这个recaptcha有什么问题

Question

我一直试图让这个验证码工作一段时间，但无论我尝试做什么，我都无法让它工作。

当我将 !== 更改为 != 正如有人建议的那样，当我按下表单的 "submit" 按钮时，即使按下 recaptacha 框，表单提交也会通过 "TRUE" 响应或者只是忽略按下它。 var_dump($responseKeys) 的输出总是给我一个 "NULL" 值，所以我不知道哪里出了问题。

谁能看出它为什么不起作用？

**PHP**

    // check captcha

 if(isset($_POST)){     
        $captcha=$_POST['g-recaptcha-response'];
        $ip = $_SERVER['REMOTE_ADDR'];
        $secretkey = "SECRET KEY";                    
        $response=file_get_contents("https://www.google.com/recaptcha/api/siteverify?secret=".$secretkey."&response=".$captcha."&remoteip=".$ip);
        $responseKeys = json_decode($response,true);         


    if(intval($responseKeys["success"]) != 1) {

        //echo 'TRUE';
        //echo "<br>";
        //echo var_dump($responseKeys)."<br>";
        //exit;

    } else {

        //echo 'FALSE';
        //echo "<br>";
        //echo var_dump($responseKeys)."<br>";
        // exit;        
    }                   
}

HTML

**<div class="span9 page_sidebar registerForm">
<?php
if (isErrors())
{
    echo outputErrors();
}
?>
<div class="well">
    <p>
        <?php echo t('register_intro_text', 'Please enter your information below to register for an account. Your new account password will be sent to your email address.'); ?>
    </p>
    <form id="regerform" method="post" action="https://<?php echo _CONFIG_SITE_FULL_URL; ?>/register.<?php echo SITE_CONFIG_PAGE_EXTENSION; ?>" class="form">
        <div class="third">
            <label for="title">
                <?php echo t("title", "title"); ?>:
            </label>
            <select autofocus="autofocus" tabindex="1" id="title" name="title">
                <option value="Mr"><?php echo t('title_mr', 'Mr'); ?></option>
                <option value="Mrs"><?php echo t('title_mrs', 'Mrs'); ?></option>
                <option value="Miss"><?php echo t('title_miss', 'Miss'); ?></option>
                <option value="Dr"><?php echo t('title_dr', 'Dr'); ?></option>
                <option value="Pro"><?php echo t('title_pro', 'Pro'); ?></option>
            </select>
        </div>
        <div class="third">
            <label for="firstname">
                <?php echo t("firstname", "firstname"); ?>:
            </label>
            <input type="text" tabindex="1" value="<?php echo isset($firstname) ? safeOutputToScreen($firstname) : ''; ?>" id="firstname" name="firstname">
        </div>
        <div class="thirdLast">
            <label for="lastname">
                <?php echo t("lastname", "lastname"); ?>:
            </label>
            <input type="text" tabindex="1" value="<?php echo isset($lastname) ? safeOutputToScreen($lastname) : ''; ?>" id="lastname" name="lastname">
        </div>
        <div class="clear"></div>
        <div>
            <label for="emailAddress">
                <?php echo t("email_address", "email address"); ?>:
            </label>
            <input type="text" tabindex="1" value="<?php echo isset($emailAddress) ? safeOutputToScreen($emailAddress) : ''; ?>" id="emailAddress" name="emailAddress">
        </div>
        <div>
            <label for="emailAddressConfirm">
                <?php echo t("email_address_confirm", "Email Confirm"); ?>:
            </label>
            <input type="text" tabindex="2" value="<?php echo isset($emailAddressConfirm) ? safeOutputToScreen($emailAddressConfirm) : ''; ?>" id="emailAddressConfirm" name="emailAddressConfirm">
        </div>
        <div class="thirdLast">
            <label for="username">
                <?php echo t("username", "username"); ?>:
            </label>
            <input type="text" tabindex="3" value="<?php echo isset($username) ? safeOutputToScreen($username) : ''; ?>" id="username" name="username">
        </div>
        <div class="clear"></div>

        <?php if(SITE_CONFIG_REGISTER_FORM_SHOW_CAPTCHA == 'yes'): ?>



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



        <?php endif; ?>

                    <div class="buttonWrapper">
            <button type="submit" name="submit" class="btn btn-primary" tabindex="99"><?php echo t("register", "register"); ?></button>
        </div>

        <input type="hidden" value="1" name="submitme"/>
    </form>

    <div class="disclaimer">
        <?php echo t('by_clicking_register_you_agree_to_our_terms', 'By clicking \'register\', you agree to our <a href="terms.[[[SITE_CONFIG_PAGE_EXTENSION]]]" target="_blank">terms</a>.', array('SITE_CONFIG_PAGE_EXTENSION'=>SITE_CONFIG_PAGE_EXTENSION)); ?>
    </div>
    <div class="clear"></div>
</div>

**

Answer 1

验证用户的方法有点不同。 g-recaptcha-response 通过 POST 请求发送到您的服务器端脚本，以及您在注册时获得的 reCAPTCHA 密钥，您将其传递给 Google 以判断用户是否是机器人。响应是 JSON 响应，因此我们将使用 file_get_contents() 和 json_decode() 来获取响应并决定我们的脚本从那里做什么。这个例子会给你一个想法来编写你自己的代码。

$response = $_POST["g-recaptcha-response"];
$url = 'https://www.google.com/recaptcha/api/siteverify'; 
//verify your site
$data = array(
    'secret' => 'YOUR_SECRET', 
    'response' => $_POST["g-recaptcha-response"]
);
$options = array(
    'http' => array (
        'method' => 'POST',
        'content' => http_build_query($data)
    )
);
$context  = stream_context_create($options);
$verify = file_get_contents($url, false, $context);
$captcha_success=json_decode($verify);
if ($captcha_success->success==false) {
    echo "<p>You are a bot! Go away!</p>";
} else if ($captcha_success->success==true) {
    echo "<p>You are not not a bot!</p>";
}

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