Removes child from list of children

Description

public DOMNode DOMNode::removeChild ( DOMNode $oldnode )

This functions removes a child from a list of children.

Parameters

oldnode: The removed child.

Return Values

If the child could be removed the function returns the old child.

Errors/Exceptions

DOM_NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
DOM_NOT_FOUND: Raised if oldnode is not a child of this node.

Examples

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();
?>

The above example will output:

<?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>

Example #2 Preserving the parent node's namespace URI


<?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);

// copy the namespace URI
$nsuri = $book->namespaceURI;

// Delete the child node
$book->removeChild($chapter);

// paste the namespace URI back into the parent node
$book->namespaceURI = $nsuri;
?>

Notes

Note:
After calling this method, the DOMNode::$namespaceURI property on the parent node will be reset to NULL. Above example shows how to work around it.