phpMyAdmin 2.7.0 会自动去除语言列表中非 UTF-8 的版本的语言

博客围绕phpMyAdmin/libraries/database_interface.lib.php文件第539行代码展开，当MySQL版本大于等于4.1.x时，若$lang已定义且未强制设置语言，会自动将语言切换为UTF - 8版本，还会移除非UTF - 8选项，同时提到显示所有语言的方式。

file: phpMyAdmin/libraries/database_interface.lib.php
line: 539

    if (PMA_MYSQL_INT_VERSION >= 40100) {

        // If $lang is defined and we are on MySQL >= 4.1.x,
        // we auto-switch the lang to its UTF-8 version (if it exists and user didn't force language)
        if (!empty($GLOBALS['lang']) && (substr($GLOBALS['lang'], -5) != 'utf-8') && !isset($GLOBALS['cfg']['Lang'])) {
            $lang_utf_8_version = substr($GLOBALS['lang'], 0, strpos($GLOBALS['lang'], '-')) . '-utf-8';
            if (!empty($GLOBALS['available_languages'][$lang_utf_8_version])) {
                $GLOBALS['lang'] = $lang_utf_8_version;
                $GLOBALS['charset'] = $charset = 'utf-8';
            }
        }

        // and we remove the non-UTF-8 choices to avoid confusion
        if (!defined('PMA_REMOVED_NON_UTF_8')) {
            $tmp_available_languages        = $GLOBALS['available_languages'];
            $GLOBALS['available_languages'] = array();
            foreach ($tmp_available_languages AS $tmp_lang => $tmp_lang_data) {
                //if (substr($tmp_lang, -5) == 'utf-8') {
                    $GLOBALS['available_languages'][$tmp_lang] = $tmp_lang_data;
                //}
            } // end foreach
            unset($tmp_lang, $tmp_lang_data, $tmp_available_languages);
            define('PMA_REMOVED_NON_UTF_8',1);
        }
        // more