Driver method
$ num = 5 ; print ( " Factorial ▁ of ▁ " . $ num . " ▁ using ▁ Recursion ▁ is : ▁ " . factorialUsingRecursion ( 5 ) . " STRNEWLINE " ) ; print ( " Factorial ▁ of ▁ " . $ num . " ▁ using ▁ Iteration ▁ is : ▁ " . factorialUsingIteration ( 5 ) . " STRNEWLINE " ) ; ? >