问小型php修改-数量小计产品页面

EN

add_filter( 'woocommerce_available_variation', 'variable_product_total_amount_qty_change', 10, 3 );
function variable_product_total_amount_qty_change( $data, $product, $variation ) {

    $data['price_html'] .= '<div id="product_total_price" class="total-price-qty variable_products">Product Total: <span class="price">'.$data['display_price'].'</span></div>';
?>
    <script>
   jQuery(function($){
       jQuery( '.variations_form' ).each( function() {
    jQuery(this).on( 'found_variation', function( event, variation ) {
        console.log(variation);//all details here
var price = variation.display_price;//selectedprice
        console.log(price);
var currency = '<?php echo   get_woocommerce_currency_symbol(); ?>';            
        $('[name=quantity]').change(function(){
        if ((this.value > 1)) { 
 var product_total = parseFloat(price * this.value);
$('#product_total_price').fadeIn();
 $('#product_total_price .price').html( currency + product_total.toFixed(2));
                } else {
 $('#product_total_price').fadeOut();
                }
        });
                });
            });
        });  

    </script>
<?php

return $data;
}