CAPTCHA 集成到现有的 PHP 表单中

Question

我正在使用 Google Recaptcha，我最终得到了这段代码。我的目标是让我已经在工作的 php 表单仅在验证码完成后提交。任何帮助将不胜感激。

<?php
if (isset($_POST['ContactButton'])) {
    $url = 'https://www.google.com/recaptcha/api/siteverify';
    $privatekey = "6LePayETAAAAANJze7opnV6bQEX-n02p4UdZ8xfF";
    $response = file_get_contents($url . "? 
        secret=" . $privatekey . "&response" . $_POST['g-recaptcha- 
        response'] . "&remoteip=" . $_SERVER['REMOTE_ADDR']);
    $data = json_decode($respose);
    if (isset($data -> success) AND $data -> success == true) {
        $name = $_POST['name'];
        $email = $_POST['email'];
        $phone = $_POST['phone'];
        $message = $_POST['message'];
        $formcontent = " From: $name \n Phone: $phone \n Message: $message";
        $recipient = "magicmacaroni@gmail.com";
        $subject = "Contact Form";
        $mailheader = "From: $email \r\n";
        mail($recipient, $subject, $formcontent, $mailheader) or die("Error!");
        header('Location: contact-thank-you.html');
        exit();
    } else {
        header('location: index.html?captchafail=True');
    }
}
?>

Answer 1

您是否尝试过使用更简单的验证码代替验证码 http://blog.mtstudios.net/the-honey-trap-the-easiest-way-ive-found-to-stop-spam-emails-on-asp-net-contact-forms/

Answer 2

请阅读google's developer documentation for reCAPTCHA 和github page 对您有帮助