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|null $namespace = null , string $qualifiedName = "" , DOMDocumentType|null $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.

此方法可以被静态调用,但会抛出一个 E_STRICT 错误。

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

User Contributed Notes

sleistico at gmail dot com 02-Jul-2018 03:48


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.

eboyjr 22-Jul-2010 12:48


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=gb2312" /> 

    <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>

arturm at union dot com dot pl 06-May-2006 10:23


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);


?>