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SimpleXMLElement::addChild

(PHP 5 >= 5.1.3)

SimpleXMLElement::addChild Adds a child element to the XML node

Descrição

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

Adds a child element to the node and returns a SimpleXMLElement of the child.

Parâmetros

name

The name of the child element to add.

value

If specified, the value of the child element.

namespace

If specified, the namespace to which the child element belongs.

Valor Retornado

The addChild method returns a SimpleXMLElement object representing the child added to the XML node.

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 à:

<?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

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User Contributed Notes 8 notes

up
9
frosty dot z at freesbee dot fr
1 year ago
To complete Volker Grabsch's comment, stating :
"Note that although addChild() escapes "<" and ">", it does not escape the ampersand "&"."

To work around that problem, you can use direct property assignment such as :

<?php
$xmlelement
->value = 'my value < > &';
// results in <value>my value &lt; &gt; &amp;</value>
?>

instead of doing :

<?php
$xmlelement
->addChild('value', 'my value < > &');
// results in <value>my value &lt; &gt; &</value> (invalid XML)
?>

See also: http://stackoverflow.com/questions/552957 (Rationale behind SimpleXMLElement's handling of text values in addChild and addAttribute)

HTH
up
5
alex dot feraud at gmail dot com
3 years ago
Here is a class with more functions for SimpleXMLElement :

<?php
/**
*
* Extension for SimpleXMLElement
* @author Alexandre FERAUD
*
*/
class ExSimpleXMLElement extends SimpleXMLElement
{
   
/**
     * Add CDATA text in a node
     * @param string $cdata_text The CDATA value  to add
     */
 
private function addCData($cdata_text)
  {
  
$node= dom_import_simplexml($this);
  
$no = $node->ownerDocument;
  
$node->appendChild($no->createCDATASection($cdata_text));
  }

 
/**
   * Create a child with CDATA value
   * @param string $name The name of the child element to add.
   * @param string $cdata_text The CDATA value of the child element.
   */
   
public function addChildCData($name,$cdata_text)
    {
       
$child = $this->addChild($name);
       
$child->addCData($cdata_text);
    }

   
/**
     * Add SimpleXMLElement code into a SimpleXMLElement
     * @param SimpleXMLElement $append
     */
   
public function appendXML($append)
    {
        if (
$append) {
            if (
strlen(trim((string) $append))==0) {
               
$xml = $this->addChild($append->getName());
                foreach(
$append->children() as $child) {
                   
$xml->appendXML($child);
                }
            } else {
               
$xml = $this->addChild($append->getName(), (string) $append);
            }
            foreach(
$append->attributes() as $n => $v) {
               
$xml->addAttribute($n, $v);
            }
        }
    }
}
?>
up
2
jerikojerk
3 years ago
If you're looking for a way to append children you may be interested in this:

<?php
$x
= new SimpleXMLElement('<root name="toplevel"></root>');
$f1 = new SimpleXMLElement('<child pos="1">alpha</child>');
$f2 = new SimpleXMLElement('<child pos="2">beta</child>');
$f3 = new SimpleXMLElement('<child pos="3">gamma</child>');

$x->{$f1->getName()} = $f1;
$x->{$f2->getName()}[] = $f2;
$x->{$f3->getName()}[] = $f3;

echo
'count child=',$x->count(),"\n";
echo
$x->asXML();

foreach (
$x->children() as $foo )
{
   
var_dump($foo);
}

?>
up
1
ivan dot kakurov at gmail dot com
1 year ago
Here's my solution for creating XML from Multidimensional Array.
<?php
//DATA
       
$xmlDAta = array(
            array(
               
"name"  => "nameVal",
               
"value" => "valVal",
               
"css"   => "cssVal"
           
),
            array(
               
"name"  => "name1Val",
               
"value" => "val1Val",
               
"css"   => "css1Val"
           
),
           
"tname" => array(
                array(
                   
"iTname"   => "iTname",
                   
"iTname2"  => "iTname1",
                   
"iTname2"  => "iTname2",
                   
"iTbname3" => array(
                       
"iiTbname"  => "tbName",
                       
"iiTbname1" => "tbName1",
                    ),
                ),
            ),
           
"tdata" => "otheerDAta"
       
);

  
/**
     * Create XML using string or array
     *
     * @param mixed $data input data
     * @param SimpleXMLElement $xml
     * @param string $child name of first level child
     *
     * @return adding Xml formated data into SimpleXmlElement
     */

function data2XML(array $data, SimpleXMLElement $xml, $child = "items")
    {

        foreach(
$data as $key => $val) {
            if(
is_array($val)) {

                if(
is_numeric($key)) {
                   
$node  = $xml->addChild($child);
                   
$nodes = $node->getName($child);
                } else {

                   
$node  = $xml->addChild($key);
                   
$nodes = $node->getName($key);
                }

               
$node->addChild($nodes, self::data2Xml($val, $node));
            } else {
               
$xml->addChild($key, $val);
            }
        }

    }

//Use

       
$xml    = new SimpleXMLElement("<root/>");
       
Util::data2XML($xmlDAta, $xml, "Items");

?>
up
0
passerbyxp at gmail dot com
1 year ago
Be aware that simply because you can <?php $dom->addChild();?> doesn't mean your XML is valid under simple XML itself:

<?php
$dom
=simplexml_load_string("<test></test>");
$dom->addChild("3D","1,2,3");
$xml=$dom->asXML();
echo
$xml;
/* echos:
<?xml version="1.0"?>
<test><3D>1,2,3</3D></test>
*/

$dom=simplexml_load_string($xml);
/*
generates a whole lots of warnings,
and refuses to create an object.
*/
?>

Same in PHP 5.3 and 5.4
up
0
Volker Grabsch
3 years ago
Note that although addChild() escapes "<" and ">", it does not escape the ampersand "&".

So addChild() is unsuited to handle user-defined input!

Instead, you will have to replace all "&" with "&amp;" before calling addChild().

Or, use htmlspecialchars() which also replaces other characters, but won't do any harm as addChild() won't replace those again.
up
0
felipenmoura at gmail dot com
3 years ago
This method returns a reference to the specific SimpleXMLElement.
If you use:
<?php
    $xml
= new SimpleXMLElement('<root></root>');
   
$xml->father['name']= 'Fathers name'; // creates automatically a father tag with attribute name
   
$son= $xml->father->addChild('son'); // uses the first father tag
   
$son['name']= 'first son';
   
$otherSon= $xml->father->addChild('son'); // uses the first father tag but now, in a second son tag
   
$otherSon['name']= 'second son';
   
    echo
htmlentities($xml->asXML());
?>

The result will be
<root>
    <father>
        <son name='first son' />
        <son name='second son' />
    </father>
</root>

So, once you change something to the just added child, you are actually accessing the element inside the SimpleXMLElement as a reference.
up
-1
thallisphp at gmail dot com
3 months ago
<?php
class MySimpleXMLElement extends SimpleXMLElement
{
   
/**
     * Add SimpleXMLElement code into a SimpleXMLElement
     *
     * @param SimpleXMLElement $append
     */
   
public function appendXML($append)
    {
        if (
$append) {
            if (
strlen(trim((string)$append)) == 0) {
               
$xml = $this->addChild($append->getName());
            } else {
               
$xml = $this->addChild($append->getName(), (string)$append);
            }

            foreach (
$append->children() as $child) {
               
$xml->appendXML($child);
            }

            foreach (
$append->attributes() as $n => $v) {
               
$xml->addAttribute($n, $v);
            }
        }
    }
}
?>
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