PHP File Include Problem

[fr600]

Well I've been running a script on windows and it was perfect. But now, I've moved to Linux (Suse) and I'm having this problem:

Whenever I click a link like: http://127.0.0.1/index.php?act=search, the link changes but the page doesn't.

In index.php, it is:
if (isset($act) && $act=="search")
{
include("sub/search.php");
exit();
}

Anybody has any idea why is this happening?

[serz]

<?php
$act = $_GET&#91;"act"&#93;;

if &#40;isset&#40;$act&#41; && $act=="search"&#41; &#123;
   include&#40;"sub/search.php"&#41;;
   exit&#40;&#41;;
&#125;
?>

[fr600]

thanks, this solved the problem