Woocommerce update fragments in multiple divs

I’m using the following code to display different image based on the condition whether the cart is empty or not.

add_filter( 'woocommerce_add_to_cart_fragments', 'custom_happy_sad_thumb' );
function custom_happy_sad_thumb( $fragments ) {
 
    ob_start();
    
    $cart_count = WC()->cart->cart_contents_count;
    
    ?>
    <div class="sad">
        <?php
        if ( $cart_count > 0 ) { ?>
            <img src="<?php echo get_stylesheet_directory_uri(); ?>/assets/img/happy.png" alt="">
        <?php }
        else { ?>
            <img src="<?php echo get_stylesheet_directory_uri(); ?>/assets/img/sad.png" alt="">
        <?php } ?>
    </div>
    <?php
 
    $fragments['.sad'] = ob_get_clean();
    return $fragments;
}

Now, I want to have similar functionality in the footer also, the only difference is there the div class name is ‘footer-left’, so would I need to rewrite this code again in functions.php? or can I just add the class name in $fragments array? Like this: $fragments[‘.sad’, ‘footer-left’]

Thanks in advance.