Description:
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I have installed PHP (4.4.4) as mod_php for Apache 1.3.37
and I had set in httpd.conf in my VirtualHost section:

php_admin_value open_basedir "/usr/home/user" 
php_admin_value doc_root "/usr/home/user"

Now, I must not have access by PHP to /usr/home, /usr, /

But function file_get_contents() give me full file listing of / directory with small rubbish

Reproduce code:
---------------
<?
echo file_get_contents("/")
?>

Expected result:
----------------
full file listing of / directory with small rubbish

Actual result:
--------------
Warning: file_get_contents() [function.file-get-contents]: open_basedir restriction in effect. File(/) is not within the allowed path(s): (/usr/home/user) in /usr/home/user/www/test.php on line 2