DOMImplementation::createDocument

(PHP 5, PHP 7, PHP 8)

DOMImplementation::createDocument — Creates a DOMDocument object of the specified type with its document element

说明

public DOMImplementation::createDocument(?string $namespace = null, string $qualifiedName = "", ?DOMDocumentType $doctype = null): DOMDocument|false

Creates a DOMDocument object of the specified type with its document element.

参数

namespace: The namespace URI of the document element to create.
qualifiedName: The qualified name of the document element to create.
doctype: The type of document to create or null.

返回值

A new DOMDocument object. If namespace, qualifiedName, and doctype are null, the returned DOMDocument is empty with no document element

错误／异常

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

在 PHP 8.0.0 之前可以静态调用此方法，但会发出 E_DEPRECATED 错误。自 PHP 8.0.0 起，静态调用此方法会抛出 Error 异常

更新日志

版本	说明
8.0.3	`namespace` is now nullable.
8.0.0	`doctype` is now nullable.

参见

DOMDocument::__construct() - Creates a new DOMDocument object
DOMImplementation::createDocumentType() - Creates an empty DOMDocumentType object

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User Contributed Notes 3 notes

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eboyjr ¶

11 years ago


To add on to the other example, here's how to create an XHTML 1.0 transitional document with head, title, and body elements.

<?php

$document = DOMImplementation::createDocument(null, 'html',
    DOMImplementation::createDocumentType("html", 
        "-//W3C//DTD XHTML 1.0 Transitional//EN", 
        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"));
$document->formatOutput = true;

$html = $document->documentElement;
$head = $document->createElement('head');
$title = $document->createElement('title');
$text = $document->createTextNode('Title of Page');
$body = $document->createElement('body');

$title->appendChild($text);
$head->appendChild($title);
$html->appendChild($head);
$html->appendChild($body);

echo $document->saveXML();
?>

This outputs: (http links removed due to spam)

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "doctype.dtd"> 
<html xmlns="w3org1999xhtml"> 
  <head> 
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> 
    <title>Title of Page</title> 
  </head> 
  <body></body> 
</html> 

Note the saveXML function. If saveHTML was used instead, you get the output:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "doctype.dtd"> 
<html> 
<head><title>Title of Page</title></head> 
<body></body> 
</html>

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arturm at union dot com dot pl ¶

16 years ago


To create HTML document with doctype:


<?php

$doctype = DOMImplementation::createDocumentType("html",

                "-//W3C//DTD HTML 4.01//EN",

                "http://www.w3.org/TR/html4/strict.dtd");

$doc = DOMImplementation::createDocument(null, 'html', $doctype);

?>

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-1

sleistico at gmail dot com ¶

3 years ago


I just recently got an error, having to do with deprecation, by using the type of calls in the other example listed here.  What I had to do instead looks like this...

$htmldoc = (new DOMImplementation)->createDocument(null, 'html', (new DOMImplementation)->createDocumentType("html"));

This creates a document with <!DOCTYPE html> at the top of it.

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备份地址：http://www.lvesu.com/blog/php/domimplementation.createdocument.php