Unable to connect php and html file

[johnj]

The action in registration page is not connect.php, how are you going to connect.php?

[johnj]

Please make connect.php as a HTML page, like connect.html and make that work from your registration page.
Then, make connect.php as a simple php page, maybe with just an echo statement and make that work from registration page. Then, make your current stuff work with registration page.

[johnmacd]

Write form name where action="___" in form tag.
<form id="RegisterUserForm" action="form name.ext" method="post">