The name of the output type needs to be specified in parentheses before the variable that is to be cast. Some examples are :
* (array) – casts to array
* (bool), (boolean) – casts to Boolean
* (double), (float), (real) – casts to float
* (int), (integer) – casts to integer
* (object) – casts to object
* (string) – casts to string
