interface.extendsDeprecatedClass

Code example

<?php declare(strict_types = 1);

/** @deprecated Use NewService instead */
class OldService
{
}

interface MyInterface extends OldService
{
}

Why is it reported?

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

An interface extends a class that has been marked as @deprecated. Deprecated classes are planned for removal in a future version.

Note: triggering this identifier requires an interface to extend a class, which PHP itself forbids. PHPStan therefore always also reports a non-ignorable interfaceExtends.class error alongside this one.

How to fix it

Extend a proper interface instead of a deprecated class:

-interface MyInterface extends OldService
+interface MyInterface extends NewServiceInterface
 {
 }