Xbox Process Call Message - 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. :::

This function is invoked by the xbox facility to start an xbox call task

Hack

function xbox_process_call_message(
  string $msg,
): mixed;

This function is not intended to be called directly by user code.

Parameters

string $msg - The call message.

Returns

mixed - - The return value of the xbox call task.