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PHP | DOMComment __construct() Function
  • Last Updated : 14 Feb, 2020

The DOMComment::__construct() function is an inbuilt function in PHP which creates a new DOMComment object. This object is read only and can be appended to a document

Syntax:

public DOMComment::__construct( string $value)

Parameters: This function accepts a single parameter $value which holds the comment.

Below given programs illustrate the DOMComment::__construct() function in PHP:

Program 1 (Simple comment):



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<?php
  
// Create a new DOM Document
$dom = new DOMDocument('1.0', 'iso-8859-1');
  
// Create a h1 element
$element = $dom->appendChild(new DOMElement('h1'));
  
// Create a DOMComment
$comment = $element->appendChild(
        new DOMComment('This line is a comment'));
  
echo $dom->saveXML();
?>

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Output:

<?xml version="1.0" encoding="iso-8859-1"?>
<h1><!--This line is a comment--></h1>

Program 2 (Using comments with elements):

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<?php
  
// Create a new DOM Document
$dom = new DOMDocument('1.0', 'iso-8859-1');
  
// Create a h1 element
$element = $dom->appendChild(new DOMElement('h1'));
  
// Create a DOMCdataSection 
$comment = $element->appendChild(new DOMComment(
        'This line is a comment about content'));
  
// Create a div element
$element = $element->appendChild(new DOMElement(
          'div', 'This is the actual content'));
  
echo $dom->saveXML();
?>

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Output:

<?xml version="1.0" encoding="iso-8859-1"?>
<h1><!--This line is a comment about content-->
<div>This is the actual content</div></h1>

Reference: https://www.php.net/manual/en/domcomment.construct.php




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