Create breadcrumb from array

Creating breadcrumbs can sometimes be really dificult. Breadcrumbs can be created from array in php using some simple code.
Following code can be used to create breadcrumbs from array, just a beginning though, and can be re-written further to make it
more flexible. Hope it helps someone like me.

 $id = $_GET['id'];
 if ( strlen( $id ) < 1 ) $id = "home";
        //this array contains page lists, with id, title and parent page named as main in here
 $pages = array(
        'home' => array( 'id'=>"home", 'main'=>"my_home", 'title'=>"Home",
                        'url'=>"bcrumb.php?id=home" ),
        'members' => array( 'id'=>"users", 'main'=>"home", 'title'=>"Members",
                        'url'=>"bcrumb.php?id=members" ),
        'sudhir' => array( 'id'=>"jack", 'main'=>"users", 'title'=>"Sudhir",
                        'url'=>"bcrumb.php?id=sudhir" )
        );
        //function to create breadcrumb from array
        function crumbs( $id, $pages ) {
          $bCrumbList = array();
          $pageid = $id;
          while(strlen($pageid) > 0) {
            $bCrumbList[] = $pageid;
            $pageid = $pages[ $pageid ]['main'];
          }
          for($i = count( $bCrumbList ) - 1; $i >= 0; $i-- ) {
            $page = $pages[$bCrumbList[$i]];
            if ($i > 0) {
                echo( "                echo( $page['url'] );
                echo( "\">" );
            }
            echo( $page['title'] );
            if ( $i > 0 ) {
                echo( " | " );
            }
          }
        }
       echo "Crumbs:" .crumbs($id, $pages);
       echo "
";
       echo "Page:".$id;

Instead of using array, data can be loaded from xml file as well in order to create breadcrumbs, using the same function above.