PHP - Simplexml Error

Hi

I am trying to use SimpleXML to populate some form fields from an XML file


This is the SimpleXML code that I am using
Code: [Select]
<?php
$vrm=strtoupper($_POST['veh_reg']);
$file="https://www.cdlvis.com/lookup/getxml?username=username&mode=test&key=key&vrm=".$vrm."";
$dom=new DOMdocument();
$dom->load($file);
$xml=simplexml_import_dom($dom);
var_dump($xml);
?>

The code for the display of the fields is:

Code: [Select]
<form name="vehicle_details" method="post" action="add_vehicle.php">
<table>
<tr>
<td>Registration Number:</td><td><input name="reg_num" type="text" value="<?php echo $xml->result[0]->vrm;?>" readonly="true" /></td></tr>
<tr>
<td>Make:</td><td><input name="make" type="text" value="<?php echo $xml->result[0]->make;?>" readonly="true" /></td></tr>
<tr>
<td>Model:</td><td><input name="model" type="text" value="<?php echo $xml->result[0]->model;?>" readonly="true" /></td></tr>
<tr>
<td>Date of Manufactu </td><td><input name="date_man" type="text" value="<?php echo $xml->result[0]->date_manufactured;?>" readonly="true" /></td></tr>
<tr>
<td>Date of First Registration:</td><td><input name="date_reg" type="text" value="<?php echo $xml->result[0]->first_registered;?>" readonly="true" /></td></tr>
<tr>
<td>Colour:</td><td><input name="colour" type="text" value="<?php echo $xml->result[0]->colour;?>" readonly="true" /></td></tr>
<tr>
<td>Body Style:</td><td><input name="body" type="text" value="<?php echo $xml->result[0]->body;?>" readonly="true" /></td></tr>
<tr>
<td>Number of Doors:</td><td><input name="doors" type="text" value="<?php echo $xml->result[0]->doors;?>" readonly="true" /></td></tr>
<tr>
<td>Engine Size:</td><td><input name="engine_size" type="text" value="<?php echo $xml->result[0]->engine_size;?>" readonly="true" /></td></tr>
<tr>
<td>Fuel Type:</td><td><input name="fuel_type" type="text" value="<?php echo $xml->result[0]->fuel;?>" readonly="true" /></td></tr>
<tr>
<td>Gearbox Type:</td><td><input name="gearbox" type="text" value="<?php echo $xml->result[0]->gearbox_type;?>" readonly="true" /></td></tr>
<tr>
<td>Previous Keepers:</td><td><input name="keepers" type="text" value="<?php echo $xml->result[0]->previous_keepers;?>" readonly="true" /></td></tr>
<tr>
<td>BHP:</td><td><input name="bhp" type="text" value="<?php echo $xml->result[0]->smmt_power_bhp;?>" readonly="true" /></td></tr>
<tr>
<td>Emissions:</td><td><input name="co2" type="text" value="<?php echo $xml->result[0]->smmt_co2;?>" readonly="true" /></td></tr>
<tr>
<td><input name="try_again" type="button" value="Try Again" /></td><td><input name="submit" type="submit" value="Next Stage" /></td></tr>
</table>
</form>

In each of the fields on the form when I run the code is the following error

Notice: Trying to get property of non-object in

I have also done a var_dump of the xml and I get the following

Code: [Select]
object(SimpleXMLElement)#2 (15) { ["@attributes"]=> array(4) { ["id"]=> string(6) "344571" ["generated"]=> string(10) "1300307651" ["mode"]=> string(4) "test" ["account_id"]=> string(3) "165" } ["vrm"]=> string(7) "DC70XSC" ["make"]=> string(7) "RENAULT" ["model"]=> string(23) "SCENIC EXPRESSION 16V A" ["date_manufactured"]=> string(10) "2004-02-20" ["first_registered"]=> string(10) "2004-02-20" ["colour"]=> string(5) "GREEN" ["body"]=> string(3) "MPV" ["doors"]=> string(7) "5 DOORS" ["engine_size"]=> string(4) "1598" ["fuel"]=> string(6) "PETROL" ["gearbox_type"]=> string(19) "TIPTRONIC AUTOMATIC" ["previous_keepers"]=> string(1) "1" ["smmt_power_bhp"]=> string(5) "115.1" ["smmt_co2"]=> object(SimpleXMLElement)#3 (0) { } }

What have I done wrong, any help will be much appreciated.