[PHP-NOTES] note 130484 added to function.get-class

If get_class is used to test if an object is of some class, then instanceof should be used instead.
----
Server IP: 45.112.84.4
Probable Submitter: 80.90.5.137 (proxied: 89.159.108.4)
----
Manual Page -- https://php.net/manual/en/function.get-class.php
Edit        -- https://main.php.net/note/edit/130484
Del: integrated  -- https://main.php.net/note/delete/130484/integrated
Del: useless     -- https://main.php.net/note/delete/130484/useless
Del: bad code    -- https://main.php.net/note/delete/130484/bad+code
Del: spam        -- https://main.php.net/note/delete/130484/spam
Del: non-english -- https://main.php.net/note/delete/130484/non-english
Del: in docs     -- https://main.php.net/note/delete/130484/in+docs
Del: other reasons-- https://main.php.net/note/delete/130484
Reject      -- https://main.php.net/note/reject/130484
Search      -- https://main.php.net/manage/user-notes.php