Barcode view helper

Barcode.php

<?php

class Soflomo_View_Helper_Barcode extends Zend_View_Helper_Abstract
{
    public function barcode ($text, $type = 'code128', $options = array())
    {
        $options  = array('text' => $text) + $options;
        $resource = Zend_Barcode::draw(
            $type, 'image', $options, array()
        );

        ob_start();
        imagepng($resource);
        $data = ob_get_clean();

        return base64_encode($data);
    }
}