Add cart in menu with quantity and price

Add cart in menu with quantity and price.php

<?php

add_filter( 'wp_nav_menu_items', 'add_cart_link', 10, 2 );
function add_cart_link( $items, $args ) {
	$cart  = MP_Cart::get_instance();
	$items .= '<li class="menu_cart">'.mp_cart_link( false, false, 'Cart <span class="mp_custom_cart_icon"></span> (<span class="mp_custom_cart_details"> ' . $cart->item_count( false, false ) . ' - £' . $cart->total( false ) . ' </span>)' ).'</li>';
	return $items;
}

add_action( 'wp_footer', 'add_cart_value' );
function add_cart_value() {
	?>
	<script type="text/javascript">
		jQuery(function($){
                    var data = {
                            'action': 'get_cart_value'
                    };
                    setInterval(function() {
                        $.post( '<?php echo admin_url( 'admin-ajax.php' ); ?>', data, function(response) {
                                $('.menu_cart a span.mp_custom_cart_details').text( ' ' + response + ' ' );
                        });
                    }, 5000);
		});
	</script>
	<?php
}

add_action( 'wp_ajax_get_cart_value', 'get_current_cart_value' );
add_action( 'wp_ajax_nopriv_get_cart_value', 'get_current_cart_value' );

function get_current_cart_value() {
	$cart  = MP_Cart::get_instance();
	
	echo $cart->item_count( false, false ) . ' - £' . $cart->total( false );
	die();
}