note 86051 added to function.is-subclass-of

It would appear that is_subclass_of is case insensitive unlike get_class in php5.
i.e.
class fooBar {}
class bar extends fooBar {}

assert(get_class(new fooBar()) == "fooBar")
assert(is_subclass_of(new bar(), "foobar") == true)

i run across this while migrating some code from php4 to php5 and the code would only half-the-time break.
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Server IP: 219.94.145.73
Probable Submitter: 58.5.213.146
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Manual Page -- http://www.php.net/manual/en/function.is-subclass-of.php
Edit        -- https://master.php.net/note/edit/86051
Del: integrated  -- https://master.php.net/note/delete/86051/integrated
Del: useless     -- https://master.php.net/note/delete/86051/useless
Del: bad code    -- https://master.php.net/note/delete/86051/bad+code
Del: spam        -- https://master.php.net/note/delete/86051/spam
Del: non-english -- https://master.php.net/note/delete/86051/non-english
Del: in docs     -- https://master.php.net/note/delete/86051/in+docs
Del: other reasons-- https://master.php.net/note/delete/86051
Reject      -- https://master.php.net/note/reject/86051
Search      -- https://master.php.net/manage/user-notes.php