staticProperty.internalInterface

Code example

<?php declare(strict_types = 1);

namespace Vendor {
	/**
	 * @internal
	 * @property string $name
	 */
	interface Config {
	}
}

namespace App {
	function test(): mixed {
		return \Vendor\Config::$name; // error: Access to static property on internal interface Vendor\Config.
	}
}

Why is it reported?

A static property is being accessed on an interface that is marked as @internal. Internal interfaces are not part of the public API of the package that defines them. They may change or be removed in any version without notice.

How to fix it

Use the public API of the package instead of accessing static properties on internal interfaces:

 namespace App {
 	function test(): mixed {
-		return \Vendor\Config::$name;
+		return \Vendor\PublicConfig::$name;
 	}
 }

If the interface is internal to your own project, the error will not be reported when accessing it from within the same root namespace.