> can any one tell me how to copy a whole website and
> keep it the same without changing the extensions to
> html or temp , and just keep it the same way its ,
> for example    php

You CAN NOT get php, sql, cgi, asp or any other SERVER SIDE code from the
public side of a web server. Only the html output and related files.

Yes you can keep the php extention, but the contents will only be html.