How to make a routing on php

Learn how to create dynamic routing on PHP with a simple example.

Routing with PHP

Routing is an essential concept for modern web applications. It allows you to create routes that direct users to different parts of your website. It also enables you to create URLs that are easy to remember and user-friendly. Routing with PHP is quite easy to do. Here's an example of how to create a basic routing system with PHP.

Basic Routing

Routing with PHP starts with the creation of a router object. This router object is responsible for handling requests and returning responses. It also keeps track of the routes you have defined. To create a router object in PHP, use the following code:

$router = new Router();

The next step is to define your routes. This is done using the add() method. Here's an example of how to create a simple route that matches the URL /:

$router->add('/', function() {
    // do something
});

The first argument of the add() method is the route you want to match. The second argument is the callback that will be executed when the route is matched. In this case, we are simply defining an anonymous function. You can also pass a controller class or a closure as the second argument.

You can also match routes with parameters. Here's an example of how to match a route with a parameter:

$router->add('/users/{id}', function($id) {
    // do something with the user id
});

In this example, we are matching a URL with the pattern /users/{id}. The value of the parameter id will be passed to the callback function. You can add as many parameters as you need.

Matching Requests

Once you have defined your routes, you need to match requests. This is done using the match() method. This method takes the URL of the request and returns an array of information about the route. Here's an example of how to match a request:

$route = $router->match($_SERVER['REQUEST_URI']);

if ($route) {
    // do something with the route
} else {
    // no route was matched
}

The match() method returns an array with the following information:

• callback: The callback function or controller class.
• params: An array of parameters.
• method: The HTTP method of the request (GET, POST, etc.).

Once you have the route information, you can execute the callback or controller class. You can also use the parameters to do something with them.

Conclusion

Routing with PHP is quite easy to do. It allows you to create routes that direct users to different parts of your website. It also enables you to create URLs that are easy to remember and user-friendly. With the help of the router object and the add() and match() methods, you can quickly create a routing system for your PHP application.