I have placed two textboxes on my html webpage - (1) username and (2) password textbox together with (3) a Login button.
on this site, I will provide users with a unique username and password prior to their login; there will be one username and password only. Hence, I need to:
(a) verify that the name and password is correct otherwise, alert users to correct it or contact the admin
(b) if the username and password was correct - redirect users to a URL page on my website e.g page2
Authentication is not an easy 1,2,3; however the IMHO the easiest way to do authentication using PHP is HTTP authentication. A quick search on Google provided this article