if ($value != null) {
             print $value . "\n";
         } else {
             print "NULL\n";
         }
         break;
     case "NUMEQUALTO":
         if (count($parts) != 2) {
             print "Invalid input\n";
             $loopCondition = false;
             break;
         }
         print $simpleDB->getValueCount($parts[1]) . "\n";
         break;
     case "BEGIN":
         $simpleDB->beginTransaction();
         break;
     case "ROLLBACK":
         if (!$simpleDB->rollBack()) {
             print "NO TRANSACTION\n";
         }
         break;
     case "COMMIT":
         if (!$simpleDB->commit()) {
             print "NO TRANSACTION\n";
         }
         break;
     default:
         $loopCondition = false;
         break;
 }