RSS-omezení výpisu

<?php
$backends = array("http://servis.idnes.cz/rss.asp?c=technet" => "Titulek");
if (!$backend) {
srand((float) microtime() * 10000000);
$backend = array_rand($backends);
}
$insideitem = false;
$tag = "";
$title = "";
$description = "";
$link = "";
$pubdate = "";
function startElement($parser, $tagName, $attrs) {
global $insideitem, $tag;
if ($insideitem) {$tag = $tagName;}
elseif ($tagName == "ITEM") {$insideitem = true;}
}
function characterData($parser, $data) {
global $insideitem, $tag, $pubdate, $title, $description, $link;
if ($insideitem) {
switch ($tag) {
case "PUBDATE": $pubdate .= $data; break;
case "TITLE": $title .= $data; break;
case "DESCRIPTION": $description .= $data; break;
case "LINK": $link .= $data; break;
}}}
function endElement($parser, $tagName) {
global $insideitem, $tag, $title, $description, $link, $pubdate;
if ($tagName == "ITEM") {
printf("<tr><td class='in' width='150'><div
class=\"centr\"><b><a href='%s'
target='_blank'>%s</a></b></div></td>",trim($link),trim($title));

printf("<td class='in' width='350'>%s</td></tr>\n<tr><td
class='in' colspan='2'><hr></td></tr>\n",trim($description));
$title = $description = $pubdate = $link = $insideitem = false;
}}
$xml_parser = xml_parser_create();
xml_set_element_handler($xml_parser, "startElement",
"endElement");
xml_set_character_data_handler($xml_parser, "characterData");

@$fp = fopen($backend, r);
if(!$fp): echo "Chyba při načítání článků";
else:

while ($data = fread($fp, 4096)) {
xml_parse($xml_parser, $data, feof($fp))
or die(sprintf("XML error: %s at line %d",
xml_error_string(xml_get_error_code($xml_parser)),
xml_get_current_line_number($xml_parser)));
}
fclose($fp);
endif;
xml_parser_free($xml_parser);?>