function array2object($array) {
  if (is_array($array)) {
    $obj = new StdClass();
    foreach ($array as $key => $val){
      $obj->$key = $val;
    }
  }
  else { $obj = $array; }
  return $obj;
}
function object2array($object) {
  if (is_object($object)) {
    foreach ($object as $key => $value) {
      $array[$key] = $value;
    }
  }
  else {
    $array = $object;
  }
  return $array;
}

$array = array('foo' => 'bar','one' => 'two','three' => 'four');
$obj = array2object($array);
print $obj->one; // output's "two"
$arr = object2array($obj);
print $arr['foo']; // output's bar