PHP DOMDocument saveHTML() Function

<?php

// Create a new DOMDocument
$domDocument = new DOMDocument('1.0');

// Create a root element
$root = $domDocument->createElement('html');

// Append the element to the document as root element
$root = $domDocument->appendChild($root);

// Create a head element
$head = $domDocument->createElement('head');

// Append the element to the document
// as child element
$head = $root->appendChild($head);

// Create a title element
$title = $domDocument->createElement('title');

// Append the element to the document
// as child element
$title = $head->appendChild($title);

// Create a text node
$text = $domDocument->createTextNode(
        'DOMDocument::saveHTML() function');
        
// Add the text node the title element
$text = $title->appendChild($text);

// Create a body element
$body = $domDocument->createElement('body');

// Append the element to the document
// as child element
$body = $root->appendChild($body);

// Create a heading element
$h1 = $domDocument->createElement('h1');

// Append the element to the document
$h1 = $body->appendChild($h1);

// Create a text node
$text = $domDocument->createTextNode('GeeksforGeeks');

// Add the text node to the heading element
$text = $h1->appendChild($text);

// Create a heading element
$h2 = $domDocument->createElement('h2');

// Append the element to the document
$h2 = $body->appendChild($h2);

// Create a text node
$text = $domDocument->createTextNode(
            'DOMDocument::saveHTML() function');
            
// Add the text node to the heading element
$text = $h2->appendChild($text);

// Use saveHTML() function to create
// an HTML document
echo $domDocument->saveHTML();

?>