Which PHP DOM object has the getNodePath method?

Question

I have seen examples of usage of a getNodePath() method on PHP DOM objects.

see:

http://www.php.net/manual/en/class.domdocument.php#91072

However i cannot find the documentation for that method.

I have been going around in circles in the DOM Docs.

http://www.php.net/manual/en/book.dom.php

Any ideas?

Answer 1

You can create your own getNodeXPath() like this:

<?php
/**
* result sample : /html[1]/body[1]/span[1]/fieldset[1]/div[1]
* @return string
*/
function getNodeXPath( $node ) {    
    $result='';
    while ($parentNode = $node->parentNode) {
        $nodeIndex=-1;
        $nodeTagIndex=0;
        do {
            $nodeIndex++;
            $testNode = $parentNode->childNodes->item( $nodeIndex );

            if ($testNode->nodeName==$node->nodeName and $testNode->parentNode->isSameNode($node->parentNode) and $testNode->childNodes->length>0) {
                //echo "{$testNode->parentNode->nodeName}-{$testNode->nodeName}-{}<br/>";
                $nodeTagIndex++;
            }

        } while (!$node->isSameNode($testNode));

        $result="/{$node->nodeName}[{$nodeTagIndex}]".$result;
        $node=$parentNode;
    };
    return $result;
}
?>

This is defined here.

Answer 2

The example you linked to indicates which objects have this method:

        case ($obj instanceof DOMDocument):
            ... $obj->getNodePath() ...
            ...
        case ($obj instanceof DOMElement):
            ... $obj->getNodePath() ...
            ...

So, DOMDocument and DOMElement instances have the getNodePath() method. However, I wasn´t able to find any documentation in the official PHP docs, but I found a blog post apparently by the implementor of that method: http://blog.liip.ch/archive/2006/07/16/added-domnode-getnodepath.html