URIs and optional parameters

[eluser]adrian westlake[/eluser]
Hi,

Just starting to write my first commercial application in CI, but have a questions regarding the segment url format as opposed to the traditional query string.

What if I have a function with two optional parameters. In other words each one has a default value if not passed.

Code:

function myFunction($param1 = "default", $param2 = "default"){

}

With the traditional GET method it is fine as it associates the keys and values.

But with the segment method if I passed

Code:

www.mydomain.com/controller/function/param

How would I know if the param was for the first or second optional parameter. In other words I have to pass all parameters for a function to ensure I know which is which. Does that make sense???