php-codesniffer/tests/DigiComp/Sniffs/Commenting/data/comments.php

<?php

class A {
    /**
     * @var string
     */
    protected $var;
}

class B extends A {
    /**
     * @inheritDoc
     */
    protected $var;
}

class C extends A {
    /**
     * No inherit
     */
    protected $var;
}

class D extends a {
    protected $var;
}