Re: [PHP] Has this always been the case?
[email protected] (Stuart Dallas)
| Newsgroups | php.general |
|---|---|
| Message-ID | <[email protected]> |
On 31 May 2013, at 12:17, shiplu <[email protected]> wrote: > On Fri, May 31, 2013 at 5:12 PM, Stuart Dallas <[email protected]> wrote: >> That is not entirely correct. It must be a literal value. The expression 'a'.'b' is a constant value. >> I may be being overly picky here, but I think it's an important distinction. >> > > I thought 'a'. 'b' is a constant expression and 'ab' is a constant value. Correct me if I am wrong. You're correct that 'a'.'b' is a constant expression, but I wouldn't call 'ab' a constant value, it's a literal [1]. While "constant value" makes logical sense there is a long history of agreed terminology for these things and you will find that using it will enable smoother communication with fellow developers. Initial values of class constants and member variables must be literals as they are defined not evaluated. -Stuart [1] http://en.wikipedia.org/wiki/Literal_(computer_programming) -- Stuart Dallas 3ft9 Ltd http://3ft9.com/