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标题 php实现的RSS生成类实例
内容
    php实现的RSS生成类实例
    这篇文章主要介绍了php实现的RSS生成类,实例分析了RSS生成类的原理、定义与使用技巧,非常具有实用价值,需要的朋友可以参考下
    本文实例讲述了php实现的RSS生成类。分享给大家供大家参考。具体如下：
    class RSS
    {
    var $title;
    var $link;
    var $description;
    var $language = "en-us";
    var $pubDate;
    var $items;
    var $tags;
    function RSS()
    {
    $this->items = array();
    $this->tags = array();
    }
    function addItem($item)
    {
    $this->items[] = $item;
    }
    function setPubDate($when)
    {
    if(strtotime($when) == false)
    $this->pubDate = date("D, d M Y H:i:s ", $when) . "GMT";
    else
    $this->pubDate = date("D, d M Y H:i:s ", strtotime($when)) . "GMT";
    }
    function getPubDate()
    {
    if(empty($this->pubDate))
    return date("D, d M Y H:i:s ") . "GMT";
    else
    return $this->pubDate;
    }
    function addTag($tag, $value)
    {
    $this->tags[$tag] = $value;
    }
    function out()
    {
    $out = $this->header();
    $out .= "<channel>\n";
    $out .= "<title>" . $this->title . "</title>\n";
    $out .= "<link>" . $this->link . "</link>\n";
    $out .= "<description>" . $this->description . "</description>\n";
    $out .= "<language>" . $this->language . "</language>\n";
    $out .= "<pubDate>" . $this->getPubDate() . "</pubDate>\n";
    foreach($this->tags as $key => $val) $out .= "<$key>$val</$key>\n";
    foreach($this->items as $item) $out .= $item->out();
    $out .= "</channel>\n";
    $out .= $this->footer();
    $out = str_replace("&", "&", $out);
    return $out;
    }
    function serve($contentType = "application/xml")
    {
    $xml = $this->out();
    header("Content-type: $contentType");
    echo $xml;
    }
    function header()
    {
    $out = '<?xml version="1.0" encoding="utf-8"?>' . "\n";
    $out .= '<rss version="2.0" xmlns:dc=" . "\n";
    return $out;
    }
    function footer()
    {
    return '</rss>';
    }
    }
    class RSSItem
    {
    var $title;
    var $link;
    var $description;
    var $pubDate;
    var $guid;
    var $tags;
    var $attachment;
    var $length;
    var $mimetype;
    function RSSItem()
    {
    $this->tags = array();
    }
    function setPubDate($when)
    {
    if(strtotime($when) == false)
    $this->pubDate = date("D, d M Y H:i:s ", $when) . "GMT";
    else
    $this->pubDate = date("D, d M Y H:i:s ", strtotime($when)) . "GMT";
    }
    function getPubDate()
    {
    if(empty($this->pubDate))
    return date("D, d M Y H:i:s ") . "GMT";
    else
    return $this->pubDate;
    }
    function addTag($tag, $value)
    {
    $this->tags[$tag] = $value;
    }
    function out()
    {
    $out .= "<item>\n";
    $out .= "<title>" . $this->title . "</title>\n";
    $out .= "<link>" . $this->link . "</link>\n";
    $out .= "<description>" . $this->description . "</description>\n";
    $out .= "<pubDate>" . $this->getPubDate() . "</pubDate>\n";
    if($this->attachment != "")
    $out .= "<enclosure url='{$this->attachment}' length='{$this->length}' type='{$this->mimetype}' />";
    if(empty($this->guid)) $this->guid = $this->link;
    $out .= "<guid>" . $this->guid . "</guid>\n";
    foreach($this->tags as $key => $val) $out .= "<$key>$val</$key\n>";
    $out .= "</item>\n";
    return $out;
    }
    function enclosure($url, $mimetype, $length)
    {
    $this->attachment = $url;
    $this->mimetype = $mimetype;
    $this->length = $length;
    }
    }
    使用示例如下：
    $feed = new RSS();
    $feed->title = "RSS Feed Title";
    $feed->link = "";
    $feed->description = "Recent articles on your website.";
    $db->query($query);
    $result = $db->result;
    while($row = mysql_fetch_array($result, MYSQL_ASSOC))
    {
    $item = new RSSItem();
    $item->title = $title;
    $item->link = $link;
    $item->setPubDate($create_date);
    $item->description = "<![CDATA[ $html ]]>";
    $feed->addItem($item);
    }
    echo $feed->serve();
    希望本文所述对大家的php程序设计有所帮助。
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更新时间：2025/5/20 3:54:27