PHP的Ajax RSS源示例
RSS 真正简单的整合是用来发布网站上经常更新的信息,如音频,视频,图像等。我们可以通过使用Ajax和PHP将…
RSS
真正简单的整合是用来发布网站上经常更新的信息,如音频,视频,图像等。我们可以通过使用Ajax和PHP将RSS源集成到网站。此代码演示如何在我们的网站中显示RSS提要。
的index.html
索引页面应如下所示 –
<html> <head> <script> function showRSS(str) { if (str.length == 0) { document.getElementById("output").innerHTML = ""; return; } if (window.XMLHttpRequest) { xmlhttp = new XMLHttpRequest(); }else { xmlhttp = new ActiveXObject("Microsoft.XMLHTTP"); } xmlhttp.onreadystatechange = function() { if (xmlhttp.readyState == 4 && xmlhttp.status == 200) { document.getElementById("output").innerHTML = xmlhttp.responseText; } } xmlhttp.open("GET","rss.php?q="+str,true); xmlhttp.send(); } </script> </head> <body> <p>Please Select an option to get RSS:</p> <form> <select onchange = "showRSS(this.value)"> <option value = "">Select an RSS-feed:</option> <option value = "cnn">CNN</option> <option value = "bbc">BBC News</option> <option value = "pc">PC World</option> </select> </form> <br> <div id = "output">RSS-feeds</div> </body> </html>
rss.php
rss.php包含有关如何访问rss提要并返回rss提要到网页的语法。
<?php $q = $_GET["q"]; if($q == "cnn") { $xml = ("http://rss.cnn.com/rss/cnn_topstories.rss"); }elseif($q == "bbc") { $xml = ("http://newsrss.bbc.co.uk/rss/newsonline_world_edition/americas/rss.xml"); }elseif($q = "pcw"){ $xml = ("http://www.pcworld.com/index.rss"); } $xmlDoc = new DOMDocument(); $xmlDoc->load($xml); $channel = $xmlDoc->getElementsByTagName('channel')->item(0); $channel_title = $channel->getElementsByTagName('title') ->item(0)->childNodes->item(0)->nodeValue; $channel_link = $channel->getElementsByTagName('link') ->item(0)->childNodes->item(0)->nodeValue; $channel_desc = $channel->getElementsByTagName('description') ->item(0)->childNodes->item(0)->nodeValue; echo("<p><a href = '" . $channel_link . "'>" . $channel_title . "</a>"); echo("<br>"); echo($channel_desc . "</p>"); $x = $xmlDoc->getElementsByTagName('item'); for ($i = 0; $i<=2; $i++) { $item_title = $x->item($i)->getElementsByTagName('title') ->item(0)->childNodes->item(0)->nodeValue; $item_link = $x->item($i)->getElementsByTagName('link') ->item(0)->childNodes->item(0)->nodeValue; $item_desc = $x->item($i)->getElementsByTagName('description') ->item(0)->childNodes->item(0)->nodeValue; echo ("<p><a href = '" . $item_link . "'>" . $item_title . "</a>"); echo ("<br>"); echo ($item_desc . "</p>"); } ?>
它会产生以下结果 –
类别:PHP 技巧、
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