README

Router is a lightweight HTTP resquest router written in PHP.

It will be your perfect companion if you need a simple and effective library or if you want an easy to understand routing library.
Otherwise, take a look at these awesome libraries symfony/routing ou league/route.

Installation

Router can be installed with composer: composer require marceauka/router. For now, it requires PHP 7.4 or 8.0.

Also, copy / paste src/Router.php where you want and require it.

Configure Apache

The router works perfectly with any kind of URL, but if you want some url rewriting, you can use this example .htaccess.

RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^ index.php [L]

Usage

Instanciation

Router as no params.

$router = new Router;

Adding routes

Once you have the instance, adding routes is childish.

// Will respond to : /hello (en GET)
$router->get('hello', function () {
	echo 'Hello world!';
});

Your routes can follow these HTTP verbs: POST, PUT, PATCH and DELETE.

// POST request
$router->post(...);
// PATCH request
$router->patch(...);

A route can use many HTTP verbs:

// GET and POST requests
$router->add(['GET', 'POST'], 'hello', ...);
// ... Or all HTTP verbs
$router->any('hello', ...);

Finally, routes can be chained or added with a callback:

// Chaining
$router->get('foo', ...)->get('bar', ...);
// ...or via a callback
$router->routes(function ($router) {
	// Votre logique
});

If no callback is given to the routes() method, all routes will be returned.

$router->get('hello', ...);

var_dump($router->routes()); // Returns [1 => ['uri' => 'hello', 'action' => '...']]

Listening requests

For everything to work, Router needs to incoming requests:

// Will use REQUEST_URI and REQUEST_METHOD
$router->listen();
// You can spoof them with your own logic (Request library for example).
$router->listing('request', 'method');

Dispatching actions

Obviously, for each route, a need. You need to define an action for each of them.

• A callback :

$router->get('hello', function () {
	echo 'Hello!';
})

• A class (controller, ...) :

$router->get('hello', 'MyClass@myMethod');

Here, the route, once matched, will instanciate the class named "MyClass" and will call the "myMethod" method.
Note: Router will accepts namespaces if you application can autoload them (PSR-4, ...).

$router->get('route-namespace', 'App\Http\Controller@myMethod');

Besides, you can define a global namespace for all of your actions.

// Will call App\Http\Controller\Account@resume()
$router->namespaceWith('App\Http\Controller')->get('mon-account', 'Account@resume');

You can define a not found action when no routes was matched.

$router->whenNotFound(function () {
    echo 'Page not found';
});

URL parameters

Your routes can contains dynamic parameters. Usage is simple.

// Autorise "profile/1" or "profile/12" but not "profile/john".
$router->get('profile/{:num}', ...);

Parameters can be:

• {:num} for a numeric value
• {:alpha} for a alpha value
• {:any} for all kinds of chars
• {:slug} for numbers, alpha, dash (-) and arobase (@)

Once matched, parameters are sent to the corresponding action in the URL defined order.

$router->get('profile/{:num}/{:alpha}', function ($id, $name) {
	echo "My name is $name and my ID is $id !";
});

Named routes

You can give a name to your routes to access them later or easily creating links (in a view for example).

$router->get('/homepage', '...', 'home');
$router->link('home'); // Returns "/homepage"

If your route contains parameters, you can build an URI with filled parameters.
You need to give all parameters expected by the route, otherwise and exception will be rised.

$router->get('/tag/{:slug}', '...', 'tag');
$router->link('tag', 'wordpress'); // => Returns "/tag/wordpress"

$router->get('/user/{:num}/{:any}', '...', 'profile');
$router->link('profile', [42, 'JohnDoe']); // => Returns "/user/42/JohnDoe"

Caching

Sometimes, when our router contains many routes, it's convenient to have a ready-to-use Router instance for each script execution. Router supports serialization and unserialization. Two helpers exists to assists you.

• Export the configured instance:

$compiled = $router->getCompiled(); // Retourns a string

• Import a configured instance:

$router = MarceauKa\Router::fromCompiled($compiled); // Returns the instance previously configured

Note: Routes using a callback can't be serialized. Only the "MyClass@myMethod" is serializable.
The router does not provide functionnality to store or read a cache file. It's not its goal.

Tests

Tests are with PHPUnit 9. You can use the phpunit command given at vendor/bin.

vendor/bin/phpunit

Tests are certainly incomplete. Feel free to contribute.

Licence

MIT