WebSVN – php_guestbook – Blame – /trunk/includes/recaptcha/examples/example-captcha.php

Rev	Author	Line No.	Line
2	daniel-mar	1	<?php
		2	/**
		3	* Working sample code to accompany the library. The instructions here assume
		4	* you've just cloned the repo. If you've installed via composer, you will want
		5	* to adjust the path to the autoloader.
		6	*
		7	* 1. Run the server. For example, under Linux you can probably use:
		8	* /usr/bin/php -S "localhost:8000" "examples/example-captcha.php"
		9	* 2. Point your browser at http://localhost:8000
		10	* 3. Follow the instructions
		11	*
		12	* @copyright Copyright (c) 2015, Google Inc.
		13	* @link http://www.google.com/recaptcha
		14	*
		15	* Permission is hereby granted, free of charge, to any person obtaining a copy
		16	* of this software and associated documentation files (the "Software"), to deal
		17	* in the Software without restriction, including without limitation the rights
		18	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
		19	* copies of the Software, and to permit persons to whom the Software is
		20	* furnished to do so, subject to the following conditions:
		21	*
		22	* The above copyright notice and this permission notice shall be included in
		23	* all copies or substantial portions of the Software.
		24	*
		25	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
		26	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
		27	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
		28	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
		29	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
		30	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
		31	* THE SOFTWARE.
		32	*/
		33	// Initiate the autoloader. The file should be generated by Composer.
		34	// You will provide your own autoloader or require the files directly if you did
		35	// not install via Composer.
		36	require_once __DIR__ . '/../vendor/autoload.php';
		37
		38	// Register API keys at https://www.google.com/recaptcha/admin
		39	$siteKey = '';
		40	$secret = '';
		41
		42	// reCAPTCHA supported 40+ languages listed here: https://developers.google.com/recaptcha/docs/language
		43	$lang = 'en';
		44	?>
		45	<html>
		46	<head>
		47	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
		48	<title>reCAPTCHA Example</title>
		49	<link rel="shortcut icon" href="//www.gstatic.com/recaptcha/admin/favicon.ico" type="image/x-icon"/>
		50	<style type="text/css">
		51	body {
		52	margin: 1em 5em 0 5em;
		53	font-family: sans-serif;
		54	}
		55	fieldset {
		56	display: inline;
		57	padding: 1em;
		58	}
		59	</style>
		60	</head>
		61	<body>
		62	<h1>reCAPTCHA Example</h1>
		63	<?php if ($siteKey === '' \|\| $secret === ''): ?>
		64	<h2>Add your keys</h2>
		65	<p>If you do not have keys already then visit <kbd>
		66	<a href = "https://www.google.com/recaptcha/admin">
		67	https://www.google.com/recaptcha/admin</a></kbd> to generate them.
		68	Edit this file and set the respective keys in <kbd>$siteKey</kbd> and
		69	<kbd>$secret</kbd>. Reload the page after this.</p>
		70	<?php
		71	elseif (isset($_POST['g-recaptcha-response'])):
		72	// The POST data here is unfiltered because this is an example.
		73	// In production, always sanitise and validate your input'
		74	?>
		75	<h2><kbd>POST</kbd> data</h2>
		76	<kbd><pre><?php var_export($_POST); ?></pre></kbd>
		77	<?php
		78	// If the form submission includes the "g-captcha-response" field
		79	// Create an instance of the service using your secret
		80	$recaptcha = new \ReCaptcha\ReCaptcha($secret);
		81
		82	// If file_get_contents() is locked down on your PHP installation to disallow
		83	// its use with URLs, then you can use the alternative request method instead.
		84	// This makes use of fsockopen() instead.
		85	// $recaptcha = new \ReCaptcha\ReCaptcha($secret, new \ReCaptcha\RequestMethod\SocketPost());
		86
		87	// Make the call to verify the response and also pass the user's IP address
		88	$resp = $recaptcha->verify($_POST['g-recaptcha-response'], $_SERVER['REMOTE_ADDR']);
		89
		90	if ($resp->isSuccess()):
		91	// If the response is a success, that's it!
		92	?>
		93	<h2>Success!</h2>
		94	<p>That's it. Everything is working. Go integrate this into your real project.</p>
		95	<p><a href="/">Try again</a></p>
		96	<?php
		97	else:
		98	// If it's not successful, then one or more error codes will be returned.
		99	?>
		100	<h2>Something went wrong</h2>
		101	<p>The following error was returned: <?php
		102	foreach ($resp->getErrorCodes() as $code) {
		103	echo '<kbd>' , $code , '</kbd> ';
		104	}
		105	?></p>
		106	<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>.
		107	<p><strong>Note:</strong> Error code <kbd>missing-input-response</kbd> may mean the user just didn't complete the reCAPTCHA.</p>
		108	<p><a href="/">Try again</a></p>
		109	<?php
		110	endif;
		111	else:
		112	// Add the g-recaptcha tag to the form you want to include the reCAPTCHA element
		113	?>
		114	<p>Complete the reCAPTCHA then submit the form.</p>
		115	<form action="/" method="post">
		116	<fieldset>
		117	<legend>An example form</legend>
		118	<p>Example input A: <input type="text" name="ex-a" value="foo"></p>
		119	<p>Example input B: <input type="text" name="ex-b" value="bar"></p>
		120
		121	<div class="g-recaptcha" data-sitekey="<?php echo $siteKey; ?>"></div>
		122	<script type="text/javascript"
		123	src="https://www.google.com/recaptcha/api.js?hl=<?php echo $lang; ?>">
		124	</script>
		125	<p><input type="submit" value="Submit" /></p>
		126	</fieldset>
		127	</form>
		128	<?php endif; ?>
		129	</body>
		130	</html>

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php_guestbook/trunk/includes/recaptcha/examples/example-captcha.php – Rev 2