if($_POST['username'] == $username && $_POST['password'] == $password)

header( 'Location: mainpage.php' );
?>

if($_POST['username'] == $username && $_POST['password'] == $password)

header( 'Location: mainpage.php' );
?>

Hi.. php provide header() for redirection of pages . like

header("location:about_us.php");

about_us.php is the name of page where you want to redirect the user after successful login. Thanks

Yes, you can redirect user to any web page using header function

header('Location: http://www.example.com/');
exit;

Remember that header() must be called before any actual output is sent to browser, either by normal HTML tags, blank lines in a file.

Refrence: http://php.net/manual/en/function.header.php

Hi

Can you please explain your question more in detail so that I can tell you the exact solution.

Thanks