Php/docs/domdocument.createelementns

• PHP Manual
• DOMDocument
• Create new element node with an associated namespace

DOMDocument::createElementNS

(PHP 5, PHP 7)

DOMDocument::createElementNS — Create new element node with an associated namespace

说明

public DOMDocument::createElementNS ( string $namespaceURI , string $qualifiedName [, string $value ] ) : DOMElement

This function creates a new element node with an associated namespace. 此节点出现在文档中，除非是用诸如 DOMNode->appendChild() 等函数来将其插入。

参数

namespaceURI

The URI of the namespace.

qualifiedName

The qualified name of the element, as prefix:tagname.

value

The value of the element. By default, an empty element will be created. You can also set the value later with DOMElement::$nodeValue.

返回值

The new DOMElement or false if an error occurred.

错误／异常

DOM_INVALID_CHARACTER_ERR

Raised if qualifiedName contains an invalid character.

DOM_NAMESPACE_ERR

Raised if qualifiedName is a maformed qualified name.

范例

Example #1 Creating a new element and inserting it as root

<?php$dom = new DOMDocument('1.0', 'utf-8');$element = $dom->createElementNS('http://www.example.com/XFoo', 'xfoo:test', 'This is the root element!');// We insert the new element as root (child of the document)$dom->appendChild($element);echo $dom->saveXML();?>

以上例程会输出：

<?xml version="1.0" encoding="utf-8"?>
<xfoo:test xmlns:xfoo="http://www.example.com/XFoo">This is the root element!</xfoo:test>

Example #2 A namespace prefix example

<?php$doc  = new DOMDocument('1.0', 'utf-8');$doc->formatOutput = true;$root = $doc->createElementNS('http://www.w3.org/2005/Atom', 'element');$doc->appendChild($root);$root->setAttributeNS('http://www.w3.org/2000/xmlns/' ,'xmlns:g', 'http://base.google.com/ns/1.0');$item = $doc->createElementNS('http://base.google.com/ns/1.0', 'g:item_type', 'house');$root->appendChild($item);echo $doc->saveXML(), "\n";echo $item->namespaceURI, "\n"; // Outputs: http://base.google.com/ns/1.0echo $item->prefix, "\n";       // Outputs: gecho $item->localName, "\n";    // Outputs: item_type?>

以上例程会输出：

<?xml version="1.0" encoding="utf-8"?>
<element xmlns="http://www.w3.org/2005/Atom" xmlns:g="http://base.google.com/ns/1.0">
  <g:item_type>house</g:item_type>
</element>

http://base.google.com/ns/1.0
g
item_type

参见

• DOMNode::appendChild() - Adds new child at the end of the children
• DOMDocument::createAttribute() - Create new attribute
• DOMDocument::createAttributeNS() - Create new attribute node with an associated namespace
• DOMDocument::createCDATASection() - Create new cdata node
• DOMDocument::createComment() - Create new comment node
• DOMDocument::createDocumentFragment() - Create new document fragment
• DOMDocument::createElement() - Create new element node
• DOMDocument::createEntityReference() - Create new entity reference node
• DOMDocument::createProcessingInstruction() - Creates new PI node
• DOMDocument::createTextNode() - Create new text node