PHP Option Object

A PHP implementation of Rust's Option type with roughly the same API.

Version information

Version 3.x.x requires PHP 7.3+. Make sure you match the versions for this and the Result library if you use both.

Installation

composer require prewk/option

Usage

use Prewk\Option;
use Prewk\Option\{Some, None};

function findSomething(): Option {
    // ...
    if ($foundSomething) {
        return new Some($thing);
    } else {
        return new None;
    }
}

function findSomethingElse(): Result {
    // ...
    if ($foundSomething) {
        return new Some($thing);
    } else {
        return new None;
    }
}

// Fallback to value
$value = findSomething()->unwrapOr(null);

// Fallback to option and throw an exception if both fail
$value = findSomething()->or(findSomethingElse())->unwrap();

// Throw custom exception on missing thing (None)
$value = findSomething()->expect(new Exception("Oh noes!"));

License

MIT & Apache 2.0