<!-- Collection of code snippets by Arne Vajhøj -->
<!-- posted to eksperten.dk, usenet and other places (2002-now) -->
<?php
$file = 'http://www.nationalbanken.dk/_vti_bin/DN/DataService.svc/CurrencyRatesXML?lang=da';
$xml = simplexml_load_file($file);
$element = $xml->xpath('dailyrates/currency[@code="USD"]/@rate');
echo $element[0];
?>