Hphp Crash Log - 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. :::

Adds an entry to a log file that's written when server crashes

Hack

function hphp_crash_log(
  string $name,
  string $value,
): void;

This is useful for diagnose why server crashed. For example, logged-on user's ID.

Parameters

string $name - Name of the value.
string $value - Value to write to log.

Returns

void