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

you could do a preg_match this would be:

if(preg_match('/www/', $_SERVER['HTTP_HOST']))
{
  echo 'you got www in your adress';
}
else
{
  echo 'you don not have www';
}

you could even do it with .htaccess depending on what you are building the above option would do fine for a simpel detection.

if you pick the option Ferdia gave do the check as following:

$domain = array_shift(explode(".",$_SERVER['HTTP_HOST']));
if(in_array('www', $domain))
{
    echo 'JUP!';
}