php生成rss类

以下是一个简单的PHP生成RSS类的示例代码：

class RSSGenerator {
    private $rssData;

    public function __construct() {
        $this->rssData = '<?xml version="1.0" encoding="UTF-8"?>
            <rss version="2.0">
                <channel>
                    <title></title>
                    <link></link>
                    <description></description>
                </channel>
            </rss>';
    }

    public function setTitle($title) {
        $this->rssData = str_replace('<title></title>', '<title>'.$title.'</title>', $this->rssData);
    }

    public function setLink($link) {
        $this->rssData = str_replace('<link></link>', '<link>'.$link.'</link>', $this->rssData);
    }

    public function setDescription($description) {
        $this->rssData = str_replace('<description></description>', '<description>'.$description.'</description>', $this->rssData);
    }

    public function addItem($title, $link, $description) {
        $itemData = '
            <item>
                <title>'.$title.'</title>
                <link>'.$link.'</link>
                <description>'.$description.'</description>
            </item>';
        $this->rssData = str_replace('</channel>', $itemData.'</channel>', $this->rssData);
    }

    public function generateRSS() {
        header('Content-type: application/rss+xml');
        echo $this->rssData;
    }
}

使用示例：

$rss = new RSSGenerator();
$rss->setTitle('My RSS Feed');
$rss->setLink('http://example.com/rss');
$rss->setDescription('This is a sample RSS feed');

$rss->addItem('Article 1', 'http://example.com/article1', 'This is the first article');
$rss->addItem('Article 2', 'http://example.com/article2', 'This is the second article');

$rss->generateRSS();

这个RSS生成类提供了一些方法来设置RSS的标题、链接和描述，以及添加项目。最后，调用generateRSS()方法来输出生成的RSS数据。