PHP RSS Reader

RSS Reader
Съдържа 3 файла:
1. Проста HTML форма
2. JavaScript
3.PHP

HTML форма
Това е HTML файла, съдържа проста HTML форма и връзка към JavaScript-a. 



<html>



<head>



<script type="text/javascript" src="getrss.js"></script>



</head>



<body>







<form> 



Select an RSS-Feed:



<select onchange="showRSS(this.value)">



<option value="Google">Google News</option>



<option value="MSNBC">MSNBC News</option>



</select>



</form>







<p><div id="rssOutput">



<b>RSS Feed will be listed here.</b></div></p>



</body>



</html>


JavaScript кода (getrss.js) 




var xmlHttp







function showRSS(str)



 { 



 xmlHttp=GetXmlHttpObject()



 if (xmlHttp==null)



  {



  alert ("Browser does not support HTTP Request")



  return



  }



 var url="getrss.php"



 url=url+"?q="+str



 url=url+"&sid="+Math.random()



 xmlHttp.onreadystatechange=stateChanged 



 xmlHttp.open("GET",url,true)



 xmlHttp.send(null)



 }







function stateChanged() 



 { 



 if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")



  { 



  document.getElementById("rssOutput")



  .innerHTML=xmlHttp.responseText 



  } 



 }







function GetXmlHttpObject()



{



var xmlHttp=null;



try



 {



 // Firefox, Opera 8.0+, Safari



 xmlHttp=new XMLHttpRequest();



 }



catch (e)



 {



 // Internet Explorer



 try



  {



  xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");



  }



 catch (e)



  {



  xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");



  }



 }



return xmlHttp;



}


PHP файлът (getrss.php) 




<?php



//get the q parameter from URL



$q=$_GET["q"];







//find out which feed was selected



if($q=="Google")



 {



 $xml=("[url]http://news.google.com/news?ned=us&topic=h&output=rss[/url]");



 }



elseif($q=="MSNBC")



 {



 $xml=("[url]http://rss.msnbc.msn.com/id/3032091/device/rss/rss.xml[/url]");



 }







$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>");



 }



?>


DEMO

Източник: http://w3schools.com

Script By MGDev