Search within XML with PHP code - php

Question

this is my code and i am trying to show the value of xml using Xpath but when i run this i am getting error in my code.
Here is the code
<?php
$load = new DOMDocument();
$load = simplexml_load_file("testing.xml");
var_dump($load);
$xpath = new DOMXpath($load);
var_dump($xpath);
$path1 = "/clip/metadata[name=keywords]/value";
$query = $xpath->query($path1);
var_dump("$query");
?>
this is the error, which i am getting
Catchable fatal error: Argument 1 passed to DOMXPath::__construct() must be an instance of DOMDocument, instance of SimpleXMLElement given in C:\xampp\htdocs\xml-text\index.php on line 5

Answer 1

As the error states, you are not passing the constructor the appropriate arguments. simplexml_load_file returns a SimpleXmlElement object, NOT a DOMDocument object.

Answer 2

As stated in the error, you are passing a SimpleXmlElement object instead of a DOMDocument object.
My previous answer was incorrect. It showed how to convert a SimpleXmlElement to a DOMElement not a DOMDocument.
http://php.net/manual/en/domdocument.load.php is how to properly load an xml file into a DOMDocument object.
$load = new DOMDocument();
$load->load("testing.xml");
$xpath = new DOMXpath($load);
Specifically to get the value of the node with the name Keywords you would do something like this
$load = new DOMDocument();
$load->preserveWhiteSpace = false;
$load->load(__DIR__ . "/testing.xml");
$xpath = new DOMXpath($load);
$path1 = '//clip/metadata/name[ . = "Keywords"]';
$query = $xpath->query($path1);
foreach($query as $entry) {
$value = $entry->parentNode->childNodes->item(1)->nodeValue;
}