Description:
------------
Hi,

in first instance the code works perfect, I get the results with xslt layout.
But when I place the class mxml in a session, nothing is returned. Besides, the xlst processor does not return any error.

The code is included on top of every webpage.
when calling processXMLData($vXML, $vXSL), $vXML is real xml data, while $vXSL is just an url to the XSL document.

with kind regards
Kris

Reproduce code:
---------------
class mxml {
	var $xh;
	
	function mxml() {
		$this->xh = xslt_create();
	}

	function processXMLData($vXML, $vXSL) {
		$arguments = array('/_xml' => $vXML);		
		$result = xslt_process($this->xh, 'arg:/_xml', $vXSL, NULL, $arguments);

		if ($result)
			return $result;
		else
			return "<h2>no results were returned</h2>";
	}	
	
	function stopXML() {
		xslt_free($this->xh);
	}
}

// called on every page
function startsession() {
global $mxml;

ob_end_clean();
ob_start();
session_start();

if(session_is_registered("mxml"))
	$mxml = &$_SESSION["mxml"];
else {
	$mxml = new mxml();
	session_register("mxml");
}
}

startsession()

Expected result:
----------------
a html table with the rows comming from a MySql database

Actual result:
--------------
no results are returned by the xslt processor, thus no html table..