未定义变量：POST - PHP 和 MySQL
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Undefined variable: POST - PHP and MySQL
提问by Tobias Moe Thorstensen
I've got a form like this:
我有一个这样的表格：
<form name="htmlform" method="post" action="script/gen.php?postData">
<table width="450px">
</tr>
<tr>
<td valign="top">
<label for="customer">Customer:</label>
</td>
<td valign="top">
<input type="text" name="customer" maxlength="50" size="30">
</td>
</tr>
<tr>
<td valign="top"">
<label for="nol">Number of licences: </label>
</td>
<td valign="top">
<input type="text" name="nol" maxlength="50" size="30">
</td>
</tr>
<tr>
<td>
<form method="post" id="submit" action="script/gen.php">
<input type="button" onClick="getKey()"; value="Generate key"/>
</td>
</tr>
<div id="innhold">
<h4>Licence Key: </h>
</div>
<tr>
<td colspan="2" style="text-align:center">
<input type="submit" value="Submit">
</td>
</tr>
</table>
</form>
The codelines of interest is:
感兴趣的代码行是：
<input type="text" name="nol" maxlength="50" size="30">
and
和
<input type="text" name="customer" maxlength="50" size="30">
I try to write this information to a database like this:
我尝试将此信息写入这样的数据库：
function postData($key1) {
//just to check if the key is equal to the one thats posted to the user
//echo '<h5>From postData' . $key1 . '</h5>';
/*echo '<script type="text/javascript"> alert("The order has been submitted successfully");
location = "/Webpanel/index.html";
</script>';*/
$customerVar = $POST['customer'];
$nolVar = $POST['nol'];
mysql_connect("localhost","root","") or die(mysql_error());
mysql_select_db("licencedatabase");
$query_add = "INSERT INTO licence (`customer_name`,`licence_count`) VALUES ('$customerVar','$nolVar')";
$query_exec = mysql_query($query_add) or die(mysql_error());
mysql_close();
}
But I keep getting the error:
但我不断收到错误消息：
Undefined variable: POST
How can I accomplish this? Thanks in advance.
我怎样才能做到这一点？提前致谢。
回答by abhshkdz
回答by Shahzeb
Try using $_POSTinstead of $POST
尝试使用$_POST代替$POST
回答by deceze
That's because it's called $_POST.
那是因为它被称为$_POST.
回答by Gntem
to access the superglobal POST use $_POSTnot $POST
访问超全局 POST 使用$_POST不$POST
回答by Edd Slipszenko
All PHP superglobals (such as those for GET and POST) are prefixed with an underscore, so: $POSTshould be $_POST.
所有 PHP 超全局变量（例如 GET 和 POST 的那些）都以下划线为前缀，因此：$POST应该是$_POST.
Have a look here for more information about the available superglobals in PHP: http://php.net/manual/en/language.variables.superglobals.php
在此处查看有关 PHP 中可用超全局变量的更多信息：http: //php.net/manual/en/language.variables.superglobals.php
回答by Edd Slipszenko
Try using $_POSTinstead of $POST
尝试使用$_POST代替$POST
Check following example:
检查以下示例：
The predefined $_POSTvariable is used to collect values from a form sent with method="post".
预定义$_POST变量用于从发送的表单中收集值method="post"。
Information sent from a form with the POST method is invisible to others and has no limits on the amount of information to send.
使用 POST 方法从表单发送的信息对其他人是不可见的，并且对要发送的信息量没有限制。
Example:
例子：
<form action="submitform.php" method="post">
Name: <input type="text" name="fname" />
Age: <input type="text" name="age" />
<input type="submit" />
</form>
When the user clicks the "Submit"button, the URL will look like this: http://localhost/submitform.php
当用户单击"Submit"按钮时，URL 将如下所示：http://localhost/submitform.php
The "submitform.php"file can now use the $_POSTvariable to collect form data (the names of the form fields will automatically be the keys in the $_POSTarray):
该"submitform.php"文件现在可以使用该$_POST变量来收集表单数据（表单字段的名称将自动成为$_POST数组中的键）：
Welcome <?php echo $_POST["fname"]; ?>!<br />
You are <?php echo $_POST["age"]; ?> years old.
might you will understand clearly.
或许你会明白。
