(PHP 5, PHP 7)
DOMNode::removeChild — Removes child from list of children
This functions removes a child from a list of children.
oldnodeThe removed child.
If the child could be removed the function returns the old child.
DOM_NO_MODIFICATION_ALLOWED_ERRRaised if this node is readonly.
DOM_NOT_FOUND
Raised if oldnode is not a child of this node.
The following example will delete the chapter element of our XML document.
Example #1 Removing a child
<?php
$doc = new DOMDocument;
$doc->load('book.xml');
$book = $doc->documentElement;
// we retrieve the chapter and remove it from the book
$chapter = $book->getElementsByTagName('chapter')->item(0);
$oldchapter = $book->removeChild($chapter);
echo $doc->saveXML();
?>
以上例程会输出：
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd">
<book id="listing">
<title>My lists</title>
</book>