I believe Google does not index ID's. Don't do this! There are way better ways to go about it. My favorite is using something like this:

http://domain.com/?/todays-news/

I use this code to handle complex $_GET variables. It's splits it all up by the forward slashes and corrects the position if there isn't a slash in front or at the end.

PHP: Select all

$home = "/news/";

if(count($_GET) == 0) {
    header("Location: .?".$home);
    exit();
}

$location = explode("/", key($_GET));

if($location[0] == "")
    array_shift($location);
if($location[count($location) - 1] == "")
    array_pop($location);