regex, how to allow spaces

Question

Here it is:

'/^\b[a-z]{0,20}$/i'

I'm trying to match work positions:

"Employee", "Daily Manager"++.

I need to allow A-Za-z + spaces and lenght from 0-20

Any help?

Answer 1

[\w ]{0,20}

Furthermore \s covers all white spaces.

Answer 2

What about

'/^\b[a-z ]{0,20}$/i'

Answer 3

'/^\b[a-z ]{0,20}$/i' simple