$_GET[$formName] = 1;

$formName = $_POST['form_name'];

$errors = validateForm($required, $users);

if (count($errors)) {
        $_GET[$formName] = 1;
    } else {
        switch ($formName) {

            /*** ADD TASK ***/
            case 'add_task':
                if (isset($_FILES['task-attachment'])) {
                    $file_name = $_FILES['task-attachment']['name'];
                    $file_path = __DIR__ . '/uploads/';

                    move_uploaded_file($_FILES['task-attachment']['tmp_name'], $file_path . $file_name);
                }