How to define routing in php

PHP is a general-purpose open source scripting language that is widely used in the field of web development. In web development, routing is an indispensable concept. The role of routing is to dispatch user requests to the corresponding controller methods. In PHP, we can define routes in many different ways. This article will introduce several common methods of defining routes.

1. Manually defining routing

Manually defining routing is the most basic routing method in PHP. This method requires us to manually write a routing rule to associate the requested URL with the corresponding controller method. For example, suppose we have a controller called HomeController, which has a method called index. We can manually define a routing rule:

// routes.php
$route['home'] = 'HomeController@index';

The above code tells PHP that if the requested URL is /home, the index of HomeController should be executed method.

The advantage of this method is that it is very simple and intuitive, and we can control the routing rules ourselves. But as applications become more complex, manually defining routes can become difficult to maintain and extend.

2. Auto-matching routing

Auto-matching routing is a relatively advanced routing method. When we use automatch routing, PHP will automatically select the corresponding method based on the requested URL and the naming convention of the controller method. For example, assuming that the URL we request is /article/1, then PHP will automatically find the show method under the ArticleController controller and make the request The parameters of 1 are passed to the show method as parameters.

The advantage of this method is that it can automatically match, saving the time of manually configuring routes. However, it should be noted that automatic matching routing may cause problems for complex URLs because it is matched based on fixed rules.

3. Use routing components provided by the framework

When we use a framework to develop web applications, the framework usually provides routing components to simplify the definition of routes. For example, the Laravel framework provides powerful routing functions. We only need to define routing rules in the routing file, and then we can easily assign the request to the corresponding controller method.

For example, suppose we have a controller called ArticleController, which has a method called index. We can define routing rules in the Laravel framework:

// web.php
Route::get('/articles', 'ArticleController@index');

The above code tells Laravel that if the requested URL is /articles, the ## of ArticleController should be executed #indexMethod.

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