Question

我在print_r（$ _ SESSION）中打印会话，它在数组后面的索引页面中显示。

 Array
(
    [name] => hhh
)

index.php

  <?php 
  session_start();
  $_SESSION['name']='hhh';

我想在任何时候取消设置此变量。所以我在同一目录中创建了一个新的php文件，其中包含以下内容

    <?php

    session_start();
    echo "before destroying the session";
    print_r($_SESSION);
    unset($_SESSION['name']);//remove the name session variable which is available in my index page.
    session_destroy(); //destroy the session
    echo "after destroying the session";
    print_r($_SESSION);

但每当我运行上面的代码时，它会打印以下内容：

before destroying the sessionArray ( ) after destroying the sessionArray ( )

为什么在上面的脚本页面中无法访问索引页面中可用的会话？

提前致谢

Answer 1

我不确定您的目标是什么，这就是您的代码所做的事情：

# You start your session
session_start();

# Echo a string
echo "before destroying the session";

# Print the $_SESSION array, comes out empty because you havn't put anything in the session
print_r($_SESSION);

# You unset the 'name' key in the $_SESSION array, which wasn't even there in the first place
unset($_SESSION['name']);

# You get rid of the session
session_destroy();

# Echo a string
echo "after destroying the session";

# You print $_SESSION variable again, which is going to be empty, because you just destroyed the session.
print_r($_SESSION);

我的观点解释你的代码是，你真的想做什么？

如果您想在多个页面之间使用$ _SESSION，只需在页面之间不要使用session_destroy（），只有当您的用户退出时才会将其销毁。可以这么说和你所有页面上的session_start（）。

Answer 2

您需要在索引文件中启动会话session_start(); $_SESSION['name'] = "test";。

<强>的index.php

include 'index.php';

    echo "before destroying the session";
    print_r($_SESSION);
    unset($_SESSION['name']);//remove the name session variable which is available in my index page.
    session_destroy(); //destroy the session
    echo "after destroying the session";
    print_r($_SESSION);

<强> test.php的

before destroying the sessionArray ( [name] => test ) after destroying the sessionArray ( )

<强>输出

{{1}}

会话变量不可用

2 个答案: