SimpleXMLElement::asXML
Reading the attributes of the root element with name space prefixes as in an Atom feed
<feed xmlns="http://www.w3.org/2005/Atom" xmlns:openSearch="http://a9.com/-/spec/opensearch/1.1/" xmlns:gd="http://schemas.google.com/g/2005" gd:etag="W/"Ck4EQXYzeCp7ImA9WhZWFE4."">
<?php
$xml = @simplexml_load_file($feed);
$att_gd = $xml->attributes("gd",1);
$Etag = $att_gd["etag"];
?>
SimpleXMLElement::attributes
(PHP 5 >= 5.0.1)
SimpleXMLElement::attributes — Identifica el atributo de un elemento
Descripción
public SimpleXMLElement SimpleXMLElement::attributes
([ string $ns = NULL
[, bool $is_prefix = false
]] )
Esta función provee de los atributos y valores definidos dentro de una etiqueta XML.
Note: SimpleXML ha desarrollado una regla para el añadido de propiedades iterativas a la mayoría de métodos. No pueden ser examinados usando var_dump() ni con cualquier otra función que examine objetos.
Parámetros
- ns
-
Un namespace opcional para los atributos recuperados
- is_prefix
-
Por defecto FALSE
Valores devueltos
Devuelve un objeto SimpleXMLElement que puede ser iterado a través de los atributos en la etiqueta.
Devuelve NULL si se invoca sobre un objeto SimpleXMLElement que ya representa un atributo y no una etiqueta.
Ejemplos
Example #1 Interpreta un string XML
<?php
$string = <<<XML
<a>
<prueba nombre="uno" juego="solitario">1</prueba>
</a>
XML;
$xml = simplexml_load_string($string);
foreach($xml->prueba[0]->attributes() as $a => $b) {
echo $a,'="',$b,"\"\n";
}
?>
El resultado del ejemplo sería:
nombre="uno" juego="solitario"
add a note
User Contributed Notes
SimpleXMLElement::attributes
Andrei
16-May-2011 11:46
sarlak
27-Apr-2011 08:12
<?php
$att = 'attribueName';
// You can access an element's attribute just like this :
$attribute = $element->attributes()->$att;
// This will save the value of the attribute, and not the objet
$attribute = (string)$element->attributes()->$att;
// You also can edit it this way :
$element->attributes()->$att = 'New value of the attribute';
?>
leap
02-Apr-2011 05:07
If you want to save the value of an attribute into an array, typecast it to a string.
<?php
// stores an xml-element-object
$dataStore['value'] = $attributes->myValue
// stores the value of the attribute
$dataStore['value'] = (string)$attributes->myValue
?>
alan at performantsystems dot com
24-May-2010 05:26
So lets say you have database type data in an XML string called $xmlstring with the key or item ID as an XML Attribute and all content data as regular XML Elements, as above. SimpleXML processes the Attributes as an array, so we can play along and push the Attributes into an array. Then we can get the value of any specific Attribute we want by addressing it by name, such as "ID".
Considering this data:
<?xml version="1.0" encoding="utf-8"?>
<data>
<item ID="30001">
<Company>Navarro Corp.</Company>
</item>
<item ID="30002">
<Company>Performant Systems</Company>
</item>
<item ID="30003">
<Company>Digital Showcase</Company>
</item>
</data>
Example of listing both the ID Attribute and Company Element values:
<?php
$xmlObject = new SimpleXMLElement($xmlstring);
foreach ($xmlObject->children() as $node) {
$arr = $node->attributes(); // returns an array
print ("ID=".$arr["ID"]); // get the value of this attribute
print (" Company=".$node->Company);
print ("<p><hr>");
}
?>
Xeoncross
11-Apr-2010 02:46
It is really simple to access attributes using array form. However, you must convert them to strings or ints if you plan on passing the values to functions.
<?php
SimpleXMLElement Object
(
[@attributes] => Array
(
[id] => 55555
)
[text] => "hello world"
)
?>
Then using a function
<?php
function xml_attribute($object, $attribute)
{
if(isset($object[$attribute]))
return (string) $object[$attribute];
}
?>
I can get the "id" like this
<?php
print xml_attribute($xml, 'id'); //prints "55555"
?>
gillllberg at gmail dot com
04-Nov-2009 10:21
To get an attribute in the node, use node->attributes()->attributeName
skerr at mojavi dot org
10-Dec-2004 06:55
You can also access the node as an array to get attributes:
<?php
$xml = simplexml_load_file('file.xml');
echo 'Attribute: ' . $xml['attribute'];
?>
inge at elektronaut dot no
26-May-2004 05:53
here's a simple function to get an attribute by name, based on the example
<?php
function findAttribute($object, $attribute) {
foreach($object->attributes() as $a => $b) {
if ($a == $attribute) {
$return = $b;
}
}
if($return) {
return $return;
}
}
?>