Loading XSL in xmlObject ?

[veledrom]

Hi,

This (DOM) display the data stored in XML formatted with a XSL file. Ik works fine.

$xslDoc = new DOMDocument();
   $xslDoc->load("bookstore.xsl");

   $xmlDoc = new DOMDocument();
   $xmlDoc->load("bookstore.xml");

   $proc = new XSLTProcessor();
   $proc->importStylesheet($xslDoc);
   echo $proc->transformToXML($xmlDoc);

I want to do it with (simplexml) with also including XSL. Code below displays but without XSL formated. How can add XSL as well.

Thanks

$xmlObject=simplexml_load_file("bookstore.xml");

foreach ($xmlObject->book as $theBook) {
  $isbn=$theBook->isbn;
  $title=$theBook->title;
  $price=$theBook->price;
  $author=$theBook->author->first_name.$theBook->author->surname;
  $picture=$theBook->coverpic;

  unset($title);
  unset($author);
  unset($publisher);
  unset($city);
  unset($year);
}
?>