Detect Browser Language in PHP

browser-detection, cross-browser, php

Solution

why dont you keep it simple and clean

<?php
    $lang = substr($_SERVER['HTTP_ACCEPT_LANGUAGE'], 0, 2);
    $acceptLang = ['fr', 'it', 'en']; 
    $lang = in_array($lang, $acceptLang) ? $lang : 'en';
    require_once "index_{$lang}.php"; 

?>

Problem

I use the following PHP script as index for my website. This script should include a specific page depending on the browser's language (automatically detected). This script does not work well with all browsers, so it always includes `index_en.php` for any detected language (the cause of the problem is most probably an issue with some Accept-Language header not being considered). Could you please suggest me a more robust solution? ``` <?php // Open session var session_start(); // views: 1 = first visit; >1 = second visit // Detect language from user agent browser function lixlpixel_get_env_var($Var) { if(empty($GLOBALS[$Var])) { $GLOBALS[$Var]=(!empty($GLOBALS['_SERVER'][$Var]))? $GLOBALS['_SERVER'][$Var] : (!empty($GLOBALS['HTTP_SERVER_VARS'][$Var])) ? $GLOBALS['HTTP_SERVER_VARS'][$Var]:''; } } function lixlpixel_detect_lang() { // Detect HTTP_ACCEPT_LANGUAGE & HTTP_USER_AGENT. lixlpixel_get_env_var('HTTP_ACCEPT_LANGUAGE'); lixlpixel_get_env_var('HTTP_USER_AGENT'); $_AL=strtolower($GLOBALS['HTTP_ACCEPT_LANGUAGE']); $_UA=strtolower($GLOBALS['HTTP_USER_AGENT']); // Try to detect Primary language if several languages are accepted. foreach($GLOBALS['_LANG'] as $K) { if(strpos($_AL, $K)===0) return $K; } // Try to detect any language if not yet detected. foreach($GLOBALS['_LANG'] as $K) { if(strpos($_AL, $K)!==false) return $K; } foreach($GLOBALS['_LANG'] as $K) { //if(preg_match("/[[( ]{$K}[;,_-)]/",$_UA)) // matching other letters (create an error for seo spyder) return $K; } // Return default language if language is not yet detected. return $GLOBALS['_DLANG']; } // Define default language. $GLOBALS['_DLANG']='en'; // Define all available languages. // WARNING: uncomment all available languages $GLOBALS['_LANG'] = array( 'af', // afrikaans. 'ar', // arabic. 'bg', // bulgarian. 'ca', // catalan. 'cs', // czech. 'da', // danish. 'de', // german. 'el', // greek. 'en', // english. 'es', // spanish. 'et', // estonian. 'fi', // finnish. 'fr', // french. 'gl', // galician. 'he', // hebrew. 'hi', // hindi. 'hr', // croatian. 'hu', // hungarian. 'id', // indonesian. 'it', // italian. 'ja', // japanese. 'ko', // korean. 'ka', // georgian. 'lt', // lithuanian. 'lv', // latvian. 'ms', // malay. 'nl', // dutch. 'no', // norwegian. 'pl', // polish. 'pt', // portuguese. 'ro', // romanian. 'ru', // russian. 'sk', // slovak. 'sl', // slovenian. 'sq', // albanian. 'sr', // serbian. 'sv', // swedish. 'th', // thai. 'tr', // turkish. 'uk', // ukrainian. 'zh' // chinese. ); // Redirect to the correct location. // Example Implementation aff var lang to name file /* echo 'The Language detected is: '.lixlpixel_detect_lang(); // For Demonstration echo "<br />"; */ $lang_var = lixlpixel_detect_lang(); //insert lang var system in a new var for conditional statement /* echo "<br />"; echo $lang_var; // print var for trace echo "<br />"; */ // Insert the right page iacoording with the language in the browser switch ($lang_var){ case "fr": //echo "PAGE DE"; include("index_fr.php");//include check session DE break; case "it": //echo "PAGE IT"; include("index_it.php"); break; case "en": //echo "PAGE EN"; include("index_en.php"); break; default: //echo "PAGE EN - Setting Default"; include("index_en.php");//include EN in all other cases of different lang detection break; } ?> ```

Original source