lang.php

<?php
function userLanguage($baseUrl,$lang) {
    $file = $_SERVER['DOCUMENT_ROOT'].$baseUrl.'/locales/'. $lang . '.json';
    if(!file_exists($file))
    {
        $file = $_SERVER['DOCUMENT_ROOT'].$baseUrl. '/locales/it.json';
    }
    return json_decode(file_get_contents($file),TRUE);
}

function __($string) {
    $lang = getLang();
    if (!Flight::has('i18n')) Flight::set('i18n', userLanguage (Flight::request()->base,$lang));
    $translation=Flight::get('i18n');
    if (isset($translation[$string]))
        return $translation[$string];
    else
        return $string;
}

function setLang($lang) {
    setcookie("extractLang", $lang, time()+31536000,'/');
    Flight::set('lang',$lang);
}

function getLang() {
    if (!isset($_COOKIE["extractLang"])) {
        setLang('it');
    }
    if(Flight::has('lang'))
      return Flight::get('lang');
    return $_COOKIE["extractLang"];
}

function checkLang() {
    if (isset(Flight::request()->query['lang'])) {
        setLang(substr(Flight::request()->query['lang'],0,2));
    }
}
?>