Php/docs/domdocument.createelement

• PHP Manual
• DOMDocument
• Create new element node

DOMDocument::createElement

(PHP 5, PHP 7)

DOMDocument::createElement — Create new element node

说明

public DOMDocument::createElement ( string $name [, string $value ] ) : DOMElement

This function creates a new instance of class DOMElement. 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

name

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.

错误／异常

DOM_INVALID_CHARACTER_ERR

Raised if name contains an invalid character.

范例

Example #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();?>

以上例程会输出：

<?xml version="1.0" encoding="utf-8"?>
<test>This is the root element!</test>

Example #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();?>

以上例程的输出类似于：

Warning: DOMDocument::createElement(): unterminated entity reference             you in /in/BjTCg on line 4
<?xml version="1.0" encoding="utf-8"?>
<foo/>

注释

Note:

The value will not be escaped. Use DOMDocument::createTextNode() to create a text node with escaping support.

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::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