Description:
------------
The Author of Bug #41561 wrote:

<quote>
When I set a value inside the httpd.conf with php_admin_value or
php_admin_flag that is INI_ALL or INI_PERDIR it can be overwritten at
runtime using ini_set()

I don't think this should be possible. But the documentation on this
problem doesn't assure me if this is a bug or a feature!
</quote>

Unfortunately, his question was neither discussed nor answered. Also I disagree that is should not be possible re-setting the value of a INI_ALL configuration directive with ini_set().

According to http://www.php.net/manual/en/ini.php PHP_INI_ALL means "Entry can be set anywhere". In my opinion this mutually includes "Entry can be changed anywhere". 

Currently setting e.g. the include_path using ini_set('include_path', ..) or set_include_path(..) will fail when there is a php_admin_value include_path directive in the apache configuration. The include_path is a PHP_INI_ALL directive.



Reproduce code:
---------------
Set in apaches https.conf

  php_admin_value include_path .:/usr/share/php:/server/wide/libs/


and the run 

if (!set_include_path(get_include_path().PATH_SEPARATOR.'local/libs/')) {
	echo 'set_include_path() failed';
} else {
	echo get_include_path();
}


Expected result:
----------------
.:/usr/share/php:/server/wide/libs/:local/libs/

Actual result:
--------------
set_include_path() failed