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Example code of mle86/enum

Informations about the package enum

php-enum

Build Status Coverage Status Latest Stable Version PHP 7.1 License

This PHP library provides enum functionality for PHP 7.1+ with an Enum interface, an AbstractEnum base class, and an AbstractAutoEnum base class.

It is released under the MIT License.

Installation and Dependencies:

Via Composer: $ composer require mle86/enum

Or insert this into your project's composer.json file:

Its only dependency is the mle86/value library.

Minimum PHP Version:

PHP 7.1

Usage:

To implement a custom Enum class, simply extend the AbstractAutoEnum base class and add a few public constants:

For more fine control over which values are considered valid by your class, override the isValid() class method or extend the more general AbstractEnum base class instead.
Keep in mind though that enum classes are fundamentally based on a hardcoded list of accepted values known at compile-time; if you want to accept values based on a pattern or on complex validation logic, consider using a value object class such as Value instead.

There's three ways to use enum classes:

  1. Just use the class constants.
    You don't really need this library to do that as you can simply write a standalone class for that, but it's definitely a possibility.

  2. Build instances and use typehints in your methods.
    The AbstractAutoEnum base classes have a default constructor and wraps a single valid enum value in the instance. The wrapped value can then be retrieved with the value() getter but it's also returned by the default __toString() and jsonSerialize() methods.

  3. Use the validate() and validateOptional() methods to enfore correct types in your methods.
    If you don't want to build instances of your enum classes to avoid the object overhead or simply because you receive non-object input values (e.g. from a JSON API), you can also check raw input values with the two validate methods. They will accept both raw values and instances, return void, and throw an EnumValueException if the input is invalid. The validateOptional() method also accepts NULL values.

An example with instances and enum typehints:

Another example without typehints and more explicit validation:

Classes and Interfaces:

More Documentation:

All versions of enum with dependencies

PHP Build Version
Package Version
Requires php Version >=7.1
mle86/value Version ^2.1 || ^1.2
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