PHP更新购物车数量(表单部分/PHP处理部分)_php技巧

 
 
PHP 处理部分： 
 代码如下:

require 'config.inc.php'; 
require 'checklogin.php'; 
$username = $_SESSION['username']; 
$action = $_GET['action']; 
switch ($action) { 
case "edit_num": 

$arr = $arr = $_POST['suliang']; 
foreach($arr as $key=>$value){ 
$sqlgx = "update `cartemp` set suliang='$value' where username='".$username."' and flag=0 and sp_id='".$key."'"; 
mysql_query($sqlgx, $conn); 
echo ""; 
} 
break; 

case "null": 
$null_sql = "delete from `cartemp` where username='$username' and flag=0 "; 
mysql_query($null_sql, $conn); 
echo ""; 
break; 
case "del": 
$id = $_GET['id']; 
$del_sql = "delete from `cartemp` where id=$id"; 
mysql_query($del_sql, $conn); 
echo ""; 
break; 
} 
?>