note 57765 deleted from function.is-readable by googleguy

Note Submitter: DrTebi at yahoo dot com ---- Be careful when using is_readable on symbolic links. is_readable will return true if the file the symbolic link is pointing to is readable. The problem is that if the server does NOT allow to follow symbolic links, is_readable will still return true, but e.g. redirecting to the sybolic link will not work. For Apache, make sure that at the server, virtual host configuration level, or inside a directory container you have set Options +FollowSymLinks As an example, let's say you have at the document root directory: index.php -- the script using is_readable my_linked_page.html -- a regular HTML page my_link -- a link pointing to my_linked_page.html Now in index.php: <?php if (is_readable('my_link')) { header('Location: /my_link'); } ?> If FollowSymLinks is forbidden, this will not work, if allowed, it will.