DOMDocument::createElementNS
(PHP 5, PHP 7, PHP 8)
DOMDocument::createElementNS — Create new element node with an associated namespace
說明
$namespace, string $qualifiedName, string $value = ""): DOMElement|falseThis function creates a new element node with an associated namespace. 此節點出現在文件中，除非是用諸如 DOMNode->appendChild() 等函式來將其插入。
參數
-
namespace -
The URI of the namespace.
-
qualifiedName -
The qualified name of the element, as
prefix:tagname. -
value -
The value of the element. By default, an empty element will be created. You can also set the value later with DOMElement::$nodeValue.
返回值
The new DOMElement or false if an error occurred.
錯誤／異常
-
DOM_INVALID_CHARACTER_ERR -
Raised if
qualifiedNamecontains an invalid character. -
DOM_NAMESPACE_ERR -
Raised if
qualifiedNameis a malformed qualified name.
範例
示例 #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();
?>
以上例程會輸出：
<?xml version="1.0" encoding="utf-8"?> <xfoo:test xmlns:xfoo="http://www.example.com/XFoo">This is the root element!</xfoo:test>
示例 #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/1.0
echo $item->prefix, "\n"; // Outputs: g
echo $item->localName, "\n"; // Outputs: item_type
?>
以上例程會輸出：
<?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
參見
- 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