requireImplements.trait

Code example

<?php declare(strict_types = 1);

trait SomeTrait
{
}

/**
 * @phpstan-require-implements SomeTrait
 */
trait MyTrait
{
}

Why is it reported?

The @phpstan-require-implements PHPDoc tag contains a type that is a trait instead of an interface. This tag is used on traits to enforce that any class using the trait must implement a specific interface. Since traits cannot be implemented (only used), referencing a trait in @phpstan-require-implements is invalid.

How to fix it

Replace the trait reference with an interface:

-/**
- * @phpstan-require-implements SomeTrait
- */
+/**
+ * @phpstan-require-implements SomeInterface
+ */
 trait MyTrait
 {
 }

If the goal is to ensure that classes using this trait also use another trait, there is no PHPDoc tag for that. Consider documenting the requirement in a comment or restructuring the code to use an interface instead.