phpolar/csrf-protection

Provides request checking and response filtering to mitigate CSRF attacks

3.1.6 2025-04-16 04:11 UTC

Requires

• php: >=8.3
• ext-mbstring: *
• php-contrib/response-filter: ^2.0
• phpolar/http-codes: ^0.0.6
• psr/http-message: ^2.0
• psr/http-server-handler: ^1.0
• psr/http-server-middleware: ^1.0

Requires (Dev)

• ext-ast: ^1.1
• ext-openssl: *
• phan/phan: ^5.4
• php-coveralls/php-coveralls: ^2.5
• phpmd/phpmd: ^2.13
• phpolar/csrf-response-filter: ^1.1.2
• phpolar/http-message-test-utils: ^0.2.0
• phpstan/phpstan: ^2.1
• phpunit/phpunit: ^10.0 || ^11.4 || ^12.0
• squizlabs/php_codesniffer: ^3.7

Suggests

• monolog/monolog: Allows for logging forbidden requests
• nyholm/psr7: A fast, simple PSR-7 implementation
• phpolar/csrf-response-filter: Attaches CSRF tokens to PSR-7 HTTP Responses

Provides

• psr/http-middleware-implementation: ^1.0
• psr/http-server-handler-implementation: ^1.0

MIT

• Eric Fortmeyer

• middleware
• csrf
• psr-7
• psr-15
• request handlers

README

Csrf Protection

PSR-7 and PSR-15 based CSRF protection for HTTP requests

Table of Contents

1. Installation
2. Usage
3. Resources
4. API Documentation

Installation

composer require phpolar/csrf-protection

Usage

$csrfChecking = $this->container->get(CsrfRequestCheckMiddleware::class);
$csrfFiltering = $this->container->get(CsrfResponseFilterMiddleware::class);

$app->use($csrfChecking);
$app->use($csrfFiltering);

// ...

$response = $csrfCheckMiddleware->process($request, $nextHandler);

// ...

$preparedResponse = $middleWare->process($request, $routingHandler);

Resources

1. PSR-7
2. PSR-15
3. Example middleware setup

API Documentation

Thresholds

Source Code Size	Memory Usage
4.3 kB	108 kB

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