PHP RSS/Feed类库
通用PHP RSS/Feed 生成类库(支持RSS 1.0/2.0和ATOM)PHP Universal Feed Generator (supports RSS 1.0, RSS 2.0 and ATOM)
可
生成的RSS版本:
[*]
RSS 1.0
(which officially obsoleted RSS 0.90)
[*]
RSS
2.0
(which officially obsoleted RSS 0.91, 0.92,
0.93 and 0.94)
[*]
ATOM 1.0
功能:
[*]可生成RSS 1.0, RSS 2.0 和ATOM 1.0 feeds
[*]所有生成的Feed可经过验证 feed validator
.
[*]支
持所有Feed属性.
[*]容易的设置channel 和 feed 条目
[*]为不同的版本使用命名空间.
[*]自
动转换日期格式.
[*]为ATOM feeds生成 UUID (通用唯一标识符 Universally Unique
Identifier).
[*]支持子标签和子标签属性. (如: image 和 encloser tags)
[*]完全的
PHP5面向对像构造 class structure.
[*]为需要的标签CDATA 编码.
[*]使用差不多的代码生成所有
版本的feed
使用范例：
<?php
// This is a minimum example of using the class
include("FeedWriter.php");
//Creating an instance of FeedWriter class.
$TestFeed = new FeedWriter(RSS2);
//Setting the channel elements
//Use wrapper functions for common channel elements
$TestFeed->setTitle('Testing & Checking the RSS writer class');
$TestFeed->setLink('http://www.ajaxray.com/projects/rss');
$TestFeed->setDescription('This is test of creating a RSS 2.0 feed Universal Feed Writer');
//Image title and link must match with the 'title' and 'link' channel elements for valid RSS 2.0
$TestFeed->setImage('Testing the RSS writer class','http://www.ajaxray.com/projects/rss','http://www.rightbrainsolution.com/images/logo.gif');
//Detriving informations from database addin feeds
$db->query($query);
$result = $db->result;
while($row = mysql_fetch_array($result, MYSQL_ASSOC))
{
//Create an empty FeedItem
$newItem = $TestFeed->createNewItem();
//Add elements to the feed item
$newItem->setTitle($row['title']);
$newItem->setLink($row['link']);
$newItem->setDate($row['create_date']);
$newItem->setDescription($row['description']);
//Now add the feed item
$TestFeed->addItem($newItem);
}
//OK. Everything is done. Now genarate the feed.
$TestFeed->genarateFeed();
?>
补充：
另一个生成RSS 2.0的PHP Class
下载: class_rss_writer.php
<?php
/**
* 使用范例：
* ==============================================================
$feed = new RSS();
$feed->title = "RSS Feed Title";
$feed->link = "http://www.newyork.com/";
$feed->description = "Recent articles on newyork.com.";
$db->query($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 = "<!]>";
$feed->addItem($item);
}
echo $feed->serve();
* ==============================================================
*/
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="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(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;
}
}
SimplePie是一个非常简单、实用的Syndication数据处理工具包。使用SimplePie
，可以快速的分析阅读RSS或Atom格
式数据。之前接触的更多是MagpieRSS，SimplePie在对RSS或Atom的数据处理能力上毫不逊色于MagpieRSS，同时
SimplePie拥有了比MagpieRSS更多的实用方法和属性，这可以帮助你快速的构建一个RSS阅读器或RSS数据处理模块。
<?php
include ('simplepie/simplepie.inc');
$simplepie=new SimplePie();
$simplepie->set_feed_url('http://ggggqqqqihc.yo2.cn/feed');
$simplepie->init();
echo '<h1>'.$simplepie->get_title().'</h1>';
foreach ($simplepie->get_items() as $item){
echo '<h2><a href="'.$item->get_permalink().'">'.$item->get_title().'</a></h2>';
echo '<p>'.$item->get_content().'</p>';
}
?>
获取到数据之后，调用 SimplePie 提供的实用方法，就很容易组装成一个个人的RSS阅读器了。
SimplePie 设计的一个很大的不合理之处是将 items 的排序方法内置在 init 方法中，这样想使用原生数据就需通过其他方式来实现了。
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