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recaptcha-v2-checkbox.php
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/
recaptcha-v2-checkbox.php
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<?php
/**
* BSD 3-Clause License
* @copyright (c) 2019, Google Inc.
* @link https://www.google.com/recaptcha
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
require __DIR__ . '/appengine-https.php';
// Initiate the autoloader. The file should be generated by Composer.
// You will provide your own autoloader or require the files directly if you did
// not install via Composer.
require_once __DIR__ . '/../vendor/autoload.php';
// Register API keys at https://www.google.com/recaptcha/admin
$siteKey = '';
$secret = '';
// Copy the config.php.dist file to config.php and update it with your keys to run the examples
if ($siteKey == '' && is_readable(__DIR__ . '/config.php')) {
$config = include __DIR__ . '/config.php';
$siteKey = $config['v2-standard']['site'];
$secret = $config['v2-standard']['secret'];
}
// reCAPTCHA supports 40+ languages listed here: https://developers.google.com/recaptcha/docs/language
$lang = 'en';
?>
<!DOCTYPE html>
<html lang="en">
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,height=device-height,minimum-scale=1">
<link rel="shortcut icon" href="https://www.gstatic.com/recaptcha/admin/favicon.ico" type="image/x-icon"/>
<link rel="canonical" href="https://recaptcha-demo.appspot.com/recaptcha-v2-checkbox.php">
<script type="application/ld+json">{ "@context": "http://schema.org", "@type": "WebSite", "name": "reCAPTCHA demo - \"I'm not a robot\" checkbox", "url": "https://recaptcha-demo.appspot.com/recaptcha-v2-checkbox.php" }</script>
<meta name="description" content="reCAPTCHA demo - "I'm not a robot" checkbox" />
<meta property="og:url" content="https://recaptcha-demo.appspot.com/recaptcha-v2-checkbox.php" />
<meta property="og:type" content="website" />
<meta property="og:title" content="reCAPTCHA demo - "I'm not a robot" checkbox" />
<meta property="og:description" content="reCAPTCHA demo - "I'm not a robot" checkbox" />
<link rel="stylesheet" type="text/css" href="/examples.css">
<title>reCAPTCHA demo - "I'm not a robot" checkbox</title>
<header>
<h1>reCAPTCHA demo</h1><h2>"I'm not a robot" checkbox</h2>
<p><a href="/">↩️ Home</a></p>
</header>
<main>
<?php
if ($siteKey === '' || $secret === ''):
?>
<h2>Add your keys</h2>
<p>If you do not have keys already then visit <kbd> <a href = "https://www.google.com/recaptcha/admin">https://www.google.com/recaptcha/admin</a></kbd> to generate them. Edit this file and set the respective keys in the <kbd>config.php</kbd> file or directly to <kbd>$siteKey</kbd> and <kbd>$secret</kbd>. Reload the page after this.</p>
<?php
elseif (isset($_POST['g-recaptcha-response'])):
// The POST data here is unfiltered because this is an example.
// In production, *always* sanitise and validate your input'
?>
<h2><kbd>POST</kbd> data</h2>
<kbd><pre><?php var_export($_POST);?></pre></kbd>
<?php
// If the form submission includes the "g-captcha-response" field
// Create an instance of the service using your secret
$recaptcha = new \ReCaptcha\ReCaptcha($secret);
// If file_get_contents() is locked down on your PHP installation to disallow
// its use with URLs, then you can use the alternative request method instead.
// This makes use of fsockopen() instead.
// $recaptcha = new \ReCaptcha\ReCaptcha($secret, new \ReCaptcha\RequestMethod\SocketPost());
// Make the call to verify the response and also pass the user's IP address
$resp = $recaptcha->setExpectedHostname($_SERVER['SERVER_NAME'])
->verify($_POST['g-recaptcha-response'], $_SERVER['REMOTE_ADDR']);
if ($resp->isSuccess()):
// If the response is a success, that's it!
?>
<h2>Success!</h2>
<kbd><pre><?php var_export($resp);?></pre></kbd>
<p>That's it. Everything is working. Go integrate this into your real project.</p>
<p><a href="/recaptcha-v2-checkbox.php">⤴️ Try again</a></p>
<?php
else:
// If it's not successful, then one or more error codes will be returned.
?>
<h2>Something went wrong</h2>
<kbd><pre><?php var_export($resp);?></pre></kbd>
<p>Check the error code reference at <kbd><a href="https://developers.google.com/recaptcha/docs/verify#error-code-reference">https://developers.google.com/recaptcha/docs/verify#error-code-reference</a></kbd>.
<p><strong>Note:</strong> Error code <kbd>missing-input-response</kbd> may mean the user just didn't complete the reCAPTCHA.</p>
<p><a href="/recaptcha-v2-checkbox.php">⤴️ Try again</a></p>
<?php
endif;
else:
// Add the g-recaptcha tag to the form you want to include the reCAPTCHA element
?>
<p>Complete the reCAPTCHA then submit the form.</p>
<form action="/recaptcha-v2-checkbox.php" method="post">
<fieldset>
<legend>An example form</legend>
<label class="form-field">Example input A: <input type="text" name="ex-a" value="foo"></label>
<label class="form-field">Example input B: <input type="text" name="ex-b" value="bar"></label>
<!-- Default behaviour looks for the g-recaptcha class with a data-sitekey attribute -->
<div class="g-recaptcha form-field" data-sitekey="<?php echo $siteKey; ?>"></div>
<!-- Submitting before the widget loads will result in a missing-input-response error so you need to verify server side -->
<button class="form-field" type="submit">Submit ↦</button>
</fieldset>
</form>
<script type="text/javascript" src="https://www.google.com/recaptcha/api.js?hl=<?php echo $lang; ?>"></script>
<?php
endif;?>
</main>
<!-- Google Analytics - just ignore this -->
<script async src="https://www.googletagmanager.com/gtag/js?id=UA-123057962-1"></script>
<script>window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);} gtag('js', new Date()); gtag('config', 'UA-123057962-1');</script>