$id = whatever is between / and /

[jmweb]

I am going to have a url system setup where I want the number between the last two /'s to be taken from the url and given the value of $id.

For instance if someone goes to
www.domain.com/ralph/id/1/
i want $id to = 1

if they go to www.domain.com/ralph/id/1333/
I want $id to = 1333

Any samples on how to set this up? Or can someone provide me with some help on this...

[LordShryku]

I'd probably do a check to make sure that last / is there, if it is, strip it off, then use [man]strrchr[/man]

function getnum($url) {
   if(substr($url,-1) == "/") {
      $url = substr($url,0,-1);
   }
   return substr(strrchr($url,"/"),1);
}

$url = "http://blah.com/blah/123/";
$id = getnum($url);
echo $id;