PHP problem

I uploaded my website to Altersite but the PHP scripts are not running. I have enabled PHP5 using the PHP settings in the control panel.

This is the URL to my site: http://raymondzeng.altervista.org/

This it the PHP code used in the site:
<?php
$current="index.";
include 'header.php';
?>

I have uploaded the header.php file in the same folder as the index.html file.

Any ideas? Please help. Thanks!

Your website seems to work, please provide further details about your issue.

The url of my site is not working, and I do not know why!!
url: http://maistvonline.altervista.org
it only works if I type: http://maistvonline.altervista.org/joomla/
please help me ...
it worked when I created the site but do not know what happened to him now not giving.

If you type: http://maistvonline.altervista.org/ you are redirected to: http://maistvonline.altervista.org/joomla/