GetAttributeClass - Hhvm

:::info[Note] This is a point-in-time snapshot of the API documentation from January 2026. Going forward, we will not be maintaining a public copy of these references, and recommend users to refer to the built-in signature helpers available in the Hack LSP instead for complete and up-to-date information. :::

Hack

final public function getAttributeClass<T as HH\ParameterAttribute>(
  classname<T> $c,
): ?T;

Parameters

classname<T> $c

Returns

?T