DomDocument php extract info and images - php

Question

Hello I am having a problem with DomDocument. I need to do an script which extracts all the information from the tables with certain id.
So I did:
$link = "WEBSITE URL";
$html = file_get_contents($link);
$doc = new DOMDocument();
$doc->loadHTML($html);
$xpath = new DOMXPath($doc);
$context_nodes = $xpath->query('//table[#id="news"]/tr[position()>0]/td');
So I get all the <td>s and information, but the problem is that the <img> tags haven't been extracted by the script. How can I extract all the information of the tables either text or image html tags?
The html code from which I want to extract the info is:
<table id="news" width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="539" height="35"><span><strong>Info to Extract</strong></span></td>
</tr>
<tr>
<td height="35" class="texto10">Martes, 02 de Octubre de 2012 | Autor: Trovert" rel="author"></a></td>
</tr>
<tr>
<td height="35" class="texto12Gris"><p><strong>Info To extract</strong></p>
<p><strong> </strong></p>
<p><strong>Casa de Gobierno: (a 9 cuadras del hostel)</strong></p>
<img title="title" src="../images/theimage.jpg" width="400" height="266" />
</td>
</tr>
</table>
This is how I am iterating the extracted elements:
foreach ($context_nodes as $node) {
echo $node->nodeValue . '<br/>';
}
Thanks

Answer 1

If you need more than text, you'll have to try harder, not just nodeValue/textContent, but walk through the target nodes DOM branch:
function walkNode($node)
{
$str="";
if($node->nodeType==XML_TEXT_NODE)
{
$str.=$node->nodeValue;
}
elseif(strtolower($node->nodeName)=="img")
{
/* This is just a demonstration;
* You'll have to extract the info in the way you want
* */
$str.='<img src="'.$node->attributes->getNamedItem("src")->nodeValue.'" />';
}
if($node->firstChild) $str.=walkNode($node->firstChild);
if($node->nextSibling) $str.=walkNode($node->nextSibling);
return $str;
}
This is a simple, straightforward recursive function. So now you can do this:
$dom=new DOMDocument();
$dom->loadHTML($html);
$xpath=new DOMXPath($dom);
$tds=$xpath->query('//table[#id="news"]//tr[position()>0]/td');
foreach($tds as $td)
{
echo walkNode($td->firstChild);
echo "\n";
}
Online demo
(Please be noted that I "fixed" a little bit of your HTML as it doesn't seem valid; also pretty-indented a little bit)
This outputs something like this:
Info to Extract
Martes, 02 de Octubre de 2012 | Autor: Trovert
Info To extract
Casa de Gobierno: (a 9 cuadras del hostel)
<img src="../images/theimage.jpg" />

Answer 2

Try this....
foreach ($context_nodes as $node) {
echo $doc->saveHTML($node) . '<br/>';
}