usarise / turnstile
PHP library for Turnstile, is Cloudflare’s smart CAPTCHA alternative. It can be embedded into any website without sending traffic through Cloudflare and works without showing visitors a CAPTCHA.
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Dependents: 2
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Stars: 16
Watchers: 1
Forks: 1
Open Issues: 1
Requires
- php: ^8.1
- ext-json: *
- psr/http-client: ^1.0
- psr/http-client-implementation: ^1.0
- psr/http-factory: ^1.0
- psr/http-factory-implementation: ^1.0
Requires (Dev)
- ergebnis/composer-normalize: ^2.43.0
- friendsofphp/php-cs-fixer: ^3.59.3
- nyholm/psr7: ^1.8.1
- phpstan/phpstan: ^1.11.7
- phpunit/phpunit: ^10.5.27
- rector/rector: ^1.2.0
- symfony/http-client: ^6.4.9
README
Inspired on recaptcha
Table of contents
- Installation
- Getting started
- Usage
Installation
composer require usarise/turnstile
Getting started
Installation symfony http client and nyholm psr7 and usarise turnstile
composer require symfony/http-client nyholm/psr7 usarise/turnstile
TurnstileExample.php
<?php declare(strict_types=1); require_once __DIR__ . '/vendor/autoload.php'; use Symfony\Component\HttpClient\Psr18Client; use Turnstile\Error\Code; use Turnstile\Turnstile; // Get real API keys at https://dash.cloudflare.com/?to=/:account/turnstile $siteKey = '1x00000000000000000000AA'; // Always passes (Dummy Testing) $secretKey = '1x0000000000000000000000000000000AA'; // Always passes (Dummy Testing) if ($token = $_POST['cf-turnstile-response'] ?? null) { $turnstile = new Turnstile( client: new Psr18Client(), secretKey: $secretKey, ); $response = $turnstile->verify( $token, // The response provided by the Turnstile client-side render on your site. $_SERVER['REMOTE_ADDR'], // With usage CloudFlare: $_SERVER['HTTP_CF_CONNECTING_IP'] ); if ($response->success) { echo 'Success!'; } else { $errors = $response->errorCodes; var_dump($errors); var_dump(Code::toDescription($errors)); } exit; } ?> <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8" /> <title>Turnstile example</title> <script src="https://challenges.cloudflare.com/turnstile/v0/api.js" async defer></script> </head> <body> <form action="" method="POST"> <!-- The following line controls and configures the Turnstile widget. --> <div class="cf-turnstile" data-sitekey="<?php echo $siteKey; ?>" data-theme="light"></div> <!-- end. --> <button type="submit" value="Submit">Verify</button> </form> </body> </html>
Response to string
var_dump((string) $response);
Response to array
var_dump($response->toArray());
Response object to array
var_dump($response->toArray(strict: true));
Usage Turnstile
Construct
use Turnstile\Client\Client; use Turnstile\Turnstile; $turnstile = new Turnstile( client: new Client(...), secretKey: 'secret key', idempotencyKey: 'idempotency key', );
Simplified construct
PSR-18 Clients like php-http/discovery
$turnstile = new Turnstile( client: new Psr18Client(), secretKey: 'secret key', idempotencyKey: 'idempotency key', );
Usage Client
Construct
use Turnstile\Client\Client; use Turnstile\TurnstileInterface; $client = new Client( client: ..., // implementation Psr\Http\Client\ClientInterface requestFactory: ..., // implementation Psr\Http\Message\RequestFactoryInterface (default: requestFactory = client) streamFactory: ..., // implementation Psr\Http\Message\StreamFactoryInterface (default: streamFactory = requestFactory) siteVerifyUrl: TurnstileInterface::SITE_VERIFY_URL, // https://challenges.cloudflare.com/turnstile/v0/siteverify (default) );
Examples http clients
Guzzle http client
Installation
composer require guzzlehttp/guzzle
Usage
use GuzzleHttp\Client as GuzzleHttpClient; use GuzzleHttp\Psr7\HttpFactory; use Turnstile\Client\Client; $client = new Client( new GuzzleHttpClient(), new HttpFactory(), );
Symfony http client and Nyholm PSR-7
Installation symfony http client and nyholm psr7
composer require symfony/http-client nyholm/psr7
Usage
use Symfony\Component\HttpClient\Psr18Client; use Turnstile\Client\Client; $client = new Client( new Psr18Client(), );
Simplified construct
use Symfony\Component\HttpClient\Psr18Client; $client = new Psr18Client();
Symfony http client and Guzzle PSR-7
Installation symfony http client and guzzlehttp psr7
composer require symfony/http-client guzzlehttp/psr7
Usage
use GuzzleHttp\Psr7\HttpFactory; use Symfony\Component\HttpClient\Psr18Client; use Turnstile\Client\Client; $client = new Client( new Psr18Client( responseFactory: new HttpFactory(), ), );
Simplified construct
use GuzzleHttp\Psr7\HttpFactory; use Symfony\Component\HttpClient\Psr18Client; $client = new Psr18Client( responseFactory: new HttpFactory(), );
Symfony http client and Guzzle PSR-7 and Discovery
Installation symfony http client and guzzlehttp psr7 and php http discovery
composer require symfony/http-client guzzlehttp/psr7 php-http/discovery
Usage
use Symfony\Component\HttpClient\Psr18Client; use Turnstile\Client\Client; $client = new Client( new Psr18Client(), );
Simplified construct
use Symfony\Component\HttpClient\Psr18Client; $client = new Psr18Client();
Curl http client and Nyholm PSR-7
Installation nyholm psr7 and php http curl client
composer require nyholm/psr7 php-http/curl-client
Usage
use Http\Client\Curl\Client as CurlClient; use Nyholm\Psr7\Factory\Psr17Factory; use Turnstile\Client\Client; $psr17Factory = new Psr17Factory(); $client = new Client( client: new CurlClient( responseFactory: $psr17Factory, streamFactory: $psr17Factory, ), requestFactory: $psr17Factory, );
Discovery http client
Installation php http discovery
composer require php-http/discovery
Usage
use Http\Discovery\Psr18Client; use Turnstile\Client\Client; $client = new Client( new Psr18Client(), );
Simplified construct
use Http\Discovery\Psr18Client; $client = new Psr18Client();
Usage secret key
The widget’s secret key. The secret key can be found under widget settings in the Cloudflare dashboard under Turnstile.
Real keys
API keys at https://dash.cloudflare.com/?to=/:account/turnstile
Test keys
1x0000000000000000000000000000000AA
Always passes
2x0000000000000000000000000000000AA
Always fails
3x0000000000000000000000000000000AA
Yields a “token already spent” error
Example
use Turnstile\Client\Client; use Turnstile\Turnstile; // Real API keys at https://dash.cloudflare.com/?to=/:account/turnstile $secretKey = '1x0000000000000000000000000000000AA'; $turnstile = new Turnstile( client: $client, secretKey: $secretKey, );
Usage idempotency key
If an application requires to retry failed requests, it must utilize the idempotency functionality.
You can do so by providing a UUID as the idempotencyKey
parameter and then use $turnstile->verify(...)
with the same token the required number of times.
Example with Ramsey UUID
Installation
composer require ramsey/uuid
Usage
use Ramsey\Uuid\Uuid; use Turnstile\Client\Client; use Turnstile\Turnstile; $turnstile = new Turnstile( client: $client, secretKey: $secretKey, // The site’s secret key. idempotencyKey: (string) Uuid::uuid4(), // The UUID to be associated with the response. ); $response = $turnstile->verify( $token, // The response that will be associated with the UUID (idempotencyKey) ); if ($response->success) { // ... } $response = $turnstile->verify( $token, // The response associated with UUID (idempotencyKey) ); if ($response->success) { // ... }
Usage verify
Sample
$response = $turnstile->verify( token: $_POST['cf-turnstile-response'], // The response provided by the Turnstile client-side render on your site. );
Remote IP
The remoteIp
parameter helps to prevent abuse by ensuring the current visitor is the one who received the token.
This is currently not strictly validated.
Basic usage
$response = $turnstile->verify( token: $_POST['cf-turnstile-response'], // The response provided by the Turnstile client-side render on your site. remoteIp: $_SERVER['REMOTE_ADDR'], // The visitor’s IP address. );
With usage CloudFlare
$response = $turnstile->verify( token: $_POST['cf-turnstile-response'], // The response provided by the Turnstile client-side render on your site. remoteIp: $_SERVER['HTTP_CF_CONNECTING_IP'], // The visitor’s IP address. );
Extended
$response = $turnstile->verify( ... challengeTimeout: 300, // Number of allowed seconds after the challenge was solved. expectedHostname: $_SERVER['SERVER_NAME'], // Expected hostname for which the challenge was served. expectedAction: 'login', // Expected customer widget identifier passed to the widget on the client side. expectedCdata: 'sessionid-123456789', // Expected customer data passed to the widget on the client side. );
Usage response
Success status
$response->success
Error codes
$response->errorCodes
Challenge timestamp
$response->challengeTs
Hostname
$response->hostname
Action
$response->action
Customer data
$response->cdata
To string
String with raw json data
(string) $response
To array
Decoded json data
$response->toArray()
Object to array
Array of processed json data based on properties of Response
class:
success
, errorCodes
, challengeTs
, hostname
, action
, cdata
$response->toArray(strict: true)
Usage error codes to description
Convert error codes to a description in a suitable language (default english)
use Turnstile\Error\{Code, Description}; var_dump( Code::toDescription( codes: $response->errorCodes, descriptions: Description::TEXTS, // Default ), );