Customize Currency Symbol

For example the standard currency symbol for New Zealand Dollars is $ but for clarity we’d like to use NZ$.

This can be achieved by adding the following to the THEME/functions.php file:

add_filter('woocommerce_currency_symbol', 'change_existing_currency_symbol', 10, 2);

function change_existing_currency_symbol( $currency_symbol, $currency ) {
     switch( $currency ) {
          case 'NZD': $currency_symbol = 'NZ$'; 
          break;
     }
     return $currency_symbol;
}