验证码是一种用于验证用户身份或确保用户操作安全的技术手段。它通常以图形、声音或文字的形式出现，要求用户在登录、注册或进行特定操作之前输入正确的验证码。
This is very similar to a question I asked the other day but my page code has become significantly more complicated and I need to revisit it.I\'ve been using the following code:
加载中,请稍侯......