php.ini confusion


Can I call on some brains a bit clverer than mine, please?

I have created and uploaded a new php.ini file into my root folder, so that users should be able to upload larger izap videos and tidypics, as the hosting package I have limits the uploading.

Changing .htaccess did not have an effect, as the php.ini file on the server was overriding the details.

I have run cron jobs for the new php.ini and when I call for phpinfo.php, the new details are shown.

However, users are still unable to upload large files and when I check the settings for izap or tidypics, the original php.ini details are shown and not those that I updated and can be seen calling for phpinfo.

Can anybody think of what I can do, please?
Many thanks