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<?php
function convertum&#40;$result&#41;&#123;
	$result = trim&#40;ucfirst&#40;$result&#41;&#41;;
	$result = preg_replace&#40;"/&#91;^_\.,&§\/\&#40;\&#41;\&#91;\&#93;=0-9À-ÿA-Za-zäöüßÄÖÜ\-\r\n &#93;/si", "", $result&#41;;
	return $result;
&#125;
class MagpieRSS &#123;
var $parser;
var $current_item = array&#40;&#41;;
var $items   = array&#40;&#41;;
var $channel  = array&#40;&#41;;
var $parent_field = array&#40;'RDF'&#41;;
var $current_field = '';
var $current_namespace = false;
function MagpieRSS &#40;$source&#41; &#123;
 $this->parser = xml_parser_create&#40; &#41;;
 xml_set_object&#40; $this->parser, &$this &#41;;
 xml_set_element_handler&#40;$this->parser, 'start_element', 'end_element'&#41;;
 xml_set_character_data_handler&#40; $this->parser, 'cdata' &#41;; 
 xml_parse&#40; $this->parser, $source &#41;;
 xml_parser_free&#40; $this->parser &#41;;
&#125;
function start_element &#40;$p, $element, &$attrs&#41; &#123;
 $element  = strtolower&#40; $element &#41;;
 $namespace = false;
 if &#40; strpos&#40; $element, '&#58;' &#41; &#41; &#123;
  list&#40;$namespace, $element&#41; = split&#40; '&#58;', $element, 2&#41;; 
 &#125;
 $this->current_field = $element;
 if &#40; $namespace and $namespace != 'rdf' &#41; &#123;
  $this->current_namespace = $namespace;
 &#125;
 if &#40; $element == 'channel' &#41; &#123;
  array_unshift&#40; $this->parent_field, 'channel' &#41;;
 &#125;
 elseif &#40; $element == 'items' &#41; &#123;
  array_unshift&#40; $this->parent_field, 'items' &#41;;
 &#125;
 elseif &#40; $element == 'item' &#41; &#123;
  array_unshift&#40; $this->parent_field, 'item' &#41;;
 &#125;
&#125;
function end_element &#40;$p, $element&#41; &#123;
 $element = strtolower&#40;$element&#41;;
      
 if &#40; $element == 'item' &#41; &#123;  
  $this->items&#91;&#93; = $this->current_item;
  $this->current_item = array&#40;&#41;;
  array_shift&#40; $this->parent_field &#41;;
 &#125;
 elseif &#40; $element == 'channel' or $element == 'items' &#41; &#123;
  array_shift&#40; $this->parent_field &#41;;
 &#125;
 
 $this->current_field = '';
 $this->current_namespace = false;
&#125;
function cdata &#40;$p, $text&#41; &#123;
 if &#40; $this->parent_field&#91;0&#93; == $this->current_field or
   ! $this->current_field &#41; &#123;
  return;
 &#125;
 elseif &#40; $this->parent_field&#91;0&#93; == 'channel'&#41; &#123;
  if &#40; $this->current_namespace &#41; &#123;
   $this->channel&#91; $this->current_namespace &#93;&#91; $this->current_field &#93; .= $text;
  &#125;
  else &#123;
   $this->channel&#91; $this->current_field &#93; .= $text;
  &#125;
 
 &#125;
 elseif &#40; $this->parent_field&#91;0&#93; == 'item' &#41; &#123;
  if &#40; $this->current_namespace &#41; &#123;
   $this->current_item&#91; $this->current_namespace &#93;&#91; $this->current_field &#93; .= $text;
  &#125;
  else &#123;
   $this->current_item&#91; $this->current_field &#93; .= $text;
  &#125;
 &#125;
&#125;
function show_list &#40;&#41; &#123;
 echo "<ol>\n";
 foreach &#40;$this->items as $item&#41; &#123;
  echo "<li>", $this->show_item&#40; $item &#41;;
 &#125;
 echo "</ol>";
&#125;

function show_channel &#40;&#41; &#123;
 echo "channel&#58;<br>";
 echo "<ul>";
 while &#40; list&#40;$key, $value&#41; = each&#40; $this->channel &#41; &#41; &#123;
  echo "<li> $key&#58; $value";
 &#125;
 echo "</ul>";
&#125;
function show_item &#40;$item&#41; &#123;
 echo "item&#58; $item&#91;title&#93;";
 echo "<ul>";
 while &#40; list&#40;$key, $value&#41; = each&#40;$item&#41; &#41; &#123;
  if &#40; is_array&#40;$value&#41; &#41; &#123;
   echo "<br><b>$key</b>";
   echo "<ul>";
   while &#40; list&#40; $ns_key, $ns_value&#41; = each&#40; $value &#41; &#41; &#123;
    echo "<li>$ns_key&#58; $ns_value";
   &#125;
   echo "</ul>";
  &#125;
  else &#123;
   echo "<li> $key&#58; $value";
  &#125;
 &#125;
 echo "</ul>";
&#125;
&#125; # end class RSS
class RSSCache &#123;
var $BASE_CACHE = './cache';
function RSSCache &#40;$base&#41; &#123;
 if &#40; $base &#41; &#123;
  $this->BASE_CACHE = $base;
 &#125;
 if &#40; ! file_exists&#40; $this->BASE_CACHE &#41; &#41; &#123;
  mkdir&#40; $this->BASE_CACHE, 0755 &#41;;
 &#125;
&#125;
function set &#40;$url, $rss&#41; &#123;
 $cache_file = $this->file_name&#40; $url &#41;;
 $fp = @fopen&#40; $cache_file, 'w' &#41;;
 if &#40; ! $fp &#41; &#123;
  return 
   array&#40;0, "Unable to open cache file for writing&#58; $cache_file"&#41;;
 &#125;
 $data = $this->serialize&#40; $rss &#41;;
 fwrite&#40; $fp, $data &#41;;
 fclose&#40; $fp &#41;;
 return array&#40;1, $cache_file&#41;;
&#125;
function get &#40;$url&#41; &#123;
 $cache_file = $this->file_name&#40; $url &#41;;
 if &#40; ! file_exists&#40; $cache_file &#41; &#41; &#123;
  return array&#40;0, '', "Cache file does not exists&#58; $cache_file"&#41;;
 &#125;
 $fp = @fopen&#40;$cache_file, 'r'&#41;;
 if &#40; ! $fp &#41; &#123;
  return array&#40;0, '', 
      "Failed to open cache file for reading&#58; $cache_file"&#41;;
 &#125;
 $data = fread&#40; $fp, filesize&#40;$cache_file&#41; &#41;;
 $rss = $this->unserialize&#40; $data &#41;;
 return array&#40;1, $rss, 'cache.success'&#41;;
&#125;
function check_cache &#40; $url &#41; &#123;
 $filename = $this->file_name&#40; $url &#41;;
 if &#40; file_exists&#40; $filename &#41; &#41; &#123;
  $mtime = filemtime&#40; $filename &#41;;
  return array&#40;1, $filename, $mtime&#41;;
 &#125;
 return array&#40;0&#41;;
&#125;
function serialize &#40; $rss &#41; &#123;
 return serialize&#40; $rss &#41;;
&#125;
function unserialize &#40; $data &#41; &#123;
 return unserialize&#40; $data &#41;;
&#125;
function file_name &#40;$url&#41; &#123;
 $filename = md5&#40; $url &#41;;
 return join&#40; '/', array&#40; $this->BASE_CACHE, $filename &#41; &#41;;
&#125;
&#125;
$CACHE_BASE = './cache';
$CACHE_AGE = 60*60; // one hour
function fetch_rss &#40;$url, $options=array&#40;&#41; &#41; &#123;
global $CACHE_BASE, $CACHE_AGE;
if &#40; $options&#91;'cache.no'&#93; &#41; &#123;
 list&#40;$remote_status, $rss, $msg&#41; = fetch_remote_rss&#40; $url &#41;;
 if &#40; $remote_status and $rss &#41; &#123;
  return array&#40;$rss, 1, 'success.remote'&#41;;
 &#125;
 else &#123;
  return array&#40;$msg, 0, 'fail.no_cache'&#41;;
 &#125;
&#125;
else &#123;
 $base = &#40; $options&#91;'cache.base'&#93; &#41; ? $options&#91;'cache.base'&#93; &#58; 
           $CACHE_BASE;
 $cache_age = &#40; $options&#91;'cache.age'&#93; &#41; ? $options&#91;'cache.age'&#93; &#58;
                $CACHE_AGE;
 $cache = new RSSCache&#40; $base &#41;;
 list&#40; $cache_status, $filename, $mtime&#41; = 
          $cache->check_cache&#40; $url &#41;;
 $age = time&#40;&#41; - $mtime;
 if &#40; $cache_status and $cache_age > $age &#41; &#123;
  list&#40;$status, $rss, $msg&#41; = $cache->get&#40; $url &#41;;
  if &#40; $status and $rss &#41; &#123;
   return array&#40;$rss, 1, 'success.cache'&#41;;
  &#125;
 &#125;
 list&#40;$remote_status, $rss, $remote_msg&#41; = fetch_remote_rss&#40; $url &#41;;
 if &#40; $remote_status and $rss &#41; &#123;
  $cache->set&#40; $url, $rss &#41;;
  return array&#40;$rss, 1, 'success.remote'&#41;;
 &#125;
 if &#40; $cache_status &#41; &#123;
  $rss = $cache->get&#40; $url &#41;;
  if &#40; $rss &#41; &#123;
   return array&#40;$rss, 1, 'success.cache.stale' &#41;;
  &#125;
 &#125;
 return array&#40;$remote_msg, 0, 'fail'&#41;; 
&#125;
&#125;
function fetch_remote_rss &#40;$url&#41; &#123;
list&#40;$status, $data&#41; = fetch_remote_file&#40; $url &#41;;
if &#40; $status &#41; &#123;
 $rss = new MagpieRSS&#40; $data &#41;;
 if &#40; $rss &#41; &#123;
  return array&#40;1, $rss, 'success'&#41;;
 &#125;
 else &#123;
  return array&#40;0, '', "Failed to parse RSS file&#58; $url"&#41;;
 &#125;
&#125;
else &#123;
 return array&#40;0, '', $data&#41;;
&#125;
&#125;
function fetch_remote_file &#40;$url&#41; &#123;
$fp = @fopen&#40;$url, 'r'&#41;;

if &#40; ! $fp &#41; &#123;
 return array&#40;0, "Unable to open remote file&#58; $url"&#41;;
&#125;
while &#40; ! feof&#40;$fp&#41; &#41; &#123;
 $data .= fread&#40; $fp, 1024 &#41;;
&#125;
fclose&#40;$fp&#41;;
return array&#40;1, $data&#41;;
&#125;
$url = $_GET&#91;'url'&#93;;
if &#40; ! $url &#41; &#123;
// $url einfach anpassen
$url = 'http&#58;//www.wcheck.com/weblog/feed/';
&#125;
list&#40; $rss, $status, $msg&#41; = fetch_rss&#40; $url &#41;;
function slashbox &#40;$rss&#41; &#123;
// $trenner einfach anpssen
$trenner='<br/><br/>';
$title = $rss->channel&#91;'title'&#93;;
$category = $rss->channel&#91;'category'&#93;;
$link = $rss->channel&#91;'link'&#93;;
$description = $rss->channel&#91;'description'&#93;;
foreach &#40;$rss->items as $item &#41; &#123;
 	$item&#91;"title"&#93;=convertum&#40;$item&#91;"title"&#93;&#41;;
 	$item&#91;"description"&#93;=convertum&#40;$item&#91;"description"&#93;&#41;;
	echo $item&#91;"title"&#93;.' / '.$item&#91;"category"&#93;.$trenner;
	$text = substr&#40;$item&#91;"description"&#93;, 0, strpos&#40;$item&#91;"description"&#93;, ".",50&#41;+1&#41;;
 	echo $text.$trenner;
 	echo $item&#91;"link"&#93;.$trenner;
&#125;  
&#125;
slashbox &#40;$rss&#41;; ?>