enum.methodRedeclaration

Code example

<?php declare(strict_types = 1);

enum Suit
{
	case Hearts;
	case Diamonds;

	public static function cases(): array
	{
		return [];
	}
}

Why is it reported?

Enums in PHP provide built-in methods that cannot be redeclared. The cases() method is always available on every enum, and backed enums additionally have from() and tryFrom() methods. Attempting to define these methods manually results in a fatal error because they are provided natively by the language.

How to fix it

Remove the redeclared method and use the native implementation:

 enum Suit
 {
 	case Hearts;
 	case Diamonds;
-
-	public static function cases(): array
-	{
-		return [];
-	}
 }

If custom logic is needed, use a method with a different name:

 enum Suit
 {
 	case Hearts;
 	case Diamonds;

-	public static function cases(): array
+	public static function availableCases(): array
 	{
-		return [];
+		return [self::Hearts];
 	}
 }