<?php

/**

 * Zend Framework

 *

 * LICENSE

 *

 * This source file is subject to the new BSD license that is bundled

 * with this package in the file LICENSE.txt.

 * It is also available through the world-wide-web at this URL:

 * http://framework.zend.com/license/new-bsd

 * If you did not receive a copy of the license and are unable to

 * obtain it through the world-wide-web, please send an email

 * to license@zend.com so we can send you a copy immediately.

 *

 * @category   Zend

 * @package    Zend_Feed_Reader

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 * @version    $Id: Category.php 20953 2010-02-06 17:55:34Z padraic $

 */

/**

 * @see Zend_Feed_Reader_Collection_CollectionAbstract

 */

require_once 'Zend/Feed/Reader/Collection/CollectionAbstract.php';

/**

 * @category   Zend

 * @package    Zend_Feed_Reader

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 */

class Zend_Feed_Reader_Collection_Category

extends Zend_Feed_Reader_Collection_CollectionAbstract

{

    /**

     * Return a simple array of the most relevant slice of

     * the collection values. For example, feed categories contain

     * the category name, domain/URI, and other data. This method would

     * merely return the most useful data - i.e. the category names.

     *

     * @return array

     */

    public function getValues() {

        $categories = array();

        foreach ($this->getIterator() as $element) {

            if (isset($element['label']) && !empty($element['label'])) {

                $categories[] = $element['label'];

            } else {

                $categories[] = $element['term'];

            }

        }

        return array_unique($categories);

    }

}