php编写RSS源

最后更新于:2022-04-01 09:55:39

#### 记编写rss源 点点细雨     2013年11月26日星期二 为了提高搜索引擎的收录速度,今天开始编写rss源来增加对搜索引擎的友好。 废话就不多打了,毕竟我打字速度也不快(O(∩_∩)O哈哈~)。 本文为原创,转载请注明出处! ### 一、开始解析rss文件。 下面是百度国内新闻rss的地址: [http://news.baidu.com/n?cmd=1&class=civilnews&tn=rss](http://news.baidu.com/n?cmd=1&class=civilnews&tn=rss) 下面是源文件 ![rss源文件](https://docs.gechiui.com/gc-content/uploads/sites/kancloud/2016-03-17_56ea1b25c5c8e.jpg) 很显然这就是一个xml文件 (~ o ~)~zZ ### 二、浏览器的解析 那么对于这样的一个rss文件,浏览器是怎样解析的呢? ie8: ![ie8的rss解析](https://docs.gechiui.com/gc-content/uploads/sites/kancloud/2016-03-17_56ea1b25ef364.jpg) QQ浏览器: ![](https://docs.gechiui.com/gc-content/uploads/sites/kancloud/2016-03-17_56ea1b261b8d5.jpg) 傲游: ![傲游](https://docs.gechiui.com/gc-content/uploads/sites/kancloud/2016-03-17_56ea1b263d08f.jpg) 谷歌: ![谷歌](https://docs.gechiui.com/gc-content/uploads/sites/kancloud/2016-03-17_56ea1b266bee8.jpg) 火狐: ![火狐](https://docs.gechiui.com/gc-content/uploads/sites/kancloud/2016-03-17_56ea1b268e352.jpg) 从上边看来,源文件为xml的rss源被浏览器解析成rss源,就直接可以通过浏览器订阅啦,请无视那个放弃rss功能的谷歌吧! T_T ### 三、编写: 分析源代码,掌握结构 ![注释](https://docs.gechiui.com/gc-content/uploads/sites/kancloud/2016-03-17_56ea1b26a957b.jpg) 我们要做的就是从我们的网站上获取到新闻并添加到rss中。 我们参考的方法是phpcms中百度网站地图的生成方式 下面分析下流程 1.创建xml文件头 2.写入新闻 3.加上xml文件结尾 这是创建的步骤,那么我们提交的rss网址的控制器流程呢,当然不能每次打开rss都要进行一次查询数据库,所以我们把rss存入文件中,让控制器直接打开文件,减少服务器压力。 我的项目是基于thinkphp的,下面是我的控制器,大家一看就明白了 代码 ~~~ <?php /** * 网站rss * */ class RssAction extends HomeAction { public function _initialize() { parent::_initialize(); //RBAC 验证接口初始化 $this->header = "<\x3Fxml version=\"1.0\" encoding=\"utf-8\"\x3F>\n<rss version=\"2.0\"><channel>"; $this->footer = "</channel>\n</rss>\n"; $this->rss=""; } public function rss(){ $config= require './config.php'; //网站配置 $rss_file = $rss_path . 'rss.xml'; if(file_exists($rss_file)){ $rss= file_get_contents($rss_file); echo $rss; }else{ $put= $this->index(); $this->rss(); } } public function index() { $config= require './config.php'; //网站配置 //var_dump($config); $this_domain=$config['web_url']; //获取rss配置信息 $rss_path=$config['rss_path']; $title=$config['rss_title']; $img_title=$config['rss_img_title']; $img_link=$config['rss_img_link']; $img_url=$config['rss_img_url']; $description=$config['rss_description']; $link=$config['rss_link']; $language=$config['rss_language']; $docs=$config['rss_docs']; $generator=$config['rss_generator']; $ttl=$config['rss_ttl']; //文章数量 $NewsDB=D("News"); $newsList=$NewsDB->getAllNews("","news_id desc",$ttl); //var_dump($newsList); //循环每条新闻,分别放入数组 $SourceDB = D("Source"); $items=array(); foreach ($newsList as $key => $value) { $date= date("Y:m-d H:i:s",$value['news_publish_time']); //获取来源 $sourceL=$SourceDB->getSource("so_id = ".$value['so_id']); $source=$sourceL['so_name']; $url=$this_domain.U('/Home/Index/content',array('id'=>$value['news_id'])); $item= $this->item($value['news_title'],$url,$date,$source,$value['news_author'],$value['news_intro']); // var_dump($item); $items[]=$item; } //var_dump($this->items); // var_dump($_SERVER['DOCUMENT_ROOT']); $rss_file = $_SERVER['DOCUMENT_ROOT'].$rss_path . 'rss.xml'; // echo $rss_file; @mkdir($dir, 0777, true); $result= $this->rss_build($items,$rss_file, $title, $img_title, $img_link, $img_url, $description, $link, $language, $docs, $generator, $ttl); // $this->success("生成站点地图成功"); //$file=fopen($rss_file,"r") or exit("Unable to open file!"); // var_dump($result); // echo $result; } /** * rss源的结构 * @param type $title * @param type $link * @param type $pubDate * @param type $source * @param type $author * @param type $description * @return type 数组 */ private function item($title, $link = '', $pubDate = '', $source = '', $author= '', $description = '') { $data = array(); $data['title'] = $title; $data['link'] = $link; $data['description'] = $description; $data['author'] = $author; $data['source'] = $source; $data['pubDate'] = $pubDate; return $data; } /** * 生成xml * @param type $file_name * @param type $this_domain * @param type $email * @param type $time * @return type */ private function rss_build($items,$file_name = null,$title="",$img_title='',$img_link='',$img_url='',$description='',$link='', $language='zh-cn',$docs='', $generator='', $ttl='') { //百度头部 $this->rss = ''; $this->rss = $this->header; $this->rss .= "<title>" . $title . "</title>\n"; $this->rss .= "<image>\n<title>".$img_title."\n</title>\n<link>".$img_link ."\n</link><url>". $img_url ."</url></image>\n"; $this->rss .= "<description>".$description."</description>\n"; $this->rss .= "<link>".$link."</link>\n"; $this->rss .= "<language>" . $language . "</language>\n"; $this->rss .= "<docs>" . $docs . "</docs>\n"; $this->rss .= "<generator>". $generator . "</generator>\n"; $this->rss .= "<ttl>" . $ttl . "</ttl>\n"; foreach ($items as $item) { $this->rss .= "<item>\n"; $this->rss .= "<title><![CDATA[" . $item['title'] . "]]></title>\n"; $this->rss .= "<link><![CDATA[" . $item['link'] . "]]></link>\n"; $this->rss .= "<pubDate> <![CDATA[" . $item['pubDate'] . "]]></pubDate>\n"; $this->rss .= "<source><![CDATA[" . $item['source'] . "]]></source>\n"; $this->rss .= "<author><![CDATA[" . $item['author'] . "]]></author>\n"; $this->rss .= "<description><![CDATA[" . $item['description'] . "]]></description>\n"; $this->rss .= "</item>\n"; } $this->rss .= $this->footer . "\n"; if (!is_null($file_name)) { return file_put_contents($file_name, $this->rss); } else { return $this->rss; } } } ~~~ ### 四、完善功能 当然,做完上面的还不算完整,为了保证可扩展性,我把rss的标题之类的都做成了配置文件,可以直接通过后台来修改。 ~~~ 'rss_path'=>'/tisumoon/', 'rss_title'=>'天树网新闻站', 'rss_img_title'=>'天树网', 'rss_img_link'=>'http://www.tisumoon.com/', 'rss_img_url'=>'', 'rss_description'=>'自媒体新闻网站。', 'rss_link'=>'http://www.tisumoon.com/', 'rss_language'=>'zh-cn', 'rss_docs'=>'', 'rss_generator'=>'http://www.tisumoon.com/', 'rss_ttl'=>'10', ~~~ ~~~ <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>网站RSS设置</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <link rel='stylesheet' type='text/css' href='__PUBLIC__/Admin/css/admin_style.css' /> <script type="text/javascript" src="__PUBLIC__/js/jquery.min.js"></script> <script type="text/javascript" src="__PUBLIC__/js/formValidator.js"></script> <script type="text/javascript" src="__PUBLIC__/js/formValidatorRegex.js"></script> <script type="text/javascript"> $(document).ready(function(){ $.formValidator.initConfig({formid:"myform",autotip:true,onerror:function(msg,obj){ window.top.art.dialog({content:msg,lock:true,width:250,height:100,ok:function(){$(obj).focus();}}); }}); $("#rss_title").formValidator({onshow:"请输入订阅标题",onfocus:"请输入订阅标题"}).regexValidator({regexp:"ps_username",datatype: "enum",onerror:"应为 中文、字母、数字 或 _ 组成"}); $("#rss_img_title").formValidator({empty:true,onshow:"请输入图片提示",onfocus:"请输入图片提示"}); $("#rss_img_url").formValidator({empty:true,onshow:"请选择图片",onfocus:"请选择图片"}); $("#rss_img_link").formValidator({empty:true,onshow:"请输入图片链接,如:http://www.xxx.com/",onfocus:"请输入图片链接,如:http://www.xxx.com/"}).regexValidator({regexp:"^http[s]?:\/\/(.+)\/$",onerror:"格式应该为 http://www.xxx.com/,请以‘/’结束"}); $("#rss_link").formValidator({onshow:"请输入网站链接,如:http://www.xxx.com/",onfocus:"请输入网站链接,如:http://www.xxx.com/"}).regexValidator({regexp:"^http[s]?:\/\/(.+)\/$",onerror:"格式应该为 http://www.xxx.com/,请以‘/’结束"}); $("#rss_path").formValidator({onshow:"安装在根目录请使用:/",onfocus:"安装在根目录请使用:/"}).inputValidator({regexp:"^/\\w*",onerror:"格式应该为 /[xxx]"}); $("#rss_language").formValidator({empty:true,onshow:"请输入rss语言",onfocus:"默认为‘zh-CN’"}).inputValidator({max:10,onerror:"不能超过10个字符,请确认"}); $("#rss_docs").formValidator({empty:true,onshow:"请输入docs",onfocus:"请输入docs"}).inputValidator({max:30,onerror:"不能超过30个字符,请确认"}); $("#rss_description").formValidator({empty:true,onshow:"请输入网站描述",onfocus:"请输入网站描述"}).inputValidator({max:50,onerror:"不能超过20个字符,请确认"}); $("#rss_ttl").formValidator({onshow:"rss中展示的新闻条数",onfocus:"rss中展示的新闻条数"}).regexValidator({regexp:"num1",datatype: "enum",onerror:"应为正数"}); }); $("#rss_generator").formValidator({onshow:"请输入源网站,如:http://www.xxx.com/",onfocus:"请输入网站链接,如:http://www.xxx.com/"}).regexValidator({regexp:"^http[s]?:\/\/(.+)\/$",onerror:"格式应该为 http://www.xxx.com/,请以‘/’结束"}); </script> </head> <body> <form action="?s=Admin/Rss/update" method="post" id="myform"> <table width="98%" border="0" cellpadding="4" cellspacing="1" class="table"> <tr class="table_title"><td colspan="2">RSS订阅信息设置</td></tr> <tr class="ji"> <td class="left">订阅标题</td> <td><input type="text" name="con[rss_title]" id="rss_title" size="35" maxlength="50" value="{$con.rss_title}"> </td> </tr> <tr class="ji"> <td class="left">图片提示</td> <td><input type="text" name="con[rss_img_title]" id="rss_img_title" size="35" maxlength="50" value="{$con.rss_img_title}"> </td> </tr> <tr class="tr"> <td class="left">图片链接</td> <td ><input type="text" name="con[rss_img_link]" id="rss_img_link" size="35" maxlength="50" value="{$con.rss_img_link}" > </td> </tr> <tr class="tr"> <td class="left">图片路径</td> <td ><input type="file" name="img_url" id="rss_img_url" size="35" maxlength="50" ><img style="height: 100px;width: auto;" src="{$con.rss_img_url}"></img> </td> </tr> <tr class="tr"> <td class="left">网站链接</td> <td> <input type="text" name="con[rss_link]" id="rss_link" size="35" maxlength="50" value="{$con.rss_link}" > </td> </tr> <tr class="tr"> <td class="left">网站描述</td> <td> <textarea name="con[rss_description]" id="rss_description" style="width:500px;height:50px">{$con.rss_description}</textarea></td> </tr> <tr class="ji"> <td class="left">语言</td> <td><input type="text" name="con[rss_language]" id="rss_language" size="35" maxlength="50" value="{$con.rss_language}" > </td> </tr> <tr class="tr"> <td class="left">docs</td> <td><input type="text" name="con[rss_docs]" id="rss_docs" size="35" value="{$con.rss_docs}"> </td> </tr> <tr class="ji"> <td class="left">源网站</td> <td><input type="text" name="con[rss_generator]" id="rss_generator" size="35" maxlength="50" value="{$con.rss_generator}" ></td> </td> </tr> <tr class="tr"> <td class="left">新闻条数</td> <td> <input type="text" name="con[rss_ttl]" id="rss_ttl" size="35" maxlength="50" value="{$con.rss_ttl}"> </td> </tr> <tr class="tr"> <td class="left">Rss文件存放路径</td> <td> <input type="text" name="con[rss_path]" id="rss_path" size="35" maxlength="50" value="{$con.rss_path}"> </td> </tr> <tr class="ji"> <td colspan="2"> <input class="bginput" type="submit" name="dosubmit" value="提交"> <input class="bginput" type="reset" name="Input" value="重置" > </td> </tr> </table> </form> <include file="Index:footer" /> </body> </html> ~~~ ### 五、后记 本来想在网上找些资料把功能做出来,但是国内技术网站相互抄袭,一个文章内容只要标题一样在所有的网站上都是一样的,这种现象很不好,严重阻碍的技术型网站的进步,所以呢,还是自己研究写出来吧,本着开源的精神跟大家分享,如果那里不好请一定要指出来啊! 谢谢。
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