Login_model.php

<?php

class Login_model {
    private $db_table = 'users';
    private $db;

    public function __construct()
    {
        $this->db = new Database;
    }

    public function checkLogin($data)
    {
        $username = htmlspecialchars($data['username']);
        $password = htmlspecialchars($data['password']);

        $query = "SELECT * FROM {$this->db_table} WHERE username = :username";
        $this->db->query($query);
        $this->db->bind('username', $username);

        $row = $this->db->result();

        if (!empty($row)) {
            if (password_verify($password, $row['password'])) {
                $_SESSION['login'] = true;

                if (isset($data['remember'])) {
                    setcookie('id', '12345', strtotime("+30 days"));
                    var_dump($_COOKIE['id']); die;
                }

                header("Location: ". BASEURL ."/mahasiswa");
                exit;
            } else {
                Flasher::setFlash('password anda', 'salah', 'danger');
                header('Location: '. BASEURL .'/login');
                exit;
            }
        } else {
            Flasher::setFlash('username anda', 'salah', 'danger');
            header('Location: '. BASEURL .'/login');
            exit;
        }
    }
}