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--- tips:browserlanguagedetection [2009-05-03 09:35] – 123.255.41.127
+++ tips:browserlanguagedetection [2018-04-24 01:41] (current) – Dr-Yukon
@@ Line 1: / Line 1: @@
 ====== Browser Language Detection ======
+:!: OBSOLETE
 To have the Wiki language being select based on available languages set on user's browser, perform these actions:
@@ Line 10: / Line 13: @@
 with
 <code php>
-// $conf['lang']        = 'en';              //your language
+$conf['lang']        = 'en';              //your language
 $conf['lang_default'] = 'pt'; // default language
 $conf['lang_enabled'] = array('pt', 'es', 'de', 'en');
@@ Line 60: / Line 63: @@
 </code>
 ----
-Edit **inc/parser.php**, and replace
+Edit **inc/parser.php**, **doku.php** and **media.php** /this file is obsolete now/ in the same way, and replace
 <code php>
 require_once("lang/en/lang.php");
@@ Line 74: / Line 77: @@
 </code>
 ----
-Edit **doku.php**, and replace
+Edit **conf/dokuwiki.php** again, and comment %%$conf['lang']%% line:
 <code php>
-  require_once("lang/en/lang.php");
+// $conf['lang']        = 'en';              //your language
-  require_once("lang/".$conf['lang']."/lang.php");
 </code>
-with
-<code php>
-  require_once("lang/en/lang.php");
-  // DWD Modify -> Add: Set Language from Browser Language Settings.
-  $conf['lang'] = detect_browser_language();
-  // DWD Modify End.
-  require_once("lang/".$conf['lang']."/lang.php");
-</code>
-----
-Edit **media.php**, and replace
-<code php>
-require_once("lang/en/lang.php");
-require_once("lang/".$conf['lang']."/lang.php");
-</code>
-with
-<code php>
-require_once("lang/en/lang.php");
-// DWD Modify -> Add: Set Language from Browser Language Settings.
-$conf['lang'] = detect_browser_language();
-// DWD Modify End.
-require_once("lang/".$conf['lang']."/lang.php");
-</code>
+==== Discussion ====
-===== Discussion =====
 I prefer this new function rather than the old one because it is more precise in parsing the browser acceptable languages and because it either returns a language found by match or the default language. Although it seems the former code was also fixed to return the same results. It also doesn't convert the HTTP_ACCEPT_LANGUAGE to lowercase, which I didn't see as necessary. -- 2004.11.03.
@@ Line 303: / Line 280: @@
 ----
+The **Here is another one** approach worked for me. Filenames have changed and you have to edit them this way:
+  * instead of //in /conf/local.conf.protected// put the code in // /conf/local.protected.php //, this will prevent modifications by the configuration manager. Create the file if it doesn't exist.
+  * :!: **problem 1 [solved]** :!: the default language option is removed from the local.php after saving configuration. \\my workaround was to put the default language in the **lang.protected.php** file. Here's my /conf/local.protected.php:
+<file php>
+<?php
+//added for language support
+$conf['lang'] = 'it';
+if (isset($_GET['plang'])){
+	$conf['lang']=$_GET['plang'];
+	setcookie("plang",$_GET['plang']);
+	$getrid="plang=".$_GET['plang']; 	//strip plang
+	$script = str_replace( $getrid, "",$_SERVER['REQUEST_URI']);
+	$loc="location:http://".getenv(HTTP_HOST).$script;
+	header( $loc);
+}
+if (isset($_COOKIE["plang"])){
+	$conf['lang']=$_COOKIE["plang"];
+}
+</file>
+  * :!: **problem 2 [solved]** :!: conflicts with multilingual plugin browser language preference option; if you want to choose the language and you're using the plugin you have to disable the option, then everything works fine.
+**Comment:** this solution doesn't work if the browser doesn't accept cookies.
+-- posted 2009-07-31 by [[http://www.ls-lug.org/wiki/user:bjaast|bjaast]]
+----
+===== A Improved Using of the top Tip =====
+I use Release 2013-05-10a "Weatherwax" and [[plugin:translation|Translation Plugin]] to set a multi-language wiki. User should visit different home page according to his browser's accepted language priority. I found some shortage of the top tip below:
+  * Can't be used in current DokuWiki;
+  * Can't match language code correctly sometime, e.g., browser accepted languages "zh-tw,zh,en-us,en" will match pattern string "zh" in the available languages "zh,zh-tw,en", so the highest priority browser accepted language "zh-tw" is missed;
+  * Should according to the browser's accepted language priority to search the website's available language page, not vice versa.
+And, I use nice URLs of .htaccess file, the two lines must be commented as below:
+<code>
+#RewriteRule ^$                        doku.php  [L]
+#RewriteRule ^index.php$               doku.php
+</code>
+I only edit one file "index.php" to redirect to the related home page. The entire "index.php" as below, welcome comment it:
+<code php>
+<?php
+/**
+ * Forwarder to doku.php
+ *
+ * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
+ * @author     Andreas Gohr <andi@splitbrain.org>
+ */
+$conf['lang_default'] = 'en'; // default language
+$conf['lang_enabled'] = array('zh', 'zh-tw', 'en');
+// DWD Modify -> Add: Set Language from Browser Language Settings.
+  /*
+  #=============================================================================#
+  # Function: detect_browser_language()                                         #
+  #-----------------------------------------------------------------------------#
+  # Purpose: This function detects the user browser language.                   #
+  #   If no valid language is found then it returns the default content language#
+  # that is set on the configuration file                                       #
+  #                                                                             #
+  # Arguments:                                                                  #
+  # Optionals:                                                                  #
+  # Result: returns a string with the content language.                         #
+  #                                                                             #
+  #=============================================================================#
+  */
+  function detect_browser_language() {
+    global $conf;
+    $languages = preg_replace('/(;q=\d+.\d+)/i', '', getenv('HTTP_ACCEPT_LANGUAGE'));
+    $languages = strtolower($languages);
+//    print($languages.'<br>');
+    $bol_language_detected = false;
+    $browser_langsarray = preg_split("/[^\-a-z]/", $languages);
+//    print_r($browser_langsarray);
+//    print('<br>');
+    foreach ($browser_langsarray as $tmp_browser_lang) {
+      if ($tmp_browser_lang == 'zh-cn' || $tmp_browser_lang == 'zh-sg') {
+        $tmp_browser_lang = 'zh';
+      }
+      if ($tmp_browser_lang == 'zh-hk') {
+        $tmp_browser_lang = 'zh-tw';
+      }
+      if (substr($tmp_browser_lang,0,3) == 'en-') {
+        $tmp_browser_lang = 'en';
+      }
+//      print('tmp_browser:'.$tmp_browser_lang.'<br>');
+      foreach ($conf['lang_enabled'] as $tmp_arr_language) {
+//        print('tmp_enabled:'.$tmp_arr_language.'<br>');
+        if ($tmp_browser_lang == $tmp_arr_language) {
+          $tmp_str_language_detected = $tmp_browser_lang;
+          $bol_language_detected = true;
+          break 2;
+        }
+      } // ForEach pre-defined content language.
+    }// ForEach browser accept language.
+    // If browser is set with compatible language return matching content path
+    // Else return default content language path.
+    if ($bol_language_detected) {
+      return $tmp_str_language_detected;
+    } else {
+      return $conf['lang_default'];
+    } // If browser set with compatible language.
+  } // detect_browser_language
+// DWD Modify End.
+$browser_lang = detect_browser_language();
+//print($browser_lang.'<br>');
+if ($browser_lang == 'zh') {
+  header("Location: /mobilemate/zh/");
+}
+if ($browser_lang == 'zh-tw') {
+  header("Location: /mobilemate/zh-tw/");
+}
+if ($browser_lang == 'en') {
+  header("Location: /mobilemate/about");
+}
+</code>
+-- posted 2013-09-25 [[http://www.learndiary.com/mobilemate/|MobileMate created by littlebat]]
+==== Discussion ====
+Please post your comment about "A Improved Using of the top Tip" below.
+I think there are two goals with the above - one appears to be allow for translation and the other is simply to provide a per-user localised interface for the users of dokuwiki.
+I want the latter function and I achieved it by using the detect_browser_language() function above. I placed it in inc/init.php
+I then hacked init_lang (in init.php). I haven't really used dokuwiki before so please can someone let me know a better place to "hack" this browser language override.
+<code>
+function init_lang($langCode) {
+    //prepare language array
+    global $lang, $config_cascade;
+    $lang = array();
+    $langCode = detect_browser_language();   // HACK this line in to override language setting with browser language
+    //load the language files
+    require(DOKU_INC.'inc/lang/en/lang.php');
+    foreach ($config_cascade['lang']['core'] as $config_file) {
+        if (@file_exists($config_file . 'en/lang.php')) {
+            include($config_file . 'en/lang.php');
+        }
+    }
+    if ($langCode && $langCode != 'en') {
+        if (file_exists(DOKU_INC."inc/lang/$langCode/lang.php")) {
+            require(DOKU_INC."inc/lang/$langCode/lang.php");
+        }
+        foreach ($config_cascade['lang']['core'] as $config_file) {
+            if (@file_exists($config_file . "$langCode/lang.php")) {
+                include($config_file . "$langCode/lang.php");
+            }
+        }
+    }
+}
+</code> (dylan 2016/05/19)