problem with the Ajax PHP ResponseXML tutorial....nothing getting displayed...
Actually, the reason why nothing is displayed is because you have not instructed PHP to output the data as text/xml, rather it is still outputting it as text/html.
So inclusion of a header like this just before the while loop executes solves the problem...
CODE
header("Content-type:text/xml");
echo "<?xml version='1.0' encoding='ISO-8859-1'?>";
echo "<?xml version='1.0' encoding='ISO-8859-1'?>";