Password hashing

I've read the password_verify(). i can see the example there like this:

Code:

$hash = '$2y$07$BCryptRequires22Chrcte/VlQH0piJtjXl.0t1XkA8pw9dMXTpOq';

if (password_verify('rasmuslerdorf', $hash)) {
   echo 'Password is valid!';
} else {
   echo 'Invalid password.';
}

now I'm trying to login like this code: (but i don't know whats my problem that its not working!)

Code:

$username = $this->input->post('username');
$password = $this->input->post('password');
$password_h = password_hash($this->input->post('password'), PASSWORD_BCRYPT);

$access = $this->user->login_access(array(
    'USER_NAME'     =>    $username,
    'PASSWORD'         =>    password_verify($password, $password_h)
));

and my login_access() is:

Code:

function login_access($cond = array())
{
    return $this->db->get_where($this->tablename, $cond)->result();
}