Yeti wrote:
You might also want to try array_key_exists
if (array_key_exists('loggedin', $_SESSION['userInfo'])) {
// do something with $_SESSION['userInfo']['loggedin']
}
You'd first need to check that the key 'userInfo' existed in the
$_SESSION array too.
Personally, I very rarely see the point in using array_key_exists...
It's a function call and has overhead where as isset() and empty() are
language constructs and (I would hope) are much more efficient (although
I've not done any benchmarks).
There are cases where you may want to use array_key_exists where isset()
and empty() would fail, e.g.
$arr['foo'] = null;
isset($arr['foo']) == false
!empty($arr['foo']) == false
array_key_exists('foo', $arr) == true
Col
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Colin Guthrie
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http://colin.guthr.ie/
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