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SimpleXMLElement::count> <SimpleXMLElement::children
Last updated: Fri, 12 Mar 2010

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SimpleXMLElement::__construct

(PHP 5 >= 5.0.1)

SimpleXMLElement::__construct Crée un nouvel objet SimpleXMLElement

Description

__construct ( string $data [, int $options [, bool $data_is_url [, string $ns [, bool $is_prefix ]]]] )

Crée un nouvel objet SimpleXMLElement.

Liste de paramètres

data

Une chaîne de caractères XML bien formée ou le chemin d'accès ou un URL pointant à un document XML si data_is_url vaut TRUE.

options

Optionnellement utilisé pour spécifier des paramètres Libxml additionnels.

data_is_url

Par défaut, data_is_url vaut FALSE. Utilisez TRUE pour spécifier que le paramètres data est un chemin d'accès ou un URL pointant à un document XML au lieu d'une chaîne de caractères de données.

ns

is_prefix

Valeurs de retour

Retourne un objet SimpleXMLElement représentant les données data .

Erreurs / Exceptions

Produit un message d'erreur de type E_WARNING pour chaque erreur trouvée dans les données XML et lance une exception si des erreurs sont détectées.

Astuce

Utilisez la fonction libxml_use_internal_errors() pour supprimer toutes les erreurs XML et la fonction libxml_get_errors() pour les parcourir.

Exemples

Exemple #1 Crée un objet SimpleXMLElement

<?php

include 'example.php';

$sxe = new SimpleXMLElement($xmlstr);
echo 
$sxe->movie[0]->title;

?>

Exemple #2 Crée un objet SimpleXMLElement à partir d'un URL

<?php

$sxe 
= new SimpleXMLElement('http://example.org/document.xml'NULLTRUE);
echo 
$sxe->asXML();

?>

Voir aussi



SimpleXMLElement::count> <SimpleXMLElement::children
Last updated: Fri, 12 Mar 2010
 
add a note add a note User Contributed Notes
SimpleXMLElement::__construct
zwilson at gulosolutions dot com
19-Nov-2009 06:16
SimpleXML does not correctly parse SOAP XML results if the result comes back with colons ‘:’ in a tag, like <soap:Envelope>. Why? Because SimpleXML treats the colon character ‘:’ as an XML namespace, and places the entire contents of the SOAP XML result inside a namespace within the SimpleXML object. There is no real way to correct this using SimpleXML, but we can alter the raw XML result a little before we send it to SimpleXML to parse.

All we have to do is use the preg_replace function to get rid of the colons in the SOAP response tags BEFORE you hand it off to SimpleXML, like so:

<?php
// SimpleXML seems to have problems with the colon ":" in the <xxx:yyy> response tags, so take them out
$xmlString = preg_replace("/(<\/?)(\w+):([^>]*>)/", "$1$2$3", $response);
?>
uramihsayibok, gmail, com
17-Aug-2009 01:52
As I was filling out a bug report, I realized why (speculation here) the constructor is final: so that functions like simplexml_load_file and simplexml_load_string can work. I imagine the PHP-ized code looks something like

<?php

function simplexml_load_file($filename, $class_name = "SimpleXMLElement", $options = 0, $ns = "", $is_prefix = false) {
    return new
$class_name($filename, $options, true, $ns, $is_prefix);
}

?>

If we were to use a different $class_name and change the constructor's definition these functions wouldn't work.

There's no easy, sensible solution that keeps simplexml_load_file and simplexml_load_string.
alvaro at demogracia dot com
30-Sep-2008 08:42
A note about the undocumented parameters:

$ns (string): namespace prefix or URI
$is_prefix (bool): TRUE if $ns is a prefix, FALSE if it's a URI; defaults to FALSE

E.g.:

<?php
$xml_string
= '<xml xmlns:foo='uuid:BDC6E3F0-6DA3-11d1-A2A3-00AA00C14882'>
<foo:bar>..................'
;

$a = new SimpleXMLElement($xml_string, NULL, FALSE, 'foo', TRUE);
$b = new SimpleXMLElement($xml_string, NULL, FALSE, 'uuid:BDC6E3F0-6DA3-11d1-A2A3-00AA00C14882', FALSE);
?>

However, I don't know exactly what these parameters are used for. They don't seem to be of much help when dealing with namespaces :-?
tudor at culise dot net
20-Nov-2007 11:35
This class is extendable, but it's too bad that its constructor cannot be overriden (PHP says it's a final method). Thus the class should be wrapped using the delegation principle rather that extended.

SimpleXMLElement::count> <SimpleXMLElement::children
Last updated: Fri, 12 Mar 2010
 
 
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