How to retrieve hours for specific dates in CodeIgniter?

When is 2021-05-01 >= 2021-05-31??
You should use 2 where:
First one ‘data >= 2023-05-01’
Second one ‘data <= 2023-05-31’

PHP Code:

$this->db->where('table_data >=', '2021-05-01');
$this->db->where('table_data <=', '2023-05-31');