How to get the current database in thinkphp

ThinkPHP is an open source web application framework based on the PHP language, which is often used to develop enterprise-level applications. In the process of developing applications using ThinkPHP, obtaining the current database operation method is a common requirement. This article will introduce how to use ThinkPHP to obtain the current database operation method.

1. Obtain the current database connection object

Using ThinkPHP to operate the database requires connecting to the database first. You can configure the database connection through the database.php file in the configuration file. The configuration information in the configuration file is as follows:

return [
   // 数据库类型
   'type'            => 'mysql',
   // 服务器地址
   'hostname'        => '127.0.0.1',
   // 数据库名
   'database'        => 'database_name',
   // 用户名
   'username'        => 'root',
   // 密码
   'password'        => '123456',
   // 端口
   'hostport'        => '3306',
   // 数据库编码默认采用utf8
   'charset'         => 'utf8',
   // 数据库表前缀
   'prefix'          => 'tp_',
];

During program execution, you need to obtain the connection object of the current database. You can use the following code to obtain:

// 获取数据库连接对象
$db = Db::connect();

After obtaining the connection object, you can specify the database configuration item name through the first parameter of the connect method to connect to different databases, such as:

// 使用默认配置连接数据库
$db = Db::connect();

// 使用其他配置连接数据库
$db = Db::connect('other_database');

2 , Use the database connection object to obtain the current operation method

After obtaining the database connection object, you can use the getConnection method to obtain the current operation method of the database. The getConnection method returns a PDO object, which contains information such as the current operation method, host name, and user name. You can use the methods provided by the PDO object to obtain specific information.

// 获取数据库连接对象
$db = Db::connect();

// 获取当前操作数据库的方法
$method = $db->getConnection()->getAttribute(PDO::ATTR_DRIVER_NAME);

// 获取主机名
$host = $db->getConnection()->getAttribute(PDO::ATTR_SERVER_INFO);

// 获取用户名
$username = $db->getConnection()->getAttribute(PDO::ATTR_CONNECTION_STATUS);

// 打印输出
var_dump([
    'method' => $method,
    'host' => $host,
    'username' => $username,
]);

Among them, PDO::ATTR_DRIVER_NAME represents the driver name used in the current database operation, such as mysql, sqlite, etc. PDO::ATTR_SERVER_INFO represents the host name and port number of the current database connection. PDO::ATTR_CONNECTION_STATUS represents information such as the current connection user name and process ID.

3. Summary

This article introduces how to use ThinkPHP to obtain the current database operation method. First, you need to obtain the database connection object, and then use the getConnection method to obtain the current method of operating the database, host name, user name and other information. Through the introduction of this article, I believe that readers have mastered the knowledge of how to use ThinkPHP to obtain current database operation methods.

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