Language configuration (change url and refresh page on DropDown change) - php

Question

I am setting up a multilanguage website.
I have a dropdown where there is a set of languages that I cover.
I would like script, when dropdown changes, add or replace variable to url and refresh the page.
I do not want to store language in session or cookie.
My goal is that search egnines indexes all my multilanguage pages and to have url rewritting so my URL would look like http://www.index.php/EN/home, which I will cover later.
Currently I have a DropDown which sumbits form on change:
echo "<select name='lang' onchange='this.form.submit()'>";
$array = oci_parse($conn, "SELECT code, name FROM languages");
oci_execute($array);
while ($row = oci_fetch_array($array))
{
if ($lang == $row[0])
{
echo "<option value=".$row[0]." selected='selected'>".$row[0]."</option>";
}
else
{
echo '<option value='.$row[0].'>'.$row[0].'</option>';
}
}
echo '</select>';

Answer 1

<script src="http://code.jquery.com/jquery-1.9.1.min.js"></script>
<select name='lang' id="dropdown">
<option value="EN">English</option>
<option value="FR">French</option>
</select>
<script>
$('#dropdown').change(function()
{
var langValue = $('#dropdown').val(); // i.e. langValue='EN' or langValue='FR'
if(langValue)
{
window.location.href = 'http://www.index.php/' + langValue + '/home';
return true;
}
return false;
});
function addLang(langValue)
{
var url = window.location.href;
var urlP = url.split('/');
if(urlP.length <4)
{
url = url + langValue; // adding new lang
}
else
{
url[3] = langValue; // replace old lang
url = url.join('/');
}
console.log(url);
}
</script>

Answer 2

Try this,
$(document).ready(function(){
$('#form').submit(function()
{
var lang=$("[name='lang']")val();
window.location.href='http://www.index.php/' + lang+ '/home';
}
});
});