Driver code
$ Heads = 100 ; $ Legs = 300 ; $ Rabbits = countRabbits ( $ Heads , $ Legs ) ; echo " Rabbits = " ▁ , ▁ $ Rabbits ▁ , ▁ " " ; STRNEWLINE echo ▁ " Pigeons = " $ Rabbits , " STRNEWLINE " ; ? >