The DOMNamedNodeMap::getNamedItem() function is an inbuilt function in PHP which is used to retrieve a node specified by name. This is used to get the attribute items and further get information about the attribute.
Syntax:
php
Output:
php
Output:
DOMNode DOMNamedNodeMap::getNamedItem( string $name )Parameters: This function accepts a single parameter $name which holds the nodeName of the node to retrieve. Return Value: This function returns DOMNode with the specified name on success. Below examples illustrate the DOMNamedNodeMap::getNamedItem() function in PHP: Example 1: In this example we will get the attribute value of a element.
<?php
// Create a new DOMDocument
$dom = new DOMDocument();
// Load the XML
$dom->loadXML("<?xml version=\"1.0\"?>
<root>
<html>
<h1 id=\"first\"
class=\"first\"
style=\"color: blue\">
Geeksforgeeks
</h1>
</html>
</root>");
// Get the elements
$node = $dom->getElementsByTagName('h1')[0];
// Get the attribute value
$attribute = $node->attributes->
getNamedItem('style')->nodeValue;
echo $attribute;
?>
color: blueExample 2: In this example we will check if the function fetches the latest attribute values or not by altering the value of attribute.
<?php
// Create a new DOMDocument
$dom = new DOMDocument();
// Load the XML
$dom->loadXML("<?xml version=\"1.0\"?>
<root>
<html>
<h1 id=\"first\"
class=\"first\">
Geeksforgeeks
</h1>
<h2> Second heading </h2>
</html>
</root>");
// Get the elements
$node = $dom->getElementsByTagName('h1')[0];
echo "Before: <br>";
// Get the attribute value
$attribute = $node->attributes->
getNamedItem('class')->nodeValue;
echo $attribute;
// Change the value of attribute
$node->setAttribute('class', 'changed');
echo "<br>After: <br>";
// Get the attribute value
$attribute = $node->attributes->
getNamedItem('class')->nodeValue;
echo $attribute;
?>
Before: first After: changedReference: https://www.php.net/manual/en/domnamednodemap.getnameditem.php
