DOMNode
What's not mentioned here is that DOMNode::appendChild() can also be used to move an existing node to another part of the DOMDocument, e.g.
<?php
$doc = new DOMDocument();
$doc->loadXML("<foobar><bar/><foo/></foobar>");
$bar = $doc->documentElement->firstChild;
$foo = $doc->documentElement->lastChild;
$foo->appendChild($bar);
print $doc->saveXML();
?>
This produces:
<?xml version="1.0"?>
<foobar><foo><bar/></foo></foobar>
Note that the nodes "<foo/>" and "<bar/>" were siblings, i.e. the first and last child of "<foobar>" but using appendChild() we were able to move "<bar/>" so that it is a child of "<foo/>".
This saves you the trouble of doing a DOMNode::removeChild($bar) to remove "<bar/>" before appending it as a child of "<foo/>".
Kris Dover
DOMNode::appendChild
(PHP 5)
DOMNode::appendChild — Adds new child at the end of the children
Beschreibung
This functions appends a child to an existing list of children or creates a new list of children. The child can be created with e.g. DOMDocument::createElement, DOMDocument::createTextNode etc. or simply by using any other node.
Parameter-Liste
- newnode
-
The appended child.
Rückgabewerte
The node added.
Fehler/Exceptions
- DOM_NO_MODIFICATION_ALLOWED_ERR
-
Raised if this node is readonly or if the previous parent of the node being inserted is readonly.
- DOM_HIERARCHY_REQUEST_ERR
-
Raised if this node is of a type that does not allow children of the type of the newnode node, or if the node to append is one of this node's ancestors or this node itself.
- DOM_WRONG_DOCUMENT_ERR
-
Raised if newnode was created from a different document than the one that created this node.
Beispiele
The following example will add a new element node to a fresh document.
Beispiel #1 Adding a child
<?php
$doc = new DOMDocument;
$node = $doc->createElement("para");
$newnode = $doc->appendChild($node);
echo $doc->saveXML();
?>
Siehe auch
- DOMNode::removeChild - Removes child from list of children
- DOMNode::replaceChild - Replaces a child
add a note
User Contributed NotesDOMNode::appendChild
krisdover at hotmail dot com
01-Jun-2008 03:49
01-Jun-2008 03:49
jrtayloriv at gmail dot com
30-Mar-2008 12:56
30-Mar-2008 12:56
If you want to create nested DOM elements:
<?php
$doc = new DOMDocument();
$foo = $doc->createElement("foo");
$doc->appendChild($foo);
$bar = $doc->createElement("bar");
$foo->appendChild($bar);
$bazz = $doc->createElement("bazz");
$foo->appendChild($bazz);
echo $doc->saveXML();
?>
Is equivalent to:
<foo>
<bar></bar>
<bazz></bazz>
</foo>