如何使用PHP Codeigniter将MySQL数据库中的数字显示为星形

class Database_model extends CI_Model {
    public function getNumericData() {
        $query = $this->db->query("SELECT numeric_column FROM table_name");
        return $query->result_array();
    }
}

class Database_controller extends CI_Controller {
    public function index() {
        $this->load->model('database_model');
        $data['numeric_data'] = $this->database_model->getNumericData();
        $this->load->view('database_view', $data);
    }
}

foreach ($numeric_data as $row) {
    $numeric_value = $row['numeric_column'];
    $star_string = str_repeat('*', $numeric_value);
    echo $star_string;
}