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Fun Get Function

hphp/hack/manual/apis/Functions/HH/fun_get_function.md

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:::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

Hack
namespace HH;

function fun_get_function(
  mixed $fun,
): string;

Parameters

  • mixed $fun

Returns

  • function - name
<!-- HHAPIDOC -->