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(emptyempty($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="http://purl.org/dc/elements/1.1/">' . "/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(emptyempty($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(emptyempty($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 = "http://website.com";
- $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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