PHP | DOMImplementation createDocument() Function

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The DOMImplementation::createDocument() function is an inbuilt function in PHP which is used to create a DOMDocument object of the specified type with its document element.

Syntax:

DOMDocument DOMImplementation::createDocument( string $namespaceURI = NULL, 
string $qualifiedName = NULL, DOMDocumentType $doctype = NULL )

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

$namespaceURI (Optional): It specifies the namespace URI of the document element to create.
$qualifiedName (Optional): It specifies the qualified name of the document element to create.
$doctype (Optional): It specifies the type of document to create or NULL.

Return Value: This function returns DOMDocument object on success.

Exceptions: This function throws DOM_WRONG_DOCUMENT_ERR, if doctype has already been used with a different document or was created from a different implementation or DOM_NAMESPACE_ERR, if there is an error with the namespace, as determined by $namespaceURI and $qualifiedName.

Below examples illustrate the DOMImplementation::createDocument() function in PHP:

Example 1:

<?php 
  
// Create a DOMImplementation instance 
$documentImplementation = new DOMImplementation(); 
   
// Create a document 
$document = $documentImplementation->createDocument(null, 'html'); 
   
// Get the document element 
$html = $document->documentElement; 
   
// Create a HTML element 
$head = $document->createElement('html'); 
  
// Create a strong element 
$title = $document->createElement('strong'); 
$text = $document->createTextNode('zambiatek'); 
$body = $document->createElement('body'); 
   
// Append the children 
$title->appendChild($text); 
$head->appendChild($title); 
$html->appendChild($head); 
$html->appendChild($body); 
   
// Render the XML 
echo $document->saveXML(); 
?> 

Output:

Example 2:

<?php 
  
// Create a DOMImplementation instance 
$documentImplementation = new DOMImplementation(); 
   
// Create a document 
$document = $documentImplementation->createDocument(null, 'html'); 
   
// Get the document element 
$html = $document->documentElement; 
   
// Create a HTML element 
$head = $document->createElement('html'); 
  
// Create a paragraph element 
$p = $document->createElement('p'); 
  
// Create a text node 
$text = $document->createTextNode('zambiatek'); 
   
// Append the children 
$p->appendChild($text); 
  
// Set the CSS using attribute  
$p->setAttribute('style', 'color:blue;font-size:100px'); 
  
// Append paragraph to the head of document 
$head->appendChild($p); 
  
// Append head to the html 
$html->appendChild($head); 
   
// Render the XML 
echo $document->saveXML(); 
?> 