Problems with sessions and cookies

[Bootsman123]

A user selects a language ($lang_select) which has two possibilities for now: "en" and "nl". The choise is then stored in both a cookie and a session and they are used for further things in the site.

<?php
$cache_limiter = session_cache_limiter('private');

/* Expiration after 2 hours. */
$cache_expire = session_cache_expire(120);

if ((!in_array ($lang_select, $lang_array) || !isset ($lang_select)) AND (!isset ($_SESSION['lang_used']) && !isset ($_COOKIE['lang_used'])))
{
	$lang_select = "en";
}

if (isset ($_SESSION['lang_used']))
{
	if ($lang_select != $_SESSION['lang_used'])
	{
		/* Destroy old session and create a new one. */
		session_unset();
		session_destroy();

	session_start();

	session_register('lang_used');
	$_SESSION['lang_used'] = $lang_select;
}
else 
{
	$lang_select = $_SESSION['lang_used'];
}
}
elseif (isset ($_COOKIE['lang_used']))
{
	if ($lang_select != $_COOKIE['lang_used'])
	{
		setcookie ("lang_used", $lang_select, time() + 60*60*24*2);

	session_start();

	session_register('lang_used');
	$_SESSION['lang_used'] = $lang_select;
}
else
{
	$lang_select = $_COOKIE['lang_used'];
}
}
else
{
	/* If nor a cookie nor a session has been set, create both. */
	setcookie ("lang_used", $lang_select, time() + 60*60*24*2);

session_start();

session_register('lang_used');
$_SESSION['lang_used'] = $lang_select;
}
?>

If it's working correctly (which it isn't, because it doens't return anything) should return the variable $lang_select. BTW: It's included in every page, where it get his variable $lang_array, which is just an array like this: $lang_array = array ("en", "nl");

[sarahk]

I'm assuming that you are using PHPv4.0 or greater.

To check try:

<?php
echo 'My server is using PHP v' . phpversion();
?>

If you are using v3.xx then you need to refer to the session using the older notation of

$HTTP_SESSION_VARS['name']

[Weedpacket]

Small correction; $_SESSION was introduced in PHP4.1; PHP4.0.x still used $HTTP_SESSION_VARS.

[Bootsman123]

Originally posted by sarahk
I'm assuming that you are using PHPv4.0 or greater.

To check try:

<?php
echo 'My server is using PHP v' . phpversion();
?>

If you are using v3.xx then you need to refer to the session using the older notation of

$HTTP_SESSION_VARS['name'] [/B]

Using your little example, I got:
My server is using PHP v4.2.2