Kode untuk halaman muka, simpan dengan nama index.php :
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>Halaman Administrator</title>
<style type="text/css">
.inner {
margin: 200px auto;
padding: 20px;
width: 240px;
border: 1px solid #333;
bgcolor: grey;
}
</style>
</head>
<body>
<?php
ini_set('display_errors', 1);
define('_VALID', 1);
// include file eksternal
require_once('./authSES.php');
init_login();
validate();
?>
<h3>Simulasi Halaman Admin</h3>
<p>
<a href="?m=logout">Logout</a>
<p>
Menu-menu admin ada di sini
</body>
</html>
kode untuk proses authentifikasi, simpan dengan nama authSES.php:
<?php
session_start();
defined('_VALID') or die('not allowed');
function init_login() {
// Simulasi data account nama dan password
$nama = 'habi';
$pass = 'ahmad';
if (isset($_POST['nama']) && isset($_POST['pass'])) {
$n = trim($_POST['nama']);
$p = trim($_POST['pass']);
if ( ($n === $nama) && ($p === $pass) ) {
// Jika sama, set cookie
$_SESSION['nlogin'] = '$n';
$_SESSION['time'] = 'time()';
// redireksi
?>
<script type="text/javascript">
document.location.href="./";
</script>
<?php
} else {
echo 'Nama/Password Tidak Sesuai';
return false;
}
}
}
function validate() {
if (!isset($_SESSION['nlogin']) || !isset($_SESSION['time']) ) { ?>
<div class="inner">
<form action="" method="post">
<table bgcolor='green' border=0 cellpadding=5>
<tr>
<td>Nama</td>
<td><input type="text" name="nama" /></td>
</tr>
<tr>
<td>Password</td>
<td><input type="password" name="pass" /></td>
</tr>
<tr>
<td></td>
<td><input type="submit" value="LOGIN" /></td>
</tr>
</table>
</form>
</div>
<?php
exit;
}
if (isset($_GET['m']) && $_GET['m'] == 'logout') {
// Hapus cookie
if (isset($_SESSION['nlogin'])) {
unset ($_SESSION ['nlogin']);
$_SESSION [time()] = 'time() - 1';
}
if (isset($_SESSION['time'])) {
unset ($_SESSION ['time']);
$_SESSION ['time'] = 'time() - 1';
}
// redireksi halaman
?>
<script type="text/javascript">
document.location.href="./";
</script>
<?php
}
}
?>
Rabu, 21 April 2010
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