<?php require_once 'initialize.php'; $userLogin = new LoginOptions(); $userCheck = new UsernameValidator(); $passCheck = new PasswordValidator(); $errorMan = new ErrorManager(); session_start(); $user = ''; $pass = ''; if (isset($_SESSION['username'])) { $userLogin->isLoggedIn(); } if (isset($_POST['username'])) { $user = $_POST['username']; } if (isset($_POST['password'])) { $pass = $_POST['password']; } if ($_SERVER['REQUEST_METHOD'] == 'POST') { if ($passCheck->isValid($pass)) { if ($userCheck->isValid($user)) { $_SESSION['username'] = $user; $userLogin->isLoggedIn(); } else { $errorMan->addError($user, 'Invalid Username. Username should be 5 alphabetic characters.'); } } elseif ($userCheck->isValid($user)) { $errorMan->addError($pass, 'Invalid Password. Password should be at least 5 alpha numeric characters.'); } else { $errorMan->addError($user, 'Invalid Username. Username should be 5 alphabetic characters.');