我正在使用以下代码通过php连接到salesforcerequire_once('SforcePartnerClient.php');require_once('SforceHeaderOptions.php');require_once('SforceMetadataClient.php');$mySforceConnection=newSforcePartnerClient();$mySforceConnection->createConnection("cniRegistration.wsdl");$loginResult=$mySforceConnection->login("