Programming :: Php Script For Downloading Files?

I want users of my website to be able to download files from it.

When they request a download, I would like them to see a window with the following attributes: ability to choose where downloaded file goes; progress of the download, and estimate of remaining time; a button to cancel the download.

There are hundreds of sites out there that do this, so obviously it's possible, but can it be done from a php script on the server? If not, does anyone know of a script in java(/script)?

I would also like to monitor when a download failed and succeeded, and if the failure was not because the cancel button was pressed, pickup whatever system information is available about the failure cause.