What should I do if the new thinkphp controller cannot be used?

ThinkPHP is a PHP framework. It is an open source lightweight PHP development framework. It is released under the Apache2 open source agreement and is a powerful development tool. ThinkPHP has many excellent features, such as modular development, MVC support, template engine, data validation, etc. However, anyone who has used ThinkPHP knows that sometimes the newly created controller cannot be used, which is a headache. So, how do we solve this problem?

1. First determine the location of the controller

In ThinkPHP, the controller class file is generally placed in the controller directory of the application. For example, the application name is home, then The controller directory is /home/Application/Home/Controller/. When you create a new controller, make sure the file name is the same as the class name, and the file suffix is ​​.php.

2. Check whether the definition of the controller class is correct

In ThinkPHP, the definition of the controller class must inherit the base class Controller, for example:

<?php namespace Home\Controller;
use Think\Controller;

class IndexController extends Controller {
    public function index(){
        echo "Hello World!";
    }
}

It should be noted that the first line of the controller class should import the base class Controller. After defining the controller class, you can access the corresponding controller in the browser.

3. Check whether the access path of the controller is correct

In ThinkPHP, the access path of the controller is "http://domain name/application name/controller name/ Method name", for example:

http://localhost/home/index/index

where home is the application name, index is the controller name, and index is the method name. If you have any problems when accessing, you can check whether the access path is correct.

4. Check whether there are controllers with duplicate names

In ThinkPHP, controller names cannot be repeated, otherwise calling errors will occur. Therefore, when creating a new controller, you need to pay attention to whether it has the same name as the controller that comes with the system.

Summary

ThinkPHP is a very excellent PHP framework, but some problems will inevitably occur during use. When you create a new controller and it cannot be used, it may be due to problems with the location, definition, access path, or duplicate name of the controller. If this happens, you can troubleshoot according to the methods mentioned above, I believe it will be of great help to you.

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