for($i=1; $i<=5;$i++){
            var_dump($i);
            if (! isset ($_FILES['file_upload."'.$i.'"']) || $_FILES['file_upload."'.$i.'"']['error'] != 0 || !preg_match($allowed_file_types, $_FILES['file_upload."'.$i.'"']['name'])){
            $errors[] = 'Gelieve een geldige file te uploaden.';

            }else{
            if (!is_dir($config->uploadDocumentDir)){
                mkdir($config->uploadDocumentDir, 0777);
            }

            move_uploaded_file($_FILES['file_upload."'.$i.'"']['tmp_name'], $config->uploadDocumentDir.$_FILES['file_upload."'.$i.'"']['name']);

            $inhoud = 'De file'.$_FILES['file_upload."'.$i.'"']['name'] .' werd geupload op '.date('Y:m:d');
            if (($error = $config->schrijfNaarFile($config->logdir, $inhoud)) === true){
                $postedVals['file_upload."'.$i.'"'] = $config->base_url.'/project_file_uploads/'.$_FILES['file_upload."'.$i.'"']['name'];
                $_SESSION['doc_upload_name'] = $_FILES['file_upload."'.$i.'"']['name'];

            }else{
                 // Error message
            }
            }


        }
         var_dump($_SESSION['doc_upload_name']);