Modifed By Agus Fikri Suyuthi

<?php
session_start();

$user["adm"] = "adm";

if (!isset($_SESSION['logged_in']))
{
    if ($_SERVER['REQUEST_METHOD'] == 'POST')
    {
        if (empty($_POST['username']) || empty($_POST['password']))
        {
            echo '<center><span style="color:red; font-weight: bold">Please fill in all fields!</span></center>';
        }
        elseif ($user[$_POST['username']] != $_POST['password'])
        {
            echo '<span style="color:red; font-weight: bold">Your username/password is wrong!</span>';
        }
        else
        {
            $_SESSION['ingelogd'] = true;
            echo '<span style="color:green; font-weight: bold">You are now logged in!</span>';
        }
    }

}

if (isset($_SESSION['ingelogd'])) {


?> <br /><br />

<html>
<head>
<title> RAHASIA NEGARA </title>
</head>
<body>
<?php
      if(isset($_GET['fikri']) == 'tamvans'){

        @session_start();


@session_destroy();
header("location:tes-baru.php");

      }
      ?>
Welcome , <span style="color:blue; font-weight: bold"><?php echo $user["adm"] ?>    </span> | <a href='?fikri=tamvans'>Mau Logout ?</a><br/><br/>
Ini Hanya contoh , Daftar Pengguna / Siswa :<br />
- Nama Siswa (KELAS)<br />
- Nama Siswa (KELAS)<br />


</body>
</html>
<?php
}

else
    {
        exit('<title>Login Dulu Pea</title><center>You need to log-in to view this page.<br /><br />
        <form method="POST" action=""><p>
        Username:<br />
        <input required type="text" name="username" /><br /><br />
        Password:<br />
        <input required type="password" name="password" /><br /><br />
        <input type="submit" value="Login" /> <input type="reset" value="Empty fields" />
        </form></center>');
    }
?>