ulthon_information/app/common/tools/Rss.php

<?php
namespace app\common\tools;

use FeedWriter\RSS1;

class Rss
{
    public static function initRss1()
    {
        $feed = new RSS1();


        $feed->setTitle(Site::name());
        $feed->setLink(Site::indexUrl());
        $feed->setDescription(Site::desc());

        //It's important for RSS 1.0
        $feed->setChannelAbout(Site::keywords());

        // An image is optional.
        $feed->setImage(Site::logo(), 'PHP武器库头像', get_source_link('/'));

        //Adding a feed. Generally this portion will be in a loop and add all feeds.

        $list_post = Site::mapRecentlyPost();

        foreach ($list_post as $model_post) {
            //Create an empty FeedItem

            $new_item = $feed->createNewItem();

            $new_item->setTitle($model_post->title);

            $new_item->setLink($model_post->read_url);
            //The parameter is a timestamp for setDate() function
            $new_item->setDate($model_post->publish_time);
            $new_item->setDescription($model_post->desc);
            //Use core addElement() function for other supported optional elements

            //Now add the feed item
            $feed->addItem($new_item);
        }

        $content = $feed->generateFeed();

        return $content;
    }
}