PHP基础知识（四）——Cookie、Session
COOKIE1 设置cookie
setcookie(name, value, expire, path, domain, secure, httponly);
2 读取cookie
if(isset($_COOKIE('username'])) $username = $_COOKIE['username'];
3 删除cookie
setcookie('username', 'Hannah', time() - 2592000, '/');
SESSION
1 开启session
session_start();
2 设置session值
$_SESSION['username'] = 'winstar';
3 读取session值
$username = $_SESSION['username'];
4 销毁session
session_destroy();
5 设置session过期时间
ini_set('session.gc_maxlifetime', 60 * 60 * 24); //设置
echo ini_get('session.gc_maxlifetime'); //读取
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