<?php

$transform="soup.xsl";
// $transform="catalogOL.xsl";
// $transform="if.xsl";
$xmlsource="soups.xml";

if (file_exists($xmlsource)) 
{  $xml = simplexml_load_file($xmlsource); }
if (file_exists($transform)) 
{  $xsl = simplexml_load_file($transform); }
if ( $xsl && $xml )
{  $xslt = new XsltProcessor();
   $xslt->importStylesheet($xsl);
   $xslt->setParameter("", 'day', 'Thursday');
   if ($result = $xslt->transformToXML($xml))
   {  echo $result; } 
   else 
   { trigger_error('XSL transformation failed.', E_USER_ERROR);
   } // if
}

// http://www.tonymarston.net/php-mysql/xsl.html#a6
?>