SimpleXMLElement
You can access a node child with his name this way :
<?php
$root = new SimpleXMLElement($filePath);
echo $root->nodeName->attributes;
// It works recursivly so this will work too
echo $root->nodeName->subNodeName->attributes();
?>
But if you want to ADD an attribute to a children you MUST use the children() method to access and modfiy it or it will modify the parent's attributes.
<?php
// Add a subnode
$element->nodeName->addChild('subNodeName', "whatever you want");
// Get the pos in the childrens of the parent node
$lastNodePos = $element->nodeName->count()-1;
// Get the parents node childrens
$nodeChildrens = $element->nodeName->children();
// Add an attribute to the last created
$nodeChildrens[$lastNodePos]->addAttribute('attributeName', "The attribute value);
?>
SimpleXMLElement::addAttribute
(PHP 5 >= 5.1.3)
SimpleXMLElement::addAttribute — Adds an attribute to the SimpleXML element
Description
public void SimpleXMLElement::addAttribute
( string
$name
[, string $value
[, string $namespace
]] )Adds an attribute to the SimpleXML element.
Parameters
-
name -
The name of the attribute to add.
-
value -
The value of the attribute.
-
namespace -
If specified, the namespace to which the attribute belongs.
Return Values
No value is returned.
Examples
Note:
Listed examples may include example.php, which refers to the XML string found in the first example of the basic usage guide.
Example #1 Add attributes and children to a SimpleXML element
<?php
include 'example.php';
$sxe = new SimpleXMLElement($xmlstr);
$sxe->addAttribute('type', 'documentary');
$movie = $sxe->addChild('movie');
$movie->addChild('title', 'PHP2: More Parser Stories');
$movie->addChild('plot', 'This is all about the people who make it work.');
$characters = $movie->addChild('characters');
$character = $characters->addChild('character');
$character->addChild('name', 'Mr. Parser');
$character->addChild('actor', 'John Doe');
$rating = $movie->addChild('rating', '5');
$rating->addAttribute('type', 'stars');
echo $sxe->asXML();
?>
The above example will output something similar to:
<?xml version="1.0" standalone="yes"?>
<movies type="documentary">
<movie>
<title>PHP: Behind the Parser</title>
<characters>
<character>
<name>Ms. Coder</name>
<actor>Onlivia Actora</actor>
</character>
<character>
<name>Mr. Coder</name>
<actor>El ActÓr</actor>
</character>
</characters>
<plot>
So, this language. It's like, a programming language. Or is it a
scripting language? All is revealed in this thrilling horror spoof
of a documentary.
</plot>
<great-lines>
<line>PHP solves all my web problems</line>
</great-lines>
<rating type="thumbs">7</rating>
<rating type="stars">5</rating>
</movie>
<movie>
<title>PHP2: More Parser Stories</title>
<plot>This is all about the people who make it work.</plot>
<characters>
<character>
<name>Mr. Parser</name>
<actor>John Doe</actor>
</character>
</characters>
<rating type="stars">5</rating>
</movie>
</movies>
add a note
User Contributed Notes
SimpleXMLElement::addAttribute - [3 notes]
sarlak ¶
2 years ago
p.servus ¶
1 year ago
If you need an Namespace, you must write a Prefix of the Namespace + the Name of the Attribute ("prefix:name") as the first parameter AND the uri as the third one. (I don't know why?!)
Example code:
<?php
$xml = new SimpleXMLElement("<packagedElement></packagedElement>");
$xml->addAttribute("xmi:type", "uml:Class", "http://schema.omg.org/spec/XMI/2.1");
echo $xml->asXml();
?>
Output:
<packagedElement xmlns:xmi="http://schema.omg.org/spec/XMI/2.1" xmi:type="uml:Class"></packagedElement>
booleer at yahoo dot it ¶
2 years ago
If the attribute already exists, addAttribute does nothing.
example:
<?php
$xml_string = <<<XML
<?xml version="1.0" encoding="UTF-8"?>
<root>
<item id="foo">
<root>
XML;
$xml = simplexml_load_string($xml_string);
$xml->item->addAttribute('id', 'bar');
echo $xml->asXML();
?>
The above examples will output:
<?xml version="1.0" encoding="UTF-8"?>
<root>
<item id="foo">
<root>