Dom\CharacterData::before

(PHP 8 >= 8.4.0)

Dom\CharacterData::before — Adds nodes before the character data

说明

public Dom\CharacterData::before(Dom\Node|string ...$nodes): void

Adds the passed nodes before the character data.

参数

nodes: Nodes to be added before the node. Strings are automatically converted to text nodes.

返回值

没有返回值。

错误／异常

DOM_HIERARCHY_REQUEST_ERR: Raised if the parent is of a type that does not allow children of the type of one of the passed nodes, or if the node to put in is one of this node's ancestors or this node itself.
DOM_WRONG_DOCUMENT_ERR: Raised if one of the passed nodes was created from a different document than the one that created this node.

示例

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>

参见

Dom\ChildNode::before() - Adds nodes before the node
Dom\CharacterData::after() - Adds nodes after the character data

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