PHP | DOMDocument createElementNS() Function

The DOMDocument::createElementNS() function is an inbuilt function in PHP which is used to create a new element node with an associated namespace.

Syntax:

DOMElement DOMDocument::createElementNS( string $namespaceURI, 
                             string $qualifiedName, string $value )

Parameters: This function accepts three parameters as mentioned above and described below:

$namespaceURI: This parameter holds the URI of the namespace.
$qualifiedName: This parameter holds the qualified name of the element, as prefix:tagname.
$value: This parameter holds the value of the element. The default value of this parameter is empty or none, means an empty element created.

Return Value: This function returns the new DOMElement on success or FALSE on failure.

Below programs illustrate the DOMDocument::createElementNS() function in PHP:

Program 1:

<?php 
  
// Create a new DOMDocument 
$dom = new DOMDocument('1.0', 'utf-8'); 
  
// Use createElementNS() function to create new 
// element node with an associated namespace 
$element = $dom->createElementNS('https://www.geeksforgeeks.org/php', 
        'php:function', 'Welcome to GeeksforGeeks'); 
  
// Append the child element 
$dom->appendChild($element); 
  
// Create XML document and diplsy it 
echo $dom->saveXML(); 
  
?> 

Output:

<?xml version="1.0" encoding="utf-8"?>
<php:function xmlns:php="https://www.geeksforgeeks.org/php">
    Welcome to GeeksforGeeks
</php:function>

Program 2:

<?php 
  
// Create a new DOMDocument 
$dom = new DOMDocument('1.0', 'utf-8'); 
  
// Use createElementNS() function to create new 
// element node with an associated namespace 
$element1 = $dom->createElementNS('https://www.geeksforgeeks.org/php', 
        'organization:GeeksforGeeks', 'A computer science portal'); 
          
$element2 = $dom->createElementNS('https://www.geeks.org/html', 
        'php:link', 'Welcome to GeeksforGeeks'); 
          
$element3 = $dom->createElementNS('https://www.geeksforgeeks.org/algo', 
        'algo:link', 'Best coding platform'); 
  
// Append the child element 
$dom->appendChild($element1); 
$dom->appendChild($element2); 
$dom->appendChild($element3); 
  
// Create XML document and diplsy it 
echo $dom->saveXML(); 
  
?> 

Output:

<?xml version="1.0" encoding="utf-8"?>
<organization:GeeksforGeeks xmlns:organization
        ="https://www.geeksforgeeks.org/php">
    A computer science portal
</organization:GeeksforGeeks>

<php:link xmlns:php="https://www.geeks.org/html">
    Welcome to GeeksforGeeks
</php:link>

<algo:link xmlns:algo="https://www.geeksforgeeks.org/algo">
    Best coding platform
</algo:link>

Reference: https://www.php.net/manual/en/domdocument.createelementns.php

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