password protect in php3

hi all,

i'd like to protect a page with a user name and password using php3.

can anyone give me a push in the right direction please?

thankee

this shold do it

<?php
if(!isset($PHP_AUTH_USER)) {
Header("WWW-Authenticate: Basic realm="My Realm"");
Header("HTTP/1.0 401 Unauthorized");
echo "Text to send if user hits Cancel buttonn";
exit;
} else {
echo "Hello $PHP_AUTH_USER.<P>";
echo "You entered $PHP_AUTH_PW as your password.<P>";
}
?>

Just fill out the missing parts..

------------------
regds..
-ulrik-