class.implementsDeprecatedInterface

Code example

<?php declare(strict_types = 1);

/** @deprecated Use NewInterface instead */
interface OldInterface
{
	public function doSomething(): void;
}

class Foo implements OldInterface
{
	public function doSomething(): void
	{
	}
}

Why is it reported?

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

A class implements an interface that has been marked as @deprecated. Implementing deprecated interfaces ties your class to contracts that are planned for removal.

In the example above, class Foo implements OldInterface, which is deprecated.

How to fix it

Replace the deprecated interface with its recommended replacement:

 <?php declare(strict_types = 1);

-class Foo implements OldInterface
+class Foo implements NewInterface
 {
 	public function doSomething(): void
 	{
 	}
 }