How to make Unrealizable characters in URL?

Im just wondering

How to make an URL to ignore loading some characters in it like this :

http://example.com?tes开发者_高级运维t=test
"test=test"

the page will be normally loaded but test=test will not because its not realized on the webpage

how to do the same at the starter of the URL?

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EDIT: this assumes you are running apache as your webserver

You need to change your httpd.conf and add a wildcard default server name.

see http://www.webmasterworld.com/forum92/3844.htm