yahoo help needed

[smith.james0]

I am trying to get the longitude and latitude from yahooapis using

 

http://query.yahooapis.com/v1/public/yql?q=select%20centroid%20from%20geo.places%20where%20text%3D%22$postcode%2Cuk%22&diagnostics=true

 

where $postcode is a uk postcode, but I get nothing.

 

I know it's something simple but I can't get it to work 

$doc = new DOMDocument();
$doc->load("http://query.yahooapis.com/v1/public/yql?q=select%20centroid%20from%20geo.places%20where%20text%3D%22$postcode%2Cuk%22&diagnostics=true");
$channel = $doc->getElementsByTagName("*");
$info = array();
foreach($channel as $element)
                {
             // Condition
             if($element->localName == "centroid")
			{
				$latlongpostcode['latitude'] = $element->getElementsByTagName("latitude");
				$latlongpostcode['longitude'] = $element->getElementsByTagName("longitude");
				
			}
	
				}
				
				

}
print_r($latlongpostcode);

<?xml version="1.0" encoding="UTF-8"?>
<query xmlns:yahoo="http://www.yahooapis.com/v1/base.rng"
    yahoo:count="1" yahoo:created="2013-05-21T16:19:29Z" yahoo:lang="en-US">
    <diagnostics>
        <publiclyCallable>true</publiclyCallable>
        <url execution-start-time="1" execution-stop-time="135" execution-time="134"><![CDATA[http://where.yahooapis.com/v1/places.q(wa37pq%2C%20uk);start=0;count=10]]></url>
        <user-time>136</user-time>
        <service-time>134</service-time>
        <build-version>36794</build-version>
    </diagnostics> 
    <results>
        <place xmlns="http://where.yahooapis.com/v1/schema.rng">
            <centroid>
                <latitude>53.414478</latitude>
                <longitude>-2.525600</longitude>
            </centroid>
        </place>
    </results>
</query>

Any help would be great full 

James

[smith.james0]

Not sure if it's the best way but I have got it to work 

$postcode = str_replace(' ','',$postcode);

$doc = new DOMDocument();
$doc->load("http://query.yahooapis.com/v1/public/yql?q=select%20centroid%20from%20geo.places%20where%20text%3D%22$postcode%2Cuk%22&diagnostics=true");

$channel = $doc->getElementsByTagName("*");

$info = array();

foreach($channel as $element)
                {
             // Condition
             if($element->localName == "centroid")
			{
				$latlongpostcode['latitude'] = $element->getElementsByTagName('latitude')->item(0)->nodeValue;
				$latlongpostcode['longitude'] = $element->getElementsByTagName('longitude')->item(0)->nodeValue;
				
			}
	
				}			

}

[Barand]

or

$xml = simplexml_load_file("http://query.yahooapis.com/v1/public/yql?q=select%20centroid%20from%20geo.places%20where%20text%3D%22$postcode%2Cuk%22&diagnostics=true");

$location = (array)$xml->results->place->centroid;

/**** RESULT ***************
$location = Array
(
    [latitude] => 54.375240
    [longitude] => -2.594900
)

****************************/

[smith.james0]

Thanks