DOMNode::isSupported

(PHP 5, PHP 7, PHP 8)

DOMNode::isSupported — Checks if feature is supported for specified version

public DOMNode::isSupported(string $feature, string $version): bool

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。

DOMImplementation::hasFeature() - Test if the DOM implementation implements a specific feature