我刚刚设置了新的带有复选框的谷歌验证码，它在前端工作正常，但是我不知道如何使用PHP在服务器端处理它。我尝试使用下面的旧代码，但即使验证码无效，表单也会发送。
require_once('recaptchalib.php');
$privatekey = "my key";
$resp = recaptcha_check_answer ($privatekey,
$_SERVER["REMOTE_ADDR"],
$_POST["recaptcha_challenge_field"],
$_POST["recaptcha_response_field"]);
if (!$resp->is_valid) {
$errCapt='<p style="color:#D6012C ">The CAPTCHA Code wasnot entered correctly.</p>';}
私钥安全
虽然这里的答案肯定有效，但他们使用的是GET请求，这会暴露您的私钥（即使使用了https）。在谷歌开发者上，指定的方法POST 。
有关更多详细信息：https://stackoverflow.com/a/323286/1680919
通过开机自检进行验证
function isValid()
{
try {
$url = 'https://www.google.com/recaptcha/api/siteverify';
$data = ['secret' => '[YOUR SECRET KEY]',
'response' => $_POST['g-recaptcha-response'],
'remoteip' => $_SERVER['REMOTE_ADDR']];
$options = [
'http' => [
'header' => "Content-type: application/x-www-form-urlencoded'r'n",
'method' => 'POST',
'content' => http_build_query($data)
]
];
$context = stream_context_create($options);
$result = file_get_contents($url, false, $context);
return json_decode($result)->success;
}
catch (Exception $e) {
return null;
}
}
：我使用"新"数组语法（[和]而不是array(..)）。如果您的 php 版本还不支持此功能，则必须相应地编辑这 3 个数组定义（请参阅注释）。
值：此函数返回true用户是否有效，如果无效，则返回false，如果发生错误则返回null。例如，您只需编写if (isValid()) { ... } <</p>
解决方案
索引.html
<html>
<head>
<title>Google recapcha demo - Codeforgeek</title>
<script src='https://www.google.com/recaptcha/api.js'></script>
</head>
<body>
<h1>Google reCAPTHA Demo</h1>
<form id="comment_form" action="form.php" method="post">
<input type="email" placeholder="Type your email" size="40"><br><br>
<textarea name="comment" rows="8" cols="39"></textarea><br><br>
<input type="submit" name="submit" value="Post comment"><br><br>
<div class="g-recaptcha" data-sitekey="=== Your site key ==="></div>
</form>
</body>
</html>
验证.php
<?php
$email; $comment; $captcha;
if(isset($_POST['email']))
$email=$_POST['email'];
if(isset($_POST['comment']))
$comment=$_POST['comment'];
if(isset($_POST['g-recaptcha-response']))
$captcha=$_POST['g-recaptcha-response'];
if(!$captcha){
echo '<h2>Please check the the captcha form.</h2>';
exit;
}
$response = json_decode(file_get_contents("https://www.google.com/recaptcha/api/siteverify?secret=YOUR SECRET KEY&response=".$captcha."&remoteip=".$_SERVER['REMOTE_ADDR']), true);
if($response['success'] == false)
{
echo '<h2>You are spammer ! Get the @$%K out</h2>';
}
else
{
echo '<h2>Thanks for posting comment.</h2>';
}
?>
http://codeforgeek.com/2014/12/google-recaptcha-tutorial/
我不喜欢这些解决方案中的任何一个。我改用这个：
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://www.google.com/recaptcha/api/siteverify");
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, [
'secret' => $privatekey,
'response' => $_POST['g-recaptcha-response'],
'remoteip' => $_SERVER['REMOTE_ADDR']
]);
$resp = json_decode(curl_exec($ch));
curl_close($ch);
if ($resp->success) {
// Success
} else {
// failure
}
我认为这是优越的，因为您确保它被 POST 到服务器并且它不会发出尴尬的"file_get_contents"呼叫。这与此处描述的 recaptcha 2.0 兼容：https://developers.google.com/recaptcha/docs/verify
我觉得这更干净。我看到大多数解决方案都是file_get_contents的，当我觉得卷曲就足够了。
简单和最好的解决方案如下。
索引.html
<form action="submit.php" method="POST">
<input type="text" name="name" value="" />
<input type="text" name="email" value="" />
<textarea type="text" name="message"></textarea>
<div class="g-recaptcha" data-sitekey="Insert Your Site Key"></div>
<input type="submit" name="submit" value="SUBMIT">
</form>
提交.php
<?php
if(isset($_POST['submit']) && !empty($_POST['submit'])){
if(isset($_POST['g-recaptcha-response']) && !empty($_POST['g-recaptcha-response'])){
//your site secret key
$secret = 'InsertSiteSecretKey';
//get verify response data
$verifyResponse = file_get_contents('https://www.google.com/recaptcha/api/siteverify?secret='.$secret.'&response='.$_POST['g-recaptcha-response']);
$responseData = json_decode($verifyResponse);
if($responseData->success){
//contact form submission code goes here
$succMsg = 'Your contact request have submitted successfully.';
}else{
$errMsg = 'Robot verification failed, please try again.';
}
}else{
$errMsg = 'Please click on the reCAPTCHA box.';
}
}
?>
我从这里找到了这个参考和完整的教程 - 使用新的谷歌 reCAPTCHA 与 PHP
我喜欢Levit的答案，最终使用了它。但我只是想指出，以防万一，有一个官方的谷歌PHP库用于新的reCAPTCHA：https://github.com/google/recaptcha
最新版本（现在为 1.1.2）支持 Composer，并包含一个示例，您可以运行该示例以查看是否已正确配置所有内容。
下面您可以看到此官方库附带的部分示例（为清楚起见，我进行了一些小修改）：
// Make the call to verify the response and also pass the user's IP address
$resp = $recaptcha->verify($_POST['g-recaptcha-response'], $_SERVER['REMOTE_ADDR']);
if ($resp->isSuccess()) {
// If the response is a success, that's it!
?>
<h2>Success!</h2>
<p>That's it. Everything is working. Go integrate this into your real project.</p>
<p><a href="/">Try again</a></p>
<?php
} else {
// If it's not successful, then one or more error codes will be returned.
?>
<h2>Something went wrong</h2>
<p>The following error was returned: <?php
foreach ($resp->getErrorCodes() as $code) {
echo '<tt>' , $code , '</tt> ';
}
?></p>
<p>Check the error code reference at <tt><a href="https://developers.google.com/recaptcha/docs/verify#error-code-reference">https://developers.google.com/recaptcha/docs/verify#error-code-reference</a></tt>.
<p><strong>Note:</strong> Error code <tt>missing-input-response</tt> may mean the user just didn't complete the reCAPTCHA.</p>
<p><a href="/">Try again</a></p>
<?php
}
希望它对某人有所帮助。
使用 PHP 在服务器端进行验证。您需要考虑的两件最重要的事情。
1. $_POST['g-recaptcha-response']
2.$secretKey = '6LeycSQTAAAAAMM3AeG62pBslQZwBTwCbzeKt06V';
$verifydata = file_get_contents('https://www.google.com/recaptcha/api/siteverify?secret='.$secretKey.'&response='.$_POST['g-recaptcha-response']);
$response= json_decode($verifydata);
如果你$verifydata真的，你就完成了。
欲了解更多信息，请查看此
使用 PHP 的谷歌验证码 |只有 2 步集成
在上面的示例中。对我来说，这if($response.success==false)的事情是行不通的。这是正确的PHP代码：
$url = 'https://www.google.com/recaptcha/api/siteverify';
$privatekey = "--your_key--";
$response = file_get_contents($url."?secret=".$privatekey."&response=".$_POST['g-recaptcha-response']."&remoteip=".$_SERVER['REMOTE_ADDR']);
$data = json_decode($response);
if (isset($data->success) AND $data->success==true) {
// everything is ok!
} else {
// spam
}
它
与 mattgen88 类似，但我只是修复了CURLOPT_HEADER，并重新定义了数组，以便在 domain.com 主机服务器中工作。 这个在我的 XAMPP 本地主机上不起作用。那些小错误，但花了很长时间才弄清楚。此代码已在 domain.com 主机上进行了测试。
$privatekey = 'your google captcha private key';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://www.google.com/recaptcha/api/siteverify");
curl_setopt($ch, CURLOPT_HEADER, 'Content-Type: application/json');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, array(
'secret' => $privatekey,
'response' => $_POST['g-recaptcha-response'],
'remoteip' => $_SERVER['REMOTE_ADDR']
)
);
$resp = json_decode(curl_exec($ch));
curl_close($ch);
if ($resp->success) {
// Success
echo 'captcha';
} else {
// failure
echo 'no captcha';
}
这里有一个简单的例子。只要记得提供来自谷歌API的secretKey和siteKey。
<?php
$siteKey = 'Provide element from google';
$secretKey = 'Provide element from google';
if($_POST['submit']){
$username = $_POST['username'];
$responseKey = $_POST['g-recaptcha-response'];
$userIP = $_SERVER['REMOTE_ADDR'];
$url = "https://www.google.com/recaptcha/api/siteverify?secret=$secretKey&response=$responseKey&remoteip=$userIP";
$response = file_get_contents($url);
$response = json_decode($response);
if($response->success){
echo "Verification is correct. Your name is $username";
} else {
echo "Verification failed";
}
} ?>
<html>
<meta>
<title>Google ReCaptcha</title>
</meta>
<body>
<form action="index.php" method="post">
<input type="text" name="username" placeholder="Write your name"/>
<div class="g-recaptcha" data-sitekey="<?= $siteKey ?>"></div>
<input type="submit" name="submit" value="send"/>
</form>
<script src='https://www.google.com/recaptcha/api.js'></script>
</body>
源教程链接
谷歌重新验证码的V2。
步骤1 - 转到谷歌验证码
登录，然后获取站点密钥和密钥
步骤2 - 在此处下载PHP代码并在服务器上上传src文件夹。
步骤3 - 在表单中使用以下代码.php
<head>
<title>FreakyJolly.com Google reCAPTCHA EXAMPLE form</title>
<script src='https://www.google.com/recaptcha/api.js'></script>
</head>
<body>
<?php
require('src/autoload.php');
$siteKey = '6LegPmIUAAAAADLwDmXXXXXXXyZAJVJXXXjN';
$secret = '6LegPmIUAAAAAO3ZTXXXXXXXXJwQ66ngJ7AlP';
$recaptcha = new 'ReCaptcha'ReCaptcha($secret);
$gRecaptchaResponse = $_POST['g-recaptcha-response']; //google captcha post data
$remoteIp = $_SERVER['REMOTE_ADDR']; //to get user's ip
$recaptchaErrors = ''; // blank varible to store error
$resp = $recaptcha->verify($gRecaptchaResponse, $remoteIp); //method to verify captcha
if ($resp->isSuccess()) {
/********
Add code to create User here when form submission is successful
*****/
} else {
/****
// This variable will have error when reCAPTCHA is not entered correctly.
****/
$recaptchaErrors = $resp->getErrorCodes();
}
?>
<form autcomplete="off" class="form-createuser" name="create_user_form" action="" method="post">
<div class="panel periodic-login">
<div class="panel-body text-center">
<div class="form-group form-animate-text" style="margin-top:40px !important;">
<input type="text" autcomplete="off" class="form-text" name="new_user_name" required="">
<span class="bar"></span>
<label>Username</label>
</div>
<div class="form-group form-animate-text" style="margin-top:40px !important;">
<input type="text" autcomplete="off" class="form-text" name="new_phone_number" required="">
<span class="bar"></span>
<label>Phone</label>
</div>
<div class="form-group form-animate-text" style="margin-top:40px !important;">
<input type="password" autcomplete="off" class="form-text" name="new_user_password" required="">
<span class="bar"></span>
<label>Password</label>
</div>
<?php
if(isset($recaptchaErrors[0])){
print('Error in Submitting Form. Please Enter reCAPTCHA AGAIN');
}
?>
<div class="g-recaptcha" data-sitekey="6LegPmIUAAAAADLwDmmVmXXXXXXXXXXXXXXjN"></div>
<input type="submit" class="btn col-md-12" value="Create User">
</div>
</div>
</form>
</body>
</html>
针对@mattgen88的回答，这里是一个排列更好的CURL方法：
//$secret= 'your google captcha private key';
$curl = curl_init();
curl_setopt_array($curl, array(
CURLOPT_URL => "https://www.google.com/recaptcha/api/siteverify",
CURLOPT_HEADER => "Content-Type: application/json",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_SSL_VERIFYPEER => FALSE, // to disable ssl verifiction set to false else true
//CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => array(
'secret' => $secret,
'response' => $_POST['g-recaptcha-response'],
'remoteip' => $_SERVER['REMOTE_ADDR']
)
));
$response = json_decode(curl_exec($curl));
$err = curl_error($curl);
curl_close($curl);
if ($response->success) {
echo 'captcha';
}
else if ($err){
echo $err;
}
else {
echo 'no captcha';
}
检查以下示例
<script src='https://www.google.com/recaptcha/api.js'></script>
<script>
function get_action(form)
{
var v = grecaptcha.getResponse();
if(v.length == 0)
{
document.getElementById('captcha').innerHTML="You can't leave Captcha Code empty";
return false;
}
else
{
document.getElementById('captcha').innerHTML="Captcha completed";
return true;
}
}
</script>
<form autocomplete="off" method="post" action=submit.php">
<input type="text" name="name">
<input type="text" name="email">
<div class="g-recaptcha" id="rcaptcha" data-sitekey="site key"></div>
<span id="captcha" style="color:red" /></span> <!-- this will show captcha errors -->
<input type="submit" id="sbtBrn" value="Submit" name="sbt" class="btn btn-info contactBtn" />
</form>