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[HTTP & Networking](/categories/http) 4. / 5. enjoys/cors-psr7 ActiveLibrary[HTTP & Networking](/categories/http) enjoys/cors-psr7 ================ Framework agnostic (PSR-7) CORS implementation (www.w3.org/TR/cors/) 1.0.0(1mo ago)01Apache-2.0PHPPHP >=8.0.0 Since Apr 30Pushed 1mo agoCompare [ Source](https://github.com/Enjoyzz/cors-psr7)[ Packagist](https://packagist.org/packages/enjoys/cors-psr7)[ Docs](https://github.com/neomerx/cors-psr7)[ RSS](/packages/enjoys-cors-psr7/feed)WikiDiscussions master Synced 1w ago READMEChangelog (1)Dependencies (7)Versions (2)Used By (0) [![Code Coverage](https://camo.githubusercontent.com/f00bc43b27db5a6e6341d3374060a401be1ed2cdbba1a881394a70c0f211f260/68747470733a2f2f7363727574696e697a65722d63692e636f6d2f672f6e656f6d6572782f636f72732d707372372f6261646765732f636f7665726167652e706e673f623d6d6173746572)](https://scrutinizer-ci.com/g/neomerx/cors-psr7/?branch=master)[![License](https://camo.githubusercontent.com/0ea4e18d96d46a06162aafc485c28efa672db0080b7b7b2ba9b68c0754c45e07/68747470733a2f2f696d672e736869656c64732e696f2f7061636b61676973742f6c2f6e656f6d6572782f636f72732d707372372e737667)](https://packagist.org/packages/neomerx/cors-psr7) Description ----------- [](#description) This package has framework-agnostic [Cross-Origin Resource Sharing](http://www.w3.org/TR/cors/) (CORS) implementation. It is compliant with [PSR-7](http://www.php-fig.org/psr/psr-7/) HTTP message interfaces. Why this package? - Implementation is based on [CORS specification](http://www.w3.org/TR/cors/). - Works with [PSR-7 HTTP message interfaces](http://www.php-fig.org/psr/psr-7/). - Supports debug mode with [PSR-3 Logger Interface](http://www.php-fig.org/psr/psr-3/). - Flexible, modular and extensible solution. - High code quality. **100%** test coverage. - Free software license [Apache 2.0](LICENSE). Sample usage ------------ [](#sample-usage) The package is designed to be used as a middleware. Typical usage ``` use Neomerx\Cors\Analyzer; use Psr\Http\Message\RequestInterface; use Neomerx\Cors\Contracts\AnalysisResultInterface; class CorsMiddleware { /** * Handle an incoming request. * * @param RequestInterface $request * @param Closure $next * * @return mixed */ public function handle(RequestInterface $request, Closure $next) { $cors = Analyzer::instance($this->getCorsSettings())->analyze($request); switch ($cors->getRequestType()) { case AnalysisResultInterface::ERR_NO_HOST_HEADER: case AnalysisResultInterface::ERR_ORIGIN_NOT_ALLOWED: case AnalysisResultInterface::ERR_METHOD_NOT_SUPPORTED: case AnalysisResultInterface::ERR_HEADERS_NOT_SUPPORTED: // return 4XX HTTP error return ...; case AnalysisResultInterface::TYPE_PRE_FLIGHT_REQUEST: $corsHeaders = $cors->getResponseHeaders(); // return 200 HTTP with $corsHeaders return ...; case AnalysisResultInterface::TYPE_REQUEST_OUT_OF_CORS_SCOPE: // call next middleware handler return $next($request); default: // actual CORS request $response = $next($request); $corsHeaders = $cors->getResponseHeaders(); // add CORS headers to Response $response ... return $response; } } } ``` ### Settings [](#settings) Analyzer accepts settings in `Analyzer::instance($settings)` which must implement `AnalysisStrategyInterface`. You can use default implementation `\Neomerx\Cors\Strategies\Settings` to set the analyzer up. For example, ``` use Neomerx\Cors\Strategies\Settings; $settings = (new Settings()) ->setServerOrigin('https', 'api.example.com', 443) ->setPreFlightCacheMaxAge(0) ->setCredentialsSupported() ->setAllowedOrigins(['https://www.example.com', ...]) // or enableAllOriginsAllowed() ->setAllowedMethods(['GET', 'POST', 'DELETE', ...]) // or enableAllMethodsAllowed() ->setAllowedHeaders(['X-Custom-Header', ...]) // or enableAllHeadersAllowed() ->setExposedHeaders(['X-Custom-Header', ...]) ->disableAddAllowedMethodsToPreFlightResponse() ->disableAddAllowedHeadersToPreFlightResponse() ->enableCheckHost(); $cors = Analyzer::instance($settings)->analyze($request); ``` Settings could be cached which improves performance. If you already have settings configured as in the example above you can get internal settings state as ``` /** @var array $dataToCache */ $dataToCache = $settings->getData(); ``` Cached state should be used as ``` $settings = (new Settings())->setData($dataFromCache); $cors = Analyzer::instance($settings)->analyze($request); ``` Install ------- [](#install) ``` composer require neomerx/cors-psr7 ``` Debug Mode ---------- [](#debug-mode) Debug logging will provide a detailed step-by-step description of how requests are handled. In order to activate it a [PSR-3 compatible Logger](http://www.php-fig.org/psr/psr-3/) should be set to `Analyzer`. ``` /** @var \Psr\Log\LoggerInterface $logger */ $logger = ...; $analyzer = Analyzer::instance($settings); $analyzer->setLogger($logger) $cors = $analyzer->analyze($request); ``` Advanced Usage -------------- [](#advanced-usage) There are many possible strategies for handling cross and same origin requests which might and might not depend on data from requests. This built-in strategy `Settings` implements simple settings identical for all requests (same list of allowed origins, same allowed methods for all requests and etc). However you can customize such behaviour. For example you can send different sets of allowed methods depending on request. This might be helpful when you have some kind of Access Control System and wish to differentiate response based on request (for example on its origin). You can either implement `AnalysisStrategyInterface` from scratch or override methods in `Settings` class if only a minor changes are needed to `Settings`. The new strategy could be sent to `Analyzer` constructor or `Analyzer::instance` method could be used for injection. Example ``` class CustomMethodsSettings extends Settings { public function getRequestAllowedMethods(RequestInterface $request): string { // An external Access Control System could be used to determine // which methods are allowed for this request. return ...; } } $cors = Analyzer::instance(new CustomMethodsSettings())->analyze($request); ``` Testing ------- [](#testing) ``` composer test ``` Questions? ---------- [](#questions) Do not hesitate to check [issues](https://github.com/neomerx/cors-psr7/issues) or post a new one. Contributing ------------ [](#contributing) If you have spotted any compliance issues with the [CORS Recommendation](http://www.w3.org/TR/cors/) please post an [issue](https://github.com/neomerx/cors-psr7/issues). Pull requests for documentation and code improvements (PSR-2, tests) are welcome. Versioning ---------- [](#versioning) This package is using [Semantic Versioning](http://semver.org/). License ------- [](#license) Apache License (Version 2.0). Please see [License File](LICENSE) for more information. ### Health Score 36 — LowBetter than 79% of packages Maintenance92 Actively maintained with recent releases Popularity1 Limited adoption so far Community10 Small or concentrated contributor base Maturity38 Early-stage or recently created project Bus Factor1 Top contributor holds 91.5% of commits — single point of failure How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window. **Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores. **Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement. **Maturity (30%)** — Project age, version count, PHP version support, and release stability. ### Release Activity Cadence Unknown Total 1 Last Release 40d ago ### Community Maintainers ![](https://avatars.githubusercontent.com/u/25447823?v=4)[enjoys](/maintainers/enjoys)[@enjoys](https://github.com/enjoys) --- Top Contributors [![neomerx](https://avatars.githubusercontent.com/u/10420662?v=4)](https://github.com/neomerx "neomerx (43 commits)")[![Enjoyzz](https://avatars.githubusercontent.com/u/1448659?v=4)](https://github.com/Enjoyzz "Enjoyzz (2 commits)")[![MrHash](https://avatars.githubusercontent.com/u/390925?v=4)](https://github.com/MrHash "MrHash (1 commits)")[![nikserg](https://avatars.githubusercontent.com/u/5680589?v=4)](https://github.com/nikserg "nikserg (1 commits)") --- Tags psr-7corspsr7neomerxCross-Origin Resource Sharingwww.w3.orgw3.org ### Code Quality TestsPHPUnit Code StylePHP CS Fixer ### Embed Badge ![Health badge](/badges/enjoys-cors-psr7/health.svg) ``` [![Health](https://phpackages.com/badges/enjoys-cors-psr7/health.svg)](https://phpackages.com/packages/enjoys-cors-psr7) ``` ### Alternatives [neomerx/cors-psr7 Framework agnostic (PSR-7) CORS implementation (www.w3.org/TR/cors/) 682.5M22](/packages/neomerx-cors-psr7)[symfony/symfony The Symfony PHP framework 31.4k86.9M2.2k](/packages/symfony-symfony)[guzzlehttp/psr7 PSR-7 message implementation that also provides common utility methods 7.9k1.1B3.7k](/packages/guzzlehttp-psr7)[cakephp/cakephp The CakePHP framework 8.8k19.1M1.7k](/packages/cakephp-cakephp)[tempest/framework The PHP framework that gets out of your way. 2.2k31.1k11](/packages/tempest-framework)[phpro/http-tools HTTP tools for developing more consistent HTTP implementations. 28146.3k](/packages/phpro-http-tools) PHPackages © 2026 [Directory](/)[Categories](/categories)[Trending](/trending)[Changelog](/changelog)[Analyze](/analyze)