Calling static methods on an interface that has `__callStatic` is allowed

[azjezz]

Description

Calling a static method on an interface should not be allowed as __callStatic is abstract.

This issue seems to have started with PHP 8.0

The following code:

<?php

interface Foo {
    public static function __callStatic($method, $args);
}

Foo::bar();

Resulted in this output:

But I expected this output instead:

Error: cannot call static methods on an interface

PHP Version

PHP >=8.0.0

Operating System

N/A

[azjezz]

ref:

• https://3v4l.org/WSEC0
• https://3v4l.org/Iv2KT

[TimWolla]

The same problem also exists with regular abstract classes:

<?php

abstract class Foo {
    abstract public static function __callStatic($method, $args);
}

Foo::bar();