authenticate problem

[yuan]

my code:
<?
Header('WWW-Authenticate: Basic realm="private"');
Header('HTTP/1.0 401 Unauthorized');
?>

why i can't get the pop up and just display internal error 500??
my operating system is win98, is it work on linux only?

[Mordecai]

In order for it to work, you must be using the ISAPI form of PHP. Most likely, you are using the CGI binary, and that is causing the error. I had the same problem, and a quick change through my configuration files made it work.

Consult install.txt bundled with the PHP distro to find out how to install the ISAPI form.