嘿,我一直试图解决这个问题几个小时了。我对PHP很新,所以对我有一些同情!
我正在尝试调用$ _POST [$ id],并使用foreach将其放入表中。它也告诉我id是一个未识别的索引。知道为什么吗?如果您对初学者有任何其他指示,请随时分享
提前谢谢!
索引表:
foreach ($rows as $row) {
$food = $row["food"];
$price = $row["price"];
$picture = $row["picture"];
$description = $row["description"];
$id = $row['id'];
echo "<tr>
<td><img src='$picture' width='120px' /></td>
<td>$food</td>
<td>$$price</td>
<td><input type='number' min='0' max='10' enctype='multipart/form-data' placeholder='#' name='<?php echo $id; ?>' maxlength='1'></td>
</tr>";
}
submitorder.php表:
while($row = $result->fetch_array()){
$rows[] = $row;
}
foreach ($rows as $row) {
$food = $row["food"];
$price = $row["price"];
$id = $_POST[$id];
if(!empty($_POST[$id])){
if(isset($_POST[$id])){
$qty = $_POST[$id];
}else{
echo "Is NOT SET";
}
}else{
echo "Is EMPTY";
}
echo "<tr>
<td>$food</td>
<td></td>
<td>$$price</td>
</tr>";
}
答案 0 :(得分:1)
foreach ($rows as $row) {
$food = $row["food"];
$price = $row["price"];
$picture = $row["picture"];
$description = $row["description"];
$id = $row['id'];
echo '<tr>
<td><img src='.$picture.' width=\'120px\' /></td>
<td>'.$food.'</td>
<td>'.$price.'</td>
<td><input type=\'number\' min=\'0\' max=\'10\' enctype=\'multipart/form-data\' placeholder=\'#\' name='.$id.' maxlength=\'1\'></td>
</tr>';
}
while($row = $result->fetch_array()){
$rows[] = $row;
}
foreach ($rows as $row) {
$food = $row["food"];
$price = $row["price"];
if(isset($_POST['id'])){
$qty = $_POST['id'];
}else{
echo "Is NOT SET";
}
echo '<tr>
<td>' . $food . '</td>
<td></td>
<td>' .$price. '</td>
</tr>';
}
修复错误,我唯一能想到的是你的表单实际上并没有使用POST作为方法。此外,为了您自己和他人,如果$ _POST ['id']值实际上是数量,请将其重命名为数量,以免给自己带来一些麻烦。
答案 1 :(得分:1)
问题在于:
<td><input type='number' min='0' max='10' enctype='multipart/form-data' placeholder='#' name='<?php echo $id; ?>' maxlength='1'></td>
具体来说,这里:
.... name='<?php echo $id; ?>' ....
您已经在PHP字符串中。你应该连接起来。否则,您的元素名称实际上是<?php echo [whatever the ID is]; ?>