XML : Send xml data to Server, Receive it and save into variables in php

I send xml data to a remote server(website). Getting response of it. Now I want to save that received values in variables for further use. But I am not able to do so.

Here is the complete code:

  <?php  $xml = '<?xml version="1.0" encoding="UTF-8" ?> <Request> <Source> <RequestorID Client="1921" EMailAddress="XML.ALTECH@TRAVELDEN.COM" Password="PASS" />   <RequestorPreferences Language="en" Currency="GBP" Country="GB">   <RequestMode>SYNCHRONOUS</RequestMode> </RequestorPreferences> </Source>   <RequestDetails> <SearchHotelPriceRequest> <ItemDestination DestinationType="city" DestinationCode="LON" />   <ImmediateConfirmationOnly /> <PeriodOfStay> <CheckInDate>2015-12-08</CheckInDate> <Duration>2</Duration>   </PeriodOfStay>   <IncludeRecommended/> <Rooms>     <Room Code="DB" NumberOfRooms="1"> <ExtraBeds> <Age>5</Age> </ExtraBeds> </Room>   <Room Code="TB" NumberOfCots="2"> <ExtraBeds> <Age>10</Age> </ExtraBeds> </Room>   <Room Code="SB" /> </Rooms> <StarRating MinimumRating="true">3</StarRating>     <OrderBy>pricelowtohigh</OrderBy> <NumberOfReturnedItems>10</NumberOfReturnedItems> </SearchHotelPriceRequest> </RequestDetails> </Request>  ' ;  $url = 'https://interface.demo.gta-travel.com/wbsapi/RequestListenerServlet';     //setting the curl parameters.   $headers = array(      "Content-type: text/xml;charset=\"utf-8\"",      "Accept: text/xml",      "Cache-Control: no-cache",      "Pragma: no-cache",      "SOAPAction: \"run\""   );          try{                $ch = curl_init();              curl_setopt($ch, CURLOPT_URL, $url);              curl_setopt($ch, CURLOPT_POST, 1);              // send xml request to a server              curl_setopt ($ch, CURLOPT_SSL_VERIFYHOST, 0);              curl_setopt ($ch, CURLOPT_SSL_VERIFYPEER, 0);              curl_setopt($ch, CURLOPT_POSTFIELDS,  $xml);              curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);              curl_setopt($ch, CURLOPT_VERBOSE, 0);              curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);              echo $ch;              $data = curl_exec($ch);                echo $data;                  if($data === false){                  $error = curl_error($ch);                  echo $error;                   die('error occured');              }else{                  $newxml=$data;                  echo $data;                  echo '<pre>';                  echo htmlspecialchars(print_r($newxml, true));                  echo '<pre>';                 $dataPOST = trim(file_get_contents($data));              $xmlData = simplexml_load_string($dataPOST);                              echo $xmlData->Response->ResponseDetails->SearchHotelPriceResponse->HotelDetails->Hotel['HasMap'];              }              curl_close($ch);          }catch(Exception  $e){              echo 'Message: ' .$e->getMessage();die("Error");      }  ?>    

Error I am recieveing is "Trying to get property of non-object" at line

  $dataPOST = trim(file_get_contents($data));              $xmlData = simplexml_load_string($dataPOST);                              echo $xmlData->Response->ResponseDetails->SearchHotelPriceResponse->HotelDetails->Hotel['HasMap'];    

Here is output code that i am reciveing from server in xml

  <?xml version="1.0" encoding="UTF-8"?>  <Response ResponseReference="REF_D_010_1921-1001448826920884">      <ResponseDetails Language="en">          <SearchHotelPriceResponse>              <HotelDetails>                      <Hotel HasExtraInfo="true" HasMap="true" HasPictures="true">                          <City Code="LON"><![CDATA[London]]></City>                              <Item Code="KEN8"><![CDATA[Grosvenor Kensington]]></Item>                                  <LocationDetails><Location Code="G1"><![CDATA[Central]]></Location>                                          <Location Code="10"><![CDATA[Kensington]]></Location></LocationDetails>                                      <StarRating>4</StarRating>                                      <HotelRooms>                                          <HotelRoom Code="DB" ExtraBed="true" NumberOfExtraBeds="1" NumberOfRooms="1"/>                                          <HotelRoom Code="TB" ExtraBed="true" NumberOfCots="2" NumberOfExtraBeds="1" NumberOfRooms="1"/>                                          <HotelRoom Code="SB" NumberOfRooms="1"/>                                      </HotelRooms>                      <RoomCategories>                          <RoomCategory Id="001:GRO9:5144:S5063:5758:22498">                              <Description><![CDATA[Standard Triple]]></Description>                              <ItemPrice CommissionPercentage="0.00" Currency="GBP">1272.00</ItemPrice>                              <Confirmation Code="IM">                              <![CDATA[AVAILABLE]]>                              </Confirmation>                                <SharingBedding>false</SharingBedding>                              <Meals>                              <Basis Code="N"><![CDATA[None]]></Basis></Meals>                          </RoomCategory>                        <RoomCategory Id="001:KEN8:5144:S5063:5705:22498">                          <Description><![CDATA[Standard Triple]]></Description>                          <ItemPrice CommissionPercentage="0.00" Currency="GBP">1413.00</ItemPrice>                          <Confirmation Code="IM"><![CDATA[AVAILABLE]]></Confirmation>                          <SharingBedding>false</SharingBedding>                          <Meals><Basis Code="B"><![CDATA[Breakfast]]></Basis>                          <Breakfast Code="F"><![CDATA[Full]]>                          </Breakfast></Meals>                      </RoomCategory>                  </RoomCategories></Hotel>              </HotelDetails>          </SearchHotelPriceResponse>      </ResponseDetails>  </Response>