Select Class Name value in DOMXPath

Question

Possible Duplicate:
How to extract a node attribute from XML using PHP’s DOM Parser

I have HTML like this:

   <tr class="calendar_row" data-eventid="48256">
   ...
   </tr>

I just want to select the value or data-eventid across the web page but I don't have any idea how to do it in xpath. Is it possible?

Answer 1

You can use @ to get at attributes.

//assume $dom is a DOMDocument

$finder = new DOMXPath($dom);
//  //tr[@data-eventid] = all tr nodes that have a data-eventid attribute
//    /@data-eventid = the attribute node itself as opposed to the tr node
$nodes = $finder->query('//tr[@data-eventid]/@data-eventid');

foreach($nodes as $node) {
    echo $node->nodeValue."\n"; // echos your data-eventid value ie. 48256
}