Yii DataBase MySQL Extension

dev-master / 3.0.x-dev 2023-01-30 22:23 UTC


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Yii DataBase MySQL Extension

Yii Database MySQL Extension is a database extension for the Yii Framework that allows developers to access and interact with MySQL and MariaDb databases. It provides a set of classes and methods for connecting to a MySQL and MariaDb database, executing SQL queries, and managing data within the database. The extension is designed to be easy to use and integrate into Yii-based applications, and supports a wide range of MySQL, MariaDb features and functions. It also includes support for transactions, database schema management, and error handling.

It is used in Yii Framework but can be used separately.

Latest Stable Version Total Downloads rector codecov StyleCI type-coverage

Support version

PHP Mysql/MariaDb CI-Actions
8.0-8.2 5.7-8.0/10.4-10.10 build ansi-mode Mutation testing badge static analysis


The package could be installed via composer:

composer require yiisoft/db-mysql

Config with Yii Framework

The configuration with DI container of Yii Framework.

Also you can use any DI container which implements PSR-11.




use Yiisoft\Db\Connection\ConnectionInterface;
use Yiisoft\Db\Mysql\ConnectionPDO;
use Yiisoft\Db\Mysql\PDODriver;

/** @var array $params */

return [
    ConnectionInterface::class => [
        'class' => ConnectionPDO::class,
        '__construct()' => [
            'driver' => new PDODriver(




use Yiisoft\Db\Mysql\Dsn;

return [
    'yiisoft/db-mysql' => [
        'dsn' => (new Dsn('mysql', '', 'yiitest', '3306', ['charset' => 'utf8mb4']))->asString(),
        'username' => 'user',
        'password' => 'password',

Config without Yii Framework



use Yiisoft\Cache\ArrayCache;
use Yiisoft\Cache\Cache;
use Yiisoft\Db\Cache\SchemaCache;
use Yiisoft\Db\Mysql\ConnectionPDO;
use Yiisoft\Db\Mysql\Dsn;
use Yiisoft\Db\Mysql\PDODriver;

// Or any other PSR-16 cache implementation.
$arrayCache = new ArrayCache();

// Or any other PSR-6 cache implementation.
$cache = new Cache($arrayCache); 
$dsn = (new Dsn('mysql', '', 'yiitest', '3306', ['charset' => 'utf8mb4']))->asString();

// Or any other PDO driver.
$pdoDriver = new PDODriver($dsn, 'user', 'password'); 
$schemaCache = new SchemaCache($cache);
$db = new ConnectionPDO($pdoDriver, $schemaCache);

Unit testing

The package is tested with PHPUnit. To run tests:


Mutation testing

The package tests are checked with Infection mutation framework. To run it:


Static analysis

The code is statically analyzed with Psalm. To run static analysis:



Use Rector to make codebase follow some specific rules or use either newest or any specific version of PHP:


Composer require checker

This package uses composer-require-checker to check if all dependencies are correctly defined in composer.json.

To run the checker, execute the following command:


Support the project

Open Collective

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The Yii DataBase MySQL Extension is free software. It is released under the terms of the BSD License. Please see LICENSE for more information.

Maintained by Yii Software.