Re: define (true/false)

John Nichel wrote:

Jay Blanchard wrote:

[snip] never want to use a variable to determine a constant because the variable is not likely to be the same (that is why we call them variables) on any iteration. Using constants in expressions is OK, for instance if(BAR == $foo){ ...stuff... } But modifying a constant is a no-no.

I may be misunderstanding you here, but I don't see why you would not want to use a variable to define a constant. I do it from time to time, most common would be in a config document where I'll check if the page is being accessed via http or https, and define a constant based on that. I know I could use a variable for this, but I like using the constant for it's global scope in that case.

I do the same thing. Another thing I like about using "variable" constants in *some* cases is that they can't be reset to something else. So if I do something boneheaded in my application, it's not gonna screw everything up, or at least not leave me open to some kind of unforseen attack.