I am try to find if a certain node has siblings, and if it does, I would like to know what those siblings are.
Is this possible?
A:
I think using xpath is your best bet here:
<?php
$string = <<<XML
<?xml version='1.0'?>
<document>
<title>Forty What?</title>
<from>Joe</from>
<to>Jane</to>
<body>
I know that's the answer -- but what's the question?
</body>
</document>
XML;
function get_all_siblings(SimpleXMLElement $node)
{
return $node->xpath('preceding-sibling::* | following-sibling::*');
}
$xml = simplexml_load_string($string);
foreach (get_all_siblings($xml->to) as $e)
echo $e->getName()."\n";
?>
Results in:
title
from
body
konforce
2010-02-01 06:17:30
Because of the way SimpleXML works, you cannot filter the context node using `($node != $e)` as this comparison will always be true, even when both variables represent the same node.
Josh Davis
2010-02-01 07:12:08
I don't use SimpleXML enough to have realized that... I've updated my code with different xpath syntax (which I see you've already posted anyway) that makes the function basically irrelevant.
konforce
2010-02-01 07:48:42
A:
$xml = new SimpleXMLElement($xmlstr);
$xmlNode = $xml->xpath('root/yourNodeName');
$nodeCount = count($xmlNode);
Not sure if this is still useful to you
Chris
2010-02-01 06:32:01
+2
A:
In order to select a node's siblings, you have to use the corresponding XPath axe. Here is how to select all a node's siblings (ignoring the node itself)
$siblings = $node->xpath('preceding-sibling::* | following-sibling::*');
That's all you have to do.
Josh Davis
2010-02-01 07:09:25