PHP 8.1 RFC: Enumerations

RFC Title	Enumerations
Change Type	New Feature
Target Version	PHP 8.1
Created on	2020-12-04
Last Updated on	2021-05-03
RFC Status	Implemented
Documentation	Enums

RFC Vote: Enumerations

2021-02-032021-02-17

Implemented

Vote Period	2021-02-03 - 2021-02-17
Passing Threshold	>= 2/3
Vote Results	Yes: 44No: 7

An RFC to add Enumerations (Enums for short) to PHP.

Enums are enumerated types that has a fixed number of possible values. This RFC proposes to add an enum_exists function, two new interfaces for int/string-backed enums, and unit enums.

Subscribe to PHP.Watch newsletter for monthly updates

You will receive an email on last Wednesday of every month and on major PHP releases with new articles related to PHP, upcoming changes, new features and what's changing in the language. No marketing emails, no selling of your contacts, no click-tracking, and one-click instant unsubscribe from any email you receive.

Support PHP.Watch — If you find the articles, version information, Codex, and other PHP.Watch contributions useful, consider supporting through GitHub Sponsors. Your sponsorship helps dedicate more time to creating valuable content and improving the PHP community. Together, we can keep the momentum going — thank you for your support!

Thanks to the highest tier sponsor: @TomasVotruba for your generous support to keep PHP.Watch moving 💜