Edit Report a Bug

    DOMImplementation::hasFeature

    (PHP 5, PHP 7, PHP 8)

    DOMImplementation::hasFeature — Test if the DOM implementation implements a specific feature

    Beschreibung

    public DOMImplementation::hasFeature(string $feature, string $version): bool

    Test if the DOM implementation implements a specific feature.

    You can find a list of all features in the » Conformance section of the DOM specification.

    Parameter-Liste

    feature

    The feature to test.

    version

    The version number of the feature to test. In level 2, this can be either 2.0 or 1.0.

    Rückgabewerte

    Gibt bei Erfolg true zurück. Bei einem Fehler wird false zurückgegeben.

    Changelog

    Version Beschreibung
    8.0.0 Calling this function statically will now throw an Error. Previously, an E_DEPRECATED was raised.

    Beispiele

    Beispiel #1 Testing your DOM Implementation

    <?php

    $features     = array(
    'Core' => 'Core module',
    'XML' => 'XML module',
    'HTML' => 'HTML module',
    'Views' => 'Views module',
    'Stylesheets' => 'Style Sheets module',
    'CSS' => 'CSS module',
    'CSS2' => 'CSS2 module',
    'Events' => 'Events module',
    'UIEvents' => 'User interface Events module',
    'MouseEvents' => 'Mouse Events module',
    'MutationEvents' => 'Mutation Events module',
    'HTMLEvents' => 'HTML Events module',
    'Range' => 'Range module',
    'Traversal' => 'Traversal module'
    );

    foreach (    $features as $key => $name) {
    if (    DOMImplementation::hasFeature($key, '2.0')) {
    echo     "Has feature $name\n";
    } else {
    echo     "Missing feature $name\n";
    }
    }

    ?>

    Siehe auch

    add a note add a note

    User Contributed Notes

    There are no user contributed notes for this page.
    To Top