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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'
);

$implementation = new DOMImplementation;

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

?>

Siehe auch

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