How to insert French characters to MySQL table on CodeIgniter?

I have a simple table (it uses "swedish_latin_ci" collation). I want to insert this string

Digsby est un client multiprotocole de messagerie instantanée qui vous permet de parler avec tous vos amis sur AIM, MSN, Yahoo, ICQ, Google Talk et Jabber avec une liste de contacts simple à gérer.​

When i insert it from normal PHP code, it works well.
But when i insert it by Code Igniter, french characters are replaced by ? automatically.
How to solve this?

 

Before you run your query, you should run this query first:

SET NAMES 'utf8'

Code (markup):