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    SimpleXMLElement::key

    (No version information available, might only be in Git)

    SimpleXMLElement::key — Return current key

    Descripción

    public SimpleXMLElement::key(): string
    Advertencia

    Prior to PHP 8.0, SimpleXMLElement::key() was only declared on the subclass SimpleXMLIterator.

    This method gets the XML tag name of the current element.

    Parámetros

    Esta función no tiene parámetros.

    Valores devueltos

    Returns the XML tag name of the element referenced by the current SimpleXMLElement object.

    Errores/Excepciones

    Throws an Error on failure.

    Historial de cambios

    Versión Descripción
    8.1.0 An Error is now thrown if SimpleXMLElement::key() is called on an invalid iterator. Previously, false was returned.

    Ejemplos

    Ejemplo #1 Get the current XML tag key

    <?php
    $xmlElement     = new SimpleXMLElement('<books><book>PHP basics</book><book>XML basics</book></books>');

    echo     var_dump($xmlElement->key());
    $xmlElement->rewind(); // rewind to the first element
    echo var_dump($xmlElement->key());

    ?>

    El resultado del ejemplo sería:

    bool(false)
string(4) "book"

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