PHP logout问题(Dreamweaver),急！

mikeng

请各位高手帮帮忙。当我logout后，我按browser里的back ;  Session并没有Clear.我的logout Code 如下：谢谢

<?php
if (!isset($_SESSION)) {
  session_start();
}

$logoutAction = $_SERVER['PHP_SELF']."?doLogout=true";
if ((isset($_SERVER['QUERY_STRING'])) && ($_SERVER['QUERY_STRING'] != "")){
  $logoutAction .="&". htmlentities($_SERVER['QUERY_STRING']);
}
if ((isset($_GET['doLogout'])) &&($_GET['doLogout']=="true")){
  $_SESSION['MM_Username'] = NULL;
  $_SESSION['MM_UserGroup'] = NULL;
  $_SESSION['PrevUrl'] = NULL;
  unset($_SESSION['MM_Username']);
  unset($_SESSION['MM_UserGroup']);
  unset($_SESSION['PrevUrl']);

  $logoutGoTo = "index.php";
  if ($logoutGoTo) {
    header("Location: $logoutGoTo");
    exit;
  }
}
?>

suyy10

试一试用其他browser，如IE

mikeng

不能喔！按了logout 后，再按Back,Session 没有destroy!有谁可以教教我

pσtεtσ-ζх

去看看
http://php.about.com/od/advancedphp/ss/php_sessions_3.htm

siemen90

session_destroy();
这比较好用.......

if ((isset($_GET['doLogout'])) &&($_GET['doLogout']=="true")){
  session_destroy();   $logoutGoTo = "index.php";
  if ($logoutGoTo) {
    header("Location: $logoutGoTo");
    exit;
  }
}

这样应该行了吧.....

it.guys.su

应该早就解决了吧 ？

微笑spAghEtti

你根本就没有fire到‘if ((isset($_GET['doLogout'])) &&($_GET['doLogout']=="true")’
这段code