我觉得这很直截了当。我有这样的$ _GET:
$cameFromCat = $_GET['cat'];
echo $cameFromCat;
这将按预期读出“卡片”,所以稍后我会这样问:
if ($_POST['submission'] == "Continue Shopping") {
Header("location: index.php?cat=" . $cameFromCat);
}
该链接将我发送至index.php?cat=
。
它没有读出'卡'。但是,如果我硬编码var:
$cameFromCat = "Cards";
链接将我发送到index.php?cat = Cards
这让我很生气。我做错了什么?
更新:周围的代码:
$cart = $_SESSION['cart'];
$cameFromCat = $_GET['cat'];
$cameFromPage = $_GET['pagenum'];
$action = $_GET['action'];
$cardqty2 = $_POST['var'];
switch ($action) {
case 'add':
if ($cart) {
for ($i = 1; $i <= $cardqty2; $i++) {
$cart .= ','.$_GET['id'];
}
} else {
$cart = $_GET['id'];
for ($i = 2; $i <= $cardqty2; $i++) {
$cart .= ','.$_GET['id'];
}
}
break;
case 'delete':
if ($cart) {
$items = explode(',',$cart);
$newcart = '';
foreach ($items as $item) {
if ($_GET['id'] != $item) {
if ($newcart != '') {
$newcart .= ','.$item;
} else {
$newcart = $item;
}
}
}
$cart = $newcart;
}
break;
case 'update':
if ($_POST['submission'] == "Update") {
if ($cart) {
$newcart = '';
foreach ($_POST as $key=>$value) {
if (stristr($key,'qty')) {
$id = str_replace('qty','',$key);
$items = ($newcart != '') ? explode(',',$newcart) : explode(',',$cart);
$newcart = '';
foreach ($items as $item) {
if ($id != $item) {
if ($newcart != '') {
$newcart .= ','.$item;
} else {
$newcart = $item;
}
}
}
for ($i=1;$i<=$value;$i++) {
if ($newcart != '') {
$newcart .= ','.$id;
} else {
$newcart = $id;
}
}
}
}
}
$cart = $newcart;
break;
}
if ($_POST['submission'] == "Checkout") {
Header("Location: address.php");
}
if ($_POST['submission'] == "Continue Shopping") {
Header("location: index.php?cat=" . $cameFromCat);
}
}
答案 0 :(得分:1)
确保所有POST和GET值都已正确发送到您的脚本:
// check if GET['cat'] isset
if(!isset($_GET['cat'])) {
die('GET.cat not set');
}
// check if POST['submissuion'] isset
if(!isset($_POST['submission'])) {
die('POST.submission not set');
}
$cameFromCat = $_GET['cat'];
echo $cameFromCat;
if ($_POST['submission'] == "Continue Shopping") {
Header("location: index.php?cat=" . $cameFromCat);
}
答案 1 :(得分:0)
我认为问题与开关条件有关。
看一下代码的这一部分:
case 'update':
if ($_POST['submission'] == "Update") {
if ($cart) {
$newcart = '';
foreach ($_POST as $key=>$value) {
if (stristr($key,'qty')) {
$id = str_replace('qty','',$key);
$items = ($newcart != '') ? explode(',',$newcart) : explode(',',$cart);
$newcart = '';
foreach ($items as $item) {
if ($id != $item) {
if ($newcart != '') {
$newcart .= ','.$item;
} else {
$newcart = $item;
}
}
}
for ($i=1;$i<=$value;$i++) {
if ($newcart != '') {
$newcart .= ','.$id;
} else {
$newcart = $id;
}
}
}
}
}
$cart = $newcart;
break;
}
休息;在if ($_POST['submission'] == "Update")
之内
另一个问题是一个} 缺少围绕着switch语句。
我的合格猜测是您希望将代码更改为:
case 'update':
if ($_POST['submission'] == "Update") {
if ($cart) {
$newcart = '';
foreach ($_POST as $key=>$value) {
if (stristr($key,'qty')) {
$id = str_replace('qty','',$key);
$items = ($newcart != '') ? explode(',',$newcart) : explode(',',$cart);
$newcart = '';
foreach ($items as $item) {
if ($id != $item) {
if ($newcart != '') {
$newcart .= ','.$item;
} else {
$newcart = $item;
}
}
}
for ($i=1;$i<=$value;$i++) {
if ($newcart != '') {
$newcart .= ','.$id;
} else {
$newcart = $id;
}
}
}
}
}
$cart = $newcart;
}
break;
}