Adding new nodes HELP

[EKsparky]

Hi ive created a basic admin panel for a friends website so he can add news, pictures to a gallary and calander
Heres my problem i want for him to be able to add dates and content to calendar via html form
I've searched for hours on how to add new nodes to xml form tried a few different tutorials and scripts out but with no luck.
Any help would be greatly appreciated
My xml is as follows

<calendar>
<event>
	<date>2008-01-01</date>
	<title>New Year's Day</title>
	<url></url>
</event>

<event>
	<date>2008-02-05</date>
	<title>Test</title>
	<url></url>
</event>
</calendar>

this is the sort php code i seem to be finding to add nodes

<?php

#load an XML document into the DOM

$dom -> load( "calendar.xml" );



// create root element
$root = $dom->createElement("event");
$dom->appendChild($root);

// create child element
$date = $dom->createElement("date");
$root->appendChild($date);
$title = $dom->createElement("title");
$root->appendChild($title);
$url = $dom->createElement("url");
$root->appendChild($url);

// create text node
$text_date = $dom->createTextNode("2008-02-10");
$date->appendChild($text_date);

$text_title = $dom->createTextNode("testing");
$title->appendChild($text_title);

$text_url = $dom->createTextNode("www.need-help.com");
$url->appendChild($text_url);

// save and display tree
 $dom-> save ("calendar.xml");
?>

I assumed that if that worked i would just change date text and url with vars from html form

Ive chmod 777 .xml
Thanks in advance

[Weedpacket]

You don't say what the problem is, but I do see that you're trying to attach the new event to the document root instead of the <calendar> element.

$dom->firstChild->appendChild($root);

[EKsparky]

Sorry your right :o
I will have html form where user can add new event i.e date title and url
which wil ten be passed to php will will update .xml
I have not bothered with form yet just tring to get some php code that will update the xml form but nothing i try seems to work.