How to automatically redirect URLs in WordPress based on browser language

Manycompanies using WordPress to build foreign trade websiteswill create websites in multiple languages, such as English and Chinese. At the same time, some foreign trade website owners do not want their websites to be accessed by domestic users and want domestic users to be redirected to different URLs. We can use the browser language to determine the user's environment and then automatically redirect to different URLs. The specific method is as follows: Insert the following code into your website theme's header file (header.php)

<?php
// 定义变量 lc
$lc = ""; 
// 检查是否已经设置过 HTTP头Accept-Language信息变量
if(isset($_SERVER['HTTP_ACCEPT_LANGUAGE']))
$lc = substr($_SERVER['HTTP_ACCEPT_LANGUAGE'], 0, 2);
// 这里截取语言编码前两位来判断，如果是中文，转向百度
if($lc == "zh"){
header("location: https://www.baidu.com"); 
exit();
}
?>

Considering many are beginners and may not know how to modify code, it is recommended to install aCode Snippets plugin. After installation, enable the plugin, edit the 'Example JavaScript snippet' snippet, and insert the above code below /* write your JavaScript code here */.Then save to activate and enable the code. In the above code, you can add more languages, such as Brazilian, French, Portuguese, and then redirect to corresponding different URLs. The code for multiple language redirection is as follows:

<?php
$lc = ""; 
if(isset($_SERVER['HTTP_ACCEPT_LANGUAGE']))
$lc = substr($_SERVER['HTTP_ACCEPT_LANGUAGE'], 0, 2);
if($lc == "pt"){
header("location: https://blog.naibabiji.com/"); 
}
else if($lc == "fr"){
header("location: https://blog.naibabiji.com/skill/language-redirection.html"); 
exit();
}
?>

The above method referencesLiaoshen's article. Below are common browser language codes.

af	Afrikaans	sq	Albanian
ar-sa	Arabic (Saudi Arabia)	ar-iq	Arabic (Iraq)
ar-eg	Arabic (Egypt)	ar-ly	Arabic (Libya)
ar-dz	Arabic (Algeria)	ar-ma	Arabic (Morocco)
ar-tn	Arabic (Tunisia)	ar-om	Arabic (Oman)
ar-ye	Arabic (Yemen)	ar-sy	Arabic (Syria)
ar-jo	Arabic (Jordan)	ar-lb	Arabic (Lebanon)
ar-kw	Arabic (Kuwait)	ar-ae	Arabic (United Arab Emirates)
ar-bh	Arabic (Bahrain)	ar-qa	Arabic (Qatar)
eu	Basque	bg	Bulgarian
be	Belarusian	ca	Catalan
zh-tw	Chinese (Taiwan)	zh-cn	Chinese (Simplified, People's Republic of China)
zh-hk	Chinese (Hong Kong SAR)	zh-sg	Chinese (Singapore)
hr	Croatian	cs	Czech
da	Danish	nl	Dutch (Standard)
nl-be	Dutch (Belgium)	en	English
en-us	English (United States)	en-gb	English (United Kingdom)
en-au	English (Australia)	en-ca	English (Canada)
en-nz	English (New Zealand)	en-ie	English (Ireland)
en-za	English (South Africa)	en-jm	English (Jamaica)
en	English (Caribbean)	en-bz	English (Belize)
en-tt	English (Trinidad and Tobago)	et	Estonian
fo	Faroese	fa	Persian
fi	Finnish	fr	French (Standard)
fr-be	French (Belgium)	fr-ca	French (Canada)
fr-ch	French (Switzerland)	fr-lu	French (Luxembourg)
gd	Gaelic (Scottish)	ga	Irish
de	German (Standard)	de-ch	German (Switzerland)
de-at	German (Austria)	de-lu	German (Luxembourg)
de-li	German (Liechtenstein)	el	Greek
he	Hebrew	hi	Hindi
hu	Hungarian	is	Icelandic
id	Indonesian	it	Italian (Standard)
it-ch	Italian (Switzerland)	ja	Japanese
ko	Korean	ko	Korean (한국어)
lv	Latvian	lt	Lithuanian
mk	Macedonian (Former Yugoslav Republic of Macedonia)	ms	Malay
mt	Maltese	no	Norwegian (Bokmål)
no	Norwegian (Nynorsk)	pl	Polish
pt-br	Portuguese (Brazil)	pt	Portuguese (Portugal)
rm	Romansh	ro	Romanian
ro-mo	Romanian (Republic of Moldova)	ru	Russian
ru-mo	Russia (Republic of Moldova)	sz	Sami (Lappish)
sr	Serbian (Cyrillic)	sr	Serbian (Latin)
sk	Slovak	sl	Slovenian
sb	Sorbian	es	Spanish (Spain)
es-mx	Spanish (Mexico)	es-gt	Spanish (Guatemala)
es-cr	Spanish (Costa Rica)	es-pa	Spanish (Panama)
es-do	Spanish (Dominican Republic)	es-ve	Spanish (Venezuela)
es-co	Spanish (Colombia)	es-pe	Spanish (Peru)
es-ar	Spanish (Argentina)	es-ec	Spanish (Ecuador)
es-cl	Spanish (Chile)	es-uy	Spanish (Uruguay)
es-py	Spanish (Paraguay)	es-bo	Spanish (Bolivia)
es-sv	Spanish (El Salvador)	es-hn	Spanish (Honduras)
es-ni	Spanish (Nicaragua)	es-pr	Spanish (Puerto Rico)
sx	Sutu	sv	Swedish
sv-fi	Swedish (Finland)	th	Thai
ts	Tsonga	tn	Setswana
tr	Turkish	uk	Ukrainian
ur	Urdu	ve	Venda
vi	Vietnamese	xh	Xhosa
ji	Yiddish	zu	Zulu

Multiple language detection is implemented using PHP - if...elseif....else statements.

if (条件)
{
    if 条件成立时执行的代码;
}
elseif (条件)
{
    elseif 条件成立时执行的代码;
}
else
{
    条件不成立时执行的代码;
}

In addition to the method above, you can also insert the following code to achieve redirection for different languages.

<?php
$lan = substr( $HTTP_ACCEPT_LANGUAGE,0,5);
if ($lan == "zh-cn")
print("<meta http-equiv='refresh' content = '0;URL = gb/index.htm'>");
else
print("<meta http-equiv='refresh' content = '0;URL = eng/index.htm'>");

If you are using a translation plugin to create a multilingual website, the plugin settings usually include an option to enable redirection directly. Besides modifying code, you can also use domain name resolution or direct IP address targeting for redirection; some advanced DNS service providers support this feature.Other related articles previously written:

• WordPress Plugin for Redirecting Visitors from Different Countries to Different Pages: IP2Location Redirection
• Plugin for Restricting Website Access by Region: iQ Block Country