note 129349 added to function.is-subclass-of

In addition to Anonymous's post above regarding using this to determine whether your class has been inherited or not, you may also use this in static methods as follows: <?php class a { public static function check() { return is_subclass_of(static::class, self::class); } } class b extends a {} echo a::check() ? "Yes" : "No"; echo PHP_EOL; echo b::check() ? "Yes" : "No"; echo PHP_EOL; ?> Prints: No Yes ---- Server IP: 45.112.84.4 Probable Submitter: 80.90.13.131 (proxied: 161.8.228.28) ---- Manual Page -- https://php.net/manual/en/function.is-subclass-of.php Edit -- https://main.php.net/note/edit/129349 Del: integrated -- https://main.php.net/note/delete/129349/integrated Del: useless -- https://main.php.net/note/delete/129349/useless Del: bad code -- https://main.php.net/note/delete/129349/bad+code Del: spam -- https://main.php.net/note/delete/129349/spam Del: non-english -- https://main.php.net/note/delete/129349/non-english Del: in docs -- https://main.php.net/note/delete/129349/in+docs Del: other reasons-- https://main.php.net/note/delete/129349 Reject -- https://main.php.net/note/reject/129349 Search -- https://main.php.net/manage/user-notes.php