我打电话给ebay api，当我发送来自url的请求时一切正常。 当我使用file_get_xml php函数时我没有得到任何东西？
有些人可以告诉我，我能做些什么来解决这个问题？的error_reporting（E_ALL）; //打开所有错误，警告和通知以便于调试
// API request variables
$endpoint = 'http://svcs.ebay.com/services/search/FindingService/v1'; // URL to call
$version = '1.0.0'; // API version supported by your application
$appid = 'APPID'; // Replace with your own AppID
$globalid = 'EBAY-US'; // Global ID of the eBay site you want to search (e.g., EBAY-DE)
$query = 'hair dryers'; // You may want to supply your own query
$safequery = urlencode($query); // Make the query URL-friendly
// Construct the findItemsByKeywords HTTP GET call
$apicall = "$endpoint?";
$apicall .= "OPERATION-NAME=findItemsByKeywords";
$apicall .= "&SERVICE-VERSION=$version";
$apicall .= "&SECURITY-APPNAME=$appid";
$apicall .= "&RESPONSE-DATA-FORMAT=XML";
$apicall .= "&GLOBAL-ID=$globalid";
$apicall .= "&keywords=$safequery";
$apicall .= "&paginationInput.entriesPerPage=1";
echo $apicall;
// Load the call and capture the document returned by eBay API
$resp = simplexml_load_file($apicall);