reroom-rss.php

<?php
/**
 * <cron>
 * *	*	*	*	*	/usr/bin/php /path/to/reroom-rss.php >>/path/to/cron.log 2>&1
 * </cron>
 */

require_once 'Net/Socket/Tiarra.php'; // openpear

$url = "http://reroom.jp/latest/feed/";

try
{
    $m = new Memcached();
    $m->addServer('localhost', 11211);

    $tiarra = new Net_Socket_Tiarra('julius');

    $x = simplexml_load_file($url);
    foreach ($x->entry as $entry) {
        $link = (string)$entry->id;

        if (!$m->get($link)) {
            if (preg_match('!(http://s.reroom.jp/.+\.jpg)!', (string)$entry->summary, $match)) {
                $msg = sprintf("New: %s (by %s) %s", $entry->title, $entry->author->name, $match[1]);
                echo $msg, PHP_EOL;
                $tiarra->message('#info-reroom@es', $msg);
            }
            $m->set($link, true);
        }
    }

} catch (Exception $e) {
    echo $e->getMessage();
    // notice
}