(PHP 8 >= 8.4.0)
Dom\CharacterData::before — Adds nodes before the character data
Adds the passed nodes before the character data.
nodesNodes to be added before the node. Strings are automatically converted to text nodes.
没有返回值。
DOM_HIERARCHY_REQUEST_ERRnodes, or if the node to
put in is one of this node's ancestors or this node itself.
DOM_WRONG_DOCUMENT_ERRnodes was created from a different
document than the one that created this node.
示例 #1 Dom\CharacterData::before() example
Adds nodes before the character data.
<?php
$doc = Dom\XMLDocument::createFromString("<container><![CDATA[world]]></container>");
$cdata = $doc->documentElement->firstChild;
$cdata->before("hello", $doc->createElement("beautiful"));
echo $doc->saveXML();
?>以上示例会输出：
<?xml version="1.0"?> <container>hello<beautiful/><![CDATA[world]]></container>