如何检索输入类型 ="number" 中输入的数据？

Question

如果这是我的 HTML 四人

<!DOCTYPE html>
<head>
<title>qrFileONEZES</title>
</head>
<body>
<form action="delFourm.php" method="post">


Enter the position 1 - 20 of which to delete at:

 <input type="number" size="6" name="Delete at pos? :" min="1" max="20" value="1"><br>
<br><br>
<input type="submit" name="submit2" value="enterz">

</form>
</body>
</html>

然后将我重定向到另一个文件，delFourm.php 其中：

<?php

.
.
.


if (isset($_POST['submit2']))
{
    $numToDel = $_POST['Delete at pos? :']; // this is the num to del from qrFile?
    // echo "this is my test to see if value is sent? " . $numToDel;
}
else
{
echo "num wasnt obtained?";
}

echo "the number is " . $numToDel;
.
.
.
?>

为什么我的 $numToDel 输出为空白？

我在使用 echo 时没有得到任何输出，我想在这个文件后面的代码段中引用从上一个论坛中选择的数字。我的编码能力很差，所以详细的解释会有所帮助。

Answer 1

ID and NAME tokens must begin with a letter ([A-Za-z]) and may be followed by any number of letters, digits ([0-9]), hyphens ("-"), underscores ("_"), colons (":"), and periods (".").

将您输入的名称更改为：name="delete_at_post"

<!DOCTYPE html>
<head>
<title>qrFileONEZES</title>
</head>
<body>
<form action="delFourm.php" method="post">


Enter the position 1 - 20 of which to delete at:

 <input type="number" size="6" name="delete_at_post" min="1" max="20" value="1"><br>
<br><br>
<input type="submit" name="submit2" value="enterz">

</form>
</body>
</html>

在你的 delFourm.php:

<?php

if (isset($_POST['submit2']))
{
    $numToDel = $_POST['delete_at_post']; // this is the num to del from qrFile?
    // echo "this is my test to see if value is sent? " . $numToDel;
}
else
{
echo "num wasnt obtained?";
}

echo "the number is " . $numToDel;

?>

您可以阅读如何设置名称属性：

http://www.w3.org/TR/html401/types.html#type-cdata

Answer 2

我通过在 HTML fourm

中使用它来工作

other type test for input: <input type="number" name="numm" min="1" max="20"><br>

而不是：

 <input type="number" size="6" name="delete_at_post" min="1" max="20" value="1"><br>

不确定为什么它不起作用，但这并不重要。

如何检索输入类型 ="number" 中输入的数据？

How to retrieve data entered in input type ="number"?

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