php – CodeIgniter会话set-cookie重复 – 如何解决

我想知道是否有人可以查看我的答案,看看是否有任何漏洞.

在以下位置使用编码和会话时,有一个记录良好的问题：

Duplicated “set-cookie: ci-session” fields in header by codeigniter

总之,每次调用set_userdata时,codeigniter都会执行set-cookie.

我找到了一个部分解决方案：

http://ha17.com/1745-bigip-f5-header-max-size-collides-with-codeigniters-bizarre-session-class/

此解决方案的唯一问题是需要在任何地方插入代码.有没有一种简单的方法来清除所有标题？我已经修改了一些代码来删除php错误,但有没有办法可以使用钩子或其他东西？

<?php
class MY_Controller extends CI_Controller
{

    public function __construct()
    {
        parent:: __construct();
    }

     //See (modified from) http://ha17.com/1745-bigip-f5-header-max-size-collides-with-codeigniters-bizarre-session-class/
    protected function _removeDuplicateCookieHeaders ()
    {
        // clean up all the cookies that are set...
        $headers             = headers_list();
        $cookies_to_output   = array ();
        $header_session_cookie = '';
        $session_cookie_name = $this->config->item('sess_cookie_name');

        foreach ($headers as $header)
        {
            list ($header_type,$data) = explode (':',$header,2);
            $header_type = trim ($header_type);
            $data        = trim ($data);

            if (strtolower ($header_type) == 'set-cookie')
            {
                header_remove ('Set-Cookie'); 

                $cookie_value = current(explode (';',$data));
                list ($key,$val) = explode ('=',$cookie_value);
                $key = trim ($key);

                if ($key == $session_cookie_name)
                {
                   // OVERWRITE IT (yes! do it!)
                   $header_session_cookie = $data;
                   continue;
                } 
                    else 
                    {
                   // Not a session related cookie,add it as normal. Might be a CSRF or some other cookie we are setting
                   $cookies_to_output[] = array ('header_type' => $header_type,'data' => $data);
                }
            }
        }

        if ( ! empty ($header_session_cookie))
        {
            $cookies_to_output[] = array ('header_type' => 'Set-Cookie','data' => $header_session_cookie);
        }

        foreach ($cookies_to_output as $cookie)
        {
            header ("{$cookie['header_type']}: {$cookie['data']}",false);
        }
     }
}