note 57765 added to function.is-readable

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. ---- Manual Page -- http://www.php.net/manual/en/function.is-readable.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+57765 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+57765&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+57765&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+57765&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+57765&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+57765&report=yes&reason=non-english Delete: already in docs -- http://master.php.net/manage/user-notes.php?action=delete+57765&report=yes&reason=already+in+docs Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+57765&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+57765&report=yes Search -- http://master.php.net/manage/user-notes.php