(PHP 5 >= 5.3.0, PHP 7, PHP 8)
SimpleXMLElement::__toString — Retourne le contenu sous forme de chaine
Retourne le contenu texte stocké directement dans l'élément. Ne retourne pas le contenu texte stocké dans les éléments enfants.
Cette fonction ne contient aucun paramètre.
Retourne le contenu sous forme de chaîne de caractères, ou retourne une chaine vide en cas d'erreur.
Exemple #1 Récupérer le contenu chaine
<?php
$xml = new SimpleXMLElement('<a>1 <b>2 </b>3</a>');
echo $xml;
?>L'exemple ci-dessus va afficher :
1 3
__toString() is not intended to be called directly.
Instead, it defines what is returned when the object is cast to string, either explicitly with:
(string)$element
Or implicitly, when used in certain contexts which would cause a conversion to string.[Someone remove that other Patanjali's note, because it has errors! :-(]
For those for whom it may not be immediately obvious from the example, the echo is what is forcing __toString() to be used.
However, to assign the text of a node (but not its children) to a variable:
$XML = new SimpleXMLElement('<p>Hello<span> world</span>.<span> Good day!</span></p>');
$Text = $XML->__toString();
is effectively:
$Text = 'Hello.'; // The <span>s are ignored.
Either of:
$Text = $XML->span->__toString();
$Text = $XML->span[0]->__toString();
is effectively:
$Text = ' world'; // Only the first <span> is used.
$Text = $XML->span[1]->__toString();
is effectively:
$Text = ' Good day!'; // Only the second <span> is used.