How to redirect to specific page if not logged in with .htaccess

Question

I am running apache2 and php5 in my windows PC.

I have protected my directory using .htaccess and.htpasswd. If login information is not set

Answer 1

You can use http authentication in PHP in addition to Apache (via .htaccess). This might give you more control.

From the manual:

if (!isset($_SERVER['PHP_AUTH_USER'])) {
    header('WWW-Authenticate: Basic realm="My Realm"');
    header('HTTP/1.0 401 Unauthorized');
    echo 'Text to send if user hits Cancel button';
    exit;
} else {
    // do the redirect here?
}