requireExtends.deprecatedClass

This error is reported by phpstan/phpstan-deprecation-rules.

Code example

<?php declare(strict_types = 1);

/** @deprecated Use NewBase instead */
class OldBase
{

}

/**
 * @phpstan-require-extends OldBase
 */
interface HasOldBase
{

}

Why is it reported?

The @phpstan-require-extends PHPDoc tag references a class that has been marked as deprecated. Using a deprecated class in a require-extends constraint means that any class implementing this interface or using this trait would be required to extend a deprecated class, which should be avoided.

How to fix it

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

 <?php declare(strict_types = 1);

 /**
- * @phpstan-require-extends OldBase
+ * @phpstan-require-extends NewBase
  */
 interface HasOldBase
 {

 }