Fb Utf8ize

:::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. :::

Sanitize a string to make sure it's legal UTF-8 by stripping off any characters that are not properly encoded

function fb_utf8ize(
  inout mixed $input,
): bool;

Parameters

• inout mixed $input - What string to sanitize.

Returns

• bool - - Sanitized string.