$qty) { if($_post[$isbn] == '0') { unset($_session['cart'][$isbn]); } else { $_session['cart'][$isbn] = $_post[$isbn]; } } $_session['total_price'] = calculate_price($_session['cart']); $_session['items'] = calculate_items($_session['cart']); } do_html_header(your shopping cart); if(($_session['cart']) && (array_count_values($_session['cart']))) { display_cart($_session['cart']); } else { echo there are no items in your cart
; } $target = index.php; // if we have just added an item to the cart, continue shopping in that category if($new) { $details = get_book_details($new); if($details['catid']) { $target = show_cat.php?catid=.$details['catid']; } } display_button($target, continue-shopping, continue shopping); // use this if ssl is set up // $path = $_server['php_self']; // $server = $_server['server_name']; // $path = str_replace('show_cart.php', '', $path); // display_button(https://.$server.$path.checkout.php, // go-to-checkout, go to checkout); // if no ssl use below code display_button(checkout.php, go-to-checkout, go to checkout); do_html_footer();?>
代码中的$_session['cart'][$new]是什么意思，为什么要这样子做？
回复讨论(解决方案) 你打印你的$_session看看就知道的。
$_session 中储存了一个叫cart 的数组对象，取出来就是$_session['cart']  $new是这个数组的键值，取法就是$_session['cart'][$new]了