So i hoped you guys could help..
Thanks
Login.php
<?php
include('core/init.inc.php');
$errors = array();
if (isset($_POST['username'], $_POST['password'])){
if (empty($_POST['username'])){
$errors[] = 'The username cannot be empty.';
}
if (empty($_POST['password'])){
$errors[] = 'The pass word cannot be empty.';
}
if (empty($errors) && valid_credentials($_POST['usename'], $_POST['password']) === false){
$errors[] = 'Username / Password was incorrect.';
}
if (empty($errors)){
$_SESSION['username'] = htmlentities($_POST['username']);
header('Location: protected.php');
die();
}
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1. Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd!>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" contect="text/html; charset=utf-8" />
<link rel="stylesheet" type="text/css" href="ext/css/style.css" />
<title>Daily Music</title>
</head>
<body>
<div>
<?php
echo 'Need an account ? <a href="register.php">Register here</a>';
if (empty($errors) === false){
?>
<ul>
<?php
foreach ($errors as $error){
echo "<li>{$error}</li>";
}
?>
</ul>
<?php
}
?>
</div>
<form action="" method="post">
<p>
<label for="username">Username:</label>
<input type="text" name="username" id="username" value="<?php if (isset($_POST['username'])) echo htmlentities($_POST['username']); ?>" />
</p>
<p>
<label for="password">Password:</label>
<input type="password" name="password" id="password" />
</p>
<p>
<input type="submit" value="Login" />
</p>
</form>
</body>
</html>
Register.php
<?php
include('core/init.inc.php');
$errors = array();
if (isset($_POST['username'], $_POST['password'], $_POST['repeat_password'])){
if (empty($_POST['username'])){
$errors[] = 'The username cannot be empty.';
}
if (empty($_POST['password']) || empty($_POST['repeat_password'])){
$errors[] = 'The password cannot be empty.';
}
if ($_POST['password'] !== $_POST['repeat_password']){
$errors[] = 'Password verification failed.';
}
if (user_exists($_POST['username'])){
$errors[] = 'The username you entered is already taken.';
}
if (empty($errors)){
add_user($_POST['username'], $_POST['password']);
$_SESSION['username'] = htmlentities($_POST['username']);
header('Location: protected.php');
die();
}
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1. Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd!>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" contect="text/html; charset=utf-8" />
<title>Daily Music</title>
</head>
<body>
<div>
<?php
if (empty($errors) === false){
?>
<ul>
<?php
foreach ($errors as $error){
echo "<li>{$error}</li>";
}
?>
</ul>
<?php
}
?>
</div>
<form action="" method="post">
<p>
<label for="username">Username:</label>
<input type="text" name="username" id="username" value="<?php if (isset($_POST['username'])) echo htmlentities($_POST['username']); ?>" />
</p>
<p>
<label for="password">Password:</label>
<input type="password" name="password" id="password" />
</p>
<p>
<label for="repeat_password">Repeat Password:</label>
<input type="password" name="repeat_password" id="repeat_password" />
</p>
<p>
<input type="submit" value="Register" />
</p>
</form>
</body>
</html>
Protected.php
<?php include('core/init.inc.php'); ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1. Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd!>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" contect="text/html; charset=utf-8" />
<title>Daily Music</title>
</head>
<body>
<p>
You are logged in as <?php echo $_SESSION['username']; ?>
</p>
<p>
<a href="logout.php">Logout ?</a>
</p>
</body>
</html>
[/code]
Logout.php
[code]
<?php
session_start();
$_SESSION = array();
session_destroy();
header('Location: protected.php');
?>
init.inc.php
<?php
session_start();
$exceptions = array('register', 'login');
$page = substr(end(explode('/',$_SERVER['SCRIPT_NAME'])), 0, -4);
if (in_array($page, $exceptions) === false){
if (isset($_SESSION['username']) === false){
header('Location: login.php');
die();
}
}
mysql_connect('localhost', 'root', '123lol123');
mysql_select_db('login');
$path = dirname(__FILE__);
include("{$path}/inc/user.inc.php");
?>
user.inc.php
<?php
// Checks if the given user name exists in the database.
function user_exists($user){
$user = mysql_real_escape_string($user);
$total = mysql_query("SELECT COUNT(`user_id`) FROM `users` WHERE `user_name` = '{$user}'");
return (mysql_result($total, 0) == `1`) ? true : false;
}
// Checks if the given user name and password combination is valid.
function valid_credentials($user, $pass){
$user = mysql_real_escape_string($user);
$pass = sha1($pass);
$total = mysql_query("SELECT COUNT(`user_id`) FROM `users` WHERE `user_name` = '{$user}' AND `user_password` = '{$pass}'");
return (mysql_result($total, 0) == `1`) ? true : false;
}
// adds a user the the database.
function add_user($user, $pass){
$user = mysql_real_escape_string(htmlentities($user));
$pass = sha1($pass);
mysql_query("INSERT INTO `users` (`user_name`, `user_password`) VALUE ('{$user}', '{$pass}')");
}
?>
That was all the code 
