<?php
ini_set("soap.wsdl_cache_enabled", 0);
$client = new SoapClient('http://6pp.kvdb.net/services/soap/api.wsdl');
$params = array('postcode'=>'5408XB');
print_r($client->__soapCall('lookup', array('parameters' => $params)));

/*
Bovenstaande 4 regels geven dit resultaat:

stdClass Object
(
    [result] => stdClass Object
    (
        [item] => stdClass Object
        (
            [city] => Hilversum
            [postcode] => 1212AB
            [street] => Oude Amersfoortseweg
        )
    )
)

Om het resultaat bruikbaarder te maken kan het eerst worden omgezet in een
array:
*/

function toArray($obj){
    $return=array();
    if (is_array($obj)) {
        $keys=array_keys($obj);
    } elseif (is_object($obj)) {
        $keys=array_keys(get_object_vars($obj));
    } else {return $obj;}
    foreach ($keys as $key) {
        $value=$obj->$key;
        if (is_array($obj)) {
            $return[$key]=toArray($obj[$key]);
        } else {
            $return[$key]=toArray($obj->$key);
        }
    }
    return $return;
}

$output = $client->__soapCall('lookup', array('parameters' => $params));
$array = toArray($output);
print "Gevonden plaats: " . $array['result']['item']['city'];
?>