php中的会话有问题[关闭]

问题描述：

I have a session code here that i want to redirect the all users if the session username is not equal to administrator..but my code is not working..can anyone know whats the problem? Please

code here:

<?php
session_start();
if(isset($_SESSION['username'])!='administrator'){
header('Location: ../index.php');
}
?>

我在这里有会话代码，如果会话用户名不等于管理员，我想重定向所有用户。但我的代码不能正常工作..谁能知道这个问题是什么？请 p>

代码： p>

 ＆lt;？php 
session_start（）; 
if（isset（$ _ SESSION ['username']  ）！=''管理员'）{
header（'Location：../ index.php'）; 
nnn'n？＆gt; 
  div>  pre> 
  div>

答

The return value of isset will never equal 'administrator'. Try this:

if (!isset($_SESSION['username']) || ($_SESSION['username'] != 'administrator'))

答

isset will only return true or false. If you want to check that it exists AND the value is not "administrator", something like:

<?php
session_start();
if(!empty($_SESSION['username']) && $_SESSION['username'] !='administrator'){
header('Location: ../index.php');
}
?>

php中的会话有问题[关闭]

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