Description:
------------
PHP version: 5.3.8-ZS5.5.0

ini_set function returns false if the given directive is named in a host specific 
section. As the result, the directive's value is not changed. This bug is 
reproducible with other similar functions like set_include_path.

Don't forget to restart your webserver before testing since this bug requires 
modifying php.ini file.

Test script:
---------------
Insert the following section into your php.ini file:<br />
<br />
[Zend]<br />
include_path=".;C:\Program Files\Zend\ZendServer\share\ZendFramework\library"<br />
<br />
[HOST=anything.com]<br />
include_path=".;C:\my_library"<br />
<br />
<?php
echo "Executing: ini_set('include_path', 'C:\another_library')<br />\n";
$result = ini_set('include_path', 'C:\another_library');

echo 'ini_set returned: ' . ($result ? 'true' : 'false');
echo "<br />\n";
echo 'And current value for directive is: ' . ini_get('include_path');

Expected result:
----------------
Insert the following section into your php.ini file:<br />
<br />
[Zend]<br />
include_path=".;C:\Program Files\Zend\ZendServer\share\ZendFramework\library"<br 
/>
<br />
[HOST=anything.com]<br />
include_path=".;C:\my_library"<br />
<br />
Executing: ini_set('include_path', 'C:\another_library')<br />
ini_set returned: true<br />
And current value for directive is: .;C:\another_library

Actual result:
--------------
Insert the following section into your php.ini file:<br />
<br />
[Zend]<br />
include_path=".;C:\Program Files\Zend\ZendServer\share\ZendFramework\library"<br 
/>
<br />
[HOST=anything.com]<br />
include_path=".;C:\my_library"<br />
<br />
Executing: ini_set('include_path', 'C:\another_library')<br />
ini_set returned: false<br />
And current value for directive is: .;C:\my_library