Router

Routing system based on regular expressions for PHP 8.1+ with native Middleware support

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How to install

composer install corviz/router

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Router facade (singleton)

This is the most common use scenario. That is why we provide a ready-to-use facade.

First, you have to declare you application routes:

use Corviz\Router\Facade\RouterFacade as Router;

/*
 * Application routes
 */
Router::get('/', function() {
    return 'Hello world!';
});

Route::get('/user/(\d+)', function(int $id){
    return "Show information for user $id";
});

Then, execute and output the results.

echo Router::dispatch();
!Router::found() && http_response_code(404);

Note: Router::dispatch() returns the value that was returned by controllers (a string in this example).

Controller classes

If you use classes as controllers, use an array as the second parameter in the route declaration.

Example controller class

namespace MyApplication;

class UserController 
{
    public function show(int $id)
    {
        //Search for user information in the database
        //...
        
        return $user;
    }
}

Route for the controller above.

Router::get('/user/(\d+)', [\MyApplication\User::class, 'show']);

Supported methods

The supported methods for route declarations are: get,post,put,patch,delete,options,head or any

Each represents one HTTP method, except for any, which will attend to all of them

use Corviz\Router\Facade\RouterFacade as Router;

Router::get('/user/(\d+)', function(int $id) { /*...*/ });
Router::post('/user/new', function() { /*...*/ });
Router::delete('/user/(\d+)', function(int $id) { /*...*/ });

Middlewares

Middlewares are responsible for request pre and post processing. We will accept callables or classes that extends Corviz\Router\Middleware as middlewares for your application

use Corviz\Router\Middleware;

class AcceptJsonMiddleware extends Middleware
{
    public function handle(Closure $next): mixed
    {
        //Interrupts in case wrong content-type was sent
        if (!$_SERVER['CONTENT_TYPE'] != 'application/json') {
            return 'Invalid content type';
        }
        
        return $next(); //Proceed with the request
    }
}

To assign a Middleware do as follows:

use Corviz\Router\Facade\RouterFacade as Router;

Router::any( /*...*/ )
    ->middleware(AcceptJsonMiddleware::class);

Or if you want to assign multiple middlewares at once:

use Corviz\Router\Facade\RouterFacade as Router;

Router::any( /*...*/ )
    ->middleware([Middleware1::class, Middleware2::class]);

Grouping

To group multiple routes, you must first use the prefix method, then just use group with a callable carrying those sub-routes. For example:

use Corviz\Router\Facade\RouterFacade as Router;

Router::prefix('user')->group(function() {
    Router::get('list', function() { /**/ });    
    Router::get('(\d+)', function(int $id) { /**/ });    
    Router::post('new', function() { /**/ });    
    Router::patch('(\d+)/update', function(int $id) { /**/ });    
    Router::delete('(\d+)/delete', function(int $id) { /**/ });    
});

This will create the following routes:

• user/list
• user/(\d+)
• user/new
• user/(\d+)/update
• user/(\d+)/delete

Middleware for groups

You can assign middlewares for multiple routes at once by using the middleware method between prefix and group

use Corviz\Router\Facade\RouterFacade as Router;

Router::prefix('api')
    ->middleware(CheckTokenMiddleware::class)
    ->middleware(AcceptJsonMiddleware::class)
    ->group(function() { /* ... */ });

Determine the current path and method manually

The 'dispatch()' method reads 'REQUEST_METHOD' and 'REQUEST_URI' indexes from $_SERVER superglobal to determine which route will be executed.

However, you may want to inform it manually. If so, just feed it as follows:

$method = 'GET'; //or POST, PUT, PATCH, DELETE...
$path = 'users/1/show';

$output = Router::dispatch($method, $path);

Multiple routers

If you have to work with multiple routers for whatever reason, all you have to do is the class Dispatcher, instead of the router facade

use Corviz\Router\Dispatcher;

$router = new Dispatcher();
$router2 = new Dispatcher();
$router3 = new Dispatcher();
//so on...

Then, register and execute the routes as usual:

$router1->get('route1', /* ... */);
$router1->prefix('group1')->group(function() use (&$router1){
    $router1->get('route2', /* ... */);
    $router1->get('route3', /* ... */);
});

echo $router1->dispatch();
!$router1->found() && http_response_code(404);