SimpleXMLElement::addAttribute

(PHP 5 >= 5.1.3)

SimpleXMLElement::addAttribute — Adds an attribute to the SimpleXML element

Descrição

public void SimpleXMLElement::addAttribute ( string $name , string $value [, string $namespace ] )

Adds an attribute to the SimpleXML element.

Parâmetros

name: The name of the attribute to add.
value: The value of the attribute.
namespace: If specified, the namespace to which the attribute belongs.

Valor Retornado

Não há valor retornado.

Exemplos

Nota:
Listed examples may include example.php, which refers to the XML string found in the first example of the basic usage guide.

Exemplo #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();



 ?>

O exemplo acima irá imprimir algo similar a:

<?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 Act&#xD3;r</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>

Veja Também

SimpleXMLElement::addChild() - Adds a child element to the XML node
Basic usage

User Contributed Notes

sarlak 07-May-2011 02:49

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);


?>

booleer at yahoo dot it 16-Dec-2010 05:44

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>