摘要：
$_SESSION 无效请调用 Session_start不调用的话时好时坏. 而且是要在每个使用的页面中都调用.要不就要在 php.ini 中设置 session.auto_start is set to 1--------------------------------------------------注: If you are using cookie-based sessions, you must call session_start() before anything is outputted to the browser.---------------------------- 阅读全文
