Error Identifier: enum.duplicate

← Back to enum.*

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 #

This error is reported when the same enum name is declared in multiple files within the analysed codebase:

// file1.php
<?php declare(strict_types = 1);

namespace App;

enum Status
{
    case Active;
    case Inactive;
}

// file2.php
<?php declare(strict_types = 1);

namespace App;

enum Status
{
    case Pending;
    case Completed;
}

Why is it reported? #

The same enum name is declared multiple times within the registered stub files.

How to fix it #

Remove the duplicate enum declaration, keeping only one:

 <?php declare(strict_types = 1);
 
 // file2.php
 namespace App;

-enum Status
-{
-    case Pending;
-    case Completed;
-}

If both declarations are intentionally different, rename one of them:

 <?php declare(strict_types = 1);
 
 // file2.php
 namespace App;

-enum Status
+enum TaskStatus
 {
     case Pending;
     case Completed;
 }

How to ignore this error #

You can use the identifier enum.duplicate to ignore this error using a comment:

// @phpstan-ignore enum.duplicate
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: enum.duplicate

Rules that report this error #

• PHPStan\Rules\Classes\DuplicateClassDeclarationRule [1]