Yii2 how to convert array(string) to array(int)?

Question

MySQL

I make a query to the database

$sql = 'select COUNT(*) from ... // там еще вложенный внутри запрос с группировкой по дате
Yii::$app->db->createCommand($sql)->queryColumn();

The var_dump array value type returns string, although only numbers are returned.
How to get int in array values?
Can I somehow specify in the selection right away or do I need to convert?
In any case, I'm looking for advice, thanks in advance to everyone!

Answer 1

$array = array_map('intval', $array);

Answer 2

php seems to always give strings from the muscle (not sure)
use (int) or intval()
type casting

Answer 3

Well, let's start with the fact that you want to get count (*), where the array was drawn from, I don’t know, maybe sql will give more understanding
This is for extracting 1 scalar value, count is just right =)