I found this good tutorial on creating a login/register system using PhP and MySQL. The forum is around 5 years old (edited last year) but it can still be usefull.
Begin
Nevermind guys I found a different tutorial with video demonstration. Works like a charm. My Page Added the Login/Register system.
Tutorial if anyone needs it. Thanks for answering tho I appreciate it and will +1 them.
Did you echo the $_REQUEST data and checked if they are being grabbed correctly?
<?php
if (!isset($_POST))
register_form();
else
register();
Change switch part with the code above.