Fun Get Function

:::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. :::

Get function name from fun

namespace HH;

function fun_get_function(
  mixed $fun,
): string;

Parameters

• mixed $fun

Returns

• function - name