Let's talk about how ThinkPHP accesses the controller

ThinkPHP is a very easy-to-use PHP framework. It provides a convenient MVC model, allowing developers to build Web applications more conveniently. When using ThinkPHP to develop applications, accessing the controller is a very critical link. Let's introduce how ThinkPHP accesses the controller.

First of all, we need to know what the controller does. In the MVC pattern, the controller is responsible for processing user requests and assigning them to the corresponding model layer and view layer. It can be said that the controller is the "hub" of the entire Web application, so access to the controller is very critical.

In ThinkPHP, there are two main ways to access the controller: URL method and function call method.

URL mode:

In URL mode, the URL format for accessing the controller is as follows:

http://yourdomain.com/index.php/module name/control Device name/operation name

Among them, the module name, controller name, and operation name are all optional. If not specified, the "Home" module, "Index" controller, and "index" will be used by default. operate.

For example, if we want to access the index method in the User controller under the Home module, the URL should be like this:

http://yourdomain.com/index.php/Home/User /index

If we want to access the add method in the News controller under the Admin module, the URL should be like this:

http://yourdomain.com/index.php/Admin /News/add

It should be noted that in URL mode, the module name, controller name and operation name in the URL are case-sensitive.

Function calling method:

In the function calling method, we can directly call the controller's method to access the controller. The code implementation of this method is relatively simple. You only need to add the corresponding code to the method. For example:

public function index()
{
    echo 'Hello, World!';
}

In the above code, we define a method named index to output "Hello , World!" this string. We can call this method directly in the following way:

$controller = new IndexController();
$result = $controller->index();

where $controller is an instance of the controller object, and IndexController is the class name of the controller.

It should be noted that in the function calling method, we need to add the suffix "Controller" after the controller class. At the same time, the naming convention of the controller class needs to comply with the ThinkPHP specifications. For details, please refer to the official documentation. .

To sum up, we can easily access the controller through URL and function calling. For developers who master the ThinkPHP framework, access controller is a very basic and important knowledge point. I hope the above content will be helpful to developers.

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