PHP changing language version

Question

I have a website which i want to create other language version. I don\'t want to create folder for each language. I was wondering it it\'s possible to add a combobox on each

Answer 1

If you have a combobox, when the user submits it, store the language in the session (session_start(); has to be called) with $_SESSION['lang'] = $_POST['lang'];. I'd advise you to whitelist languages as such:

session_start();

// define language whitelist
$allowedLangs = array('en', 'de');

// only store the new user language if it's an allowed one
if (isset($_POST['lang']) && in_array($_POST['lang'], $allowedLangs)) {
    $_SESSION['lang'] = $_POST['lang'];
}

// define the user language based on session data or use 'en' as default if not available
$userLang = isset($_SESSION['lang']) ? $_SESSION['lang'] : 'en';

// parse some language file according to the language
$translations = // TODO load some file with $userLang here

Of course you should adjust this to your own project and environment. For translation files, you can use a plain PHP file that returns an array like such:

 'Translation',
);

Then if you include that file, the return value of the include will be the array, so in the above code you could do:

$translations = include 'translations/'.$userLang.'.php';

You then have to output all your text through this $translations variable, like echo $translations['some.key'].