WordPress Transient Feedburner

WordPress-Transient-Feedburner.php

function feed_subscribers(){
        $feed_url = 'http://feeds.feedburner.com/yourname';
        $count = get_transient('feed_count');
        if ($count != false) return $count;
        $count = 0;
        $data  = wp_remote_get('http://feedburner.google.com/api/awareness/1.0/GetFeedData?uri='.$feed_url.'');
   if (is_wp_error($data)) {
        return 'error';
   }else{
        $body = wp_remote_retrieve_body($data);
        $xml = new SimpleXMLElement($body);
        $status = $xml->attributes();
        if ($status == 'ok') {
                $count = $xml->feed->entry->attributes()->circulation;
        } else {
                $count = 300; // fallback number
        }
   }
        set_transient('feed_count', $count, 60*60*24); // 24 hour cache
        echo $count;
}

This is gist is created by Abhishek Ghosh for the blog article WordPress Transients For Caching Social Media Counts.