Arrays, query string and mod_rewrite difficulties - please help! :)

[whitestream6]

I got arrays working first time! :)
This is the website's source code, the file is testing.php.
Source code:

<?php
$data = array('test'=>'testingpage',
              'test1'=>'test1a',
              'cars'=>'mycarpage',
              'php'=>'hypertext processor');

// echo http_build_query($data); // foo=bar&baz=boom&cow=milk&php=hypertext+processor // test
// echo http_build_query($data, '', '&amp;'); // foo=bar&amp;baz=boom&amp;cow=milk&amp;php=hypertext+processor //
 include("http://mywebsite.localhost.com/test.php/"); 

?>

and when typed in the URL becomes: http://mywebsite.localhost.com/testing?test&testingpage which is how it would normally appear in an array.

However, I wish to rewrite the test page to: http://mywebsite.localhost.com/testing/test&testingpage treating testing.php (using mod_rewrite the extension has been removed!) as if it were a directory.

If anyone knows how to do this it would be much appreciated, I have tried many times but have not got anywhere with this!