如何按键对多分钟数组进行分块

我有一个xml文件，我正在尝试将其转换为数组，但如果它们是数组，我希望键是索引，如果它们是数组，则只需将键添加到当前数组，或将每个数组拆分为全局变量。下面是一个示例。但是，由此我只能展平数组，我在以下位置提供了更广泛的代码：https://github.com/mithereal/xml-to-struct-go

  class RecursiveRealArrayIterator extends RecursiveArrayIterator
  {
   public function hasChildren()
   {
        $current = $this->current();
        return is_array( $current ) || $current instanceof Traversable;
   }
   }
$xml = '<?xml version="1.0" encoding="utf-8"?>
<GetOrdersRequest xmlns="urn:ebay:apis:eBLBaseComponents">
  <!-- Call-specific Input Fields -->
  <CreateTimeFrom> dateTime </CreateTimeFrom>
  <CreateTimeTo> dateTime </CreateTimeTo>
  <IncludeFinalValueFee> boolean </IncludeFinalValueFee>
  <ListingType> ListingTypeCodeType </ListingType>
  <ModTimeFrom> dateTime </ModTimeFrom>
  <ModTimeTo> dateTime </ModTimeTo>
  <NumberOfDays> int </NumberOfDays>
  <OrderIDArray> OrderIDArrayType
    <OrderID> OrderIDType (string) </OrderID>
    <!-- ... more OrderID values allowed here ... -->
  </OrderIDArray>
  <OrderRole> TradingRoleCodeType </OrderRole>
  <OrderStatus> OrderStatusCodeType </OrderStatus>
  <Pagination> PaginationType
    <EntriesPerPage> int </EntriesPerPage>
    <PageNumber> int </PageNumber>
  </Pagination>
  <SortingOrder> SortOrderCodeType </SortingOrder>
  <!-- Standard Input Fields -->
  <DetailLevel> DetailLevelCodeType </DetailLevel>
  <!-- ... more DetailLevel values allowed here ... -->
  <ErrorLanguage> string </ErrorLanguage>
  <MessageID> string </MessageID>
  <OutputSelector> string </OutputSelector>
  <!-- ... more OutputSelector values allowed here ... -->
  <Version> string </Version>
  <WarningLevel> WarningLevelCodeType </WarningLevel>
</GetOrdersRequest>'
$flat = new RecursiveIteratorIterator(new RecursiveArrayIterator($arr)); return iterator_to_array($it, true);
function XMLToArray($xml)
    {
        $return = false;
        if ($xml instanceof SimpleXMLElement) {
            $children = $xml->children();
            $return = false;
            foreach ($children as $element => $value) {
                if ($value instanceof SimpleXMLElement) {
                    $values = (array)$value->children();
                    if (count($values) > 0) {
                        $return[$element] = $this->XMLToArray($value);
                    } else {
                        if (!isset($return[$element])) {
                            $return[$element] = (string)$value;
                        } else {
                            if (!is_array($return[$element])) {
                                $return[$element] = array($return[$element], (string)$value);
                            } else {
                                $return[$element][] = (string)$value;
                            }
                        }
                    }
                }
            }
        }
        return $return;
    }
class  object(){
var properties
 function newproperty($array, $i)
{
    $this->properties[$i] = $array;
    if (is_array($array)) {
        $i++;
        $this->newproperty($array,$i);
    }

return $array;
}
 function make($array)
{
    $i = 0;
    foreach ($array as $dim) {
        $this->newproperty($dim, $i);
        $i++;
    }
    return $this->properties;
}
}
$structs = obj::make($arr)