Upload File to Amazon S3 with Progress Meter

I need a script that can upload a large file to Amazon S3 with a progress meter. - The script needs to be called from PHP. - The file must not pass through the server memory and go directly to S3. - Show a progress meter for the file upload. - Only one file upload at a time (not multiple files). - When the upload finishes, display a success message. - Provide a config file to load the AWS access code and secret key. If needed, I can supply these. - Access to an Amazon S3 account and bucket. - Domain and test account on a Linux server with PHP 5.