Yii2数据库完整配置

Yii2.0框架，mysql数据库，一主多从的经典数据库配置。php return [ 'class' => 'yii\db\Connection', 'dsn' => 'mysql:host=1.1.2.3;dbname=db_test', 'username' => 'u_test', 'password' => '123456'

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