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(PHP 5 >= 5.1.3)
SimpleXMLElement::addChild — Adds a child element to the XML node
$name
[, string $value
[, string $namespace
]] )Adds a child element to the node and returns a SimpleXMLElement of the child.
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.
The addChild method returns a SimpleXMLElement object representing the child added to the XML node.
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 ();
?>
以上例程的输出类似于:
<?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>
[#1] johninen at gmail dot com [2015-09-14 13:27:35]
In the docs for google sitemaps it is required an element for mobile sitemaps that looks like this: <mobile:mobile/>
I used some time to figure out how to make it, but it is quite simple when understood.
$mobile_schema = 'http://www.google.com/schemas/sitemap-mobile/1.0';
//Create root element
$xml_mobile = new SimpleXMLElement('
<?phpxml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:mobile="'.$mobile_schema.'"></urlset>
');
//Add required children
$url_mobile = $xml_b_list_mobile->addChild('url');
$url_mobile->addChild('loc', 'your-mobile-site-url');
$url_mobile->addChild('mobile:mobile', null, $mobile_schema);
For this to work properly the attribute xmlns:mobile must be set in the root node, and then used as namespace(third argument) when creating the mobile:mobile child with null as value.
[#2] thallisphp at gmail dot com [2014-05-07 19:35:29]
<?php
class MySimpleXMLElement extends SimpleXMLElement
{
public function appendXML($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);
}
}
}
}
?>
[#3] frosty dot z at freesbee dot fr [2013-05-16 14:31:20]
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 < > &</value>
?>
instead of doing :
<?php
$xmlelement->addChild('value', 'my value < > &');
// results in <value>my value < > &</value> (invalid XML)
?>
See also: http://stackoverflow.com/questions/552957 (Rationale behind SimpleXMLElement's handling of text values in addChild and addAttribute)
HTH
[#4] passerbyxp at gmail dot com [2013-03-27 03:59:47]
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;
$dom=simplexml_load_string($xml);
?>
Same in PHP 5.3 and 5.4
[#5] ivan dot kakurov at gmail dot com [2013-01-13 04:09:13]
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"
);
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");
?>
[#6] jerikojerk [2011-07-31 07:32:29]
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);
}
?>
[#7] alex dot feraud at gmail dot com [2011-06-16 02:52:34]
Here is a class with more functions for SimpleXMLElement :
<?php
class ExSimpleXMLElement extends SimpleXMLElement
{
private function addCData($cdata_text)
{
$node= dom_import_simplexml($this);
$no = $node->ownerDocument;
$node->appendChild($no->createCDATASection($cdata_text));
}
public function addChildCData($name,$cdata_text)
{
$child = $this->addChild($name);
$child->addCData($cdata_text);
}
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);
}
}
}
}
?>
[#8] Volker Grabsch [2011-04-21 06:17:22]
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 "&" before calling addChild().
Or, use htmlspecialchars() which also replaces other characters, but won't do any harm as addChild() won't replace those again.
[#9] felipenmoura at gmail dot com [2011-04-11 18:06:18]
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.