if($variable == 'email')
                {
                    if(!empty($this->email))
                    {

                        if((filter_var($this->email,FILTER_VALIDATE_EMAIL)))
                        {
                             return true;
                        }
                        else
                        $this->erreurs[] = EMAIL_INVALIDE;
                        return false;
                    }
                    else
                    $this->erreurs[] = EMAIL_VIDE;
                    return false;
                }