Is this way the best solution to read and save images from Rss Feeds?

Question

Hi, I've built a "RSS Feed Reader" module to my application. This module read and store all feeds in my database for future use. I want to know if there is a better and faster way to do that than the code described bellow. This code is executed every 10 minutes in a cron job.

// In my FeedEntries Model
public function fetchNewEntries()
    {
       require_once(APPLICATION_PATH . '/../library/simplehtmldom/simple_html_dom.php');
       $TableFeeds = new Model_DbTable_Feeds();
       $Feeds = $TableFeeds->fetchAll();
       $limit = 15;
       $count = 0;

       foreach($Feeds as $Feed)
       {
            if($count >$limit) break;

            try 
            {
                $entries = Zend_Feed_Reader::import($Feed->link);
            }
            catch(Zend_Feed_Exception $e)
            {
                // TODO: Log
                continue;
            }

            $linksList = $this->getAllEntriesPermaLinksByFeed($Feed->id);

            foreach ($entries as $entry) 
            {
                $commentsCount = ($entry->getCommentCount() > 0) ? $entry->getCommentCount() : 0;

                if(in_array($entry->getPermaLink(),$linksList))
                {
                    if(empty($Feed->link_comentarios))
                    {
                        // Update the comments count
                        $post = $this->getEntryByLink($entry->getLink(),$entry->getPermaLink());
                        $post->comments = $commentsCount;
                        $post->comments_date = date('Y-m-d H:i:s');
                        $post->save();
                    }

                    continue;
                } 

                $linksList[] = $entry->getPermaLink();

                $count++;
                if($count >$limit) break;

                $categories = $entry->getCategories()->getValues();

                $Category = new Model_DbTable_Categorias();
                $availableCategories = $Category->getList('slug');
                $categorias_id = array();

                foreach ($categories as $cat) {

                    if(!empty($cat))
                    {
                        $cat = str_replace(' & ',' ',$cat);
                        $slug = slugfy($cat);

                        if(in_array($slug,$availableCategories))
                        {
                            $categorias_id[] = array_isearch($slug,$availableCategories);
                        }
                        else
                        {
                            $cat_id = $Category->insert(array('nome' => utf8_encode(ucwords(strtolower(utf8_decode($cat)))), 'slug' => $slug));
                            $categorias_id[] = $cat_id;
                            $availableCategories[$cat_id] = $slug;
                        }
                    }
                }

                if(!in_array($Feed->categoria_id,$categorias_id))
                {
                    $categorias_id[] = $Feed->categoria_id;
                }

                $author = $entry->getAuthor(0);

                $Colunistas = new Model_DbTable_Colunistas();
                $author_id = $Colunistas->insertAuthorFromRss($author['name']);


                $entrySlug = slugfy($entry->getTitle());

                $data = array(
                    'feed_id' => $Feed->id,
                    'colunista_id' => $author_id,
                    'titulo' => $entry->getTitle(),
                    'descricao' => substr(strip_tags($entry->getContent()),0,350),
                    'slug' => $entrySlug,
                    'created_at' => $entry->getDateCreated()->get(Zend_Date::ISO_8601),
                    'link' => $entry->getLink(),
                    'permaLink' => $entry->getPermaLink(),
                    'html' => $entry->getContent(),
                    'comments' => $commentsCount,
                    'comments_date' => date('Y-m-d H:i:s')
                );

                $entry_id = $this->addEntry($data);


                $EntriesCategorias = new Model_DbTable_EntriesCategorias();
                foreach($categorias_id  as $categoria_id)
                {
                    $EntriesCategorias->insert(array('entry_id' => $entry_id,'categoria_id' => $categoria_id));
                }

            }
       }
    }