我有以下迄今为止打开会话(PHP),什么时候会话数据可用?
session_start() ;
foreach($_SESSION as $key => $value){
$alert .= '<br/>' . '['.$key.']='.$value ;
}
$alert .= '<br/>$_SERVER[MY_SERVER...]='.$_SERVER['MY_SERVER_GENERATED'] ;
if($_SESSION['MY_SERVER_GENERATED'] !== true ||
$_SERVER['REMOTE_ADDR'] !== $_SESSION['PREV_REMOTEADDR'] ||
$_SERVER['HTTP_USER_AGENT'] !== $_SESSION['PREV_USERAGENT']){
$alert .= 'session destroyed' ;
session_destroy() ;
}
if(isset($_SESSION['CREATED']) && (strtotime('now') - $_SESSION['CREATED']) > 300){//Delete expired sessions - seconds
$alert .= '<div class="error_box">Your session has expired!</div>' ;
$_SESSION = array() ;
}
session_regenerate_id();
$_SESSION['CREATED'] = strtotime('now') ;
$_SESSION['MY_SERVER_GENERATED'] = true ;
$_SESSION['PREV_USERAGENT'] = $_SERVER['HTTP_USER_AGENT'] ;
$_SESSION['PREV_REMOTEADDR'] = $_SERVER['REMOTE_ADDR'] ;
echo $alert ;
的问题是会话被销毁每次。 $ _SESSION只是空的。在什么时候可以运行上述检查?
糟糕的是,忘记指明我已验证会话正在保存数据,但直到页面启动。所以会话被销毁,因为$ _SESSION数据全为空,因此条件评估为false。作为一个例子,$ alert不会被注册为存储任何内容。
尝试检查您的php.ini中的session_lifetime – Cristian 2011-04-28 16:07:38