$password = 'new_password'; $options = ['cost' => 12]; $hashed_password = password_hash($password, PASSWORD_BCRYPT, $options); $user->setPassword($hashed_password);In this example, we first define the password we want to set or change, which is "new_password". We also specify the cost parameter for the bcrypt algorithm, which determines the complexity of the hashing process. Then, we use the "password_hash" function to hash the password using bcrypt with the specified options. Finally, we call the "setPassword" method and pass the hashed password as an argument to change the user's password. This function is part of the PHP Password Hashing Functions library, which is available in PHP 5.5.0 and later versions.