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Example code of aphonix/option

Informations about the package option

🦀 Rust-style Option for PHP 🐘

A lightweight, zero-dependency implementation of Rust's Option for PHP 7.1+. This library brings functional programming patterns to PHP, helping you handle optional values explicitly and write more expressive code.

✨ Features

🚀 Installation

You can install the package via Composer:

📖 Quick Start

Basic Usage

Some(null) is allowed and represents a present value whose payload is null. Use None() when the value is absent.

Functional Chaining

Avoid defensive is_null() nesting with monad-style chaining:

Advanced: and_then (FlatMap)

Use and_then when your transformation closure returns an Option itself:

🛠 API Reference

Check Methods

Method Description
is_some(): bool Returns true if the option is a Some value.
is_none(): bool Returns true if the option is a None value.
is_some_and(callable $f): bool Returns true if the option is Some and the value inside matches the predicate.

Unwrapping Methods

Method Description
unwrap() Returns the inner value. Throws an Exception (Panic) if the value is None.
expect(string $msg) Returns the inner value. Throws an Exception with a custom message if the value is None.
unwrap_or($default) Returns the inner value if it exists, otherwise returns the provided default.
unwrap_or_else(callable $f) Returns the inner value if it exists, otherwise returns the result of the closure.

Transformation & Filtering

Method Description
map(callable $f): Option Maps an Option to Option by applying a function to the contained value.
map_or($default, callable $f) Returns the provided default result, or applies a function to the contained value.
filter(callable $f): Option Returns None if the option is Some and the closure returns false.
and_then(callable $f): Option Returns None if the option is None, otherwise calls the closure with the value and returns the result.

Logical Operations

Method Description
and(Option $optB): Option Returns None if the option is None, otherwise returns $optB.
or(Option $optB): Option Returns the option if it contains a value, otherwise returns $optB.
xor(Option $optB): Option Returns Some if exactly one of self, $optB is Some, otherwise returns None.

🧪 Testing

This project uses PHPUnit to verify the core behavior:

📄 License

The MIT License (MIT). Please see the License File for more information.

All versions of option with dependencies

PHP Build Version
Package Version
Requires php Version >=7.1
Composer command for our command line client (download client) This client runs in each environment. You don't need a specific PHP version etc. The first 20 API calls are free. Standard composer command

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