WOOCS - WooCommerce Currency Switcher

$WOOCS->is_multiple_allowed

This is not a function – this is an important variable in the plugin main class WOOCS, and its always shows is ‘Is multiple allowed‘ options enabled or not. Predefined in the plugin settings.

global $WOOCS;
if($WOOCS->is_multiple_allowed){
    //do smth here if 'Is multiple allowed' mode enabled
}

If you want let your customers pay with their selected currency on the front of your site – you should set multiple mode to ‘Yes’