(PHP 5, PHP 7, PHP 8)
DOMNode::isSupported — Checks if feature is supported for specified version
$feature, string $version): bool
Checks if the asked feature is supported for the
specified version.
featureThe feature to test. See the example of DOMImplementation::hasFeature() for a list of features.
version
The version number of the feature to test.
成功時(shí)返回 true， 或者在失敗時(shí)返回 false。