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SetDeclaredEncoding

hphp/hack/manual/apis/Classes/EncodingDetector/setDeclaredEncoding.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. :::

If the user provided an encoding in metadata (like an HTTP or XML declaration), this can be used as an additional hint to the detector

Hack
public function setDeclaredEncoding(
  string $encoding,
): void;

Parameters

  • string $encoding - Possible encoding for the byte array obtained from associated metadata

Returns

  • void
<!-- HHAPIDOC -->