parameter.deprecatedEnum

This error is reported by the phpstan-deprecation-rules extension.

Code example

<?php declare(strict_types = 1);

/** @deprecated Use NewStatus instead */
enum OldStatus: string
{
	case Active = 'active';
	case Inactive = 'inactive';
}

function processOrder(OldStatus $status): void
{
}

Why is it reported?

A function or method parameter uses a deprecated enum as its native type declaration. The enum has been marked with a @deprecated PHPDoc tag, indicating it should no longer be used. Using a deprecated enum in a parameter type ties new code to an obsolete API.

How to fix it

Replace the deprecated enum with its recommended replacement in the parameter type declaration:

 <?php declare(strict_types = 1);

-function processOrder(OldStatus $status): void
+function processOrder(NewStatus $status): void
 {
 }