No unfortunately there is no simple way to do this. First of all you'll HAVE to find a way to upload the file to the server, otherwise your PHP script will not to able to access a file (on your desktop).
If you really want to avoid server side programming, you may want to consider a javascript /hosted solution like FilePicker.io that let's you upload files from your desktop without server-side code, but this still wont' solve your email problem.