<?php
require_once 'users/init.php';

//the user is logged in
if(isset($user) && $user->isLoggedIn()){
//you can put any column from the users table in the db where username is
echo "Hello ";
echo $user->data()->username;
}else{
//not logged in
?>
<a href="users/login.php">Click Here to Login</a>
<?php
}
?>