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DOMElement::removeAttribute> <DOMElement::hasAttribute
[edit] Last updated: Fri, 17 May 2013

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DOMElement::hasAttributeNS

(PHP 5)

DOMElement::hasAttributeNS Comprueba si un atributo existe

Descripción

bool DOMElement::hasAttributeNS ( string $namespaceURI , string $localName )

Indica si un atributo en el espacio de nombres namespaceURI llamado localName existe como miembro del elemento.

Parámetros

namespaceURI

La URI del espacio de nombres.

localName

El nombre local.

Valores devueltos

Devuelve TRUE en caso de éxito o FALSE en caso de error.

Ver también



add a note add a note User Contributed Notes DOMElement::hasAttributeNS - [1 notes]
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chad dot retz at gmail dot com
5 years ago
This does not work as expected (at least on 5.2.5) with attributes in the default namespace. For instance:

<?php
$dom
= new DOMDocument();
$dom->loadXML('<?xml version="1.0"?><element xmlns="testns" attr="testval" />');
var_dump($dom->documentElement->hasAttributeNS('testns', 'attr'));
?>

returns bool(false) whereas:

<?php
$dom
= new DOMDocument();
$dom->loadXML('<?xml version="1.0"?><element xmlns:ns1="testns" ns1:attr="testval" />');
var_dump($dom->documentElement->hasAttributeNS('testns', 'attr'));
?>

returns bool(true). NULL does work properly in the namespaceURI parameter, so changing my initial example to:

<?php
$dom
= new DOMDocument();
$dom->loadXML('<?xml version="1.0"?><element xmlns="testns" attr="testval" />');
var_dump($dom->documentElement->hasAttributeNS(NULL, 'attr'));
?>

returns bool(true) as expected. Or even better for when you don't know whether the NS will be default:

<?php
$dom
= new DOMDocument();
$dom->loadXML('<?xml version="1.0"?><element xmlns="testns" attr="testval" />');
var_dump($dom->documentElement->hasAttributeNS(
   
is_null($dom->documentElement->lookupPrefix('testns')) ? NULL : 'testns', 'attr'));
?>

 
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