I don't know why you say that. You can save data created inside the function in a variety of ways and formats. Or, you can also return the variables to the calling function and save them there instead. Or you can actually do both if you want.
Perhaps if you shared a simplified snippet of what you want to do, we could guide you. And tell us
- what variable(s) you want to save
- where you want to save it (in the script or the function)
- what format do you want to save in (text file, spreadsheet, .mat file, image file, sound file, etc.)
