_php tutorial on parsing XML data in PHP

If you plan to work with XML data in PHP, you need an XML library to extract the data for you. For example, parsing an RSS feed or pattern matching (looking for XHTML images or elements).

The simplexml extension provides a very intuitive API that makes it easier to convert XML into objects and traverse elements. The only drawback is that loading an entire document or a very large XML file in memory can be a problem.

If performance is a consideration, you can go with XmlReader. XmlReader is an XML parser that loads the entire document in memory, rather than in RAM, by traversing through each node during the loading process.

The following code uses simple XML to get the latest RSS from my site. On my server, I have used the Curl library to handle HTTP connections because it supports server hosting and is more secure.

 
 

  
  

  
 PHP  
  
  

  
 
  
  

  
function Load_file ($url) {
  
  

  
$ CH  =  Curl_init ($url); 
  
  

  
#Return HTTP response in string
  
  

  
curl_setopt ($ch, Curlopt_returntransfer, true);
  
  

  
$ XML  =  simplexml_load_string (Curl_exec ($ch)); 
  
  

  
return $xml;
  
  

  
}
  
  

  
 
  
  

  
$ Feedurl  =  ' http://naveenbalani.com/index.php/feed/' ; 
  
  

  
$ RSS  =  Load_file ($feedurl); 
  
  

  
 
  
  

  
foreach ($rss->channel->Item as $item) {
  
  

  
echo " < H2 > " . $item->title. "  h2>";  
  
  

  
echo " < P > " . $item->description. "  p>";  
  
  

  
}
  
  

  
 
  
  

  
?>  
 
 

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