使用谷歌验证码总是显示'incorrect-captcha-sol'

我试图在我的网站上使用谷歌reCaptcha，在遵循几个教程之后，我在我的HTML页面上使用如下:

<section class="row" id="Contact">
        <div class="col-full">
             <form method="post" action="contact.php">
                <input name="sender" placeholder="Name" size="30"><br><br>
                <input name="senderEmail" placeholder="Email" size="30"><br><br>
                <textarea rows="10" cols="30" name="message" placeholder="Message"></textarea><br><br>
                <div class="g-recaptcha" data-sitekey="6LdFOQcTAAAAABKsku3bD6Mp3HuGYNDRN1tLlSkw"></div><br>
                <input type="submit" name="submit">
            </form>
        </div>
</section>

在<head>标签内使用以下内容:

    <script src='https://www.google.com/recaptcha/api.js'></script>

表单加载如下PHP脚本，如Google的教程所示:

<?php
require_once('recaptchalib.php');
echo "<pre> _POST: =========n";
print_r($_POST);
echo "n=========n</pre>";
$privatekey = "privatekey";
$resp = recaptcha_check_answer ($privatekey,
                             $_SERVER["REMOTE_ADDR"],
                             $_POST["recaptcha_challenge_field"],
                             $_POST["recaptcha_response_field"]);
if (!$resp->is_valid)
{
  die ("The reCAPTCHA wasn't entered correctly. Go back and try it again." .
    "(reCAPTCHA said: " . $resp->error . ")");
}

问题是我总是得到错误incorrect-captcha-sol，不能理解为什么。我从PHP脚本得到的输出是:

 _POST: =========
Array
(
 [g-recaptcha-response] => 03AHJ_VusLbTZVbhMBH2-cyOdbM81IoG7ShDtTmyVa8e34PbghyKaRYnrb4bbeuPoJXFa-2sD5B-UIOWq_zClya-VOtq8iLHXBkAR0PrElQYiQjKTm2POkjci43-yEaenh1tu_M4vKsjJGswKFlVs6IdlWhdVaMdznLBeutgHjiHRBy7fzAi0It0x5IadwMxAqVpmG7F1gRvUcQmakij4ObTqPUK4lPdc84HkkKmY62uJ45d8DwKSeR2ifRg6wL9JFxpcZkjSp4oIlltin2uCMiBDU58QQQLLKPJuSKcmm-N5p7OEt7E6gc4UZyTLpKrJ-9mMUusvLpixwFHop0e5155vEZssxzu6Zizo-LyB1mX3XOrQ8LEceydssgLvl9gJBC4f9zDBKPQdLmjfxVKdPCXLtUZVNbMDYe7cNL7gsgwJC-hLbZYTh6UV1nUdKnFnkHAACjI7M28hpKWdiyIwcJ5UAzTMPfIllMw
)
=========

为什么我没有recaptcha_challenge_field或recaptcha_response_field字段在我的POST，我怎么能解决它?

我使用的验证码如下:

在header中:

<script src='https://www.google.com/recaptcha/api.js'></script>

这是你想要实际验证码的位置:

<div class="g-recaptcha" data-sitekey="PUBLIC_KEY_HERE"></div>

你可以把这个添加到div中来改变主题:data-theme="theme"

这是PHP脚本:

if(isset($_POST['g-recaptcha-response']))
$captcha=$_POST['g-recaptcha-response'];
if(!$captcha){
    //Captcha hasn't been checked
}
$response=json_decode(file_get_contents("https://www.google.com/recaptcha/api/siteverify?secret=SECRET_KEY_HERE&response=".$captcha."&remoteip=".$_SERVER['REMOTE_ADDR']), true);
if($response['success'] == false){
    //Captcha incorrect
}
else {
    //Success code here
}

从我可以看到你没有一个else选项后，你检查的答案。你检查它是否错了，但没有什么告诉它如果用户输入正确该怎么做。试着添加如下内容:

if (!$resp->is_valid) {
    die ("The reCAPTCHA wasn't entered correctly. Go back and try it again." . "(reCAPTCHA said: " . $resp->error . ")");
}
else {
    //Code for success here
}

我使用Google New reCaptcha

https://github.com/google/recaptcha规范

是单机包。

captcha失败后，我使用jquery代码重新加载capctha

grecaptcha.reset();

因为recapctha响应在验证后过期，captcha没有重新加载，所以它会一次又一次地发送过期响应，直到你不重新加载页面以获得新的captcha码。

验证代码

require('/path/to/recaptcha/autoload.php');
$recaptcha = new ReCaptchaReCaptcha($secret);
$resp = $recaptcha->verify($gRecaptchaResponse, $remoteIp);
if ($resp->isSuccess()) {
} else { $errors = $resp->getErrorCodes();
foreach ($errors as $code) {
echo "<div class="alert alert-danger">$code</div>";
}
echo "<p><strong>Note:</strong> Error code <tt>missing-input-response</tt> may mean the user just didn't complete the reCAPTCHA.</p>";
}

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