PHP AuthUser::isAuth示例

<?php

session_start();
header("Content-Type: text/html; charset=utf-8");
include 'AuthClass.php';
$test = new AuthUser();
if (isset($_POST['user_name']) and isset($_POST['user_pass'])) {
    $uname = $_POST['user_name'];
    $upass = $_POST['user_pass'];
    if ($test->connectDB("localhost", "root", "", "orders")) {
        if ($test->auth($uname, $upass)) {
            header('Location: /admin_panel.php');
        } else {
            echo "Неверный логин и/или пароль. Попробуйте еще раз";
        }
    } else {
        echo "Не удалось подключиться";
    }
} elseif ($_GET['logout'] == true) {
    $test->out();
    header('Location: http://test.test');
} else {
    if ($test->isAuth()) {
        header('Location: /admin_panel.php');
    } else {
        $test->printForm();
    }
}