<?php

error_reporting(E_ALL);

if (isset($_GET['go'])) $go = $_GET['go'];
elseif (isset($_POST['go'])) $go = $_POST['go'];
else $go="";

switch ($go) {

//////////////////////////////////////////////////////////////////////////
// form login
default:

    echo "<br><center><form action=\"index.php?go=login_check\" method=\"post\">
        <table border=\"0\" width=\"300\">
            <tr>
                <td>
                    Username:
                </td>
                <td>
                    <input type=\"text\" name=\"name\">
                </td>
            </tr>
            <tr>
                <td>
                    Password:
                </td>
                <td>
                    <input type=\"password\" name=\"pass\">
                </td>
            </tr>
            <tr>
                <td colspan=\"2\">
                    <input type=\"submit\" value=\"Entra\">
                    <input type=\"reset\" value=\"Reset\">
                </td>
            </tr>
        </table>
    </form><center>";

break;


//////////////////////////////////////////////////////////////////////////
// controllo login
case "login_check":

    $user_name="test";
    $password=111;

    if ($_POST['name']==$user_name AND $_POST['pass']==$password) {
        session_start();
        $_SESSION['admin_login'] = true;
        $_SESSION['username'] = $user_name;

        header("Location: index.php?go=ok");
        die();

    } else {
        die("Login errato. <a href=\"index.php?go=login\">Login</a>");
    }

break;


//////////////////////////////////////////////////////////////////////////
// ok
case "ok":

    session_start();

    if ($_SESSION AND $_SESSION['admin_login']) {
        echo "Sei admin: ".$_SESSION['username'];
    } else {
        echo "NON sei admin <a href=\"index.php?go=login\">Login</a>";
    }

    // usare con register_globals = On
    if (!empty($user)) $username=$user;

break;

}

?>