(PHP 5, PHP 7, PHP 8)
DOMNode::isSupported — Checks if feature is supported for specified version
Checks if the asked feature
is supported for the
specified version
.
feature
The 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
。