For me, one of the most difficult things was to get my Magpie RSS (http://magpierss.sourceforge.net/)news feed to display with W3C compliance. I love the magpie RSS parcer (http://magpierss.sourceforge.net/), but the documentation and support was a little difficult. If you want to add RSS content to your website, magpie has to be the best way to go, though. After getting magpie working properly, I was upset to see the results were not W3C compliant. Those damn ampersands... what to do... A little creativity and research, and here we go... I'm sure a better way exists, and would be happy for someone to post it here. ;)
The php coding ended up looking like this in case anyone is interested, or needs the reference. You can see the results on my main page ( www.allinpoker.cc )
<?php
ini_set('display_errors', 0);
define("MAGPIE_OUTPUT_ENCODING", "UTF-8");
require_once("rss_fetch.inc");
$url = $_GET['url'];
$num_items = "10";
$rss = fetch_rss('http://www.allinpoker.cc/directory/rss.php?c=1);
$items = array_slice($rss->items, 0, $num_items);
echo "<ul>";
foreach ($rss->items as $item) {
// This section below replaces ampersands for w3c compliance
$item['link'] = str_replace("&", "&", $item['link']);
$item['link'] = str_replace("&", "&", $item['link']);
$item['link'] = str_replace("&&", "&", $item['link']);
$item['title'] = str_replace("&", "&", $item['title']);
$item['title'] = str_replace("&", "&", $item['title']);
$item['title'] = str_replace("&&", "&", $item['title']);
$item['description'] = str_replace("&", "&", $item['description']);
$item['description'] = str_replace("&", "&", $item['description']);
$item['description'] = str_replace("&&", "&", $item['description']);
$item['pubdate'] = str_replace("&", "&", $item['pubdate']);
$item['pubdate'] = str_replace("&", "&", $item['pubdate']);
$item['pubdate'] = str_replace("&&", "&", $item['pubdate']);
// Define attributes to be displayed
$href = $item['link'];
$title = $item['title'];
$description = $item['description'];
$pubdate = $item['pubdate'];
// Display the processed content
echo "<li><a target=_blank href=\"$href\">$title</a><ul><li>$pubdate</li><li>$description</li></ul></li>";
}
echo "</ul>";
?>