很急手的问题：
[PHP]
<?php
session_start();
$logon = "student";
$StudentNumber = $_POST['user'];
session_register('logon');
session_register('StudentNumber');
?>
[/PHP]
以上代码并不是全部的，我只选了一部分。

Warning: Unknown(): Your script possibly relies on a session side-effect which existed until PHP 4.2.3. Please be advised that the session extension does not consider global variables as a source of data, unless register_globals is enabled. You can disable this functionality and this warning by setting session.bug_compat_42 or session.bug_compat_warn to off, respectively. in Unknown on line 0

php.ini被我改了无数次也不好用，请高手帮忙。
当我重新刷新的时候这条警告就没有了。

php.ini 设置如下：