Check if multiple strings are empty [duplicate]

Answer 1

<input type="text" name="required[first_name]" />
<input type="text" name="required[last_name]" />
...


$required = $_POST['required'];
foreach ($required as $req) {
   $req = trim($req);
   if (empty($req))
      echo 'gotcha!';
}

/* update */

OK! guys, easy...

You can make it more secure, just with type casting as all we programmers do for out coming data, like $id = (int) $_GET['id'], like $username = (string) addslashes($_POST['username']) and so on...;

$required = (array) $_POST['required'];

And then, what ever comes from post fields let them come, this code just seek what it need. That is it! Uhh...