How can I get the current web directory from the URL?

Question

If I have a URL that is http://www.example.com/sites/dir/index.html, I would want to extract the word \"sites\". I know I have to use regular expressions but for some reason my

Answer 1

A simple and robust way is:

$currentWebDir = substr(__DIR__, strlen($_SERVER['DOCUMENT_ROOT']));

If you are worried about DIRECTORY_SEPARATORS, you could also do:

$currentWebDir = str_replace('\\', '/', substr(__DIR__, strlen($_SERVER['DOCUMENT_ROOT'])));

Also be aware of mod_rewrite issues mentioned by FrancescoMM