在使用yii的yii\db\Connnection时发生错误
<?php
namespace app\controllers;
use yii\web\Controller;
use yii\db\Connection;
use Yii;
class MyController extends Controller
{
public function actionIndex()
{
$country = Yii::$app -> db -> createCommand("select * from country") -> queryAll();
print_r($country);
}
}
<?php
name
