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cas

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.

Compare and set

public function cas(
  int $cas,
  string $key,
  string $value,
  int $expiration = 0,
): Awaitable<void>;

Parameters​

  • int $cas - CAS token as returned by getRecord()
  • string $key - Name of the key to store
  • string $value - Datum to store
  • int $expiration = 0

Returns​