关于 php：Google Recaptcha v2 带有电子邮件表单，给出 http 500 错误

Google Recaptcha v2 With email form, gives http 500 Error

对"联系我们"使用 html 表单。这会传递姓名、电子邮件、

这是一个对我有用的答案。我真的要感谢 Galzor，因为他的回答对我帮助很大。我从 Code Geek 获得的基本代码，我在这里添加了一些东西以添加到表单中。这种格式有望消除在 Google"SITE-KEY"和"SECRET-KEY"中确切包含什么内容的混淆，因为它在将它们处理成字符串之前将它们作为变量获取。这些实际上是 40 个字符串。成功的验证码进入登录页面。

这是 HTML send-mail_form.html

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<!DOCTYPE html>
<html>
<head>
<script src="https://www.google.com/recaptcha/api.js" async defer>

</head>

<body>

<form action="send-mail_form.php" method="post">

<span>Name</span>
<input type="text" name="name" value="" placeholder="Your Name" required>

<span>Email</span>
<input type="email" name="web_email" placeholder="[email protected]" required>

<span>Messgae</span>
<textarea name="message" placeholder="message" required></textarea>



<input type="submit" name="submit" value="Send">

</form>

</body>
</html>

这就是所谓的send-mail_form.php。我不会在这里显示thank_you_SO2.html。

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<?php
error_reporting(E_ALL);
ini_set('display_errors', 1);

$web_email;$message;$captcha;
// check form is submitted
if(isset($_POST['web_email']) ){

// get values
$name= $_POST["name"];
$visitor_email= $_POST['web_email'];
$message= $_POST['message'];

//Validate first
if(empty($name)||empty($visitor_email)) {
$error ="Name and email are needed!";
}

if(isset($_POST['g-recaptcha-response'])){
$captcha=$_POST['g-recaptcha-response'];
}

if(!$captcha){
echo 'Please check the the captcha form.';
exit;
}

$secretKey ="SECRET-KEY";
$ip = $_SERVER['REMOTE_ADDR'];
// post request to server
$url = 'https://www.google.com/recaptcha/api/siteverify?secret=' .
urlencode($secretKey) . '&response=' . urlencode($captcha);
$response = file_get_contents($url);
$responseKeys = json_decode($response,true);
// should return JSON with success as true
if($responseKeys["success"]) {
// echo 'Thanks for contacting us';

// mail then
$to ="[email protected]";
$email_subject ="CG Recaptcha Form2 submission";
$email_body ="You have received a new message from".$name.".\
".
"sender's email:\
".$visitor_email."\
".
"Here is the message:\
".$message;

//Send the email!
$mail_check = mail($to,$email_subject,$email_body);
if( $mail_check ){
// echo"all is well. mail sent";
header('Location: thank_you_SO2.html');
}
else {
echo 'You are a spammer ! Go Away';
}
}
}
?>

有一些不必要的项目，顶部的错误检查可能可以删除。谷歌网站验证也将与 https://google.com/recaptcha/api/siteverify?secret=.... 一起使用吗？实际上，在测试时，如果没有 www，它似乎有时会失败，所以最好保留它。

我看到您的代码中有很多错误。试试下面的代码，看看它是否有效，它已经过测试并为我工作。它不是基于您遵循的教程，而是使用 curl 进行验证。

我认为你最大的错误是没有定义 isInfected 函数，=> 代替 -> 并且有时 file_get_contents 不能在所有服务器上工作。

HTML:

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PHP 代码：

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<?php
//check form is submitted
if( isset($_POST['submit']) ){

// get values
$error = '';
$name = $_POST["name"];
$visitor_email = $_POST['web_email'];
$message = $_POST["message"];

//Validate first
if(empty($name)||empty($visitor_email)) {
$error ="Name and email are needed!";
}

//handle captcha response
$captcha = $_REQUEST['g-recaptcha-response'];
$handle = curl_init('https://www.google.com/recaptcha/api/siteverify');
curl_setopt($handle, CURLOPT_POST, true);
curl_setopt($handle, CURLOPT_POSTFIELDS,"secret=YOUR_SECRET_KEY&response=$captcha");
curl_setopt($handle, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($handle);
$explodedArr = explode(",",$response);
$doubleExplodedArr = explode(":",$explodedArr[0]);
$captchaConfirmation = end($doubleExplodedArr);
print_r($doubleExplodedArr);
if ( trim($captchaConfirmation) !="true" ) {
$error ="<p>You are a bot! Go away!</p>";
}

if( empty($error) ){ //no error
// mail than
$to ="[email protected]";
$email_subject ="New Form submission";
$email_body ="You have received a new message from".$name.".\
".
"sender's email:\
".$visitor_email."\
".
"Here is the message:\
".$message;
$headers ="From:".$visitor_email." \
\
";
$headers .="Reply-To:".$visitor_email." \
\
";
//Send the email!
$mail_check = mail($to,$email_subject,$email_body,$headers);
if( $mail_check ){
// echo"all is well. mail sent";
header('Location: thank_you.html');
} else {
echo"mail failed. try again";
}
} else {
echo $error;
}
}
?>