How to run an Active Record object through a loop?

Question

Yii

$alana_first = Alaniatape::find()->where(['category' => "ALANÆ LIFE",'conclusion_top' => '1'])->orderBy('id DESC')->all();

<?php foreach($alana_first as $key => $value){
    echo $key;
    
}?>

Why can't I print $key ?

Answer 1

Firstly, it's not a fact that you received an array and not null, maybe there are no records corresponding to the request.
Secondly, you got an array of objects, if you need a pure array, then you should use asArray()
And finally - just look at what's in the array:

<pre>
<?php print_r($alana_first); ?>
</pre>

Answer 2

Trying to display $key in foreach what do you want to see? Record primary key? To do this, you need to do $value->primaryKey