Enlever les doublouns suite parse d'un flux xml non modifiable

Bonjour ,

Je souhaite pouvoir parser un flux xml dont je ne peux modifier la source .Il contient des valeurs en doublon et je souhaiterais pouvoir les enlever dans mon résultat.

Je vous met ci-dessous le morceaux de mon fichier ou la modification devrait être opéré sur la valeur $songs si qqun a une astuce car je rame depuis plusieurs jours.

Merci d'avance

Code:

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$mysession = curl_init();
curl_setopt($mysession, CURLOPT_URL, "http://$server/admin.cgi?mode=viewxml");
curl_setopt($mysession, CURLOPT_HEADER, false);
curl_setopt($mysession, CURLOPT_RETURNTRANSFER, true);
curl_setopt($mysession, CURLOPT_POST, false);
curl_setopt($mysession, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
curl_setopt($mysession, CURLOPT_USERPWD, "admin:$password");
curl_setopt($mysession, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($mysession, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);
$xml = curl_exec($mysession);
curl_close($mysession);
$xml = str_replace("&#x27;", "'", $xml);
$result = "";
$listeners = "0";
$maxlisteners = "0";
$songs = "";
$xml_parser = xml_parser_create();
xml_set_element_handler($xml_parser, "startElement", "endElement");
xml_set_character_data_handler($xml_parser, "characterData");
xml_parse($xml_parser, $xml);
xml_parser_free($xml_parser);
$usa = $listeners;
$temp = "";
foreach ($country as $key=>$val) {
   $country = $countries[$key];
   if (strlen($country) > 0) {
      $temp .= ", $country";
      if ($val > 1)
	 $temp .= " ($val)";
      $usa -= $val;
   }
}
$result = "There are currently $listeners out of $maxlisteners listeners from:\n";
$result .= "USA ($usa)$temp";
$result .= $songs;
echo trim($result);
function startElement($parser, $name, $attrs) {
   global $curTag;
   $curTag .= "^$name";
}
function endElement($parser, $name) {
   global $curTag;
   $caret_pos = strrpos($curTag, '^');
   $curTag = substr($curTag, 0, $caret_pos);
}
function characterData($parser, $data) {
   global $curTag;
   global $country;
   global $listeners;
   global $maxlisteners;
   global $songs;
   if ($curTag == "^SHOUTCASTSERVER^LISTENERS^LISTENER^HOSTNAME") {
      $parts = explode(".", $data);
      $i = end($parts);
      $country[$i]++;
   }
   if ($curTag == "^SHOUTCASTSERVER^CURRENTLISTENERS") {
      $listeners = $data;
   }
   if ($curTag == "^SHOUTCASTSERVER^MAXLISTENERS") {
      $maxlisteners = $data;
   }
   if ($curTag == "^SHOUTCASTSERVER^SONGHISTORY^SONG^TITLE") {
      if (strpos($data, " 0:") === false)
         $songs .= "\n$data";
   }
}