> One right way to do this is:
>
> if (array_key_exists($key, $array)) {
> // Life is good.
> $value = $array[$key];
> } else {
> // Erm, it doesn't exist. Now what?
> // Typically either set to NULL or throw error.
> }
For a long time I've used
isset($array[$key])
how's that different from array_key_exists? The article at
http://gen5.info/q/2008/07/17/the-semantics-of-dictionaries-maps-and-hashtables/
tries to capture a similar logic into a single function, array_get()
Overall I think logic like the code sample you give should be condensed into a
function for several reasons: the most serious is that duplicated logic can
hide errors.
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