> I want to spider through php files (as I see so far,
> it's only one index.php file) and download all zip
> files.
> 
> My filter string is: -* +mime:text/html
> +mime:application/x-httpd-php +*.zip
> 
> But it doesn't work, I only get a index.html file...
> what's wrong?
You CAN NOT get php or any server side files (sql, cgi, jsp) from the public
side of a web server, only html and related files.  A mirror is not a copy.

So the +mime:...php does nothing

As for what's wrong, we're not mind readers. Try posting the relevant portion
of the log, the beginning of the log, or at least the starting url.