1.
将php.ini中的session.gc_maxlifetime设置为9999重启apache;$savePath = "./session_save_dir/";
2.
$savePath = "./session_save_dir/";
$lifeTime = 小时 * 秒;
session_save_path($savePath);
session_set_cookie_params($lifeTime);
session_start();
3.
setcookie() and session_set_cookie_params($lifeTime);