How do I set a PHP session variable from a hyperlink?

Question

My first stab at this so please don't laugh! I've created a session variable to allow users to switch between UK and US content on the same site (UK default).

<?php
session_start();
$_SESSION['territory'] = 'UK';
if (isset($_SESSION['territory'])){
    echo 'Session is set to '.$_SESSION['territory'];
}
else{
    echo 'Session not set yet';
}
?>

All good so far. I now need a couple of links to set this variable when users click either UK or US. All I can Google is setting variables via forms, with nothing helpful about setting via a plain old href. Can anybody steer me in the right direction? Much appreciated.

Answer 1

You can append ?lang=UK to the url, then the $_GET['lang'] variable will be available in your code. For example:

switch($_GET['lang']) {
 case 'UK': case 'US':
   $_SESSION['territory'] = $_GET['lang'];
   break;
 default:
   $_SESSION['territory'] = 'UK';
}

Answer 2

Firstly, you can do this with just a cookie (no session necessary).

That being said, just create some links to a uri, say: /set_territory.php?cc=UK and so forth.

set_territory.php can then set the territory via $_GET['cc'] and redirect the user to the appropriate content.

Answer 3

if you want to set session variable with help of click of link. You will have to use ajax, when you click on a link you can call a javascript function this function can then in turn make a ajax hit to a php file and then this php file can set the session variable.