Hello
How can I rename directories?
I wrote this code:

<?php
rename ("old","new");
?>

And I set the folder permission to "777".
When I open the page, the error shows:
Warning: rename(old,new): Permission denied in /home/onh1/domains/onh1986.com/public_html/eenglish/a.php


Note: I use PHP version 4.4.
What's problem, please?
Thanks & Regards