php-8.0.30-src/Zend/tests/inter_03.phpt

--TEST--
Testing interface constants with inheritance
--FILE--
<?php

interface a {
    const b = 2;
}

interface b extends a {
    const c = self::b;
}

var_dump(b::c, a::b);

?>
--EXPECT--
int(2)
int(2)