Simplepie in yii

I would like to implement a feed aggregator in my app. basically get link, title, description and date then insert to my database so that i can render the data to my chice. I decided to use simplepie but when I run the page I get this The connection to the server was reset while the page was loading. if anyone has done or know why please help. Here is my code.

public function actionCrawl()

    {

    Yii::import('application.vendors.*');

    require "simplepie/simplepie.php";

    $feed = new SimplePie();

    $feed->set_feed_url('http://dallas.craigslist.org/res/index.rss');


    $feed->set_cache_location($_SERVER['DOCUMENT_ROOT'] . 'applications/cache');

    //$feed->set_output_encoding('ISO-8859-1');

    // Initialize Simplepie.

    $feed->init();

    //Now it's time to loop through the parsed items and load them to the database.

   foreach($feed->get_items() as $item)

    {

    $link = $item->get_permalink();

    $title = $item->get_title();

    $description = $item->get_description();

    $date = $item->get_date('Y-m-j g:i:s');

    //This next part will check for duplicated items by hashing the content and comparing it to the hashes in   the database.

    $content_hash = md5($title);

    $sql = "SELECT * FROM {{classifieds}} WHERE content_hash = :contentHash";

    $num_rows = Yii::app()->db->createCommand($sql)->queryRow();

    $num_rows->bindValue(":contentHash", $content_hash, PDO::PARAM_STR);

    

    if ($num_rows > 0) { }

    // If this item's hash doesn't match any in the database

    else

    { 

    if(isset($date))

    {

    $sql = "INSERT INTO {{classifieds}} (title, , description, content_hash, url, date)

     VALUES(:Title, :Description, :Image, :Link, :Updatetime, :date)";

    $command = Yii::app()->db->createCommand($sql);

    $command->bindValue(":Title", $title, PDO::PARAM_STR);

    $command->bindValue(":Description", $description, PDO::PARAM_STR);

    //$command->bindValue(":Image", $image, PDO::PARAM_STR);

    $command->bindValue(":Link", $link, PDO::PARAM_STR);

    $command->bindValue(":date", $date, PDO::PARAM_STR);

    return $command->execute();

    }

    else

    {

    $sql = "INSERT INTO {{classifieds}} (title, , description, content_hash, url)

     VALUES(:Title, :Description, :Image, :Link)";

    $command = Yii::app()->db->createCommand($sql);

    $command->bindValue(":Title", $title, PDO::PARAM_STR);

    $command->bindValue(":Description", $description, PDO::PARAM_STR);

    //$command->bindValue(":Image", $image, PDO::PARAM_STR);

    $command->bindValue(":Link", $link, PDO::PARAM_STR);

    return $command->execute(); 

    }

    }

    }

    echo 'Crawler finished';

    

    }

Got it working with Zend feed reader.