[英]how can i add products to the cart wihtout refreshing the product list?
I made a simple shopping cart function but I have 2 problems now.我做了一个简单的购物车 function 但我现在有两个问题。 1 is my product list is so big and my cart and my product list are in same page.
1 是我的产品列表很大,我的购物车和我的产品列表在同一页。 When visitor click on add button its take too long time to reload how can make it work without refreshing the product page I mean add the product to cart without the refreshing the product page?
当访问者单击添加按钮时,它需要很长时间才能重新加载如何在不刷新产品页面的情况下使其工作我的意思是在不刷新产品页面的情况下将产品添加到购物车? And my second problem is I want a product's stock update function how can I make a product update function form that cart function?
我的第二个问题是我想要一个产品的库存更新 function 我怎样才能从购物车 function 进行产品更新 function? Here is my code
这是我的代码
<?php
session_start();
$page = 'producst.php';
// my add function
if (isset($_GET['add'])) {
$quantity = mysql_query('SELECT id, quantity FROM products WHERE id='.mysql_real_escape_string((int)$_GET['add']));
while ($quantity_row = mysql_fetch_assoc($quantity)) {
if ($quantity_row['quantity']!=$_SESSION['cart_'.(int)$_GET['add']]){
$_SESSION['cart_'.(int)$_GET['add']]+='1';
}
}
header('Location: '.$page);
}
// my product list function
function products(){
$result = '';
$get = mysql_query('SELECT id, name, description, price FROM products WHERE quantity > 0 ORDER BY id DESC');
if (mysql_num_rows($get)==0) {
}else{
while ($get_row = mysql_fetch_assoc($get)) {
$result .= '<p>'.$get_row['name'].'<br />'.$get_row['description'].'<br />£'.$get_row['price'].' <a href="cart.php?add='.$get_row['id'].'">add</a></p>';
}
}
return $result;
}
// my cart function
function cart() {
$result = '';
foreach($_SESSION as $name => $value){
if ($value>0) {
if (substr($name, 0, 5)=='cart_') {
$id = substr($name, 5, (strlen($name)-5));
$get = mysql_query('SELECT id, name, price FROM products WHERE id='.mysql_real_escape_string((int)$id));
while ($get_row = mysql_fetch_assoc($get)) {
$sub = $get_row['price']*$value;
$result .= $get_row['name'].' x '.$value.' @ £'.$get_row['price'].' = £'.$sub.'<br />';
}
}
}
}
return $result;
}
?>
You'd have to use JavaScript and AJAX to send requests to your PHP script without reloading the page.您必须使用 JavaScript 和 AJAX 将请求发送到您的 PHP 脚本而无需重新加载页面。 PHP runs on your server, while JavaScript runs on and interacts with the browser.
PHP 在您的服务器上运行,而 JavaScript 在浏览器上运行并与浏览器交互。
Do some research about AJAX (look at the jQuery framework if you'd like).对 AJAX 进行一些研究(如果您愿意,请查看 jQuery 框架)。
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