DOMDocument::createElement
(PHP 5, PHP 7, PHP 8)
DOMDocument::createElement — Create new element node
說明
This function creates a new instance of class DOMElement. 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
-
localName -
The tag name of the element.
-
value -
The value of the element. By default, an empty element will be created. The value can also be set later with DOMElement::$nodeValue.
The value is used verbatim except that the < and > entity references will escaped. Note that & has to be manually escaped; otherwise it is regarded as starting an entity reference. Also " won't be escaped.
返回值
Returns a new instance of class DOMElement or false
if an error occurred.
錯誤／異常
-
DOM_INVALID_CHARACTER_ERR -
Raised if
localNamecontains an invalid character.
範例
示例 #1 Creating a new element and inserting it as root
<?php
$dom = new DOMDocument('1.0', 'utf-8');
$element = $dom->createElement('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"?> <test>This is the root element!</test>
示例 #2 Passing text containing an unescaped & as value
<?php
$dom = new DOMDocument('1.0', 'utf-8');
$element = $dom->createElement('foo', 'me & you');
$dom->appendChild($element);
echo $dom->saveXML();
?>
以上例程的輸出類似於：
Warning: DOMDocument::createElement(): unterminated entity reference you in /in/BjTCg on line 4 <?xml version="1.0" encoding="utf-8"?> <foo/>
註釋
注意:
The
valuewill not be escaped. Use DOMDocument::createTextNode() to create a text node with escaping support.
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::createElementNS() - Create new element node with an associated namespace
- DOMDocument::createEntityReference() - Create new entity reference node
- DOMDocument::createProcessingInstruction() - Creates new PI node
- DOMDocument::createTextNode() - Create new text node