How to use a set of thinkphp source code

With the development of the Internet, website and application development has become one of the areas of greatest concern to many companies and developers. During the development process, using frameworks can improve development efficiency and code maintainability. In the field of PHP, ThinkPHP is a very commonly used framework. This article will introduce how to use a set of ThinkPHP source code for development.

1. Install the source code

Download and unzip the source code, rename the folder to the project name, and put the entire project into the server's PHP application directory, such as in Alibaba Cloud The server should be placed in the /home/wwwroot/project name directory. What needs to be reminded here is that the database.php file in the config directory in the source code needs to be modified according to the actual configuration of the server database to ensure that the project can communicate with the database normally.

2. Introduction to the project directory structure

1. Runtime directory: This directory stores ThinkPHP runtime files, including cache files, log files, compiled files, etc.
2. ThinkPHP directory: This directory is the core file of the ThinkPHP framework, including the running environment check and core function library.
3. Application directory: This directory is the main directory of the application and is where you write your own code. Often, you will create a new application directory of your own, and organize the directories in this directory according to the MVC framework.
4. Public directory: This directory is the public directory of the website, including some public js, img, css, etc., and also includes an index.php entry file. When the server receives any request, this directory should be Requests are passed to this entry file for processing.

3. Write code

According to your own needs, create separate files in the Controller, Model, and View directories under the Application directory. The files in the Controller directory are control files, such as controlling page jumps through URLs; the Model directory is files that interact with the database, such as CRUD (create, read, update, delete) for operating the database, etc.; the View directory The middle is the template file of the page, which is composed of HTML CSS Javascript. The page display is the function of the template. The template passes the data from the controller through the model, realizing the layered architecture of MVC, so that the design can make it easier to maintain the code.

1. Controller code

The controller is the core of the entire application and is used to handle user requests for the application. You can refer to the following code:

namespace Home\Controller;
use Think\Controller;
class IndexController extends Controller {
     public function index(){
         $this->display();
     }
     public function hello(){
         echo 'Hello ThinkPHP!';
     }
 }

In the above code, first use namespace to specify the namespace of the class, here is Home\Controller. Use use Think\Controller to import the Controller class under the namespace, which contains the basic controller methods we need. And IndexController inherits Controller. Two functions index() and hello() are defined below. The index() function is used to display the homepage of the website, and the hello() function outputs Hello ThinkPHP!.

2. Database operation code

ThinkPHP framework provides a wealth of database operation methods, which can be operated using native SQL statements or the ORM that comes with TP. The following is a sample code for operating the database in TP ORM mode:

namespace Home\Model;
use Think\Model;
class UserModel extends Model {
    protected $tableName = 'user';
    protected $tablePrefix = '';
}

In the above code, a UserModel model is defined, and the $tableName attribute specifies the name of the data table for the operation, here is the user table. The $tablePrefix attribute is used to specify the table prefix, which is an empty string here because the project does not use a prefix. Then the CRUD operation can be implemented:

    $User = D('User');
    // 增
    $data['user_name'] = 'thinkphp';
    $User->add($data);
    // 删
    $User->where('id=1')->delete();
    // 改
    $User->where('id=2')->save(array('name'=>'thinkphp'));
    // 查
    $User->select();
    $User->find(2);

In the above code, the User model is first obtained through the D() function, and then the add(), delete(), save() and select() functions can be used to implement additions, deletions and modifications. Check operation, of which the find() function can only check one.

3. View template code

The view template is responsible for rendering the data passed from the controller through the model and displaying it on the page. Here is a simple sample code:

<html>
<head>
<title>Hello</title>
</head>
<body>
<h1>Hello ThinkPHP</h1>
<p><?php echo $username;?></p>
</body>
</html>

In the above code, the template is used to display the Hello ThinkPHP field and the $username passed from the controller.

4. Conclusion

The above is a brief introduction to the ThinkPHP source code and how to use it. Of course, if you want to use ThinkPHP better, it is recommended to study more documents and codes of the framework and understand the framework. Various usage scenarios to better cope with various complex problems that may arise during development.

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