Codeigniter provides select_min method to get minimum value in mysql table column. Writes a “SELECT MIN(field)” portion for your query. As with select_max(), You can optionally include a second parameter to rename the resulting field.
Let’s create a select_min method in codeigniter
$this->db->select_min('amount'); $result = $this->db->get('tbl_product')->row(); return $result->amount;