The engine does not mind whitespace. Infact, this is valid: $TestVar
=
4
;
Its crazy, but it works. This is also valid: $TestVar=4;. No whitespace is needed AT ALL exempt in strings.
Strings are freeform except for newline characters. You don't NEED spaces and in fact in some cases you don't want spaces in your strings. echo("Testvar1"); is just as valid as echo("Test Variable One");, one just takes less time to type a thousand thousand times for when you're debugging.
EDIT: Obviously, I'm talking about the actual return character in the script itself - all the escape characters for it and NL are all fine.