DOMDocument::createElementNS

Create new element node with an associated namespace

&reftitle.description; public ``DOMElement``false```DOMDocument::createElementNS` ``string``null```namespace` `string` `qualifiedName` `string` `value`""

This function creates a new element node with an associated namespace. &dom.node.inserted;

&reftitle.parameters;

`namespace`

- The URI of the namespace.

`qualifiedName`

- The qualified name of the element, as `prefix:tagname`.

`value`

- The value of the element. By default, an empty element will be created. You can also set the value later with DOMElement::$nodeValue.

&reftitle.returnvalues;

The new `DOMElement` or &false; if an error occurred.

&reftitle.errors;

`DOM_INVALID_CHARACTER_ERR`

- Raised if `qualifiedName` contains an invalid character.

`DOM_NAMESPACE_ERR`

- Raised if `qualifiedName` is a malformed qualified name.

&reftitle.examples;

### Creating a new element and inserting it as root

    <?php

    $dom = new DOMDocument('1.0', 'utf-8');

    $element = $dom->createElementNS('http://www.example.com/XFoo', 'xfoo:test', 'This is the root element!');

    // We insert the new element as root (child of the document)
    $dom->appendChild($element);

    echo $dom->saveXML();
    ?>

&example.outputs;

    <?xml version="1.0" encoding="utf-8"?>
    <xfoo:test xmlns:xfoo="http://www.example.com/XFoo">This is the root element!</xfoo:test>

### A namespace prefix example

    <?php
    $doc  = new DOMDocument('1.0', 'utf-8');
    $doc->formatOutput = true;
    $root = $doc->createElementNS('http://www.w3.org/2005/Atom', 'element');
    $doc->appendChild($root);
    $root->setAttributeNS('http://www.w3.org/2000/xmlns/' ,'xmlns:g', 'http://base.google.com/ns/1.0');
    $item = $doc->createElementNS('http://base.google.com/ns/1.0', 'g:item_type', 'house');
    $root->appendChild($item);

    echo $doc->saveXML(), "\n";

    echo $item->namespaceURI, "\n"; // Outputs: http://base.google.com/ns/1.0
    echo $item->prefix, "\n";       // Outputs: g
    echo $item->localName, "\n";    // Outputs: item_type
    ?>

&example.outputs;

    <?xml version="1.0" encoding="utf-8"?>
    <element xmlns="http://www.w3.org/2005/Atom" xmlns:g="http://base.google.com/ns/1.0">
      <g:item_type>house</g:item_type>
    </element>

    http://base.google.com/ns/1.0
    g
    item_type

&reftitle.seealso;

- `DOMNode::appendChild`
- `DOMDocument::createAttribute`
- `DOMDocument::createAttributeNS`
- `DOMDocument::createCDATASection`
- `DOMDocument::createComment`
- `DOMDocument::createDocumentFragment`
- `DOMDocument::createElement`
- `DOMDocument::createEntityReference`
- `DOMDocument::createProcessingInstruction`
- `DOMDocument::createTextNode`