deleting a childnode of a childnode?

[rune_sm]

Hey everyone

I just wanna do this simple thing... I have an XML file, that looks like this:

<site>
<picturealbums>
<album>My first Album</album>
<album>My Second Album</album>
</picturealbums>
</site>

I just want to make a simple script using dom, where I can delete a selected <album>. I can easily put a new album into the XML-file with this code:

$nodes = $dom->documentElement->childNodes;
foreach ($nodes as $subNode)
{
if ($subNode -> nodeName == 'picturealbums')
{
$subNode -> appendChild($album);
}
}

But how do I find a desire <album> and delete it? It's a problem for me, because it's a child og another childnode...

• Rune

[bpat1434]

Perhaps IDs would help you in this case. That way they're all individually identified 😉

[rune_sm]

Hey again

Can't I just write a script that does something like this:

$nodes = $dom->documentElement->picturealbums->childNodes;
foreach ($nodes as $subNode)
{
if ($subNode -> nodeValue == 'My album 1')
{
delete.....
}
}

I know the text inside the desired tag, so can't I just find it that way around? Have tried, but can't seem to get it to work..

• Rune

[bpat1434]

You should be able to do that..... Search teh boards for a similar topic (within the last 24 hours) as there has been a post about something VERY similar and they have a solution 😉

[rune_sm]

Thanx for the help... but what he does I already know how to do.. It's really a simple issue.

He has this kind of XML-file:

<root>
<element1> <stuff>........ </element1>
<element2> <stuff>........ </element2>
</root>

I have this kind of XML-file:

<root>
<picturealbums>
<album>Album 1</album>
<album>Album 2</album>
</picturealbums>
</root>

He can get a nodelist by saying:
$node_list= $root->getElementsByTagName("element1");

But that only gives me 1 element, the "picturealbums". I want to get one more step into the picturealbums, but this isn't possible:
$node_list= $root->getElementsByTagName("picturealbums")->getElementsByTagName("album");

Can you see the difference.. I want a list with all my <albums>, not just my parentnode.
And when I have used the getElementsByTagName once, it seems like it's just a list, and I can't use the object methods anymore.. :-(

Can anyone give me a quick sample?

[Weedpacket]

$doc->getElementsByTagName('picturealbums')->item(0)->getElementsByTagName('album');

[rune_sm]

thanks.. that was all I wanted :-)

I got it to work with this function.. this will delete a childnode of a childnode of the root element:

    // Find all elements with specified $tagname
	$dom = new DOMDocument;
    $dom->load($file_name);
    $root = $dom->documentElement;
    $albums = $root->getElementsByTagName('picturealbums')->item(0)->getElementsByTagName('album');	
    $num_nodes = $albums->length; //Number of matching nodes

    $lala = 0;

	foreach ($albums as $subNode) 
	{
		$parent_node = $albums->item($lala)->parentNode;

		if($subNode->textContent == $_GET["delete"])
		{
             $parent_node->removeChild($subNode);
             print("Albummet blev slettet");

             // skriver <item> ind i filen
		     $dom->save($file_name);
        }

      $lala++;
    }