Password hashing before save

HI , how can i hash the password before save ?  I use the ci function $model->save()  (without parameter)

Docs:
https://codeigniter.com/user_guide/model...-callbacks

Working example:
https://github.com/lonnieezell/myth-auth...el.php#L12
https://github.com/lonnieezell/myth-auth...hp#L54-L97

You can use password_hash - PASSWORD_BCRYPT. For example, on registration you can send the password to the DB :

PHP Code:

$model->save(
           [
        'admin_name' => $this->request->getVar('admin_name'),
        'admin_email' => $this->request->getVar('admin_email'),
        'admin_password' =>password_hash($this->request->getVar('admin_password'), PASSWORD_BCRYPT)
           ] 


On Login :

First retrieve the password from db. For example keep it under a name "$hashed_one".

Then either receive what the user types :

PHP Code:

$admin_password = $this->request->getVar('admin_password'); 


And (or receive what the user types here) in the final step:  Match them

PHP Code:

if(password_verify($this->request->getVar('admin_password'),$hashed_one)){

            $start_this_session_please =[
            'admin_email' => $admin_email,
            'admin_password' => $admin_password,
         'admin_name' => $admin_name
          ];
      $session = \Config\Services::session();
      $session->set($start_this_session_please);
      return redirect()->to(site_url('/administrator/dashboard'));
etc.