#44936 [Ctl->Fbk]: BC break: ini_set() changes 'access' value

From: Date: Mon, 13 Oct 2008 23:04:29 +0000
Subject: #44936 [Ctl->Fbk]: BC break: ini_set() changes 'access' value
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-129675@lists.php.net to get a copy of this message
 ID:               44936
 Updated by:       stas@php.net
 Reported By:      romain dot dorgueil at sensio dot net
-Status:           Critical
+Status:           Feedback
 Bug Type:         *General Issues
 Operating System: linux 2.6.22-14
 PHP Version:      PHP_5_2 only
 Assigned To:      iliaa


Previous Comments:
------------------------------------------------------------------------

[2008-09-08 20:06:18] stas@php.net

Why it is a problem? As far as I can see, there was a change that now
uses some previously unused bits in the access mask, but why it is a
bug? Does something that worked before doesn't work now? 

------------------------------------------------------------------------

[2008-05-26 20:31:31] jani@php.net

Ilia, I think this is the patch that causes the side-effect:

http://cvs.php.net/viewvc.cgi/ZendEngine2/zend_ini.c?r1=1.39.2.2.2.26&r2=1.39.2.2.2.27&pathrev=PHP_5_2

------------------------------------------------------------------------

[2008-05-07 18:11:18] romain dot dorgueil at sensio dot net

Description:
------------
ini_set changes the 'access' parameter of configuration entry to 63
without any reason.

This behaviour did not exist in previous versions and is very easy to
reproduce. It is not documented and not in the php 5.6.3 changelog.

Reproduce code:
---------------
<?php
define('CONFIG_ENTRY', 'magic_quotes_runtime');

function dumpini()
{
  $configs = ini_get_all();
  echo 'access value: '.$configs[CONFIG_ENTRY]['access']."\n";
}

dumpini();

echo 'ini_set(\''.CONFIG_ENTRY.'\', 0);'."\n";
ini_set(CONFIG_ENTRY, 0);

dumpini();


Expected result:
----------------
access value: 7
ini_set('magic_quotes_runtime', 0);
access value: 7


Actual result:
--------------
access value: 7
ini_set('magic_quotes_runtime', 0);
access value: 63



------------------------------------------------------------------------


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