trait.duplicateEnumCase

Code example

<?php declare(strict_types = 1);

trait MyTrait
{
	case Active;
	case Active;
}

class Foo
{
	use MyTrait;
}

Why is it reported?

An enum case with the same name is declared more than once in a trait body. This is reported by a generic duplicate-declaration rule that checks all class-like structures uniformly. While enum cases inside a trait are not valid PHP, PHPStan still detects the duplicate declaration when the trait is used by a class.

How to fix it

Remove the duplicate enum case or rename it:

 trait MyTrait
 {
 	case Active;
-	case Active;
+	case Inactive;
 }