Does PHP functions needs return any value?

Question

Is it necessary to return any value or does it improve the speed? Sometimes its needed to code functions that not necessary return a value, some just do a set of functions or echo something. Does returning a value improves 'something'?, something like return true or return false?

Answer 1

PHP functions do not need to return anything, and I doubt it would negatively affect the performance if you didn't return anything. If anything, it would positively affect the performance.

Answer 2

No, returning a value from a function does not improve the speed of your script.

You do not need to return values from functions -> it is completely optional.