SimpleXMLElement->asXML()
You can also use
<?php $element->attributes()->attrname; ?>
SimpleXMLElement->attributes()
(PHP 5 >= 5.0.1)
SimpleXMLElement->attributes() — Identifies an element's attributes
Description
SimpleXMLElement
SimpleXMLElement attributes
([ string $ns
[, bool $is_prefix
]] )
This function provides the attributes and values defined within an xml tag.
Note: SimpleXML has made a rule of adding iterative properties to most methods. They cannot be viewed using var_dump() or anything else which can examine objects.
Parameters
- ns
-
An optional namespace for the retrieved attributes
- is_prefix
-
Default to FALSE
Return Values
Examples
Example #1 Interpret an XML string
<?php
$string = <<<XML
<a xmlns:b>
<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";
}
?>
The above example will output:
name="one" game="lonely"
add a note
User Contributed NotesSimpleXMLElement->attributes()
someguy at anon dot com
01-May-2008 05:07
01-May-2008 05:07
kekoav
19-Dec-2007 11:17
19-Dec-2007 11:17
For the silly looping getAttribute function below, substitute:
<?php
public function getAttribute($name){
$attrs = $this->attributes();
return $attrs[$name];
}
?>
studio at dfwstudios dot com
11-Mar-2007 06:28
11-Mar-2007 06:28
I expanded a bit (not very impressive, I admit) on the user submitted class for extending simple xml.
Below are some nice quick and dirty additional class functions I have needed to manage the back end for plugging in flash parameters to dynamic actionscripted .swf files needing this xml data generated dynamically and with working variable xml content data that the client maintains (yikes!). Probably need some bad character checking in here somewhere?
<?php
$xml_data = '<?xml version="1.0" encoding="ISO8859-1" ?>
<root>
<image name="Banner 1" file="pic1.jpg" />
<image name="Banner 2" file="pic2.jpg" />
<image name="Banner 3" file="pic3.jpg" />
<image name="Banner 4" file="pic4.jpg" />
</root>';
class SimpleXMLElementExtended extends SimpleXMLElement{
public function getAttribute($name){
foreach($this->attributes() as $key=>$val){
if($key == $name){
return (string)$val;
}// end if
}// end foreach
}// end function getAttribute
public function getAttributeNames(){
$cnt = 0;
$arrTemp = array();
foreach($this->attributes() as $a => $b) {
$arrTemp[$cnt] = (string)$a;
$cnt++;
}// end foreach
return (array)$arrTemp;
}// end function getAttributeNames
public function getChildrenCount(){
$cnt = 0;
foreach($this->children() as $node){
$cnt++;
}// end foreach
return (int)$cnt;
}// end function getChildrenCount
public function getAttributeCount(){
$cnt = 0;
foreach($this->attributes() as $key=>$val){
$cnt++;
}// end foreach
return (int)$cnt;
}// end function getAttributeCount
public function getAttributesArray($names){
$len = count($names);
$arrTemp = array();
for($i = 0; $i < $len; $i++){
$arrTemp[$names[$i]] = $this->getAttribute((string)$names[$i]);
}// end for
return (array)$arrTemp;
}// end function getAttributesArray
}
$xml2 = new SimpleXMLElementExtended($xml_data);
print('<pre>');
print('NUMBER OF CHILDREN: '.$xml2->getChildrenCount());
print('</pre>');
print('<pre>');
print('ATTRIBUTE COUNT PER CHILD: '.$xml2->image[0]->getAttributeCount());
print('</pre>');
print('<pre>');
print('CHILD 0 ATTRIBUTE "name": '.$xml2->image[0]->getAttribute('name'));
print('</pre>');
print('<pre>');
print('CHILD 0 ATTRIBUTE "file": '.$xml2->image[0]->getAttribute('file'));
print('</pre>');
$arrTemp = array('name', 'file');
$arrResult = array();
$arrResult = $xml2->image[0]->getAttributesArray($arrTemp);
print('<pre>');
print('CHILD 0 ATTRIBUTE ARRAY: "name,file":<br>');
print(var_dump($arrResult));
print('</pre>');
$arrResult = array();
$arrResult = $xml2->image[0]->getAttributeNames();
print('<pre>');
print('CHILD 0 ATTRIBUTE NAMES ARRAY:<br>');
print(var_dump($arrResult));
print('</pre>');
print('<hr>');
$arrCompiled = array();
$arrCompiled = $xml2->image[0]->getAttributesArray($arrResult);
print('<pre>');
print('CHILD 0 DYNAMIC COMPILED ATTRIBUTE ARRAY: "key,value"<br>');
print(var_dump($arrCompiled));
print('</pre>');
?>
Outputs something along these lines below:
NUMBER OF CHILDREN: 4
ATTRIBUTE COUNT PER CHILD: 2
CHILD 0 ATTRIBUTE "name": Banner 1
CHILD 0 ATTRIBUTE "file": pic1.jpg
CHILD 0 ATTRIBUTE ARRAY: "name,file":
array(2) {
["name"]=>
string(8) "Banner 1"
["file"]=>
string(8) "pic1.jpg"
}
CHILD 0 ATTRIBUTE NAMES ARRAY:
array(2) {
[0]=>
string(4) "name"
[1]=>
string(4) "file"
}
CHILD 0 DYNAMIC COMPILED ATTRIBUTE ARRAY: "key,value"
array(2) {
["name"]=>
string(8) "Banner 1"
["file"]=>
string(8) "pic1.jpg"
}
I'm sure there is more to add/revise/simplify, but it's a fast start to working with fairly simple xml schema/structures.
Would be interested is anyone knows of how we could revise this class to say perhaps evaluate the nodes AND attributes for the same xml element... like image id attribute with say 4 image file name elements?
Peace.
skerr at mojavi dot org
10-Dec-2004 08:55
10-Dec-2004 08:55
You can also access the node as an array to get attributes:
<?php
$xml = simplexml_load_file('file.xml');
echo 'Attribute: ' . $xml['attribute'];
?>
christian at koch dot net
08-Nov-2004 10:35
08-Nov-2004 10:35
PHP5:: I think this is a fine solution to get the attributes easier...
<?php
class EFXMLElement extends SimpleXMLElement {
function attributes() {
return new EFXMLAttributes(parent::attributes());
}
}
class EFXMLAttributes {
private $attributes;
function __construct($attributes) {
$this->attributes = $attributes;
}
function __get($name) {
if (isset($this->attributes[$name])) {
return $this->attributes[$name];
} else {
return false;
}
}
}
if (file_exists('pref.xml')) {
$tst = new EFXMLElement(file_get_contents('pref.xml'));
var_dump($tst->plugins->plugin[0]->attributes()->name);
} else {
exit('Failed to open test.xml.');
}
?>
XML::example
<?xml version="1.0" encoding="ISO8859-1" ?>
<preferences>
<system>
EF3
</system>
<websites>
<website name="demo">
<scriptpath>/</scriptpath>
</website>
<website name="other">
x
</website>
</websites>
<plugins>
<plugin type="single" name="content" ontemplate="yes">
<tag><![CDATA[<%content%>]]></tag>
<class>EFContentPlugin</class>
<source>/ef3/plugins/EFContentPlugin.class</source>
</plugin>
<plugin type="single" name="attribute" ontemplate="no">
<tag><![CDATA[<%attribute @%>]]></tag>
<class>EFAttributePlugin</class>
<source>/ef3/plugins/EFAttributePlugin.class</source>
</plugin>
<plugin type="single" name="component" ontemplate="no">
<tag><![CDATA[<%component @%>]]></tag>
<class>EFComponentPlugin</class>
<source>/ef3/plugins/EFComponentPlugin.class</source>
</plugin>
<plugin type="double" name="klammer" ontemplate="no">
<tag><![CDATA[<KLAMMER@>]]></tag>
<closer><![CDATA[<KLAMMER@>]]></closer>
<class>KlammerPlugin</class>
<source>/ef3/plugins/KlammerPlugin.class</source>
</plugin>
</plugins>
</preferences>
sveta at microbecal dot com
30-Oct-2004 01:03
30-Oct-2004 01:03
Namespace handling example:
------------------------------------
test.xml:
<?xml version="1.0"?>
<Workbook xmlns="http://url1" xmlns:ss="http://url2">
<Worksheet ss:Name="English">
</Worksheet>
</Workbook>
script.php:
$xml_file = 'test.xml';
$xml = simplexml_load_file($xml_file);
foreach($xml->Worksheet->attributes('http://url2')
as $a => $b) {
echo $a,'="',$b,"\"\n";
}
tychay at php dot net
29-Sep-2004 08:04
29-Sep-2004 08:04
BTW, It occurs to me that why do you need the function anyway? You just access it directly as (string) $object[$attribute].
tychay at php dot net
29-Sep-2004 02:31
29-Sep-2004 02:31
Why bother iterating over all the elements when they are already indexed? something like...
function simplexml_find_attribute(SimpleXMLElement $element, $attributeName) {
$attrs = $element->attributes();
if (isset($attrs[$attributeName])) {
return (string) $attrs[$attributeName];
}
return false;
}
- terry
Eirik Sletteberg
12-Sep-2004 04:21
12-Sep-2004 04:21
In reply to inge at elektronaut dot no's function:
Notice that this function returns an object, and not
a string. This is quite hard to notice at first, because
if you validate the return against a string, it will return
true:
print findAttribute($Fox, "foo") == "bar"? "Matches.":"Won't match."; // "Matches."
But, if you attempt to use the return for indexing in an array, like:
$MyArray[findattribute($Fox, "foo")] = "bar";
You will get an illegal offset type-error.
------
To correct this, we force-cast the return as a string:
function findAttribute($object, $attribute) {
foreach($object->attributes() as $a => $b) {
if ($a == $attribute) {
$return = $b;
}
}
if($return) {
return (string)$return;
}
}
inge at elektronaut dot no
26-May-2004 08:53
26-May-2004 08:53
here's a simple function to get an attribute by name, based on the example
<?php
function findAttribute($object, $attribute) {
foreach($object->attributes() as $a => $b) {
if ($a == $attribute) {
$return = $b;
}
}
if($return) {
return $return;
}
}
?>