使用PHP从SQL数据库中选择不同的语言

Question

I'm having a 2 issues with my website. It's a multi language one (german, english). I always kept the translations in an XML document like this

<?xml version="1.0" encoding="utf-8"?>
<root>
    <les>
        <en>Lesson</en>
        <de>Lektion</de>
    </les>

Then I converted those XML vars into php ones and echo'd them where needed like this

$xml=simplexml_load_file("langindex.xml") or die("xml not found!");
$les = $xml->les->$lang;

<?php echo $les;?>

Problem 1 is that no language is set as default when I open the Website so I always have to select a language first, even though I included that !isset. If I don't select anything, some images will be streched and it gives me the error that no language is set.

<?php
session_start();
$page = 0;
$lang = $_GET['lang'];
$langArray = array('en','de');
$found = false;

if(in_array($lang, $langArray))
    $found = true;
if(!$found)
    $lang = 'en';

if(!isset($_SESSION['lang']))
    $_SESSION['lang'] = 'en';

if(isset($_GET['lang']) && in_array($_GET['lang'], array('en', 'de')))
    $_SESSION['lang'] = $_GET['lang'];


include '../nihongo/php/dbconnect.php';

My language switch works with a simple <a href="?lang=X"> and that ?lang=X will be shown in the URL as well.

Enough of that. Since XML is pretty inpractical I wanted to switch the whole thing up to an SQL database.

I've created a table with the columns ID, german and english and connected the db sucessfully. Now I want PHP to tell SQL to get only the text of the session language with a select like this for example.

SELECT german FROM texts WHERE ID = '1'
SELECT english FROM texts WHERE ID = '2'

My problem is that I really don't know how to do that with PHP. I would think that I'd either have to throw a PHP var into the statement somehow, or select the whole row and let PHP decide which one should be displayed. Every advice/suggestion is welcome! Thanks in advance!

Answer 1

I like the way OpenCart implemented this, because it's simple and doesn't add additional calls to the DB. Take a look at their implementation. You learn a lot investigating and learning from Open Source projects.

They have a php script per language and module with an array that contains all the strings. It just include or load the scripts to get access to the strings, for example: en-gb . Loading a string by its key with this method:

language->get('heading_title');