Layout

<?php
if($_SERVER['REQUEST_METHOD'] == 'POST')
{
   $success_page = '';
   $error_page = basename(__FILE__);
   $database = './usersdb.php';
   $crypt_pass = md5($_POST['password']);
   $found = false;
   $logindata = array();
   if(filesize($database) == 0)
   {
      header('Location: '.$error_page);
      exit;
   }
   else
   {
      $items = file($database);
      foreach($items as $line)
      {
         list($username, $password, $email, $fullname, $active) = explode('|', trim($line));
         $logindata[$username] = $password;
         if ($username == $_POST['username'] && $active != "0")
         {
            $found = true;
         }
      }
   }
   if($found == false)
   {
      header('Location: '.$error_page);
      exit;
   }
   if($logindata[$_POST['username']] == $crypt_pass)
   {
      session_start();
      $_SESSION['username'] = $_POST['username'];
      $rememberme = isset($_POST['rememberme']) ? true : false;
      if ($rememberme)
      {
         setcookie('username', $_POST['username'], time() + 3600*24*30);
         setcookie('password', $_POST['password'], time() + 3600*24*30);
      }
      header('Location: '.$success_page);
      exit;
   }
   else
   {
      header('Location: '.$error_page);
      exit;
   }
}
$username = isset($_COOKIE['username']) ? $_COOKIE['username'] : '';
$password = isset($_COOKIE['password']) ? $_COOKIE['password'] : '';
?>