Server-side login prompt box

Question

When I log into my router's firmware, for example, I get a prompt box for the username and password, How is this done? As far as I can tell, JavaScript's prompt() only returns one value.. I know it must be server side because the page continues to "load" until I close the box. I also cannot switch tabs in my browser until the box is closed.

Is it possible to do something like this with PHP? How is this done?

Thanks in advance

Answer 1

its done using Basic HTTP Authentication, for this you need to create a user/password file and tell the server that a folder needs to use the Basic HTTP Authentication. This can be done in the server config or in a .htaccess