PHP | DOMDocument createDocumentFragment() Function

PHP | DOMImplementation createDocumentType() function

Last Updated : 19 Feb, 2020

The DOMImplementation::createDocumentType() function is an inbuilt function in PHP which is used to create an empty DOMDocumentType object. Entity declarations and notations are not available.

Syntax:

DOMDocumentType DOMImplementation::createDocumentType
( string $qualifiedName = NULL, string $publicId = NULL,
 string $systemId = NULL )

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

$qualifiedName (Optional): It specifies the qualified name of the document type to create.
$publicId (Optional): It specifies the qualified name of the external subset public identifier.
$systemId (Optional): It specifies the external subset system identifier.

Return Value: This function returns DOMDocumentType node with its ownerDocument set to NULL.

Exceptions: This function throws DOM_NAMESPACE_ERR, if there is an error with the namespace, as determined by $qualifiedName.

Below given programs illustrate the DOMImplementation::createDocumentType() function in PHP:
Program 1:

<?php 
  
// Creates an instance of the DOMImplementation class 
$imp = new DOMImplementation(); 
  
// Creates a DOMDocumentType instance 
$dtd = $imp->createDocumentType( 
'svg:svg', null, 'http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd'); 
  
// Get the systemId 
echo $dtd->systemId; 
?> 

Output:

http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd

Program 2:

<?php 
// Creates an instance of the DOMImplementation class 
$imp = new DOMImplementation(); 
  
// Creates a DOMDocumentType instance 
$dtd = $imp->createDocumentType('GeeksforGeeks'); 
  
// Get the name 
echo $dtd->name; 
?> 

Output:

GeeksforGeeks

Reference: https://www.php.net/manual/en/domimplementation.createdocumenttype.php

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