在单个语句中检索$ _GET属性

Question

Currently, I check to see if a $_GET or $_POST property is set by using empty(). Like this:

$status = null;

if (!empty($_GET['foo'])) {
    $status = $_GET['foo'];
}

I imagine there is an even more concise way of doing the same thing built into PHP, that like what I'm doing now with empty, also avoids printing the notice saying undefined index. Maybe something like this:

$status = something($_GET['foo']);

Or, maybe I should just ignore the notice and do:

$status = $_GET['foo'];

Answer 1

I'm not sure what the problem is as empty() does not generate a warning for undefined variables, but if you want it in one line, you can use a ternary expression:

$status = empty($_GET['foo']) ? null : $_GET['foo'];