Gzip is not working with dynmaic URL

i am using GZIP for the compression and its working fine but the problem came when the URL's are dynamic (e.g Default/template_css.php?w=310&a开发者_开发知识库mp;h=237&sw=200&ct=fpss-container2). I am using Php .

Thanks

---

Only use gzip when there's this line in the http-header:

Content-Encoding: gzip