Open the WordPress theme’s functions.php file and add a filter for woocommerce to it (ATTENTION !!! The code below is added to the end of the functions.php file)
add_filter( 'woocommerce_currencies', 'add_my_currency' );
function add_my_currency( $currencies ) {
$currencies['UAH'] = __( 'Українська гривня', 'woocommerce' );
return $currencies;
}
add_filter('woocommerce_currency_symbol', 'add_my_currency_symbol', 10, 2);
function add_my_currency_symbol( $currency_symbol, $currency ) {
switch( $currency ) {
case 'UAH': $currency_symbol = 'грн'; break;
}
return $currency_symbol;
}