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Dom\CharacterData::appendData	Dom\CharacterData::deleteData

Dom\CharacterData	Last updated: Mon, 26 Oct 2026

Dom\CharacterData::before

(PHP 8 >= 8.4.0)

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

Description

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

Adds the passed nodes before the character data.

Parameters

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

Return Values

No value is returned.

Errors/Exceptions

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.

Examples

Example #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();
?>

The above example will output:

<?xml version="1.0" encoding="UTF-8"?>
<container>hello<beautiful/><![CDATA[world]]></container>

See Also

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

Dom\CharacterData::appendData	Dom\CharacterData::deleteData

Dom\CharacterData	Last updated: Mon, 26 Oct 2026