DOMImplementation::createDocumentType
(PHP 5, PHP 7, PHP 8)
DOMImplementation::createDocumentType — Creates an empty DOMDocumentType object
Description
$qualifiedName, string $publicId = "", string $systemId = ""): DOMDocumentType|falseCreates an empty DOMDocumentType object. Entity declarations and notations are not made available. Entity reference expansions and default attribute additions do not occur.
Parameters
-
qualifiedName -
The qualified name of the document type to create.
-
publicId -
The external subset public identifier.
-
systemId -
The external subset system identifier.
Return Values
A new DOMDocumentType node with its
ownerDocument set to null.
Errors/Exceptions
-
DOM_NAMESPACE_ERR -
Raised if there is an error with the namespace, as determined by
qualifiedName.
Prior to PHP 8.0.0 this method
could be called statically, but would issue an E_DEPRECATED error.
As of PHP 8.0.0 calling this method statically throws an Error exception
Examples
Example #1 Creating a document with an attached DTD
<?php
// Creates an instance of the DOMImplementation class
$imp = new DOMImplementation;
// Creates a DOMDocumentType instance
$dtd = $imp->createDocumentType('graph', '', 'graph.dtd');
// Creates a DOMDocument instance
$dom = $imp->createDocument("", "", $dtd);
// Set other properties
$dom->encoding = 'UTF-8';
$dom->standalone = false;
// Create an empty element
$element = $dom->createElement('graph');
// Append the element
$dom->appendChild($element);
// Retrieve and print the document
echo $dom->saveXML();
?>
The above example will output:
<?xml version="1.0" encoding="UTF-8" standalone="no"?> <!DOCTYPE graph SYSTEM "graph.dtd"> <graph/>
See Also
- DOMImplementation::createDocument() - Creates a DOMDocument object of the specified type with its document element
