当前位置: 潍坊三六九 > AJAX RSS Reader_PHP 教程_

AJAX RSS Reader_PHP 教程_

内容

<html> <head> <script> function showRSS(str) { if (str.length==0) { document.getElementById("rssOutput").innerHTML=""; return; } if (window.XMLHttpRequest) {// code for IE7 , Firefox, Chrome, Opera, Safari xmlhttp=new XMLHttpRequest(); } else {// code for IE6, IE5 xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); } xmlhttp.onreadystatechange=function() { if (xmlhttp.readyState==4 && xmlhttp.status==200) { document.getElementById("rssOutput").innerHTML=xmlhttp.responseText; } } xmlhttp.open("GET","getrss.php?q=" str,true); xmlhttp.send(); } </script> </head> <body> <form> <select onchange="showRSS(this.value)"> <option value="">Select an RSS-feed:</option> <option value="Google">Google News</option> <option value="MSNBC">MSNBC News</option> </select> </form> <br> <div id="rssOutput">RSS-feed will be listed here...</div> </body> </html> <?php //get the q parameter from URL $q=$_GET["q"]; //find out which feed was selected if($q=="Google") { $xml=("http://news.google.com/news?ned=us&topic=h&output=rss"); } elseif($q=="MSNBC") { $xml=("http://rss.msnbc.msn.com/id/3032091/device/rss/rss.xml"); } $xmlDoc = new DOMDocument(); $xmlDoc->load($xml); //get elements from "<channel>" $channel=$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; //output elements from "<channel>" echo("<p><a href='" . $channel_link . "'>" . $channel_title . "</a>"); echo("<br>"); echo($channel_desc . "</p>"); //get and output "<item>" elements $x=$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>"); } ?>

相关推荐

推荐信息