PHP生成RSS文件类实例

<?php

　　if (defined('_class_rss_php')) return;

　　define('_class_rss_php教程',1);

　　/**

　　*  使用说明：

　　*  $rss = new rss('redfox','http://glzy8.com/',"redfox's blog");

　　*  $rss->additem('rss class',"http://www.glzy8.com","xxx",date());

　　*  $rss->additem(...);

　　*  $rss->savetofile(...);

　　*/

　　class rss {

　　//public

　　$rss_ver = "2.0";

　　$channel_title = '';

　　$channel_link = '';

　　$channel_description = '';

　　$language = 'zh_cn';

　　$copyright = '';

　　$webmaster = '';

　　$pubdate = '';

　　$lastbuilddate = '';

　　$generator = 'redfox rss generator';

　　$content = '';

　　$items = array();

　　function rss($title, $link, $description) {

　　$this->channel_title = $title;

　　$this->channel_link = $link;

　　$this->channel_description = $description;

　　$this->pubdate = date('y-m-d h:i:s',time());

　　$this->lastbuilddate = date('y-m-d h:i:s',time());

　　}

　　function additem($title, $link, $description ,$pubdate) {

　　$this->items[] = array('titile' => $title ,

　　'link' => $link,

　　'description' => $description,

　　'pubdate' => $pubdate);

　　}

　　function buildrss() {

　　$s = "<!--l version="1.0" encoding="gb2312"--> ";

　　// start channel

　　$s .= " ";

　　$s .= " "

　　$s .= "<link />{$this->channel_link} ";

　　$s .= "{$this->channel_description} ";

　　$s .= "{$this->language} ";

　　if (!emptyempty($this->copyright)) {

　　$s .= "{$this->copyright} ";

　　}

　　if (!emptyempty($this->webmaster)) {

　　$s .= "{$this->webmaster} ";

　　}

　　if (!emptyempty($this->pubdate)) {

　　$s .= "{$this->pubdate} ";

　　}

　　if (!emptyempty($this->lastbuilddate)) {

　　$s .= "{$this->lastbuilddate} ";

　　}

　　if (!emptyempty($this->generator)) {

　　$s .= "{$this->generator} ";

　　}

　　// start items

　　for ($i=0;$iitems),$i++) {

　　$s .= " ";

　　$s .= " ";

　　$s .= "<link />{$this->items[$i]['link']} ";

　　$s .= "<!--data[{$thi-->items[$i]['description']}]]> ";

　　$s .= "{$this->items[$i]['pubdate']} ";

　　$s .= " ";

　　}

　　// close channel

　　$s .= " ";

　　$this->content = $s;

　　}

　　function show() {

　　if (emptyempty($this->content)) $this->buildrss();

　　header('content-type:text/xml');

　　echo($this->content);

　　}

　　function savetofile($fname) {

　　if (emptyempty($this->content)) $this->buildrss();

　　$handle = fopen($fname, 'wb');

　　if ($handle === false)  return false;

　　fwrite($handle, $this->content);

　　fclose($handle);

　　}

　　}

　　?>