How to check if page url has www in it or not with PHP?

Question

In PHP, how can I check if the current page has www in the url or not?

E.g if the user is on http://www.example.com/something , how can I find that there\'s www in t

Answer 1

Do you already know the url? Then take this:

Otherwise, take

 strpos($_SERVER['HTTP_HOST'], "www.") === 0