PHP 会话变量未定义 [英] PHP session variable undefined

问题描述

我有这个会话变量，当用户使用此登录时，我试图将其设置为访问级别:

I have this session variable which i am trying to set to an access level when the users logs in with this:

 $accessquery = mysql_query("SELECT roleid FROM person WHERE email = '". $email ."'");
 $access = mysql_fetch_array($accessquery);

 $_SESSION['Access'] = $access;

但是它说访问"未定义，这是什么问题?

However it says that 'Access' is undefined, what is the problem?

编辑*

if (($_SESSION['Access']) == "2")

此处出现错误

编辑*

会话开始已被调用.

推荐答案

这里有两种可能性:

1. 在页面开头使用 session_start(); 启动会话.

2. 使用以下代码:

1. Start the session by using session_start(); at the begining of page.

2. use the following code:

$accessquery = mysqli_query($conn, "SELECT roleid FROM person WHERE email = '". $email ."'", mysqli_store_result($conn));

$access = mysqli_fetch_row($accessquery);

$_SESSION['Access'] = $access[0];

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