首页 / 网页编程 / PHP / PHP更新购物车数量（表单部分/PHP处理部分）

表单部分：
复制代码 代码如下:
<form action="？action=edit_num" method="post" name="car<？php $c_rs["id"];？>" id="car<？php $c_rs["id"];？>">
<input name="suliang[<？php echo $c_rs["sp_id"];？>]" type="text" id="suliang[<？php echo $c_rs["sp_id"];？>]" value="<？php echo $c_rs["suliang"];？>"/>
<input type="submit" name="button" id="button" value="更新购物车" />
</form>

PHP 处理部分：
复制代码 代码如下:
<？php
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 "<script>location.href="shopcat.php"</script>";
}
break;

case "null":
$null_sql = "delete from `cartemp` where username="$username" and flag=0 ";
mysql_query（$null_sql, $conn）;
echo "<script>location.href="shopcat.php"</script>";
break;
case "del":
$id = $_GET["id"];
$del_sql = "delete from `cartemp` where id=$id";
mysql_query（$del_sql, $conn）;
echo "<script>location.href="shopcat.php"</script>";
break;
}
？>