$client = new SoapClient('http://rep.oio.dk/altforintet_dk/findaddressservice.wsdl');
$client->FindAddressAccess($params)

// complains Call to undefined method soapclient::FindAddressAccess(). 


// If I did the same with nusoap I would do which would work: 

$options = array(
  'trace' => 1,
  'exceptions' => 1
);

$client = new SoapClient($url, $options);
$client->call('FindAddressAccess', $params);