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Get count total products, and refresh automatic

html
--------------------

<div id="mini-cart-count"></div>


php 
-----------------------

add_filter( 'woocommerce_add_to_cart_fragments', 'wc_refresh_mini_cart_count');
function wc_refresh_mini_cart_count($fragments){
    ob_start();
    ?>
    <div id="mini-cart-count">
        <?php echo WC()->cart->get_cart_contents_count(); ?>
    </div>
    <?php
        $fragments['#mini-cart-count'] = ob_get_clean();
    return $fragments;
}


Javacript
------------------- 

$(document.body).trigger('wc_fragment_refresh');

or 

$(document.body).trigger('wc_fragments_refreshed');