復制代碼 代碼如下:

< ?php
session_start () ;
if (!isset ( $_SESSION['shili1'] )) { //判斷shili1變量是否配置
$old_id = session_id () ; //原來的會話ID的變量名
session_regenerate_id () ; //獲取一個新的會話ID
$new_id = session_id () ; //新的會話ID的變量名
echo "old : $old_id<br/>" ; //輸出原來的會話ID
echo "new : $new_id<br/>" ; //輸出新的會話ID
$_SESSION['shili1'] = TRUE ; }
?>

復制代碼 代碼如下:

<?php
define ( ‘ua_seed','webapp' ) ;
session_start () ;
if ( !isset($_SESSION['user_agent'] )){
$_SESSION['user_agent'] = md5 ( $_SERVER['HTTP_USER_AGENT'].ua_seed );
}else{
if ($_SESSION['user_agent'] != md5($_SERVER['HTTP_USER_AGENT'].ua_seed)){} }
?>