note 87637 added to function.dirname

The dirname function does not usually return a slash on the end, which might encourage you to create links using code like this: $url = dirname($_SERVER['PHP_SELF']) . '/somepage.php'; However dirname returns a slash if the path you specify is the root, so $url in that case would become '//somepage.php'. If you put that URL as the action on a form, for example, submitting the form will try to go to http://somepage.php. I ran into this when I wrote a site on a url with a path, www.somehost.com/client/somepage.php, where the code above works great, but then wanted to put it on a subdomain, client.somehost.com/somepage.php, where things started breaking. The best solution would be to create a function that generates absolute URLs and use that throughout the site, but creating a safe_dirname function (and an htaccess rewrite to fix double-slashes just in case) fixed the issue for me: <?php function safe_dirname($path) { $dirname = dirname($path); return $dirname == '/' ? '' : $dirname; } ?> ---- Server IP: 209.41.74.194 Probable Submitter: 98.202.131.150 ---- Manual Page -- http://www.php.net/manual/en/function.dirname.php Edit -- https://master.php.net/note/edit/87637 Del: integrated -- https://master.php.net/note/delete/87637/integrated Del: useless -- https://master.php.net/note/delete/87637/useless Del: bad code -- https://master.php.net/note/delete/87637/bad+code Del: spam -- https://master.php.net/note/delete/87637/spam Del: non-english -- https://master.php.net/note/delete/87637/non-english Del: in docs -- https://master.php.net/note/delete/87637/in+docs Del: other reasons-- https://master.php.net/note/delete/87637 Reject -- https://master.php.net/note/reject/87637 Search -- https://master.php.net/manage/user-notes.php