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Fb Utf8ize

hphp/hack/manual/apis/Functions/fb_utf8ize.md

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:::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

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

Parameters

  • inout mixed $input - What string to sanitize.

Returns

  • bool - - Sanitized string.
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