session
session_start(); //开始使用session
$_SESSION[‘test‘] = time(); //设置一个session
echo "session_id:".session_id(); //显示当前的session_id
echo "<br>";
echo $_SESSION[‘test‘]; //输出session值
unset($_SESSION[‘test‘]); //销毁一个session
echo "<br>";
var_dump($_SESSION);
//session_id:lpd56n5qsmga006v3ss300sgf4
//1518599397
//array(0) {
//}
cookie
setcookie(‘test‘, ‘1‘, 0, ‘/‘); //name, value, expire, path
echo $_COOKIE[‘test‘];
//1
setcookie(‘test‘, ‘‘, time()-1) //删除cookie(删除test的cookie值)
expire [?k?spa??(r)] 失效 （一颗四百二）