// Workin Server with Client for localhost
// server.php
<?php 
class MyClass {
  public function helloWorld() {
    return 'Hallo Welt '. print_r(func_get_args(), true);
  }
}
try {
$server = new SOAPServer(
NULL,
    array(
'uri' => 'http://localhost/soap/server.php'
)
  );
$server->setClass('MyClass');
$server->handle();
}
catch (SOAPFault $f) {
  print $f->faultstring;
}
?>
// client.php:
<?php
$client = new SoapClient(null, array(
'location' => "http://localhost/soap/server.php",
'uri'      => "http://localhost/soap/server.php",
'trace'    => 1 ));
echo $return = $client->__soapCall("helloWorld",array("world"));
?>
// Hope you like it