ID: 44848 Comment by: pinochet dot pl at gmail dot com Reported By: nicolas dot grekas+php at gmail dot com Status: Open Bug Type: Scripting Engine problem Operating System: * PHP Version: 5.2CVS-2008-11-03 New Comment:
I have the same behavior on 5.3 version and 1.01.2009 Snap UBUNTU 8.10 Previous Comments: ------------------------------------------------------------------------ [2008-11-03 10:49:21] nicolas dot grekas+php at gmail dot com Doesn't work with windows snaps [2008-Nov-03 08:00:00]. I got exactly the same behavior ------------------------------------------------------------------------ [2008-10-30 17:06:29] j...@php.net Please try using this CVS snapshot: http://snaps.php.net/php5.2-latest.tar.gz For Windows: http://windows.php.net/snapshots/ ------------------------------------------------------------------------ [2008-06-05 08:33:59] jille at hexon dot cx I tried creating a work-around for this. However, this didn't work: So class B is half-existent ? You can not define it, but it also doesn't exists... <?php function __autoload($class) { switch ($class) { case 'A': case 'B': if(class_exists('B', false)) return; class B extends C {}; break; case 'C': class C {}; class A extends B {}; break; } } echo (int) class_exists('A'); ?> ------------------------------------------------------------------------ [2008-04-27 21:22:46] nicolas dot grekas+php at gmail dot com Description: ------------ Hard to explain, see code... I think that PHP should be able to handle this kind of loading scheme. Here is what I thought this code would do : 1. __autoload('A') is called 2. inside this call for A: 2.1 class B is defined, which extends C 2.2 as C is not defined, __autoload('C') is called 2.3 inside this call for C: 2.3.1 class C is defined 2.3.2 (now we have everything needed for class B, haven't we ?) 2.3.3 class A extends B 2.4 we leave the __autoload('C') context 3. we leave the __autoload('A') context The bug is at step 2.3.3 : "class A extends B" triggers an autoload('B'), which should not occurs, as B should be already defined, thanks to 2.3.2... Reproduce code: --------------- <?php function __autoload($class) { switch ($class) { case 'A': case 'B': class B extends C {}; break; case 'C': class C {}; class A extends B {}; break; } } echo (int) class_exists('A'); Expected result: ---------------- 1 Actual result: -------------- Fatal error: Cannot redeclare class B in [...] on line 9 ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=44848&edit=1
