Fb Serialize

:::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. :::

Serialize data into a compact format that can be unserialized by fb_unserialize()

function fb_serialize(
  mixed $thing,
  int $options = 0,
): mixed;

Parameters

• mixed $thing - What to serialize. Note that objects are not supported.
• int $options = 0

Returns

• mixed - - Serialized data.