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Informations about the package enum-like
Implementation like Enum with PHP
Table of Contents
- Why
- Requirements
- Install
- Usage
- Tips
- Examples
Why
I created this library to allow Enum to be used in many situations.
This library has the following advantages:
- Multiple values can be declared per enumerator
- You can declare Enum from various data sources, such as class constant, DB, or configuration file
Requirements
- PHP ^7.4
Install
Usage
is an abstract class needs to be extended to use.
Basic Declaration
The following code uses class constant for the declaring Enum.
Notes
- Use protected visibility when writing the
- Do not declare the methods that has the same name of the enumerator name
Static methods
Static methods that has the same name as the enumerator name are implemented by .
Therefore, if you care about the IDE auto completion, I recommend using the phpdoc as follows:
Instance methods
Type hint
You can use classes that inherit from Enum for type hints.
How to declare the multiple values per enumerator
If you want to declare the multiple values per enumerator, you can assign an array.
How to declare the Enum from various data sources
If you want to declare an Enum based on data that is not a class constant, you can overwrite .
The following two ways of declaration are equivalent.
Tips
If you want to get an instance by Identifier or something
Using an identifier as a way to get an instance is a common pattern. So, as a way to achieve this, I have prepared to get an instance based on the ID.
I think the implementation of the will be helpful when you get an instance based on some identifiers.
