Code:
function characterData($parser, $data) {
global $insideitem, $tag, $title, $description, $link;
if ($insideitem) {
switch ($tag) {
case "TITLE":
$title .= $data;
break;
case "DESCRIPTION":
//$description .= $data;
break;
case "LINK":
$link .= $data;
break;
I think you might have to add more cases in this switch

case "CONTENT"
$content .= $data

other than that, not entirely sure.