how to use dom php parser

Question

I\'m new to DOM parsing in PHP:
I have a HTML file that I\'m trying to parse. It has a bunch of DIVs like this:

 
   <         


        
      

Answer 1

First i have to tell you that you can't use the same id on two different divs; there are classes for that point. Every element should have an unique id.

Code to get the contents of the div with id="interestingbox"

$html = '



 
   

        
Content1
        
Content2
   


a link

';


$dom_document = new DOMDocument();

$dom_document->loadHTML($html);

//use DOMXpath to navigate the html with the DOM
$dom_xpath = new DOMXpath($dom_document);

// if you want to get the div with id=interestingbox
$elements = $dom_xpath->query("*/div[@id='interestingbox']");

if (!is_null($elements)) {

  foreach ($elements as $element) {
    echo "\n[". $element->nodeName. "]";

    $nodes = $element->childNodes;
    foreach ($nodes as $node) {
      echo $node->nodeValue. "\n";
    }

  }
}

//OUTPUT
[div]  {
        Content1
        Content2
}

Example with classes:

$html = '



 
   

        
Content1
        
Content2
   


a link

';

//the same as before.. just change the xpath

[...]

$elements = $dom_xpath->query("*/div[@class='interestingbox']");

[...]

//OUTPUT
[div]  {
        Content1
        Content2
}

[div]  {
a link
}

Refer to the DOMXPath page for more details.