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Error Identifier: sealed.onEnum

Every error reported by PHPStan has an error identifier. Here’s a list of all error identifiers. In PHPStan Pro you can see the error identifier next to each error and filter errors by their identifiers.

Code example #

<?php declare(strict_types = 1);

/**
 * @phpstan-sealed SomeClass
 */
enum Status
{
	case Active;
	case Inactive;
}

Why is it reported? #

The @phpstan-sealed PHPDoc tag is placed on an enum. This tag restricts which types can extend or implement a given type, but enums in PHP cannot be extended. Enums are implicitly final, so there are no subtypes to restrict. The @phpstan-sealed tag is only valid on classes and interfaces.

How to fix it #

Remove the @phpstan-sealed tag from the enum:

-/**
- * @phpstan-sealed SomeClass
- */
 enum Status
 {
 	case Active;
 	case Inactive;
 }

If sealed type restrictions are needed, use an interface or abstract class instead:

 /**
  * @phpstan-sealed FooHandler|BarHandler
  */
-enum Status
+interface Handler
 {
 }

How to ignore this error #

You can use the identifier sealed.onEnum to ignore this error using a comment:

// @phpstan-ignore sealed.onEnum
codeThatProducesTheError();

You can also use only the identifier key to ignore all errors of the same type in your configuration file in the ignoreErrors parameter:

parameters:
	ignoreErrors:
		-
			identifier: sealed.onEnum

Rules that report this error #

• PHPStan\Rules\PhpDoc\SealedDefinitionClassRule [1]

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