Re: PHP boolean's

On Sat, 31 May 2008 14:31:51 +0200, Michael Fesser <netizen@xxxxxx> wrote:

.oO(Michael Sharman)

I suppose I can also do;

if(!($count % 2))

Yes. But even if this is documented behaviour, it's usually recommended
to explicitly write what you want to test for. In this case you're not
testing a boolean value ('!' is a logical operator), but an arithmetic
expression. So you should better write it as

if ($count % 2 == 0) {
...
}

This is cleaner and more readable code. Another example: The typical
shorthand way for testing if an array is empty or not is

if (!$someArray) {
...
}

But the better way is

if (empty($someArray)) {
...
}

One could even argue using if(count($someArray) == 0) is better, as empty() will not only work for arrays , but for a whole list of empty values ('',0,null, etc.). Using the count function does immediatly issue an error (non-fatal) when $someArray is not an array, making it more easy to track bugs and errors. That being, said, I usually do use empty() though :).
--
Rik Wasmus
....spamrun finished
.

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