DOMDocument::createEntityReference

(PHP 5, PHP 7)

DOMDocument::createEntityReference — Create new entity reference node

说明

public DOMEntityReference DOMDocument::createEntityReference ( string $name )

This function creates a new instance of class DOMEntityReference. 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 content of the entity reference, e.g. the entity reference minus the leading & and the trailing ; characters.

返回值

The new DOMEntityReference or FALSE if an error occurred.

错误／异常

DOM_INVALID_CHARACTER_ERR

Raised if name contains an invalid character.

参见

User Contributed Notes

alicewonder at shastaherps dot org 25-Sep-2015 04:48
It appears that this does not work with numbered entities, only named entities.

$nbspace = $dom->createEntityReference('nbsp');

works

$nbspace = $dom->createEntityReference('#160');

does not. This makes this function rather useless when generating an XSL unless you modify the XSL doctype to include the named entity for the character you want.
Tuhin Bepari 04-Nov-2013 03:00
<?php
/*Entity is a group of words which print a special symbol.
Like if we want to show copy right symbol in html page then we use &copy; code and browser convert this to actual copyright symbol.
There have lots of entity, you can find them all form http://dev.w3.org/html5/html-author/charref
if you want to use < or > or both <> into a node value than xml will give and warning or make this value as a node.
So tell the xml parser that < or > is not tag symbol it is a entity.To do that you have to right &lt(<) and &gt;(>) instead of < and > symbol.

Entity references always begin with an ampersand (&) and end with a semicolon (;).
DO not need to use & and ; symbol begin and end of entity.Remove it when you want to use it to DOMDocument::createEntityReference
Then append to to a tag where you want to show this symbol.Like below
*/
$dom=new DOMDocument("1.0","UTF-8");
$example=$dom->createElement("example","This is copyright ");
$entity=$dom->createEntityReference("copy");
$example->appendChild($entity);
$dom->appendChild($example);
echo $dom->saveXML();

output is
This is copyright ©