Lz4 Uncompress - Hhvm

:::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. :::

This function uncompresses the given string given that it is in the lz4lib data format, which is primarily used for compressing and uncompressing memcache values

Hack

function lz4_uncompress(
  string $compressed,
): mixed;

Parameters

string $compressed - The data compressed by lz4compress().

Returns

string - - The uncompressed data or FALSE on error