SimpleXMLElement::asXML

    (PHP 5, PHP 7, PHP 8)

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

    Descrizione

    public SimpleXMLElement::asXML(?string $filename = null): string|bool

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

    Elenco dei parametri

    filename

    If a string value is provided, 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.

    Log delle modifiche

    Versione Descrizione
    8.0.0 filename is nullable now.

    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');

    foreach (    $result as $node) {
    echo     $node->asXML();
    }
    ?>

    Il precedente esempio visualizzerà:

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

    Vedere anche:

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    User Contributed Notes 2 notes

    up
    33
    andreas dot theissen at t-online dot de
    12 years 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.
    up
    10
    oleg dot pavlin at gmail dot com
    12 years 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');
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