Warning: Use of undefined constant username - assumed 'username' (this will throw an Error in a future version of PHP) in E:\Web\htdocs\lib\session.php on line 4

Notice: Undefined index: username in E:\Web\htdocs\lib\session.php on line 4

Warning: Use of undefined constant password - assumed 'password' (this will throw an Error in a future version of PHP) in E:\Web\htdocs\lib\session.php on line 5

Notice: Undefined index: password in E:\Web\htdocs\lib\session.php on line 5