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Open Read Only

hphp/hack/manual/hsl/Functions/HH.Lib.File/open_read_only.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. :::

Hack
namespace HH\Lib\File;

function open_read_only(
  string $path,
): CloseableReadHandle;

Parameters

  • string $path

Returns

  • CloseableReadHandle
<!-- HHAPIDOC -->