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Posted by Edward Vermillion on 11/05/89 11:22
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.
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