PHP:检测用户语言并能够更改语言

Question

我有一个能够选择语言的网站。我想在用户第一次进入网站时做到这一点，PHP获取他的系统语言并写信给cookie(默认情况下，每次进入时间时，用户默认情况下都有相同的语言(。但是，当用户想更改网站语言时，他将按下一个带有选定语言的按钮(例如俄语(，然后将网站语言设置为俄语，当他再次进入网站时，他将拥有俄罗斯语言。

到目前为止，我有此代码，但确实令人困惑，而且无法正常工作。

html：

<a href="index.php?language=en">
<a href="index.php?language=ru">

php：

<?php
ini_set('display_errors',1);
error_reporting(E_ALL);
$language = substr($_SERVER['HTTP_ACCEPT_LANGUAGE'], 0, 2);
if (empty($_COOKIE['language'])){
setcookie('language', $language);
}
if ( !empty($_GET['language']) ) {
    $_COOKIE['language'] = $_GET['language'] === 'en' ? 'en' : 'ru';
} else {
  switch ($language){
  case "ru":
      $language = 'ru';
      break;
  case "en":
      $language = 'en';
      break;
  default:
      $language = 'en';
      break;
}
}
if ( $_COOKIE['language'] == "en") {
   $language = 'en';
} else {
   $language = 'ru';
}
$xml = simplexml_load_file("language.xml") or die("Equestria forgot languages");
$s_nav_main = $xml->s_nav_main->$language;
$s_nav_more = $xml->s_nav_more->$language;
$s_nav_bot = $xml->s_nav_bot->$language;
$s_nav_partners = $xml->s_nav_partners->$language;
$s_nav_developer = $xml->s_nav_developer->$language;
$s_aboutus = $xml->s_aboutus->$language;
$s_title = $xml->s_title->$language;
$s_head_title = $xml->s_head_title->$language;
$s_head_info = $xml->s_head_info->$language;
$s_statistics_people = $xml->s_statistics_people->$language;
$s_statistics_online = $xml->s_statistics_online->$language;
$s_statistics_messages = $xml->s_statistics_messages->$language;
$s_why_we_best = $xml->s_why_we_best->$language;
$s_why_we_best_content_title = $xml->s_why_we_best_content_title->$language;
$s_why_we_best_content_info = $xml->s_why_we_best_content_info->$language;
$s_why_we_best_adm_title = $xml->s_why_we_best_adm_title->$language;
$s_why_we_best_adm_info = $xml->s_why_we_best_adm_info->$language;
$s_why_we_best_comfort_title = $xml->s_why_we_best_comfort_title->$language;
$s_why_we_best_comfort_info = $xml->s_why_we_best_comfort_info->$language;
$s_why_we_best_wtf_title = $xml->s_why_we_best_wtf_title->$language;
$s_why_we_best_wtf_info = $xml->s_why_we_best_wtf_info->$language;
$s_trusted_title = $xml->s_trusted_title->$language;
$s_trusted_info = $xml->s_trusted_info->$language;
$s_people_celestia = $xml->s_people_celestia->$language;
$s_people_celestia_comment = $xml->s_people_celestia_comment->$language;
$s_people_luna = $xml->s_people_luna->$language;
$s_people_luna_comment = $xml->s_people_luna_comment->$language;
$s_people_twilight = $xml->s_people_twilight->$language;
$s_people_twilight_comment = $xml->s_people_twilight_comment->$language;
$s_botinfo_info = $xml->s_botinfo_info->$language;
$s_botinfo_more = $xml->s_botinfo_more->$language;
?>

Answer 1

您应该寻找用户首选语言的第一个位置是接受语言标题。地理IP查找是危险且昂贵的时间(至少用于确定语言(。除此之外，您还可以设置一个cookie来覆盖浏览器提出的选择，但是围绕欧洲网站有法律影响。

 $avail_lang=array(
            'en'=>1,
            'fr'=>1,
            'de'=>1,
            'ru'=>1
            );
 define("DEFAULT_LANG", 'en');
 ...
 if ($_COOKIE['language'] && isset($avail_lang[$_COOKIE['language']]) {
    $use_lang=$_COOKIE['language'];
 }
 // override with GET if provided
 if ($_GET['language'] && isset($avail_lang[$_GET['language']]) {
    $use_lang=$_GET['language'];
 }
 // no language? check browser
 if (!$use_lang) {
    $request_lang=explode(",", $_SERVER['HTTP_ACCEPT_LANGUAGE']);
    foreach($request_lang as $i) {
            list($lang, $pref)=explode("=", trim($i));
            $pref=$pref ? 0.0+$pref : 1.0;
            list($lang, $country)=explode("-", $lang);
            $pref_lang[$lang]=$pref;
    }
    rsort($pref_lang);
    $use_lang=array_shift(array_intersect_key($pref_lang, $avail_lang));
    if (!$use_lang) $use_lang=DEFAULT_LANGUAGE;
}
if (user_accepts_cookies() && $use_lang!=$_COOKIE['language']) {
    set_lang_cookie($use_lang);
}

Answer 2

可以在此处采用简单的逻辑 -

当用户降落在您的网站上时，您应该跟踪他/她的IP地址，我们可以轻松地使用该IP来获取他们的国家。然后，您可以轻松地为他们使用语言。

Answer 3

找到了方法：

$lang = substr($_SERVER['HTTP_ACCEPT_LANGUAGE'], 0, 2);
if ( !empty($_GET['language']) ) {
    $_COOKIE['language'] = $_GET['language'] === 'en' ? 'en' : 'ru';
} elseif (empty($_COOKIE['language'])) {
    $_COOKIE['language'] = $lang;
}
setcookie('language', $_COOKIE['language']);
if ( $_COOKIE['language'] == "en") {
   $language = 'en';
} else {
   $language = 'ru';
}