我如何简单地验证Recaptcha

本文介绍了我如何简单地验证Recaptcha的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我已经从Google Developers示例复制了reCaptcha代码，输入了我的网站密钥，它适用于所有3种方法。

我的编码经验可以追溯到vb6。

我想要做的就是使用reCaptcha来验证人是否正在使用我的联系页面并阻止发送按钮工作，直到reCaptcha验证了ihem。

我使用Dreamweaver创建我的网站。

I've copied the reCaptcha code from Google Developers example, entered my site key and it works for all 3 methods.
My coding experience dates back to vb6.
All i want to do is use reCaptcha to verify that a Human is using my contact page and prevent the send button from working until reCaptcha has verified ihem.
I use Dreamweaver to create my site.

推荐答案

<!DOCTYPE html>
<html>
  <head>
    <title></title>
    <script>
      var opt_widget_id;

      var onloadCallback = function() {
          opt_widget_id = grecaptcha.render('html_element', {
          'sitekey' : 'put your key here'});
      };
    </script>
  </head>
  <body>
    <form  action="response.php" method="POST">
      <input type="text" name="myname" value="" placeholder="Enter your name">
      <div id="html_element"></div>
      <br>
      <input type="submit" value="Submit">
    </form>
    <script src="https://www.google.com/recaptcha/api.js?onload=onloadCallback&render=explicit" async defer></script>
  </body>
</html>

index.html页面将接受一个名为myname的用户输入，用于发布到response.php，如下所示：

The "index.html" page will accept a user's input called "myname" for posting to "response.php" as shown:

<?php
   if(empty(

）

点击提交按钮时， myname和他的验证码响应g-recaptcha-response将被发布到response.php，它将检查它是否为空（这意味着它已被验证）。如果g-recaptcha-response为空，它将被重定向回index.html。

要了解有关网络如何工作的更多信息，请查看以下内容：

[]。

PS实际上，Ajax将是最合适的技术。但我认为信息超载。

When the submit button is clicked, the "myname" and his captcha response "g-recaptcha-response" will be posted over to the response.php which will check that it is not empty (which means it has been verified). If the "g-recaptcha-response" is empty, it will be redirected back to the index.html.
To learn more about how the web works, check this out:
PHP 5 Form Handling[^].
P.S. Actually, Ajax will be the most suitable technology to use here. But I consider it information overload.

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ReCaptcha