How do I do this in Yii2

Yii 2.0 General Discussions
1

I’m having a time trying to do this. I’ll be honest I’ve never used sessions a lot. But as far as I understand you should be able to do this in PHP (As long as you’ve set the session variable to an array.




$question = $_POST['question'];

$_SESSION['question'][] = $question;

When I do this in Yii2




$question = $_POST['question'];

Yii::$app->session['question'][] = $question;

I get: Indirect modification of overloaded element of yii\web\Session has no effect

What am I doing wrong here. I am trying the save an array of arrays here. My $_POST[‘question’] is array([4] => 7) to represent question number 4 and answer number 7. I plan to save all the question and answer pairs into a single session variable

Anyone who could point me on the right track would be great

2

You can not use the session to modify the array directly beacuse PHPs internal magic with ArrayAccess does not support this.

You have to make it a bit less nice:




$question = $_POST['question'];

Yii::$app->session['question'] = array_merge(Yii::$app->session['question'], [$question]);
3

Thanks Cebe!