问在购物车中添加ckeditor latex代码后销毁codeigniter会话

EN

 <Script>
var option_html=CKEDITOR.instances['option'].getData()
$.post(base_url+"question_bank/questions/add_option",
        {option_html:option_html,is_correct:is_correct}
        ,
         function(data)
          {
             //code
          }
        );
</script>

php code
$data = array(
                       'id'      => uniqid(),
                       'qty'     => 1,
                       'price'   => "1",
                       'name'    => $is_correct,
                        'options' => array('type' => 'question_option',
                                            'option_id'=>'',
                                          'option_html' => $option_html)
                    );

                $this->cart->insert($data);