Confused about Yii2 session

Yii 2.0 General Discussions
1

With code: var_dump(Yii::$app->session)

It dump an object:


object(yii\web\Session)#109 (6) {

  ["flashParam"]=>

  string(7) "__flash"

  ["handler"]=>

  NULL

  ["_cookieParams":"yii\web\Session":private]=>

  array(1) {

    ["httponly"]=>

    bool(true)

  }

  ["_hasSessionId":"yii\web\Session":private]=>

  NULL

  ["_events":"yii\base\Component":private]=>

  array(0) {

  }

  ["_behaviors":"yii\base\Component":private]=>

  NULL

}

Then I dont understand why var_dump(Yii::$app->session[‘test’]) can get a key ‘test’ value because this is the array usage.

Hope someone can help me out. Thx.

2

Is not array.

This is object of class yii\web\DbSession.

Tray this:




Yii::$app->session->set('test','hello world');

if (Yii::$app->session->has('test'))

{

   echo Yii::$app->session->get('test');

}
3

But why Yii::$app->session[‘test’] will get the value correctly?

And the doc says:


// get a session variable. The following usages are equivalent:

$language = $session->get('language');

$language = $session['language'];
4

It is because Session implements ArrayAccess interface.

http://php.net/manual/en/class.arrayaccess.php

5

GREAT! THX VERY MUCH.