PHP code example of yiisoft / csrf

1. Go to this page and download the library: Download yiisoft/csrf library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php.

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

yiisoft / csrf example snippets


return [
    Yiisoft\Yii\Http\Application::class => [
        '__construct()' => [
            'dispatcher' => DynamicReference::to(static function (Injector $injector) {
                return ($injector->make(MiddlewareDispatcher::class))
                    ->withMiddlewares(
                        [
                            ErrorCatcher::class,
                            SessionMiddleware::class,
                            CsrfMiddleware::class, // <-- add this
                            Router::class,
                        ]
                    );
            }),
        ],
    ],
];


/** @var Yiisoft\Csrf\CsrfTokenInterface $csrfToken */
$csrf = $csrfToken->getValue();


use Psr\Http\Message\ResponseFactoryInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Server\RequestHandlerInterface;
use Yiisoft\Csrf\CsrfMiddleware;

/**
 * @var Psr\Http\Message\ResponseFactoryInterface $responseFactory
 * @var Yiisoft\Csrf\CsrfTokenInterface $csrfToken
 */
 
$failureHandler = new class ($responseFactory) implements RequestHandlerInterface {
    private ResponseFactoryInterface $responseFactory;
    
    public function __construct(ResponseFactoryInterface $responseFactory)
    {
        $this->responseFactory = $responseFactory;
    }

    public function handle(ServerRequestInterface $request): ResponseInterface
    {
        $response = $this->responseFactory->createResponse(400);
        $response
            ->getBody()
            ->write('Bad request.');
        return $response;
    }
};

$middleware = new CsrfMiddleware($responseFactory, $csrfToken, $failureHandler);