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PHP | DOMDocument createComment() Function

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The DOMDocument::createComment() function is an inbuilt function in PHP which is used to create a new instance of class createComment. Syntax:
DOMComment DOMDocument::createComment( string $data )
Parameters: This function accepts single parameter $data which holds the content of the comment node. Return Value: This function returns the new DOMComment object on success or FALSE on failure. Below programs illustrate the DOMDocument::createComment() function in PHP: Program 1:
<?php
  
// Create a new DOMDocument
$domDocument = new DOMDocument('1.0', 'iso-8859-1');
  
// Use createComment() function to add a new comment node
$domComment = $domDocument->createComment('GeeksforGeeks');
  
// Append element to the document
$domDocument->appendChild($domComment);
  
// Save the XML file and display it
echo $domDocument->saveXML();
  
?>

                    
Output:
<?xml version="1.0" encoding="iso-8859-1"?>
<!--GeeksforGeeks-->
Program 2:
<?php
  
// Create a new DOMDocument
$domDocument = new DOMDocument('1.0', 'iso-8859-1');
  
// Use createComment() function to add a new comment node
$domComment1 = $domDocument->createComment('Starting XML document file');
$domComment2 = $domDocument->createComment('Ending XML document file');
  
// Use createElement() function to add a new element node
$domElement1 = $domDocument->createElement('organization');
$domElement2 = $domDocument->createElement('name', 'GeeksforGeeks');
$domElement3 = $domDocument->createElement('address', 'Noida');
$domElement4 = $domDocument->createElement('email', 'abc@geeksforgeeks.org');
  
// Append element to the document
$domDocument->appendChild($domComment1);
  
$domDocument->appendChild($domElement1);
$domElement1->appendChild($domElement2);
$domElement1->appendChild($domElement3);
$domElement1->appendChild($domElement4);
  
$domDocument->appendChild($domComment2);
  
// Save the XML file and display it
echo $domDocument->saveXML();
  
?>

                    
Output:
<?xml version="1.0" encoding="iso-8859-1"?>
<!--Starting XML document file-->
<organization>
    <name>GeeksforGeeks</name>
    <address>Noida</address>
    <email>abc@geeksforgeeks.org</email>
</organization>
<!--Ending XML document file-->
Reference: https://www.php.net/manual/en/domdocument.createcomment.php

Last Updated : 27 Aug, 2019
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