Using nested ternary operators [duplicate]

Question

I've been trying to use isset() in nested form like below:

isset($_POST['selectedTemplate'])?$_POST['selectedTemplate']:isset($_GET['selectedTemplate'])?$_GET['selectedTemplate']:0 

But seems I'm missing something. Can anyone assist me how to do it?

Answer 1

Wrap it in parentheses:

$selectedTemplate = isset($_POST['selectedTemplate'])                   ? $_POST['selectedTemplate']                   : (                        isset($_GET['selectedTemplate'])                        ? $_GET['selectedTemplate']                        : 0                   ); 

Or even better, use a proper if/else statement (for maintainability):

$selectTemplate = 0;  if (isset($_POST['selectedTemplate'])) {     $selectTemplate = $_POST['selectedTemplate']; } elseif (isset($_GET['selectedTemplate'])) {     $selectTemplate = $_GET['selectedTemplate']; } 

---

However, as others have pointed out: it would simply be easier for you to use $_REQUEST:

$selectedTemplate = isset($_REQUEST['selectedTemplate'])                   ? $_REQUEST['selectedTemplate']                   : 0; 

Answer 2

As of PHP 7 we can use Null coalescing operator

$selectedTemplate = $_POST['selectedTemplate'] ?? $_GET['selectedTemplate'] ?? 0;