VIEW : Upload File Menggunakan CodeIgniter

<?php echo form_open_multipart('uploadFile/do_upload'); ?>
<input type="submit" style="border: 1px solid #D0D0D0;padding: 5px;width: 100px;border-radius: 4px 4px 4px 4px;" value="Simpan"/>
<input type="file" name="userfile" id="userfile"/>
</form>