<?phprequire_once 'Keeper.php';/* * The repetitive requests to the database... */$query = "SELECT * FROM `users` WHERE `id`=12";$key = md5($query);if (Keeper::exists($key)) { $array = Keeper::get($key);} else { $array = mysql_fetch_assoc(mysql_query($query)); Keeper::set($key, $array);}