How to display all users online?

Question

Yii

I am making a portal, I need to display all users who are currently on the site.
Maybe there are some built-in solutions of the framework?

Answer 1

There is not.
This is done simply.
When you go to the page, you update the time of the last update in the users table. Something like this:

$sql='UPDATE users SET last_update='.time().' where id_user='.Yii::app()->user->id;
Yii::app()->db->createCommand($sql)->execute();

And sampling everything online

$users=Users::model()->findAll([
    'condition'=>'t.last_update > :time',
    'params'=>[':time'=>time()-(60*60*15)], // 15 минут
]);

Answer 2

Or you can write in memcash