Can someone explain this code for me?

[twittoris]

i found some code that is helping me extract a table. Currently it works and extracts every single table row however it duplicates some of the rows. I am new to XPATH and would appreciate if someone could comment the following code so that I can alter it to meet my needs. Thanks.

$newDom->appendChild($newDom->importNode($item,true));

  	$xpath = new DOMXPath( $newDom ); 

  	foreach ($item->attributes as $attribute) { 

    for ($node = $item->firstChild; $node !== NULL; 
         $node = $node->nextSibling) {
      if (($attribute->nodeName =='valign') && ($attribute->nodeValue=='top'))
      {
        print($node->nodeValue); 
      }
      else
      {
        print("<br>".$node->nodeValue);
      }
    }
    print("<br>");

 

[twittoris]

Also, Is it possible to store each table row in an array?