Creating Self Extracting PHP Script

Hi, I was wondering do anybody have any infomation on scripts that will **automatically extract **a file towards my customers destination (like to their usb or floppy disk etc…etc…)?
Plus, allowing them to download the file only once **without copying **it to another drive or destination? I have searched the internet day in and out but still have not came across such a script, if any exsist at all. If you have any info on this…can you please share! Thanks