将 reCAPTCHA v2 添加到我的 PHP 文件中
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【中文标题】将 reCAPTCHA v2 添加到我的 PHP 文件中【英文标题】：Adding reCAPTCHA v2 into my PHP file 【发布时间】：2015-06-14 04:14:15 【问题描述】：php 问题已解决。以下是我正在使用的 html 和 PHP 代码：
contact_form.html：
<html>
<head>
<title>My Contact Form</title>
<script src='https://www.google.com/recaptcha/api.js'></script>
</head>
<body>
<div class="contact-form">
<h3>Send me your message</h3>
<form action="app/contact.php" method="POST">
<div class="text-fields">
<span>Full Name *:</span>
<input name="full_name" type="text" class="text" value="Your Name">
</div>
<div class="text-fields">
<span>E-mail *:</span>
<input name="email" type="text" class="text" value="user@domain.com">
</div>
<div class="clearfix"> </div>
</div>
<div class="subject-field">
<span>Subject *:</span>
<input name="subject" type="text" class="text" value="Your Subject">
</div>
<div class="message-field">
<span>Message *:</span>
<textarea name="message"> </textarea>
</div>
<div class="g-recaptcha" data-sitekey="SITE-KEY-HERE"></div>
<input type="submit" value="Send" />
</form>
</div>
</body>
</html>
这是更新后的 PHP。有了这个，我也得到了我想要的 From 字段，即“Sender Name”。
contact_form.php：
<?php
$full_name;$email;$subject;$message;$captcha;
if(isset($_POST['full_name']))
$full_name=$_POST['full_name'];
if(isset($_POST['email']))
$email=$_POST['email'];
if(isset($_POST['subject']))
$subject=$_POST['subject'];
if(isset($_POST['message']))
$message=$_POST['message'];
if(isset($_POST['g-recaptcha-response']))
$captcha=$_POST['g-recaptcha-response'];
if(!$captcha)
echo 'Check the reCAPTCHA box.';
exit;
$response=file_get_contents("https://www.google.com/recaptcha/api/siteverify?secret=SECRET-KEY-HERE&response=".$captcha."&remoteip=".$_SERVER['REMOTE_ADDR']);
if($response.success==false)
echo 'You are a robot!';
else
$to = "me@domain.com";
$from = $full_name . ' <'.$email.'>';
$headers = 'From: ' . $from . "\r\n";
mail ($to, $subject, $message, $headers);
echo 'Your message has been sent!';
?>
感谢大家的帮助。
【问题讨论】：
查看文档：github.com/google/recaptcha#usage 【参考方案1】：试试这个！
<?php
if(isset($_POST['full_name']) && isset($_POST['full_name']) )
$full_name = $_POST['full_name'];
$email = $_POST['email'];
$from_name_email = $full_name . '<'.$email.'>';
if(isset($_POST['subject']))
$subject = $_POST['subject'];
if(isset($_POST['message']))
$message = $_POST['message'];
if(isset($_POST['g-recaptcha-response']))
$captcha=$_POST['g-recaptcha-response'];
$to = "my@email.com";
$subject = "Contact Form";
$headers .= 'From: ' . $from_name_email . "\r\n";
if(!$captcha)
echo 'Please check the the captcha form.';
exit;
$response=file_get_contents("https://www.google.com/recaptcha/api/siteverify?secret=YOUR SECRET KEY GOES HERE&response=".$captcha."&remoteip=".$_SERVER['REMOTE_ADDR']);
if($response.success==false)
echo 'You are spammer!';
else
mail ($to, $subject, $message, $headers);
echo "Your message has been sent! Thank you.";
?>
【讨论】：
这段代码仍然包含无意义的片段$response.success==false。这没有任何意义。
如果 captha 不能正常工作，你就是垃圾邮件发送者？？
不，实际上不会。 $response.success 将字符串“成功”附加到$response；该操作的结果永远不会是错误的。
它会如何正常工作？非常感谢，对我的错误深表歉意
$response['success'] 如果解析为 json 可能会起作用。为什么没有回答？【参考方案2】：
试试这个，它对我有用：
<?php
if(isset($_POST['full_name']) && isset($_POST['full_name']) )
$full_name = $_POST['full_name'];
$email = $_POST['email'];
$from_name_email = $full_name . '<'.$email.'>';
if(isset($_POST['subject']))
$subject = $_POST['subject'];
if(isset($_POST['message']))
$message = $_POST['message'];
if(isset($_POST['g-recaptcha-response']))
$captcha=$_POST['g-recaptcha-response'];
$to = "my@email.com";
$subject = "Contact Form";
$headers .= 'From: ' . $from_name_email . "\r\n";
if(!$captcha)
echo 'Please check the the captcha form.';
exit;
//change is here
$response=file_get_contents("https://www.google.com/recaptcha/api/siteverify?secret=USE PRIVATE KEY HERE&response=".$_POST['g-recaptcha-response'."&remoteip=".$_SERVER['REMOTE_ADDR']);
//change is here
$response = json_decode($response);
//change is here
if($response->success==false)
echo 'You are spammer!';
else
mail ($to, $subject, $message, $headers);
echo "Your message has been sent! Thank you.";
?>
【讨论】：
【参考方案3】：试试：
if(!isset($_POST['g-recaptcha-response']) || empty($_POST['g-recaptcha-response']))
echo 'reCAPTHCA verification failed, please try again.';
else
$secret = 'google_secret_key';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://www.google.com/recaptcha/api/siteverify?secret='.$secret.'&response='.$_POST['g-recaptcha-response']);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
curl_close($ch);
$response = json_decode($response);
if($response->success)
// What happens when the CAPTCHA was entered incorrectly
echo 'Successful .';
else
// Your code here to handle a successful verification
echo 'reCAPTHCA verification failed, please try again.';
【讨论】：
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