php笔记——cookie和session的学习

Posted 2020-08-30

<?php
//设置cookie
setcookie("username","admin",time()+3600);

//设置cookie数组
setcookie("user[‘id‘]",1,time()+36000);
setcookie("user[‘username‘]","user1",time()+36000);

//读取cookie数据要跳转，为了刷新数据
echo "<script>window.location.href=‘./getcookie.php‘</script>";

//getcookie.php代码，销毁cookie和输出cookie
setcookie("username",‘‘,time()-1);
echo $_COOKIE[‘username‘];
?>

<?php
session_start(); //首先要开启session

$_SESSION[‘username‘] = ‘admin1‘; //设置session
echo $_SESSION[‘username‘]; //输出session的值

//设置session数组
$user = array("id"=>1,"username"=>"user1","sex"=>"男","age"=>20);
$_SESSION[‘user‘] = $user;
echo $_SESSION[‘user‘][‘username‘]; //输出session的值

//销毁session
session_destroy(); //删除服务器中的文件
$_SESSION[‘user‘] = array(); //清空user的session，从内存中释放
unset($_SESSION[‘user‘]); //这个连下标都给释放
?>