PHP XML file filter on match - php

Question

I am having a heck of a time getting this working...
What I want to do is filter a xml file by a city (or market in this case).
This is the xml data.
<itemset>
<item>
<id>2171</id>
<market>Vancouver</market>
<url>http://</url></item>
<item>
<id>2172</id>
<market>Toronto</market>
<url>http://</url></item>
<item>
<id>2171</id>
<market>Vancouver</market>
<url>http://</url></item>
This is my code...
<?php
$source = 'get-xml-feed.php.xml';
$xml = new SimpleXMLElement($source);
$result = $xml->xpath('//item/[contains(market, \'Toronto\')]');
while(list( , $node) = each($result)) {
echo '//Item/[contains(Market, \'Toronto\')]',$node,"\n";
}
?>
If I can get this working I would like to access each element, item[0], item[1] base on filtered results.
Thanks

Answer 1

I think this implements what you are looking for using XPath:
<?php
$source = file_get_contents('get-xml-feed.php.xml');
$xml = new SimpleXMLElement($source);
foreach ($xml as $node)
{
$row = simplexml_load_string($node->asXML());
$result = $row->xpath("//item/market[.='Toronto']");
if ($result[0])
{
var_dump($row);
}
}
?>
As another answer mentioned, unless you are wed to the use of XPath it's probably more trouble than it's worth for this application: just load the XML and treat the result as an array.

Answer 2

I propose using simplexml_load_file. The learning curve is less step than using the specific XML objects + XPath. It returns an object in the format you descibe.
Try this and you'll see what I mean:
<?php
$source = 'get-xml-feed.php.xml';
$xml = simplexml_load_file($source);
var_dump($xml);
?>
There is also simplexml_load_string if you just have an XML snippet.

Answer 3

<?php
$source = 'get-xml-feed.php.xml';
//$xml = new SimpleXMLElement($source);
$dom = new DOMDocument();
#$dom->loadHTMLFile($source);
$xml = simplexml_import_dom($dom);
$result = $xml->xpath("//item/market[.='Toronto']/..");
while(list( , $node) = each($result)) {
print_r($node);
}
?>
This will get you the parent nodeset when it contains a node with "Toronto" in it. It returns $node as a simplexml element so you will have to deal with it accordingly (I just printed it as an array).