Yii CDbConnection failed to open the DB connection: SQLSTATE[28000] [1045] Access denied for user

这时候有一种可能就是端口不正确，可能不是默认的3306

'db'=>array(
            'connectionString' => 'mysql:host=appdb1.xcar.com.cn;port=3308;dbname=gocar',
            'emulatePrepare' => true,
            'username' => 'gcardbmanage',
            'password' => 'L3xH-4G2',
            'charset' => 'utf8',
        ),