PHP Array from incoming XML message

I'm trying to create an array in PHP based on an incoming XML message I receive:

<env:Envelope xmlns:soapenc="http://ift.tt/wEYywg" xmlns:xsd="http://ift.tt/tphNwY" xmlns:env="http://ift.tt/sVJIaE" xmlns:xsi="http://ift.tt/ra1lAU">
<env:Header>
</env:Header>
<env:Body env:encodingStyle="http://ift.tt/wEYywg">
<m:getResultsResponse xmlns:m="http://ift.tt/1sTqYEX">
<result xmlns:n1="java:com.medplus.serviceHub.results.webservice" xsi:type="n1:ResultsResponse">
<HL7Messages soapenc:arrayType="xsd:string[1]">
<string xsi:type="xsd:string">MSH|^~\&amp;|LAB|DAL||59498|20130328152600||ORU^R01|80000000000000189794|D|2.3.1</string>
</HL7Messages>
<isMore xsi:type="xsd:boolean">true</isMore>
<requestId xsi:type="xsd:string">9a46bee50a801e1e0b4734f6470ea5dd</requestId>
</result>
</m:getResultsResponse>
</env:Body>
</env:Envelope>

I set $RAWResponse equal to the incoming response above, but when I then try to use this function it doesn't seem to work:

function objectsIntoArray($arrObjData, $arrSkipIndices = array())
{
    $arrData = array();

    if (is_object($arrObjData)) {
        $arrObjData = get_object_vars($arrObjData);
    }

    if (is_array($arrObjData)) {
        foreach ($arrObjData as $index => $value) {
            if (is_object($value) || is_array($value)) {
                $value = objectsIntoArray($value, $arrSkipIndices);
            }
            if (in_array($index, $arrSkipIndices)) {
                continue;
            }
            $arrData[$index] = $value;
        }
    }
    return $arrData;
}

$xmlObj = simplexml_load_string($RAWResponse);
$arrXml = objectsIntoArray($xmlObj);

print_r($arrXml);

Any ideas?

Thanks!

NCoder