php 使用 XAMPP 在本地主机上设置 $_SESSION 不起作用

Setting $_SESSION doesn't work on localhost using XAMPP

提问by Josh Hymanson

I set my session like so in my PHP code : $_SESSION['user_id'] = $login;and this seems to work fine whilst uploaded to my server and carries across different pages, however when I am testing the website on my local machine the session seems to become immediately unset after leaving the script where it is set.

我在我的 PHP 代码中这样设置我的会话：$_SESSION['user_id'] = $login;这似乎在上传到我的服务器并跨不同页面时工作正常，但是当我在本地机器上测试网站时，会话似乎在离开脚本后立即取消设置它在哪里设置。

I am testing on my local machine using XAMPP and exactly the same code.

我正在使用 XAMPP 和完全相同的代码在我的本地机器上进行测试。

I am not sure why this problem is occurring and would greatly appreciate any helpful answer.

我不确定为什么会出现这个问题，非常感谢任何有用的答案。

Example that is not working:

不起作用的示例：

$_SESSION['user_id'] = $login;
echo '<META HTTP-EQUIV="refresh" content="0;URL=../home.php">';  

EDIT 1:

编辑 1：

Here is my entire function in which I log in(it's part of the class):

这是我登录的整个函数（它是课程的一部分）：

public function loggingIn(){
    session_start();

    $db = new Database('localhost','root','','userdata');
    $userFunctions = new Users($db);

    $username = $_POST['usernameInput'];
    $password = $_POST['passwordInput'];

    if(empty($username) || empty($password)){
        $this->errors['u&p'] = 'Please Enter Your Username AND Password';
        $this->printE();
    } elseif($userFunctions->user_exists($username)===false){
        $this->errors['nm'] = 'That Username/Password Combination Is Not Valid';
        $this->printE();
    } else {
            $login = $userFunctions->login($username, $password);

    if($login === false){
            $this->errors['nm'] = 'That Username/Password Combination Is Not Valid';
            echo 'Login Failed!';
        } else  {
           if(!$userFunctions->economyTableExistsForUser($login)){
               $userFunctions->createEconomyTableForUser($login);   
           }
           if(!$userFunctions->schoolTableExistsForUser($login)) {
               $userFunctions->createSchoolTableForUser($login);    
           }

               $_SESSION['user_id'] = $login;

               echo $_SESSION['user_id'];  // working fine

               header('Location: ../home.php');
        }
    }   
}

回答by Ilia Rostovtsev

Let's guess that your home machine is not having:

假设您的家用机器没有：

session.autostart = On

session.autostart = On

in your php.ini, while your other machine obviously is.

在您的php.ini 中，而您的另一台机器显然是。

Make sure that you have set in your PHP code:

确保您已在 PHP 代码中设置：

session_start();

session_start();

PHP: session_start - Manual

PHP: session_start - 手册

If you don't, then your session is not started, unless my first conjecture is true.

如果你不这样做，那么你的会话就不会开始，除非我的第一个猜想是真的。

Besides, you must check for you PHPversion on your localhost and settings in php.ini. Make sure that the directory where you store you session files is writeable and session files do really exist.

此外，您必须检查本地主机上的PHP版本和php.ini 中的设置。确保存储会话文件的目录是可写的，并且会话文件确实存在。

EDIT 1:

编辑 1：

You better use PHP solution for redirection:

您最好使用 PHP 解决方案进行重定向：

header("Location: /");
exit();

EDIT 2:

编辑2：

PHP has functions that modify HTTP headers. Some of them:

PHP 具有修改 HTTP 标头的函数。他们中的一些：

• header
• session_start
• setcookie

• 标题
• 会话开始
• 设置cookie

EDIT 3:

编辑 3：

Line-breaks and spaces could be a problem but there are also invisible character sequences which can cause Warning: Cannot modify header information, like the UTF-8 BOM (Byte-Order-Mark). Try re-saving your file making sure that it's saved just as UTF-8 (no BOM).

换行符和空格可能是一个问题，但也有不可见的字符序列会导致Warning: Cannot modify header information，例如UTF-8 BOM (Byte-Order-Mark)。尝试重新保存您的文件，确保它保存为UTF-8 (no BOM).

EDIT 4:

编辑 4：

To properly debug your code make sure that PHP displays all warning and notices. Run it before session start:

要正确调试您的代码，请确保 PHP 显示所有警告和通知。在会话开始之前运行它：

ini_set('display_errors', -1);

EDIT 5:

编辑 5：

You must also check session.gc_maxlifetimesetting:

您还必须检查session.gc_maxlifetime设置：

session.gc_maxlifetime
session.gc_maxlifetimespecifies the number of seconds after which data will be seen as 'garbage' and cleaned up. Garbage collection occurs during session start.

session.gc_maxlifetime
session.gc_maxlifetime指定数据将被视为“垃圾”并被清理的秒数。垃圾收集发生在会话开始期间。

EDIT 6:

编辑 6：

To view white-spaces in Sublime Text, edit the settings:

要在 Sublime Text 中查看空格，请编辑设置：

// Set to "none" to turn off drawing white space, "selection" to draw only the
// white space within the selection, and "all" to draw all white space
"draw_white_space": "selection",

You can set it in Preferences->Settings Default. If you edit your user settings Preferences->Settings - User and add the line as per below:

您可以在 Preferences->Settings Default 中设置它。如果您编辑用户设置 Preferences->Settings - User 并按以下方式添加行：

{
    "font_size": 10,
    "draw_white_space": "all"
}

Also make sure it shows all other special characters to properly debug your code!

还要确保它显示所有其他特殊字符以正确调试您的代码！

EDIT 7:

编辑 7：

Finally try adding session_write_close();right before redirecting.

最后尝试session_write_close();在重定向之前添加正确。

EDIT 8:

编辑 8：

Set in your PHP file, before session_start();, session.save_path = "/home/username/tmp";directive. Create tmpdir outside of public_html. Make sure that tmpdir has chmod 770and created with the same user/group privileges . Run ls -lsain your home dir to check if the new directory has the same user/groupas other directories, like public_htmlfor instance. If not, make sure changing permissions as root on tmpby running chown username:groupname /home/username/tmp.

在 PHP 文件中设置 before session_start();,session.save_path = "/home/username/tmp";指令。tmp在public_html之外创建目录。确保tmpdir 具有chmod 770并使用相同的用户/组权限创建。ls -lsa在您的主目录中运行以检查新目录是否与其他目录具有相同的用户/组，例如public_html。如果没有，请确保tmp通过运行以 root 身份更改权限chown username:groupname /home/username/tmp。

回答by Steve Alford

A quick update on this. I found this response very useful, however, please note that in my installation of XAMPP, the php.ini entry for session.autostart=On, is slightly different. I found the following:

对此的快速更新。我发现此响应非常有用，但是请注意，在我安装的 XAMPP 中，session.autostart=On 的 php.ini 条目略有不同。我发现了以下内容：

; Initialize session on request startup. ; http://php.net/session.auto-startsession.auto_start=0

; 在请求启动时初始化会话。; http://php.net/session.auto-startsession.auto_start=0

I changed this to:

我把这个改成：

; Initialize session on request startup. ; http://php.net/session.auto-startsession.auto_start=1

; 在请求启动时初始化会话。; http://php.net/session.auto-startsession.auto_start=1

回答by jsHate

Make sure session cookies are enabled in php.ini(xamp\php\php.ini).

确保在php.ini( xamp\php\php.ini)中启用了会话 cookie 。

session.use_cookies=1

回答by LJT

If you are using PHP embedded within .htm/.html documents, you need to ensure that Apache can process them appropriately. This is done by editing the httpd.conf and adding the line

如果您使用嵌入在 .htm/.html 文档中的 PHP，您需要确保 Apache 可以适当地处理它们。这是通过编辑 httpd.conf 并添加行来完成的

AddType application/x-httpd-php .html .htm

to the section <IfModule mime_module>

到部分 <IfModule mime_module>

回答by davidleosam

I was fighting with this problem but solve...

我正在与这个问题作斗争，但解决了......

In your /opt/lampp/etc/php.initry to change this line:

在您/opt/lampp/etc/php.ini尝试更改此行时：

session.save_path = "/var/lib/php/session"

For this:

为了这：

session.save_path = "/opt/lampp/var/session"

Note: Maybe you need to create the folder "session" in /opt/lampp/var

注意：也许您需要在 /opt/lampp/var

回答by Sammitch

In your php.ini check:

在您的 php.ini 检查中：

1. variables_ordercontains the letter S
2. Check that session.save_pathexists and is writeable by the user under which PHP is running.

1. variables_order包含信 S
2. 检查是否session.save_path存在并且可由运行 PHP 的用户写入。

回答by Virendra Kumar

Session Issue Fixed in Xampp 7.1.6 with following Changes in php.ini
Line #1403 set: 
session.auto_start = 1    

回答by justice

Enable session cookies in php.ini (C:\xamp\php\php.ini).

在 php.ini (C:\xamp\php\php.ini) 中启用会话 cookie。

CHANGE

改变

session.use_cookies=0

TO

到

session.use_cookies=1

AND remember to restart xampp

记得重启xampp

回答by Henry

I had similar problems live site working Xampp not.

我在现场工作时遇到了类似的问题 Xampp 没有。

The trick in my case was to disablethe two lines below.

在我的情况下，诀窍是禁用下面的两行。

header('Set-Cookie: same-site-cookie=huis; SameSite=Lax');
header('Set-Cookie: cross-site-cookie=stijl; SameSite=None; Secure');

So check anything that modifies something regarding coockiesis my advise.

因此，检查任何修改有关 coockies 的内容是我的建议。

回答by Bsans Nalibrata

1. Open php.ini
2. change session.auto_start with "1"
3. "Stop"Apache if running
4. "Save"php.ini
5. "Start"Apache

1. 打开 php.ini
2. 更改 session.auto_start "1"
3. "Stop"Apache 如果正在运行
4. ”Save"php.ini
5. "Start"阿帕奇