Sort XML via attribute value PHP

Question

So I have an XML file that I am trying to loop through in order, according to the attribute, \"order\".

Here is an example:

Answer 1

This should give you what you want:

$string = <<






EOS;

$xml = simplexml_load_string($string);

$trees = $xml->xpath('/page/talentTrees/tree');
function sort_trees($t1, $t2) {
    return strcmp($t1['order'], $t2['order']);
}

usort($trees, 'sort_trees');
var_dump($trees);

$trees are now sorted by the order attribute.