An alternative way to send variables to functions?

[eluser]KeyStroke[/eluser]
I read in the guide that you can send variables this way:
http://example.com/controller/variable1/variable2

However, in my case, my variables aren't always all needed at the same time, so I'd rather use something like:
http://example.com/controller/?var1=this&var2=that

because it's more flexible.

Is this possible in CodeIgniter? I just need an alternative that allows me to control variables like that.


Your help is much appreciated