Prevent direct access to a php include file

Question

I have a php file which I will be using as exclusively as an include. Therefore I would like to throw an error instead of executing it when it\'s accessed directly by typing

Answer 1

The following code is used in the Flatnux CMS (http://flatnux.altervista.org):

if ( strpos(strtolower($_SERVER['SCRIPT_NAME']),strtolower(basename(__FILE__))) )
{
    header("Location: ../../index.php");
    die("...");
}