requireExtends.deprecatedInterface

Code example

<?php declare(strict_types = 1);

/** @deprecated Use NewInterface instead */
interface OldInterface
{
}

/**
 * @phpstan-require-extends OldInterface
 */
trait MyTrait
{
}

Why is it reported?

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

The @phpstan-require-extends PHPDoc tag references an interface that has been marked as @deprecated. Deprecated interfaces are planned for removal in a future version.

Note: triggering this identifier requires @phpstan-require-extends to reference an interface, but this tag expects a class. PHPStan therefore always also reports a requireExtends.interface error alongside this one, and in practice the deprecation identifier is not reported.

How to fix it

Update the @phpstan-require-extends tag to reference a non-deprecated class:

 /**
- * @phpstan-require-extends OldInterface
+ * @phpstan-require-extends NewBaseClass
  */
 trait MyTrait
 {
 }