$client = new SoapClient( 
    null, 
    array( 
        'location'   => "http://".$fritzboxIP.":".$fritzboxPort."/upnp/control/wlanconfig2", 
        'uri'        => "urn:dslforum-org:service:WLANConfiguration:2", 
        'noroot'     => True, 
        'login'      => $login, 
        'password'   => $password 
    ) 
); 
//print_r($client); 

$NumberOfHosts = $client->GetTotalAssociations(); 
//print_r($NumberOfHosts); 
for ($i=0;$i<$NumberOfHosts;$i++) 
    { 
    $Host = $client->GetGenericAssociatedDeviceInfo(new SoapParam($i,'NewAssociatedDeviceIndex')); 
    //print_r($Host); 

    $Hosts[] = $Host; 

    }