[eluser]smilie[/eluser]
Hi,
I do not get what you want to achieve :-)
Mysql dump will create .sql file on the server itself. Once that is done, you can choose to offer that file to user to download it. Once file downloaded on the users PC, it's stored localy.
Then (later), user goes to your form, selects file to be uploaded (.sql file from above), script uploads the file and executes mysqlimport script - or you create PHP import script which will use uploaded file.
I would not know other solution beside mysql dump - but for sure - there are plenty around there on internet...
Good luck,
Smilie