我需要保持一个会话存活30分钟,然后销毁它。
当前回答
if (isSet($_SESSION['started'])){
if((mktime() - $_SESSION['started'] - 60*30) > 0){
//Logout, destroy session, etc.
}
}
else {
$_SESSION['started'] = mktime();
}
其他回答
请使用以下代码块在您的包括文件加载在每一页。
$expiry = 1800 ;//session expiry required after 30 mins
if (isset($_SESSION['LAST']) && (time() - $_SESSION['LAST'] > $expiry)) {
session_unset();
session_destroy();
}
$_SESSION['LAST'] = time();
这篇文章展示了控制会话超时的几种方法:http://bytes.com/topic/php/insights/889606-setting-timeout-php-sessions
恕我直言,第二个选择是一个很好的解决方案:
<?php
/***
* Starts a session with a specific timeout and a specific GC probability.
* @param int $timeout The number of seconds until it should time out.
* @param int $probability The probablity, in int percentage, that the garbage
* collection routine will be triggered right now.
* @param strint $cookie_domain The domain path for the cookie.
*/
function session_start_timeout($timeout=5, $probability=100, $cookie_domain='/') {
// Set the max lifetime
ini_set("session.gc_maxlifetime", $timeout);
// Set the session cookie to timout
ini_set("session.cookie_lifetime", $timeout);
// Change the save path. Sessions stored in teh same path
// all share the same lifetime; the lowest lifetime will be
// used for all. Therefore, for this to work, the session
// must be stored in a directory where only sessions sharing
// it's lifetime are. Best to just dynamically create on.
$seperator = strstr(strtoupper(substr(PHP_OS, 0, 3)), "WIN") ? "\\" : "/";
$path = ini_get("session.save_path") . $seperator . "session_" . $timeout . "sec";
if(!file_exists($path)) {
if(!mkdir($path, 600)) {
trigger_error("Failed to create session save path directory '$path'. Check permissions.", E_USER_ERROR);
}
}
ini_set("session.save_path", $path);
// Set the chance to trigger the garbage collection.
ini_set("session.gc_probability", $probability);
ini_set("session.gc_divisor", 100); // Should always be 100
// Start the session!
session_start();
// Renew the time left until this session times out.
// If you skip this, the session will time out based
// on the time when it was created, rather than when
// it was last used.
if(isset($_COOKIE[session_name()])) {
setcookie(session_name(), $_COOKIE[session_name()], time() + $timeout, $cookie_domain);
}
}
使用此课程30分钟
class Session{
public static function init(){
ini_set('session.gc_maxlifetime', 1800) ;
session_start();
}
public static function set($key, $val){
$_SESSION[$key] =$val;
}
public static function get($key){
if(isset($_SESSION[$key])){
return $_SESSION[$key];
} else{
return false;
}
}
public static function checkSession(){
self::init();
if(self::get("adminlogin")==false){
self::destroy();
header("Location:login.php");
}
}
public static function checkLogin(){
self::init();
if(self::get("adminlogin")==true){
header("Location:index.php");
}
}
public static function destroy(){
session_destroy();
header("Location:login.php");
}
}
这是为了在设定的时间后注销用户吗?在注册会话时设置会话创建时间(或过期时间),然后检查每个页面上的加载是否可以处理该时间。
例如:
$_SESSION['example'] = array('foo' => 'bar', 'registered' => time());
// later
if ((time() - $_SESSION['example']['registered']) > (60 * 30)) {
unset($_SESSION['example']);
}
编辑:我有一种感觉,你指的是别的东西。
您可以通过使用会话在一定的生命周期后废弃会话。Gc_maxlifetime ini设置:
编辑: ini_set(’session。gc_maxlifetime’60 * 30);
if (isSet($_SESSION['started'])){
if((mktime() - $_SESSION['started'] - 60*30) > 0){
//Logout, destroy session, etc.
}
}
else {
$_SESSION['started'] = mktime();
}
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