PHP | DOMAttr __construct() Function

Last Updated : 25 Sep, 2019
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The DOMAttr::__construct() function is an inbuilt function in PHP which is used to create a new DOMAttr object. This created object is a read-only type. Syntax: 
public DOMAttr::__construct( string $name, string $value )
Parameters: This function accepts two parameters as mentioned above and described below:
  • $name: This parameter holds the element name of the attribute.
  • $value: This parameter holds the value of the attribute.
Below programs illustrate the DOMAttr::__construct() function in PHP: Program 1: php 
<?php

// Create a new DOMDocument object
$domDocument = new DOMDocument('1.0', 'iso-8859-1');

// Create a root element
$rootElement = new DOMElement('root');

// Append the element as child element 
$element = $domDocument->appendChild($rootElement);

// Create an attribute
$domAttr = new DOMAttr('attr', 'GeeksforGeeks');

// Set the attribute to the node
$attr = $element->setAttributeNode($domAttr);

// Display the XML document
echo $domDocument->saveXML(); 

?>
Output: 
<?xml version="1.0" encoding="iso-8859-1"?>
<root attr="GeeksforGeeks"/>
Program 2: php 
<?php
 
// Create a new DOMDocument object
$domDocument = new DOMDocument('1.0', 'iso-8859-1');
 
// Create a root element
$rootElement = new DOMElement('root');

// Append the element as child element
$element = $domDocument->appendChild($rootElement);
 
// Create an attribute
$domAttr1 = new DOMAttr('Name', 'GeeksforGeeks');

// Set the attribute to the node
$attr = $element->setAttributeNode($domAttr1);
 
// Create an attribute
$domAttr2 = new DOMAttr('Address', 'Noida');

// Set the attribute to the node
$attr = $element->setAttributeNode($domAttr2);
 
// Create an attribute
$domAttr3 = new DOMAttr('mail', 'abc@geeksforgeeks.org');

// Set the attribute to the node
$attr = $element->setAttributeNode($domAttr3);
 
// Display the XML document
echo $domDocument->saveXML(); 
 
?>
Output: 
<?xml version="1.0" encoding="iso-8859-1"?>
<root Name="GeeksforGeeks" Address="Noida" mail="abc@geeksforgeeks.org"/>
Reference: https://www.php.net/manual/en/domattr.construct.php

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