Yii - session 数据库存储

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在组件中声明session 组件开启数据库库存储

[
    'components' => [
        'db'      => [
            'class'         => 'yii\db\Connection',
            'dsn'           => 'mysql:host=localhost;dbname=yii',
            'username'      => 'root',
            'password'      => 'xxxxxx',
            'charset'       => 'utf8'
        ],

        'session' => [
            'class' => 'yii\web\DbSession',  //session 操作对象
            'db'    => 'db',     //指定数据库操作组件是上面的组件db
            'sessionTable' => 'yii_session'  //session 数据库表名称
        ]
    ]
]

yii_session 表结构

CREATE TABLE yii_session
(
    id CHAR(40) NOT NULL PRIMARY KEY,
    expire INTEGER,
    data BLOB
)

namespace app\controllers\home;

use Yii;
use yii\web\Controller;

class IndexController
{
    public function actionIndex()
    {
        $session = Yii::$app->session;

        if(isset($session['name']) && isset($session['tel']))
        {
            var_dump($session);
        }else{
            $session['name'] = '谭勇';
            $session['tel']  = 22;

            echo 'set session';
        }
    }
}

测试 http://host/index.php?r=home/index/index