yii2打开sessionuseyii\web\session; $session = yii::$app->session;// check if a session is already openif($session->isactive) ...// open a session$session->open();// close a session$session->close();// destroys all data registered to a session.$session->destroy();设置session$session = yii::$app->session;$session->set('user_id', '1234');//or$session['user_id'] = '1234';//or$_session['user_id'] = '1234';读取session$session = yii::$app->session;


$user_id = $session->get('user_id');//or$user_id = $session['user_id'];//or$user_id = isset($_session['user_id']) ? $_session['user_id'] : null;销毁session$session = yii::$app->session;$session->remove('user_id');//orunset($session['user_id']);//orunset($_session['user_id']);数组session的读取与设置$session = yii::$app->session;$session['user'] = ['id' => 1, 'username' => 'yiiuser',];echo$session['user']['id'];echo$session['user']['username']; $session['user.id'] = 1;$session['user.username'] = 'yiiuser';


转自：http://www.kuitao8.com/20141213/3351.shtml
以上就介绍了yii2 session的使用方法，包括了方面的内容，希望对php教程有兴趣的朋友有所帮助。