[edit] Last updated: Fri, 17 May 2013

SimpleXMLElement::asXML

(PHP 5 >= 5.0.1)

SimpleXMLElement::asXML — Return a well-formed XML string based on SimpleXML element

Descrizione

public mixed SimpleXMLElement::asXML ([ string $filename ] )

The asXML method formats the parent object's data in XML version 1.0.

Elenco dei parametri

filename: If specified, the function writes the data to the file rather than returning it.

Valori restituiti

If the filename isn't specified, this function returns a string on success and FALSE on error. If the parameter is specified, it returns TRUE if the file was written successfully and FALSE otherwise.

Esempi

Example #1 Get XML


<?php
$string = <<<XML
<a>
 <b>
  <c>text</c>
  <c>stuff</c>
 </b>
 <d>
  <c>code</c>
 </d>
</a>
XML;

$xml = new SimpleXMLElement($string);

echo $xml->asXML();

?>

Il precedente esempio visualizzerà:

<?xml version="1.0"?>
<a>
 <b>
  <c>text</c>
  <c>stuff</c>
 </b>
 <d>
  <c>code</c>
 </d>
</a>

asXML also works on Xpath results:

Example #2 Using asXML() on SimpleXMLElement::xpath() results


<?php
// Continued from example XML above.

/* Search for <a><b><c> */
$result = $xml->xpath('/a/b/c');

while(list( , $node) = each($result)) {
    echo $node->asXML();
}
?>

Il precedente esempio visualizzerà:

<c>text</c><c>stuff</c>

Vedere anche:

Basic SimpleXML usage

SimpleXMLElement::attributes

SimpleXMLElement::addChild

[edit] Last updated: Fri, 17 May 2013

add a note User Contributed Notes SimpleXMLElement::asXML - [3 notes]

down

andreas dot theissen at t-online dot de ¶

7 months ago


To prevent asXML from encoding vowels unwantedly, simply use an approriate XML header with encoding in advance.



If you do so, asXML will happily leave your vowels (and the header) entirely untouched.



<?php



$xmlstr =

'<?xml version="1.0" encoding="UTF-8"?>

<keys>

  <key lang="en">&lt;Insert&gt;</key>

  <key lang="de">&lt;Einfügen&gt;</key>

</keys>';



$sxe = new SimpleXMLElement($xmlstr);



$output = $sxe->asXML();



?>



$xmlstr and $output are identical now.



The subsequent use of html_entity_decode() (as proposed in the very beginning in another post) has several drawbacks:



1. It is slow

2. It is expensive

3. If there are already encoded arrow brackets or double quotes in your source for instance (as shown in the above example), markup will be broken.

down

oleg dot pavlin at gmail dot com ¶

1 year ago


Function asXML decodes special chars like ø, æ and others to &#xE6;, &#xF8;



To get normal output use without quoting:



$xml = html_entity_decode($xml, ENT_NOQUOTES, 'UTF-8');

down

-1

jcr at di dot uminho dot pt ¶

2 years ago


Code snippet to load a XML document, increment an attribute and store it again.


My XML looks like:


<?xml version="1.0" encoding="ISO-8859-1"?>


<doctypes counter="16">


    <doctype id="d1">


        <name>Carta</name>


        <acro>CA</acro>


    </doctype>


...


</doctypes>





I want to retrieve the counter attribute, increment it, and store the new document at the end:





<?php


  $document = simplexml_load_file("mydoc.xml");


  $cont = (integer) $document['counter'];


  $document['counter'] = $cont+1;


  $document->asXML("mydoc.xml");


?>

add a note