setcookie("user_id",$user_info['user_id'],86500);  

setcookie("username",$user_info['username'],86500);  

setcookie("password",$user_info['password'],86500);  

//echo $_COOKIE['username'];

第二種設(shè)置cookie的方式：通過CI框架的input類庫設(shè)置cookie的值

復(fù)制代碼代碼如下:

$this->input->set_cookie("username",$user_info['username'],60);  

$this->input->set_cookie("password",$user_info['password'],60);  

$this->input->set_cookie("user_id",$user_info['user_id'],60);  

//echo $this->input->cookie("password");//適用于控制器  

//echo $this->input->cookie("username");//適用于控制器  

//echo $_COOKIE['username'];//在模型類中可以通過這種方式獲取cookie值  

//echo $_COOKIE['password'];//在模型類中可以通過這種方式獲取cookie值

第三種設(shè)置cookie的方式：通過CI框架的cookie_helper.php輔助函數(shù)庫設(shè)置cookie的值

復(fù)制代碼代碼如下:

set_cookie("username",$user_info['username'],60);  

set_cookie("password",$user_info['password'],60);  

set_cookie("user_id",$user_info['user_id'],60);  

//echo get_cookie("username");

例子自定義擴(kuò)展核心控制器類

復(fù)制代碼代碼如下:

<?php  

class MY_Controller extends CI_Controller{  

    //構(gòu)造函數(shù)：在構(gòu)造函數(shù)中判斷用戶是否已經(jīng)登陸，如果登陸，可進(jìn)入后臺(tái)控制器，返回跳轉(zhuǎn)到登陸頁面  

    public function __construct(){  

        parent::__construct();  

        $this->load->helper("url");  

        $this->load->model("user_model");//user_model模型類實(shí)例化對(duì)象  

        $this->cur_user=$this->user_model->is_login();//檢測是否登陸，如果登陸，返回登陸用戶信息，否則返回false  

        if($this->cur_user === false){  

            header("location:".site_url("index/login"));  

        }else{  

            //如果已經(jīng)登陸，則重新設(shè)置cookie的有效期  

            $this->input->set_cookie("username",$this->cur_user['username'],60);  

            $this->input->set_cookie("password",$this->cur_user['password'],00);  

            $this->input->set_cookie("user_id",$this->cur_user['user_id'],60);  

        }  

    }  

}  

?>