如何使用PHP从$_SERVER['HTTP_ACCEPT_LANGUAGE']获取语言值?

<?php
$language = $_SERVER['HTTP_ACCEPT_LANGUAGE'];
echo $language;
?>

When I use Firefox to test this block of code, I get en-us,en;q=0.7,ja;q=0.3,

当我使用Firefox测试这段代码时，我得到en-us,en;q=0.7,ja;q=0.3，

when I use IE to test the block of code, I get zh-cn.

当我使用IE来测试代码块时，我得到了zhcn。

Is the value of $_SERVER['HTTP_ACCEPT_LANGUAGE'] a string? How to determine whether the preferred language is Chinese or Japanese? How can I write a regular expression to get the language from the value of $_SERVER['HTTP_ACCEPT_LANGUAGE']?

$_SERVER['HTTP_ACCEPT_LANGUAGE']的值是字符串吗?如何确定首选语言是中文还是日语?我如何编写正则表达式来从$_SERVER的值['HTTP_ACCEPT_LANGUAGE']中获取语言?

4 个解决方案

#1

Yes, the value of $_SERVER['HTTP_ACCEPT_LANGUAGE'] is a string -- see $_SERVER.

是的，$_SERVER['HTTP_ACCEPT_LANGUAGE']的值是一个字符串——参见$_SERVER。

Its content is sent by the browser -- which explains why you get different results depending on the browser you are using : most likely, your Firefox is configured to request pages in english (high priority) or japanese (low priority), while your IE is configured to request pages in chinese.

它的内容是由浏览器发送的——这就解释了为什么根据使用的浏览器而得到不同的结果:最可能的情况是，您的Firefox配置为以英语(高优先级)或日语(低优先级)请求页面，而您的IE配置为以中文请求页面。

This is because that HTTP header can contain :

这是因为HTTP头可以包含:

a list of languages
一个语言列表
optionnaly, with region codes
optionnaly,地区代码
with associated priorities.
与相关的优先事项。

The idea being that the server should respond, using the language that suits "the best" what's requested by the user.

其思想是，服务器应该响应，使用适合用户请求的“最佳”语言。

About parsing that header, this blog-post might be a interesting read : Parse Accept-Language to detect a user's language

关于解析这个标题，这个博客文章可能是一个有趣的阅读:解析Accept-Language来检测用户的语言。

There is a portion of code proposed to parse that HTTP header -- and it generates an array that looks like this (quoting) :

有一部分代码建议解析HTTP报头——它生成的数组如下(引用):

Array
(
    [en-ca] => 1
    [en] => 0.8
    [en-us] => 0.6
    [de-de] => 0.4
    [de] => 0.2
)

Which is an array of languages, sorted by priority, in descending order -- which is probably what you want.

这是一个语言数组，按优先级排序，按降序排序——这可能是你想要的。

#2

I just use explode(",",$_SERVER['HTTP_ACCEPT_LANGUAGE']) to get the first possible language that my client might use. It works fine on chrome and IE 10. Not sure if it would be wrong on other browsers.

我只是使用explosion(“，”，$_SERVER['HTTP_ACCEPT_LANGUAGE'])来获得我的客户机可能使用的第一种可能的语言。它在chrome和IE 10上运行良好。不确定在其他浏览器上是否会出错。

#3

As of v5.3 PHP has function for that purpose:

在v5.3中，PHP就有这样的功能:

$locale = locale_accept_from_http($_SERVER['HTTP_ACCEPT_LANGUAGE']);

See: http://php.net/manual/en/locale.acceptfromhttp.php

参见:http://php.net/manual/en/locale.acceptfromhttp.php

#4

try this:

试试这个:

function getUserBaseLanguage() {
    global $_SERVER;
    $accept_languages           = $_SERVER['HTTP_ACCEPT_LANGUAGE'];
    $accept_languages_arr       = explode(",",$accept_languages);
    foreach($accept_languages_arr as $accept_language) {
        preg_match ("/^(([a-zA-Z]+)(-([a-zA-Z]+)){0,1})(;q=([0-9.]+)){0,1}/" , $accept_language, $matches );
        if (!$matches[6]) $matches[6]=1;
        $result[$matches[1]] = array(
            'lng_base'  => $matches[2],
            'lng_ext'   => $matches[4],
            'lng'       => $matches[1],
            'priority'  => $matches[6],
            '_str'      => $accept_language,
        );
    }
    return $result;
}

print_r(getUserBaseLanguage());

output:

输出:

Array
(
[pl] => Array
    (
        [lng_base] => pl
        [lng_ext] => 
        [lng] => pl
        [priority] => 1
        [_str] => pl
    )

[en-US] => Array
    (
        [lng_base] => en
        [lng_ext] => US
        [lng] => en-US
        [priority] => 0.7
        [_str] => en-US;q=0.7
    )

[en] => Array
    (
        [lng_base] => en
        [lng_ext] => 
        [lng] => en
        [priority] => 0.3
        [_str] => en;q=0.3
    )

)

#1