<?php
require_once 'SOAP/Server.php';

$server = new SOAP_Server;

class 
SOAP_Example_Server {
    function 
echoString($inputString)
    {
        return 
$inputString;
    }
}

$soapclass = new SOAP_Example_Server();
$server->addObjectMap($soapclass,'urn:SOAP_Example_Server');
$server->service($HTTP_RAW_POST_DATA);

Client for Example Server

<?php
require_once 'SOAP/Client.php';

$soapclient = new SOAP_Client(
    
'http://localhost/SOAP/example/exampleserver.php');

$result $soapclient->call('echoStringSimple',
                 array(
'inputString' => 'this is a test string'),
                 array(
'namespace' => 'urn:SOAP_Example_Server');
?>