//$func = unserialize($_SESSION['func']);
 switch ($_POST['f']) {
     case 'show_databases':
         $func = new Funciones();
         $res = $func->connect($_POST['bd_server'], $_POST['bd_user'], $_POST['bd_password']);
         if (!$res) {
             $data['valid'] = 0;
             $data['msg'] = "No se pudo conectar a la base de datos.";
         } else {
             //$data['valid'] = 1;
             //$data['msg'] = "Conexión realizada con éxito.";
             echo json_encode($func->show_databases());
         }
         break;
     case 'add_dummy':
         echo json_encode($func->add_cron_line_dummy());
         break;
     case 'view_jobs':
         echo $func->view_jobs();
         break;
     case 'delete_jobs':
         echo $func->delete_jobs();
     case 'add_job':
         $_POST['command'] = $func->base_url . "bd_backup.sh";
         echo $_POST['command'];
         foreach ($_POST as $key => $value) {
             if ($value == "") {
                 $_POST[$key] = "empty";
             }
         }
         echo $func->add_cron_line($_POST);