Protecting pages

[MacMyDay]

Is there a way in PHP that you can have that box appear where it prompts you for your username and password? I need to make a script which if a box is ticked it puts a password prompt on their pages. So, if anyone could just push me in the direction of the code to do that, it'd be much appreciated.

[pyro]

This is a very simpilistic example, but it may serve to get you started: http://forums.webdeveloper.com/showthread.php?s=&threadid=9950