Hphp Debug Session Auth

:::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. :::

Request signed session from the client

function hphp_debug_session_auth(): string;

The serialized session is empty in case of error;

Returns

• string