Code-Snippets-Functions/Execute a function on a child site/WooCommerce/enable-cod-payment-method-only-for-specific-countries.txt

add_filter( 'woocommerce_available_payment_gateways', 'countries_based_payment_gateway_cod' );
function countries_based_payment_gateway_cod( $available_gateways ) {
    if ( is_admin() ) return $available_gateways; // Only on frontend

    // HERE define the allowed country codes  below (array of coma separated strings)
    $allowed_countries = array( 'AE' ); // United Arab Emirates country code

    if ( isset( $available_gateways['cod'] ) && ! in_array( WC()->customer->get_shipping_country(), $allowed_countries ) ) {
        unset( $available_gateways['cod'] );
    } 
    return $available_gateways;
}