function authentifikation($logid, $logpw)
{
require_once 'xmlrpc.inc';
$client = new xmlrpc_client('backend/identitaeten.php', 'republik-dionysos.de', 80);
$x_logid = new xmlrpcval($logid, "int");
$x_logpw = new xmlrpcval($logpw, "string");
$msg = new xmlrpcmsg('authentifizieren', array($x_logid, $x_logpw));
$result = $client->send($msg);
if (!$result) $ret = array('Erfolg' => false, 'Meldung' => $client->errstr);
elseif (!$result->value()) $ret = array('Erfolg' => false, 'Meldung' => $result->faultString());
else $ret = array('Erfolg' => true, 'Meldung' => php_xmlrpc_decode($result->value()));
return $ret;
}