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Xbox Process Call Message

hphp/hack/manual/apis/Functions/xbox_process_call_message.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. :::

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.
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