Magento: Get new products programatically

To get new product collection in magento:-

$todayStartOfDayDate  = Mage::app()->getLocale()->date()
    ->setTime('00:00:00')
    ->toString(Varien_Date::DATETIME_INTERNAL_FORMAT);

$todayEndOfDayDate  = Mage::app()->getLocale()->date()
    ->setTime('23:59:59')
    ->toString(Varien_Date::DATETIME_INTERNAL_FORMAT);

/** @var $collection Mage_Catalog_Model_Resource_Product_Collection */
$collection = Mage::getResourceModel('catalog/product_collection')
                ->setVisibility(Mage::getSingleton('catalog/product_visibility')
                ->getVisibleInCatalogIds());    

$collection = $collection->addMinimalPrice()
    ->addFinalPrice()
    ->addTaxPercents()
    ->addAttributeToSelect(Mage::getSingleton('catalog/config')
    ->getProductAttributes())
    ->addUrlRewrite()
    ->addStoreFilter()
    ->addAttributeToFilter('news_from_date', array('or'=> array(
        0 => array('date' => true, 'to' => $todayEndOfDayDate),
        1 => array('is' => new Zend_Db_Expr('null')))
    ), 'left')
    ->addAttributeToFilter('news_to_date', array('or'=> array(
        0 => array('date' => true, 'from' => $todayStartOfDayDate),
        1 => array('is' => new Zend_Db_Expr('null')))
    ), 'left')
    ->addAttributeToFilter(
        array(
            array('attribute' => 'news_from_date', 'is'=>new Zend_Db_Expr('not null')),
            array('attribute' => 'news_to_date', 'is'=>new Zend_Db_Expr('not null'))
            )
      )
    ->addAttributeToSort('news_from_date', 'desc')
;