PHP and MySQL Web Development 4th Ed-tqw-_darksiderg

834 Chapter 33 Connecting to Web Services with XML and SOAP
Listing 33.8
Continued
'SearchIndex' => $this->SearchIndex, 'Keywords' => $this->Keywords);
$parameters = array('AWSAccessKeyId' => DEVTAG,
'AssociateTag' => ASSOCIATEID, 'Request'=>array($request));
// perform actual soap query
$result = $soap_proxy->ItemSearch($parameters);
if(isSOAPError($result)) {
return false;
}
$this->totalResults = $result['TotalResults'];
foreach($result['Items']['Item'] as $product) {
$this->products[] = new Product($product);
}
unset($soapclient);
unset($soap_proxy);
} else {
$this->url = "http://ecs.amazonaws.com/onca/xml?".
"Service=".$this->Service.
"&Operation=".$this->Operation.
"&AssociateTag=".$this->AssociateTag.
"&AWSAccessKeyId=".$this->AWSAccessKeyId.
"&ResponseGroup=".$this->ResponseGroup.
"&SearchIndex=".$this->SearchIndex.
"&Keywords=".$this->Keywords;
$this->parseXML();
}
return $this->products;
}
// Parse the XML into Product object(s)
function parseXML() {
// suppress errors because this will fail sometimes
$xml = @simplexml_load_file($this->url);
if(!$xml) {
//try a second time in case just server busy
$xml = @simplexml_load_file($this->url);
if(!$xml) {