DOMDocument::importNode

(PHP 5, PHP 7, PHP 8)

DOMDocument::importNode — Importa un nodo dentro del documento actual

Descripción

public DOMDocument::importNode(DOMNode $node, bool $deep = false): DOMNode|false

Esta función devuelve una copia del nodo a importar y le asocia con el documento actual.

Parámetros

node: El nodo que desea importar
deep: Si se establece en true, este método importará de forma recursiva el subárbol bajo el node.

Nota:
Para copiar los atributos de los nodos deep debe establecerse a true

Valores devueltos

El nodo copiado o false, si no puede ser copiado.

Errores/Excepciones

DOMException es lanzado si el nodo no puede ser importado.

Ejemplos

Ejemplo #1 DOMDocument::importNode() ejemplo

Copiando nodos entre documentos.

<?php

$orgdoc = new DOMDocument;
$orgdoc->loadXML("<root><element><child>text in child</child></element></root>");

// El nodo que se quiere importar al nuevo documento
$node = $orgdoc->getElementsByTagName("element")->item(0);


// Crear un nuevo documento
$newdoc = new DOMDocument;
$newdoc->formatOutput = true;

// Agregar marcado
$newdoc->loadXML("<root><someelement>text in some element</someelement></root>");

echo "The 'new document' before copying nodes into it:\n";
echo $newdoc->saveXML();

// Importar el nodo y todos sus hijos al documento
$node = $newdoc->importNode($node, true);
// y entonces anexarlo a el nodo "<root>"
$newdoc->documentElement->appendChild($node);

echo "\nThe 'new document' after copying the nodes into it:\n";
echo $newdoc->saveXML();
?>

El ejemplo anterior mostrará:

The 'new document' before copying nodes into it:
<?xml version="1.0"?>
<root>
  <someelement>text in some element</someelement>
</root>

The 'new document' after copying the nodes into it:
<?xml version="1.0"?>
<root>
  <someelement>text in some element</someelement>
  <element>
    <child>text in child</child>
  </element>
</root>

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User Contributed Notes 2 notes

down

c dot 1 at smithies dot org ¶

16 years ago

Assume that $source and $dest are instances of DOMDocument. Assume that $sourcedoc contains an element with ID 'sourceID' and that $destdoc contains an element with ID 'destID'. Assume that we have already set up source and destination element variables thus:

<?php
 $src = $sourcedoc->getElementById('sourceID');
 $dst = $destdoc->getElementById('destID');
?>

Finally, assume that $sel has more than one child node.

In order to import the child elements of $src as children of $dst, you might do something like this:

<?php
$src = $dest->importNode($src, TRUE);

foreach ($src->childNodes as $el) $dst->appendChild($el);
?>

But this does not work. foreach gets confused, because (as noted below) appending an imported element to another existing element in the same document causes it to be removed from its current parent element.

Therefore, the following technique should be used:

<?php
foreach ($src->childNodes as $el) $dst->appendChild($destdoc->importNode($el, TRUE));
?>

down

Fitopaldi ¶

20 years ago

importNode returns a copy of the node to import and associates it with the current document, but not import the node to the current DOMDocument. Use appendChild for import the copy of the node to current DOMDocument.

<?
 $domNode = $dom->importNode($aDomNode, true);
 $currentDomDocument->appendChild($domNode);
?>

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