DOM and XML

[reakt]

Hi guys, this is my first time working with xml and the dom and I'm just not getting it.

 

What I need to do is reorder some nodes within an xml document, based on the value of an attribute of that node (which happens to be a number). I figured I would load the said attribtues into an array, re-order the array numerically, and then loop through the array, grabbing each node and outputting it to a new xml file, in order.

 

First off, is that a feasible way to approach the problem? It's the best I could think of with my limited knowledge of php and extremely limited knowledge of dom/xml.

 

The basic structure of the xml file looks something like this:

 

<Notice Id="125891" Sequence="6" Amount="175.06" Discount_Amount_1="17.16" Discounted_Amount_1="157.90">
</Notice>
<Notice Id="199193" Sequence="7" Amount="175.06" Discount_Amount_1="17.16" Discounted_Amount_1="157.90">
</Notice>
<Notice Id="356841" Sequence="8" Amount="175.06" Discount_Amount_1="17.16" Discounted_Amount_1="157.90">
</Notice>

 

and I need to be able to sort by the Id number.

 

If the approach I outlined above sounds ok, is anyone able to give me an idea on how to code it? Thanks

[reakt]

OK I have for the moment given up on DOM and used XMLReader instead. I still can't figure out how to write and entire node to a file. Surely there is a way to do it without parsing each child of that node? Here is what I have so far:

 

<?php

$xml = new XMLReader();
$xml->open('sample.xml');
$noticeids = array();

while ($xml->read()) {
if ($xml->name == 'Notice' AND $xml->nodeType == 1) { //apparently nodeType 1 is opening element, 15 is closing
	array_push($noticeids, $xml->getAttribute('Id'));
}
}

$xml->close;

sort($noticeids, SORT_NUMERIC);

foreach ($noticeids as $id) {
$xml = new XMLReader();
$xml->open('sample.xml');
while ($xml->read()) {
 	if ($xml->name == 'Notice' AND $xml->nodeType == 1 AND $xml->getAttribute('Id') == $id) {
		//somehow write/append the entire node to a file
	}
}
$xml->close;
}

?>

 

Any help would be greatly appreciated. Thanks!