<?php
$cachetime=0; // 12 Hours
$cachefile = 'cache/horoscope.txt';
if(!file_exists($cachefile) || filemtime($cachefile) < time() - $cachetime) {

    $xml = simplexml_load_file("http://www.vytautus.com/hor_rss.xml");
    $i=1;
    foreach ($xml->channel->item as $item) {

        $horoscope .= '<p>'.(string)$item->description.'</p>';
        $i++;
    }
    file_put_contents($cachefile, $horoscope);
}
$horoscope = file_get_contents($cachefile);
?>