>%m< >''< >%m INVALID<
>%s< >sprintf('%%n%n %d', $n, $n)< >%n 2< >Slight sneakiness to test %n<
>%s< >$n="abc"; sprintf(' %n%s', substr($n,1,1), $n)< > a1c< >%n w/magic<
->%s< >sprintf('%s%n', chr(256)x5, $n),$n< >5< >Unicode %n<
+>%s< >no warnings; sprintf('%s%n', chr(256)x5, $n),$n< >5< >Unicode %n<
>%o< >2**32-1< >37777777777<
>%+o< >2**32-1< >37777777777<
>%#o< >2**32-1< >037777777777<