how to always get first parameter after method name?

[eluser]wolffc[/eluser]
[quote author="xwero" date="1232779572"]

Code:

funcion first_parameter()
{
    $CI =& get_instance();
    if($CI->uri->total_rsegments() > 2) // check for more than controller/method segments
    {
       $first_parameter = $CI->uri->segment(3);
       // do whatever you want with it
    }
}

call this in the post_controller_constructor hook.[/quote]

D'oh, I was using segment(3) instead of rsegment(3) I don't even need a function test since i am making the method name required.