CI框架中cookie的操作方法分析

setcookie("user_id",$user_info['user_id'],86500); 
setcookie("username",$user_info['username'],86500); 
setcookie("password",$user_info['password'],86500); 
//echo $_cookie['username'];

$this->input->set_cookie("username",$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");//适用于控制器 
//echo $this->input->cookie("username");//适用于控制器 
//echo $_cookie['username'];//在模型类中可以通过这种方式获取cookie值 
//echo $_cookie['password'];//在模型类中可以通过这种方式获取cookie值

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");

<?php 
class my_controller extends ci_controller{ 
 
    //构造函数：在构造函数中判断用户是否已经登陆，如果登陆，可进入后台控制器，返回跳转到登陆页面 
    public function __construct(){ 
        parent::__construct(); 
        $this->load->helper("url"); 
        $this->load->model("user_model");//user_model模型类实例化对象 
        $this->cur_user=$this->user_model->is_login();//检测是否登陆，如果登陆，返回登陆用户信息，否则返回false 
        if($this->cur_user === false){ 
            header("location:".site_url("index/login")); 
        }else{ 
            //如果已经登陆，则重新设置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); 
        } 
    } 
} 
?>