ИМХО, вот быдлокод:
$_SESSION['login'] = mysql_fetch_row(mysql_query("SELECT id FROM `users` WHERE `id` = $id LIMIT 1"))[0]; ИМХО, вот быдлокод:
$_SESSION['login'] = mysql_fetch_row(mysql_query("SELECT id FROM `users` WHERE `id` = $id LIMIT 1"))[0];