DOMImplementation::createDocumentType
(PHP 5)
DOMImplementation::createDocumentType — Creates an empty DOMDocumentType object
Description
$qualifiedName = NULL
[, string $publicId = NULL
[, string $systemId = NULL
]]] )Creates 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.
This method may be called statically, but will issue an E_STRICT error.
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
- PHP Руководство
- Функции по категориям
- Индекс функций
- Справочник функций
- Обработка XML
- Document Object Model
- Функция DOMImplementation::__construct() - Создает новый объект класса DOMImplementation
- Функция DOMImplementation::createDocument() - Создает объект класса DOMDocument заданного типа с элементом document
- Функция DOMImplementation::createDocumentType() - Создает пустой объект класса DOMDocumentType
- Функция DOMImplementation::hasFeature() - Тестирует реализацию специфичных возможностей объекта DOMImplementation
Коментарии
I had problems to use a DTD from a file. It needed to be resolved relatively and it contained characters that made DomDocument failed to resolve the file.
Encoding and an absolute filename did not help much. So I used the data:// streamwrapper ( wrappers.data ) as a work-around:
<?php
// relative or absolute filename
$path = '...';
// convert file contents into a filename
$data = file_get_contents($path);
$systemId = 'data://text/plain;base64,'.base64_encode($data);
// ...
// Creates a DOMDocumentType instance
$dtd = $aImp->createDocumentType('qualified name', '', $systemId);
?>
Works like a charm.