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Date: Thu, 23 May 2024 20:20:00 +0200
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Subject: Re: [PHP-DEV] [Discussion] Implicitly backed enums
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From: tim@bastelstu.be (=?UTF-8?Q?Tim_D=C3=BCsterhus?=)

Hi

On 5/22/24 02:48, Aaron Piotrowski wrote:
> Perhaps not as clean and easy as the functionality being built-in, but it gets the job done.

I would suggest to use the built-in functionality then.

enum cases are literally just class constants, thus you can access them 
via the `constant()` function or the dynamic class constant fetch syntax 
for PHP 8.3+ and check their existence with `defined()`:

https://3v4l.org/44goe

     <?php

     enum ExampleEnum
     {
         case ONE;
         case TWO;
         case THREE;
     }

     $caseName = 'ONE';
     var_dump(defined(ExampleEnum::class . "::{$caseName}"));
     var_dump(constant(ExampleEnum::class . "::{$caseName}"));
     var_dump(ExampleEnum::{$caseName});

Outputs:

     bool(true)
     enum(ExampleEnum::ONE)
     enum(ExampleEnum::ONE)

Best regards
Tim Düsterhus