(PHP 5, PHP 7)
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.
成功时返回 TRUE， 或者在失败时返回 FALSE。