Hello

I am getting this error "The request failed" while product search. My script is like this

<?php

error_reporting(E_ALL);

// The web services request
//$request =  'http://api.search.yahoo.com/ImageSearchService/V1/imageSearch?appid=YahooDemo&query=Madonna&results=4';
$request =  'http://api.shopping.yahoo.com/ShoppingService/v1/productSearch?appid=YahooDemo&query=Madonna&results=4';

// Fetch it
$response = file_get_contents($request);

if ($response === false) {
 die('The request failed');
}

// Create a new DOM object
$dom = new DOMDocument('1.0', 'UTF-8');

// Load the XML into the DOM
if ($dom->loadXML($response) === false) {
    die('Parsing failed');
}

// Now traverse the DOM with this function.
// This traversal function is suitable for the Yahoo! Maps and
// Search web services, and any other Yahoo! Web Services that
// return the number of results as attributes in the root tag and
// have no other attributes in the results. For other Yahoo! Web
// Services, such as Flickr web services, this routine will
// have to be altered.
function xml_to_result($dom) {
 $root = $dom->firstChild;
 foreach($root->attributes as $attr) $res[$attr->name] = $attr->value;
 $node = $root->firstChild;
 $i = 0;
 while($node) {
  switch($node->nodeName) {
   case 'Result':
    $subnode = $node->firstChild;
    while($subnode) {
     $subnodes = $subnode->childNodes;
     foreach($subnodes as $n) {
      if($n->hasChildNodes()) {
       foreach($n->childNodes as $cn) $res[$i][$subnode->nodeName][$n->nodeName]=trim($cn->nodeValue);
      } else $res[$i][$subnode->nodeName]=trim($n->nodeValue);
     }
     $subnode = $subnode->nextSibling;
    }
    break;
   default:
    $res[$node->nodeName] = trim($node->nodeValue);
    $i--;
    break;
  }
  $i++;
  $node = $node->nextSibling;
 }
 return $res;
}

$res = xml_to_result($dom);

echo '<pre>';
print_r($res);
echo '</pre>';

?>

above script works well for 'http://api.search.yahoo.com/ImageSearchService/V1/imageSearch

Please help me to solve this problem