [EMAIL PROTECTED]
Reported By: [EMAIL PROTECTED]
Status: Assigned
Bug Type: Scripting Engine problem
Operating System: Irrelevant
PHP Version: 5.2.0RC5
Assigned To: tony2001
New Comment:
Dmitry added a valid point that someone might be relying on the code
below to work:
class a { function a() { var_dump("a::a()");} }
class b extends a {}
class c extends b {
function C() {
B::b(); //or parent::b();
/* ... */
}
}
This made me think that B::b() should be still callable statically (and
be an alias for A::a()), since it's used as constructor.
Updated version of the patch is here:
http://tony2001.phpclub.net/dev/tmp/bug39127_1.diff
Previous Comments:
------------------------------------------------------------------------
[2006-10-12 08:01:38] judas dot iscariote at gmail dot com
This is indeed a misbehaviuor, in whatever case you decide to fix or
not, it must be added to the docs.
"For backwards compatibility, if PHP 5 cannot find a __construct()
function for a given class, it will **search** for the old-style
constructor function, by the name of the class."
docs does not say it will magically add a method named as the **child**
class **to** the child class...
------------------------------------------------------------------------
[2006-10-11 19:00:45] [EMAIL PROTECTED]
>From what I see, the following happens:
1) class_entry of "A" uses method a() as constructor;
2) class "B" doesn't have a constructor;
3) do_inherit_parent_constructor() looks for "__construct" in "A";
4) there is no "__construct" in "A";
5) named constructor a() is added to "B" as b().
5) seems to be wrong to me, here is the patch:
http://tony2001.phpclub.net/dev/tmp/bug39127.diff
With the patch method a() is still callable and used as constructor in
"B", but there would be no method b().
------------------------------------------------------------------------
[2006-10-11 18:59:29] [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
see above
------------------------------------------------------------------------
[2006-10-11 18:59:09] [EMAIL PROTECTED]
expected behavior, b inherits a's constuctor and a::__construct
obviously does not exist
------------------------------------------------------------------------
[2006-10-11 18:05:10] [EMAIL PROTECTED]
Description:
------------
In php's OOP implementation, the "class-name method" fallback used when
a __construct() method fails seems to have strange effects. Non-existant
methods seems to be callable. It only happens if no constructor is
defined in class b.
This can be reproduced in php4.4, 5.1, 5.2-cvs, 6-cvs :
Reproduce code:
---------------
class a { function a($arg='') { echo $arg; } }
class b extends a {}
$b = new b;
$b->b('foo');
$b->__construct('foo');
Expected result:
----------------
Fatal error: Call to undefined method b::b() in ...
Fatal error: Call to undefined method b::__construct() in ...
Actual result:
--------------
foo
Fatal error: Call to undefined method b::__construct()
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=39127&edit=1
