Description:
------------
When trying to use XSLTProcessor::importStyleSheet() with a dynamically generated DOMDocument an error occurs.

The workaround I found is save the DOMDocument for the XSLT in a string a load it again as string.

Test script:
---------------
$xml = new DOMDocument("1.0", "UTF-8");
$root = $xml->createElement("foo");
$root->setAttribute("xmlns", "http://example.com");
$xml->appendChild($root);

$xslt = new DOMDocument("1.0", "UTF-8");
$stylesheet = $xslt->createElement("xsl:stylesheet");
$stylesheet->setAttribute("version", "1.0");
$stylesheet->setAttribute("xmlns:foons", "http://example.com");
$stylesheet->setAttribute("xmlns:xsl", "http://www.w3.org/1999/XSL/Transform");
$xslt->appendChild($stylesheet);

$template = $xslt->createElement("xsl:template");
$template->setAttribute("match", "/");
$template->appendChild($xslt->createTextNode("Hello"));
$stylesheet->appendChild($template);

//workaround: $xslt->loadXML($xslt->saveXML());

$xsltProc = new XSLTProcessor();
$xsltProc->importStyleSheet($xslt);
echo $xsltProc->transformToDoc($xml)->saveXML();


Expected result:
----------------
<?xml version="1.0"?>
Hello


Actual result:
--------------
Warning: XSLTProcessor::importStylesheet() [xsltprocessor.importstylesheet]: compilation error: element xsl:stylesheet in /var/www/xslt/public_html/xslt.php on line 23

Warning: XSLTProcessor::importStylesheet() [xsltprocessor.importstylesheet]: xsltParseStylesheetProcess : document is not a stylesheet in /var/www/xslt/public_html/xslt.php on line 23

Warning: XSLTProcessor::transformToDoc() [xsltprocessor.transformtodoc]: No stylesheet associated to this object in /var/www/xslt/public_html/xslt.php on line 24

Fatal error: Call to a member function saveXML() on a non-object in /var/www/xslt/public_html/xslt.php on line 24