yii operation session

Notes on using session in Yii framework:
First of all, in Yii framework, you don’t need to use session_start() like standard PHP code.
In Yii framework, the autoStart attribute is set to true by default, so,
Although there is no Using session_start(), you can still use the $_SESSION global variable, but it is better to use Yii::app->session:
encapsulated by the Yii framework to set the session variable:
Yii::app()->session[' var']='value';
Use: echo Yii::app()->session['var'];
Remove: unset(Yii::app()->session['var']) ;
For a more complicated use, how to configure your session
The configuration items can be set in the components of protected/config/main.php:
'session'=>array(
'autoStart'=>false(/ true),
'sessionName'=>'Site Access',
'cookieMode'=>'only',
'savePath'='/path/to/new/directory',
),
Keep session in Database settings:
'session' => array (
'class' => 'system.web.CDbHttpSession',
'connectionID' => 'db',
'sessionTableName' => 'actual_table_name',
),
Okay, what else? By the way, for debugging, sometimes you need to know the session ID of the current user,
This value is in Yii::app()->session->sessionID.
The above introduces Yii session operation, including aspects of the content. I hope it will be helpful to friends who are interested in PHP tutorials.