XML_Unserializer

livedoor weather hacks*1の地点一覧を解析するのに。
PEAR package：http://pear.php.net/package/XML_Serializer
日本語ドキュメント：http://pear.php.net/manual/ja/package.xml.xml-serializer.php

require_once '/PEAR/XML/Unserializer.php';
$url = "http://weather.livedoor.com/forecast/rss/forecastmap.xml";

$xml = file_get_contents($url);
$Unserializer =& new XML_Unserializer();

$Unserializer->setOption('parseAttributes', TRUE);

$Unserializer->setOption('encoding', 'UTF-8');

$status = $Unserializer->unserialize($xml);

if (PEAR::isError($status)) { die($status->getMessage()); }

$ary = $Unserializer->getUnserializedData();

print_r($ary);

これだけでOK？
しかし、返される配列（ary）が深すぎてまた何とも面倒…

*1:http://weather.livedoor.com/weather_hacks/