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Example code of yceruto/option-type

Informations about the package option-type

PHP Option type

Latest Stable Version Unstable License PHP Version Require

The Option type represents a value that might or might not be there. It's all about null safety in PHP!

[!NOTE] Inspired by Rust's Option type and other languages like Scala, Swift, F#, etc.

Installation

Handling the presence or absence of a value with null

In PHP, denoting the absence of a value is done with null, e.g. when a divide function returns null if the divisor is 0.

Can you spot the issue in this code? Apparently, everything is fine until you try to divide by zero. The function will return null, and the success() function will throw a TypeError because it expects an int value, not null.

The issue with this approach is that it's too easy to overlook checking if the value is null, leading to runtime errors, and this is where the Option type comes in handy: it always forces you to deal with the null case.

Handling the presence or absence of a value with Option

Options often work with pattern matching to check if there’s a value and act accordingly, always making sure to handle the null case.

[!TIP] You can use the functions some() and none() as quick ways to create an Option instance. some() is just like new Some(), meaning it includes a value, while none() is the same as new None(), indicating it is missing a value.

Documentation

License

This software is published under the MIT License

All versions of option-type with dependencies

PHP Build Version
Package Version
Requires php Version >=8.2
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