If you dont want to manually maintain the classmap, make sure you use the same names for your PHP object classes and your WSDL complexTypes, and use the following code:
$classmap = array();
$tmpClient = new SoapClient("soapserver.wsdl");
foreach($tmpClient->__getTypes() as $type)
{
$array = split(" ", $type);
if($array[0] == "struct" && class_exists($array[1]))
{
$classmap[$array[1]] = $array[1];
}
}
unset($tmpClient);
$server = new SoapServer("soapserver.wsdl", array("classmap" => $classmap));
unset($classmap);
$server->setClass("someclass");
$server->handle();