How do check if a PHP session is empty?

Question

Is this bad practice?

if ($_SESSION[\'something\'] == \'\')
{
    echo \'the session is empty\';
}

Is there a way to check if its empty or

Answer 1

Use isset, empty or array_key_exists (especially for array keys) before accessing a variable whose existence you are not sure of. So change the order in your second example:

if (!isset($_SESSION['something']) || $_SESSION['something'] == '')