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<?php
/**
* Working sample code to accompany the library. The instructions here assume
* you've just cloned the repo. If you've installed via composer, you will want
* to adjust the path to the autoloader.
*
* 1. Run the server. For example, under Linux you can probably use:
* /usr/bin/php -S "localhost:8000" "examples/example-captcha.php"
* 2. Point your browser at http://localhost:8000
* 3. Follow the instructions
*
* @copyright Copyright (c) 2015, Google Inc.
* @link http://www.google.com/recaptcha
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
// 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.
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require_once __DIR__ . '/../vendor/autoload.php';
// Register API keys at https://www.google.com/recaptcha/admin
$siteKey = '';
$secret = '';
// reCAPTCHA supported 40+ languages listed here: https://developers.google.com/recaptcha/docs/language
$lang = 'en';
?>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
<title>reCAPTCHA Example</title>
<link rel="shortcut icon" href="//www.gstatic.com/recaptcha/admin/favicon.ico" type="image/x-icon"/>
<style type="text/css">
body {
margin: 1em 5em 0 5em;
font-family: sans-serif;
}
fieldset {
display: inline;
padding: 1em;
}
</style>
</head>
<body>
<h1>reCAPTCHA Example</h1>
<?php if ($siteKey === '' || $secret === ''): ?>
<h2>Add your keys</h2>
<p>If you do not have keys already then visit <tt>
<a href = "https://www.google.com/recaptcha/admin">
https://www.google.com/recaptcha/admin</a></tt> to generate them.
Edit this file and set the respective keys in <tt>$siteKey</tt> and
<tt>$secret</tt>. Reload the page after this.</p>
<?php
elseif (isset($_POST['g-recaptcha-response'])):
// The POST data here is unfiltered because this is an example.
// In production, *always* sanitise and validate your input'
?>
<h2><tt>POST</tt> data</h2>
<tt><pre><?php var_export($_POST); ?></pre></tt>
<?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 = $recaptcha->verify($_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 successfull, 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> ';
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}
?></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
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="/" method="post">
<fieldset>
<legend>An example form</legend>
<p>Example input A: <input type="text" name="ex-a" value="foo"></p>
<p>Example input B: <input type="text" name="ex-b" value="bar"></p>
<div class="g-recaptcha" data-sitekey="<?php echo $siteKey; ?>"></div>
<script type="text/javascript"
src="https://www.google.com/recaptcha/api.js?hl=<?php echo $lang; ?>">
</script>
<p><input type="submit" value="Submit" /></p>
</fieldset>
</form>
<?php endif; ?>
</body>
</html>