Shoestrap 3 Woo child - Ajax cart in navbar (inside functions.php)

functions.php

<?php
add_filter('add_to_cart_fragments', 'woocommerce_header_add_to_cart_fragment');
 
function woocommerce_header_add_to_cart_fragment( $fragments ) {
     global $woocommerce;

     ob_start();

     ?>
     <a>cart->get_cart_url(); ?>" title="<?php _e('View your shopping cart', 'woothemes'); ?>"><?php echo sprintf(_n('%d item', '%d items', $woocommerce->cart->cart_contents_count, 'woothemes'), $woocommerce->cart->cart_contents_count);?> - <?php echo $woocommerce->cart->get_cart_total(); ?></a>
<?php

$fragments['a.cart-contents'] = ob_get_clean();

return $fragments;

}