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lowercase

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.

Returns the string with all alphabetic characters converted to lowercase

namespace HH\Lib\Str;

function lowercase(
  string $string,
): string;

Guide​

Parameters​

  • string $string

Returns​

  • string