PHP updates shopping cart quantity (form part/PHP processing part)_PHP tutorial

Form part:

Copy code The code is as follows:

PHP processing part:

Copy code The code is as follows:

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;
}
?>

http://www.bkjia.com/PHPjc/327053.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/327053.htmlTechArticleForm part: Copy the code as follows: 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...