ThinkPHP6 Database Operation Guide: Add, Delete, Modify and Check

ThinkPHP6 Database Operation Guide: Add, Delete, Modify and Check

Introduction:
In the Web development process, database operation is an essential part. Database is a key tool for storing and managing data, and adding, deleting, modifying, and querying operations on the database is a frequently used function. This article will introduce the basic methods and techniques of using the ThinkPHP6 framework for database operations, and provide code examples for readers' reference.

1. Connect to the database
Before using ThinkPHP6 for database operations, you first need to configure the database connection information. In the .env file in the project root directory, set the relevant configuration of the database, such as database type, host name, user name, password, etc. The sample code is as follows:

DB_TYPE=mysql
DB_HOST=localhost
DB_NAME=test
DB_USER=root
DB_PASSWORD=123456
DB_PORT=3306
DB_CHARSET=utf8

2. Add data
It is very simple to add data using the ThinkPHP6 framework. First, you need to introduce the model class and insert data through the model object. Taking the user table 'user' as an example, the sample code is as follows:

use appmodelUser;

$user = new User;
$user->name = 'Jack';
$user->age = 26;
$user->save();

3. Deleting data
It is also very simple to delete data using the ThinkPHP6 framework. Data can be deleted through the delete method of the model object. Continuing to take the above user table 'user' as an example, the sample code is as follows:

use appmodelUser;

$user = User::find(1);
$user->delete();

4. Modify data
Using the ThinkPHP6 framework to modify data is also very simple. After modifying the data through the model object, call the save method to update the data. Continuing to take the user table 'user' above as an example, the sample code is as follows:

use appmodelUser;

$user = User::find(1);
$user->name = 'Tom';
$user->save();

5. Query data
Using the ThinkPHP6 framework to query data is also very flexible. Various query requirements are implemented through the methods of model objects. The following are some examples of commonly used query methods:

1. Query all data

use appmodelUser;

$users = User::select();

2. Conditional query

use appmodelUser;

$users = User::where('age', '>', 20)->select();

3. Query Single piece of data

use appmodelUser;

$user = User::find(1);

4. Query the data of the specified column

use appmodelUser;

$names = User::column('name');

6. Summary
Through the introduction of this article, readers should be familiar with using the ThinkPHP6 framework for database operations. Have a preliminary understanding. Addition, deletion, modification and query are the most commonly used database operations in development, and the ThinkPHP6 framework provides a simple and convenient method to implement these operations. Whether you are a beginner or someone with some development experience, you can easily get started. I hope this article will be helpful to readers in database operations.

Thinking questions: Think about how to use the ThinkPHP6 framework to perform join table queries and how to perform paging operations.

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