Checks if the asked feature is supported for the specified version

public function isSupported(
  string $feature,
  string $version,
): bool;


  • string $feature - The feature to test. See the example of DOMImplementation::hasFeature() for a list of features.
  • string $version - The version number of the feature to test.

Return Values

  • bool - - Returns TRUE on success or FALSE on failure.