Forcing default currency at checkout

Aha! The issue is that the currencies' initialization doesn't take the setting "Switch To Default Language Currency?" into account on the very first access.

Try changing your store's /includes/init_includes/init_currencies.php, adding the highlighted fragment:

<?php
/**
 * initialise currencies
 * see {@link  http://www.zen-cart.com/wiki/index.php/Developers_API_Tutorials#InitSystem wikitutorials} for more details.
 *
 * @package initSystem
 * @copyright Copyright 2003-2007 Zen Cart Development Team
 * @copyright Portions Copyright 2003 osCommerce
 * @license http://www.zen-cart.com/license/2_0.txt GNU Public License V2.0
 * @version $Id: init_currencies.php 6300 2007-05-11 15:49:41Z drbyte $
 */
if (!defined('IS_ADMIN_FLAG')) {
  die('Illegal Access');
}

// If no currency is set, use appropriate default
if (!isset($_SESSION['currency']) && !isset($_GET['currency']) ) $_SESSION['currency'] = [B](USE_DEFAULT_LANGUAGE_CURRENCY == 'true') ? LANGUAGE_CURRENCY : [/B]DEFAULT_CURRENCY;  //-20160404-lat9-Force language currency

// Validate selected new currency, if any. Is false if valid not found.
$new_currency = (isset($_GET['currency'])) ? zen_currency_exists($_GET['currency']) : zen_currency_exists($_SESSION['currency']);

// Validate language-currency and default-currency if relevant. Is false if valid not found.
if ($new_currency == false || isset($_GET['language'])) $new_currency = (USE_DEFAULT_LANGUAGE_CURRENCY == 'true') ? zen_currency_exists(LANGUAGE_CURRENCY) : $new_currency;

// Final check -- if selected currency is bad and the "default" is bad, default to the first-found currency in order of exch rate.
if ($new_currency == false) $new_currency = zen_currency_exists(DEFAULT_CURRENCY, true);
//echo '<br />NEW = ' . $new_currency . '<br />';

// Now apply currency update
if (
   // Has new currency been selected?
  (isset($_GET['currency'])) || 

  // Does language change require currency update?
  (isset($_GET['language']) && USE_DEFAULT_LANGUAGE_CURRENCY == 'true' && LANGUAGE_CURRENCY != $_SESSION['currency']  )

) {
  $_SESSION['currency'] = $new_currency;
  // redraw the page without the currency/language info in the URL
  if (isset($_GET['currency']) || isset($_GET['language'])) zen_redirect(zen_href_link($current_page_base, zen_get_all_get_params(array('currency','language'))));
}
?>

Thanks lat9 ... I must need more coffee today ... I stared at that line multiple times and missed that, because the next few lines take the language into account. (But they only trigger if the language is being changed.) Good catch.

hairydog, does the suggestion from lat9 fix your situation?

DrByte:

hairydog, does the suggestion from lat9 fix your situation?I hope so. I've put that bit of code in, but haven't had time to remove the workaround to see if the problem is still gone. It certainly looks like the sort of thing the symptoms pointed to.

Thanks to you and lat9

On reflection, it would be really nice to strip out all the language code entirely, so that there are no language lookups and it uses the default language regardless of sessions, settings or anything. In insular little England, I have never been asked to set up any multi-language sites.

But there again, there are lots of other bells and whistles in ZC I'd like to get rid of!