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PHP | DOMElement __construct() Function

  • Last Updated : 20 Feb, 2020
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The DOMElement::__construct() function is an inbuilt function in PHP which is used to create a new DOMElement object. This object is read-only and may be appended to a document, but additional nodes may not be appended to this node until the node is associated with a document.

Syntax:

public DOMElement::__construct( string $name, string $value, string $namespaceURI )

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

  • $name: It specifies the tag name of the element.
  • $value (Optional): It specifies the value of the element.
  • $namespaceURI (Optional): It specifies the namespace URI to create the element within a specific namespace.

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

Program 1:






<?php
  
// Create a new DOMDocument
$dom = new DOMDocument();
  
// Append a new Child which is a DOMElement
$element = $dom->appendChild(new DOMElement('root'));
  
// Create another h1 element using
// DOMElement  constructor
$element_new = new DOMElement('h1',
          'Heading', 'http://sample_url');
  
// Append the child
$element->appendChild($element_new);
  
// Save the XML
echo $dom->saveXML(); 
?>

Output:

<?xml version="1.0"?>
<root><h1 xmlns="http://sample_url">Heading</h1></root>

Program 2:




<?php
  
// Create a new DOMDocument
$dom = new DOMDocument();
  
// Append a new Child which is a DOMElement
$element = $dom->appendChild(new DOMElement('root'));
  
// Create another DOMElement for mark
$element_mark = new DOMElement('mark', 'Marked');
  
// Append the child
$element->appendChild($element_mark);
  
// Create another DOMElement for break
$element_break = new DOMElement('br');
  
// Append the child
$element->appendChild($element_break);
  
// Create another DOMElement for delete
$element_delete = new DOMElement('del', 'Deleted');
  
// Append the child
$element->appendChild($element_delete);
  
// Create another DOMElement for break
$element_break = new DOMElement('br');
  
// Append the child
$element->appendChild($element_break);
  
// Create another DOMElement for bold
$element_bold = new DOMElement('b', 'Bold');
  
// Append the child
$element->appendChild($element_bold);
  
// Save the XML
echo $dom->saveXML(); 
?>

Output:

<?xml version="1.0"?>
<root>
    <mark>Marked</mark><br/>
    <del>Deleted</del><br/>
    <b>Bold</b>
</root>

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




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