$client=new SoapClient('https://mahohost/api/soap/?wsdl');
$session=$client->login('apiUser', 'apiKey');
$result=$client->call($session, 'customer_group.list');
var_dump($result);
// When the session can be closed$client->endSession($session);
Request Example SOAP V2
$proxy=new SoapClient('https://mahohost/api/v2_soap/?wsdl'); // TODO: change url$sessionId=$proxy->login('apiUser', 'apiKey'); // TODO: change login and pwd if necessary$result=$proxy->customerGroupList($sessionId);
var_dump($result);