SimpleXMLElement::asXML
Note that you must provide the namespace if you want to access an attribute of a non-default namespace:
Consider the following example:
<?php
$xml = <<<XML
<?xml version="1.0"?>
<Workbook xmlns="urn:schemas-microsoft-com:office:spreadsheet"
xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet">
<Table Foo="Bar" ss:ExpandedColumnCount="7">
</Table>
</Workbook>
XML;
$sxml = new SimpleXMLElement($xml);
/**
* Access attribute of default namespace
*/
var_dump((string) $sxml->Table[0]['Foo']);
// outputs: 'Bar'
/**
* Access attribute of non-default namespace
*/
var_dump((int) $sxml->Table[0]['ExpandedColumnCount']);
// outputs: 0
var_dump((int) $sxml->Table[0]->attributes('ss', TRUE)->ExpandedColumnCount);
// outputs: '7'
?>
SimpleXMLElement::attributes
(PHP 5 >= 5.0.1)
SimpleXMLElement::attributes — Identifies an element's attributes
Opis
public SimpleXMLElement SimpleXMLElement::attributes
([ string
$ns = NULL
[, bool $is_prefix = false
]] )This function provides the attributes and values defined within an xml tag.
Informacja: W SimpleXML wprowadzono zasadę dodawania pól iteracyjnych dla większości metod. Nie mogą być one przeglądane przez var_dump() ani przez nic innego co bada obiekty.
Parametry
-
ns -
An optional namespace for the retrieved attributes
-
is_prefix -
Default to
FALSE
Zwracane wartości
Returns a SimpleXMLElement object that can be iterated over to loop through the attributes on the tag.
Returns NULL if called on a SimpleXMLElement
object that already represents an attribute and not a tag.
Przykłady
Przykład #1 Interpret an XML string
<?php
$string = <<<XML
<a>
<foo name="one" game="lonely">1</foo>
</a>
XML;
$xml = simplexml_load_string($string);
foreach($xml->foo[0]->attributes() as $a => $b) {
echo $a,'="',$b,"\"\n";
}
?>
Powyższy przykład wyświetli:
name="one" game="lonely"
add a note
User Contributed Notes
SimpleXMLElement::attributes
chris at chlab dot ch
23-Mar-2012 04:16
Andrei
16-May-2011 10:46
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"];
?>
sarlak
27-Apr-2011 07:12
<?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 03:07
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
23-May-2010 04:26
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=".$node->Company);
print ("<p><hr>");
}
?>
Xeoncross
10-Apr-2010 01:46
It is really simple to access attributes using array form. However, you must convert them to strings or ints if you plan on passing the values to functions.
<?php
SimpleXMLElement Object
(
[@attributes] => Array
(
[id] => 55555
)
[text] => "hello world"
)
?>
Then using a function
<?php
function xml_attribute($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 07:21
To get an attribute in the node, use node->attributes()->attributeName
skerr at mojavi dot org
09-Dec-2004 03:55
You can also access the node as an array to get attributes:
<?php
$xml = simplexml_load_file('file.xml');
echo 'Attribute: ' . $xml['attribute'];
?>
inge at elektronaut dot no
26-May-2004 04:53
here's a simple function to get an attribute by name, based on the example
<?php
function findAttribute($object, $attribute) {
foreach($object->attributes() as $a => $b) {
if ($a == $attribute) {
$return = $b;
}
}
if($return) {
return $return;
}
}
?>