DOMImplementation->createDocumentType()
(no version information, might be only in CVS)
DOMImplementation->createDocumentType() --
Creates an empty DOMDocumentType object
说明
class
DOMImplementation {
DOMDocumentType
createDocumentType ( [string qualifiedName [, string publicId [, string systemId]]] )
}
Creates an empty DOMDocumentType object. Entity
declarations and notations are not made available. Entity reference
expansions and default attribute additions do not occur.
参数
- qualifiedName
The qualified name of the document type to create.
- publicId
The external subset public identifier.
- systemId
The external subset system identifier.
返回值
A new DOMDocumentType node with its
ownerDocument set to NULL.
例
例子 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();
?>
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上例将输出： <?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE graph SYSTEM "graph.dtd">
<graph/> |
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异常
- DOM_NAMESPACE_ERR
Raised if there is an error with the namespace, as determined by
qualifiedName.