Let user set currency?

PHP
1

I’ve googled this but can’t seem to find anything. Basically i want the user to be able to select their currency. I have clickable flag images and when clicked it needs to set a session variable or cookie or something? I then need to be able to use the value selected around the site.

Can anyone point me in the right direction for this?

Thanks

2

You’ll most likely want to store their preference in the user table, so that it is stored for their next visit. You’ll need a table that stores conversion rates. What type of site is this? Online store?

3

Just make the link on each flags set a querystring variable for each currency, IE: http://www.yoursite.com/index.php?currency=eur

Then:


<?php
session_start();

$supported_currencies = array('USD', 'EUR', 'GBP');

if ((isset($_GET['currency'])) && ($_GET['currency'] != '') 
        && (array_search(strtoupper($_GET['currency']), $supported_currencies) !== false)) {
    
    $_SESSION['currency'] = strtoupper($_GET['currency']);

} else {
    $_SESSION['currency'] = 'USD'; // Set a default
}

// Then, later on if you want to grab the selected currency

echo "The current currency is: {$_SESSION['currency']}";
?>
4

I would advise against this. Conversion rates change frequently … sometimes a few times a day. It would be better to grab the live data from an external exchange rate API. It’s pretty easy to do. Check out the thread at: http://www.sitepoint.com/forums/showthread.php?896348-Managing-Credits-In-Different-Currencies