<?php
  $ar = array("one"=>1, "two"=>2, "three"=>array("four"=>4, "five"=>5, "six"=>array("seven"=>7)), "eight"=>8, -100 => 10, NULL => "null");
  $it = new RecursiveArrayIterator($ar);
  $it = new RecursiveIteratorIterator($it);
  foreach($it as $k=>$v)
  {
    echo "$k=>$v\n";
    var_dump($k);
  }
?>
