Is Callable With Name

:::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. :::

function is_callable_with_name(
  mixed $callback,
  bool $syntax_only,
  inout mixed $callable_name,
): bool;

Parameters

• mixed $callback
• bool $syntax_only
• inout mixed $callable_name

Returns

• bool