SOAP的錯誤：解析WSDL：無法從WSDL「中加載：未能加載外部實體「WSDL」

$params = array (
    "AccountName" => $_POST['comp-name'], 
    "DBA" => $_POST['DBA'], 
    "Comment" => $_POST['comments'] 
); 

$options = array(
     'soap_version'=>SOAP_1_1, 
     'trace'=>1, 
     'exceptions'=>1 
    ); 
    $context = stream_context_create($options); 
try { 
$soap = new 
    SoapClient('https://application.cloud.clickandpledge.com/Signup.svc?wsdl', $options); 
    $soapParams = array('instruction'=>$params);   
    $response = $soap->AccountSignUp($soapParams); 
} 
catch(Exception $e) { 
    die($e->getMessage()); 
} 

var_dump($response);

我會哄上面的代碼片斷使用我的WSDL文件與SOAP連接，我在哪裏得到以下在我的屏幕上的錯誤..SOAP的錯誤：解析WSDL：無法從WSDL「中加載：未能加載外部實體「WSDL」

SOAP的錯誤：解析WSDL：無法從「http://application.cloud.clickandpledge.com/Signup.svc?wsdl=wsdl0」中加載：未能加載外部實體「http://application.cloud.clickandpledge.com/Signup.svc?wsdl=wsdl0」

來源

2017-04-12 krishna