ID: 39254
Comment by: judas dot iscariote at gmail dot com
Reported By: benoit dot heinrich at swisscom dot com
Status: Open
Bug Type: Class/Object related
Operating System: Linux
PHP Version: 4.4.4
New Comment:
benoit: is very likely you are on your own now, PHP5 is out since years
and certainly solve your problem, PHP4 active development has ceased
permanently, it is only open to security fixes or severe regresions
that affects large part of the user base.
Previous Comments:
[2006-10-25 14:49:05] [EMAIL PROTECTED]
I really doubt there will be any active development in 4.x branch, for
we're mostly working on 5.x and 6.x at the moment.
[2006-10-25 14:42:31] benoit dot heinrich at swisscom dot com
I tried to find a workaround, and when I tried to use the 'global'
keyword instead of the 'static' then it gives exactly the same
problem.
I'm still searching for a workaround but for now I have nothing.
Cheers,
/Benoit
[2006-10-25 14:11:12] benoit dot heinrich at swisscom dot com
I'm sorry but I'm using php 4.4 and I can't use PHP 5 for a lot of
reasons.
Do you have any fix for php 4.4 ?
Cheers,
/Benoit
[2006-10-25 14:01:12] [EMAIL PROTECTED]
Please try using this CVS snapshot:
http://snaps.php.net/php5.2-latest.tar.gz
For Windows:
http://snaps.php.net/win32/php5.2-win32-latest.zip
[2006-10-25 13:54:06] benoit dot heinrich at swisscom dot com
Description:
Hello all,
I've a script that keep an object into a cache to speed up
performances.
To access the cached instance, I'm using a static method of the class
MyFactory::getInstance();
In that method I need to have a reference on the instance itself
because the attached params also need to have a reference on their
owner.
Case 1 -
If I do $instance = new MyFactory(); in the getInstance() method then
I have this:
$a-code: 2
$a-params[toto]-parent-code: 2
$b-code: 1657232709
$b-params[toto]-parent-code: 1657232709
So the thing here is that the static keyword does not seems to keep a
refcount on the instance when it's created the first time. So each
time you call the getInstance() it creates a new instance instead of
keeping the first created one.
Case 2 -
If I do $instance = new MyFactory(); in the getInstance() method then I
have this:
$a-code: 2
$a-params[toto]-parent-code: 576672258
$b-code: 2
$b-params[toto]-parent-code: 576672258
Here we have the result we can expect accordingly to the PHP4
documentation, but this not what I need.
Please, can you investigate on that one ?
Cheers,
/Benoit
Reproduce code:
---
?php
error_reporting(E_ALL);
/**
* This is an example of a param implementation class.
* The constructor always need a reference on its parent
* (here it's not really needed, but in the real code it is)
*/
class toto
{
var $parent;
function toto($parent)
{
$this-parent = $parent;
}
}
/**
* This the factory class used to create instances of params.
* The factory instance must be unique.
*/
class MyFactory
{
var $code;
var $params = array();
function MyFactory()
{
$this-code = rand();
$this-initParam('toto');
}
/**
* Initialize a parameter
*/
function initParam($param)
{
$this-params[$param] = new $param($this);
}
/**
* Get the unique instance of the factory
*/
function getInstance()
{
static $instance;
// Due to the bug $instance is always null
if (is_null($instance))
$instance = new MyFactory();
return $instance;
}
}
$a = MyFactory::getInstance();
$a-code = 2;
print '$a-code: ' . $a-code . \n;
print '$a-params[toto]-parent-code: ' .
$a-params['toto']-parent-code . \n;
$b = MyFactory::getInstance();
print '$b-code: ' . $b-code . \n;
print '$b-params[toto]-parent-code: ' .
$b-params['toto']-parent-code . \n;
?
Expected result:
$a-code: 2
$a-params[toto]-parent-code: 2
$b-code: 2
$b-params[toto]-parent-code: 2
Actual result:
--
$a-code: 2
$a-params[toto]-parent-code: 2
$b-code: 1657232709
$b-params[toto]-parent-code: 1657232709
--
Edit this bug report at http://bugs.php.net/?id=39254edit=1
