Upload progress bar with PHP5, APC and jQuery

Yesterday I wrote a little tutorial (Italian language, sorry) that explain how to create an info panel while a file is uploaded.

Here You can view final result:


While this is the entire archive with everything You need to test by Yourself my code:
APCQuery

To test them You need PHP 5.2 or greater and APC enabled.
Please verify that rfc is enabled too:

extension=php_apc.dll
apc.rfc1867 = On

If You test them locally please remember to try form using big files (from 40Mb to 200M for fast PCs) changing php.ini upload_max_filesize and post_max_size directives (I suppose 200M is enough).

If someone is interested about an English version of tutorial I'll try to find time to translate them.