Host name

[r_amits]

hi
anybody tell me, how to get the HOST name.

echo $_SERVER['REMOTE_ADDR'];

by this I can get the IP, But If i want to get the Domain name then what to do, like I want to know "http://www.phpbuilder.com" at run time of scipt,

pls help me out

[olaf]

echo $_SERVER['HTTP_HOST'];