Force-Download with php on Amazon S3

Question

I am trying to use http://code.google.com/p/amazon-s3-php-class/ to force-dowload files from AWS S3. I have an mp3 that I want people to \"play\" or \"download.\" By default

Answer 1

This is now possible by overwriting the S3 headers using signed requests.

Request Parameters

There are times when you want to override certain response header values in a GET response. For example, you might override the Content-Disposition response header value in your GET request.

You can override values for a set of response headers using the query parameters listed in the following table.

response-content-type - Sets the Content-Type header of the response response-content-disposition - Sets the Content-Disposition header of the response.

Note

You must sign the request, either using an Authorization header or a pre-signed URL, when using these parameters. They cannot be used with an unsigned (anonymous) request.

So, you would set those headers to:

response-content-disposition: attachment; filename=FILENAME.EXT
response-content-type: application/octet-stream

Found answer here: https://stackoverflow.com/a/5903710/922522