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reverse

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.

Reverse a string by bytes

namespace HH\Lib\Str;

function reverse(
  string $string,
): string;

Guide​

Parameters​

  • string $string

Returns​

  • string

Examples​

$result = Str\reverse("example_string");
echo($result);
//result: "gnirts_elpmaxe"

$result = Str\reverse("Example_string");
echo($result);
//result:"gnirts_elpmaxE"

$result = Str\reverse("");
echo($result);
//result: ""