Override max_upload_size setting?

[JohnSaunders]

Is it possible to override the max_upload_size setting that is set in the main servers' php.ini? If so, how?

It is currently set to 2 MBs and I would like to change it to 20 MBs.

[QualityWebHosts]

If you're on a shared host, it won't allow you to modify the php.ini
You can create an .htaccess file in the upload handler script directory that contains:

php_value upload_max_filesize 8000000

(example set for 8 megs)