class User extends \Illuminate\Database\Eloquent\Model { protected $fillable = ['name', 'email', 'password']; public function beforeSave() { // encrypt the user's password before saving $this->password = bcrypt($this->password); } }In this example, the beforeSave function is being used to encrypt the user's password before saving it to the database. The package library used in this example is the Laravel Eloquent model, which provides a clean and simple interface for working with databases in PHP.