php - 根据语言重定向用户

Question

我有以下代码:

<?php
// List of available localized versions as 'lang code' => 'url' map
$sites = array(
    "da" => "http://www.mysite.com/",
);

// Get 2 char lang code
$lang = substr($_SERVER['HTTP_ACCEPT_LANGUAGE'], 0, 2);

// Set default language if a `$lang` version of site is not available
if (!in_array($lang, array_keys($sites)))
    $lang = 'en';

// Finally redirect to desired location
header('Location: ' . $sites[$lang]);
?>

如果它是丹麦网站客户端，这会将用户重定向到该站点的丹麦 (da) 版本，这是主站点。这是极好的。

但是，我想，如果用户不是丹麦语，而是波兰语、德语等，它会将他们重定向到该站点的英文版本，该站点位于子域

http://en.mysite.com/

How do I implement that into the existing code? Thanks in advance!- Frederick Andersen

EDIT

A solution like;

$sites = array(
    "da" => "http://www.mysite.com/",
    "en" => "http://en.mysite.com/"
);

不起作用，因为它在重定向时会产生循环错误 - 至少在 Google Chrome 中是这样。

编辑 2

session_start();
if (isset( $_SESSION['redirect']))
{
   // do nothing / continue with rest of page
}
else
{
   $_SESSION['redirect'] = true;

// List of available localized versions as 'lang code' => 'url' map
$sites = array(
    "da" => "http://www.mysite.com/",
    "en" => "http://en.mysite.com/"
);

// Get 2 char lang code
$lang = substr($_SERVER['HTTP_ACCEPT_LANGUAGE'], 0, 2);

// Set default language if a `$lang` version of site is not available
if (!in_array($lang, array_keys($sites)))
    $lang = 'en';

// Finally redirect to desired location
header('Location: ' . $sites[$lang]);

   exit();
}

Answer 1

您需要将默认选项添加到您的数组:

$sites = array(
    "da" => "http://www.mysite.com/",
    "en" => "http://en.mysite.com/"
);

编辑:如果您在 "http://en.mysite.com/" 中调用相同的代码再次，它将创建一个循环。显而易见的解决方案是不在那里调用此代码，但另一种解决方案是设置一个 session 变量以指示语言选择已经发生。

要添加该 session 变量，您可以执行以下操作:

session_start();
if (isset( $_SESSION['redirect']))
{
   // do nothing / continue with rest of page
}
else
{
   $_SESSION['redirect'] = true;
   // your language selection code with header call
   exit();
}