I wanted to try to pick up Volume value from the Level1Data node.
Here is the xml:

```
<Response>
  <Content>
    <Level1Data Tick="U" Currency="USD" TickSize="0.0001000000" TickValue="0" AssetClass="Equity" InstrumentState="Open" LastPrice="24.1550" LotSize="10"
      MinPermittedPrice="0" MaxPermittedPrice="0" ClosePrice="24.0300" OpenPrice="24.1500" FirstPrice="24.1500"
      HighPrice="24.7800" LowPrice="24.0000" MaxPrice="24.7800" MinPrice="24.0000" Volume="16238302"
      AskSize="105597" BidSize="97618" AskPrice="24.1600" BidPrice="24.1500" Symbol="BAC.NY"
      MarketTime="12:08:41.356" Message="L1DB"/>
  </Content>
</Response>

```

And then my main script:

```
<?php
$result = file_get_contents("lvl1.xml");
// echo $result;
$xml = new SimpleXMLElement($result);
// $dom = new DOMDocument();
// $dom->loadXML("lvl1.xml");
// $vol = dom->getElementsByTagName('Level1Data');

$vol=$xml->children->children('Level1Data');
$id = $xml["Volume"];
echo $id;

 ?>

```

Nothing gets returned and I am having a hard time reading the php documentation and their examples.
Thank you.