php - PHP不会向mysql发送数据！？（未定义的变量错误）

Question

我有一些从 adobe flash AS3 接收的数据，PHP 文件接收到它，但我似乎无法将数据发送到 mySQL...

这是我的PHP代码：

<?php

if(isset($_POST['userFirstName'])){ $userFirstName = $_POST['userFirstName']; }
if(isset($_POST['userLastName'])){ $userLastName = $_POST['userLastName']; }
if(isset($_POST['userEmail'])){ $userEmail = $_POST['userEmail']; }
if(isset($_POST['userNumber'])){ $userNumber = $_POST['userNumber']; }
if(isset($_POST['userMsg'])){ $userMsg = $_POST['userMsg']; }

$username="******";
$password="*******";
$database="b-elite-fitness";

mysql_connect("localhost","$username","$password") or die (mysql_error());
mysql_select_db("$database") or die (mysql_error());

mysql_query("INSERT INTO formdp 
(ID ,firstname, lastname, email, number, message) 
VALUES('','$userFirstName[firstname]','$userLastName[lastname]','$userEmail[email]','$userNumber[number]','$userMsg[message]')")
or die (mysql_error());
echo "foo=bar&checking=ok";
mysql_close();
?>

我得到这个php文件的错误......

( ! ) Notice: Undefined variable: userFirstName in C:\wamp\www\NewtestForm\form.php on line 18 Call Stack
#   Time    Memory  Function    Location 1  
0.0094  253176  {main}( )   ..\form.php:0

( ! ) Notice: Undefined variable: userLastName in C:\wamp\www\NewtestForm\form.php on line 18 Call Stack
#   Time    Memory  Function    Location 1  
0.0094  253176  {main}( )   ..\form.php:0

( ! ) Notice: Undefined variable: userEmail in C:\wamp\www\NewtestForm\form.php on line 18 Call Stack
#   Time    Memory  Function    Location 1  
0.0094  253176  {main}( )   ..\form.php:0

( ! ) Notice: Undefined variable: userNumber in C:\wamp\www\NewtestForm\form.php on line 18 Call Stack
#   Time    Memory  Function    Location 1  
0.0094  253176  {main}( )   ..\form.php:0

( ! ) Notice: Undefined variable: userMsg in C:\wamp\www\NewtestForm\form.php on line 18 Call Stack
#   Time    Memory  Function    Location 1  
0.0094  253176  {main}( )   ..\form.php:0

谁能帮帮我这几天我一直在解决这个问题......

我是 PHP 新手，所以也可以解释一下...

编辑更新....我更改了编码，但是仍然遇到相同的错误...这是我的新编码...。

<?php

if(isset($_POST['userFirstName'])){ $userFirstName = $_POST['userFirstName']; }
if(isset($_POST['userLastName'])){ $userLastName = $_POST['userLastName']; }
if(isset($_POST['userEmail'])){ $userEmail = $_POST['userEmail']; }
if(isset($_POST['userNumber'])){ $userNumber = $_POST['userNumber']; }
if(isset($_POST['userMsg'])){ $userMsg = $_POST['userMsg']; }

$username="root";
$password="dp10aap";
$database="b-elite-fitness";

mysql_connect("localhost","$username","$password") or die (mysql_error());
mysql_select_db("$database") or die (mysql_error());

mysql_query("INSERT INTO formdp 
    (id ,firstname, lastname, email, number, message) 
    VALUES('NULL','$userFirstName','$userLastName','$userEmail','$userNumber','$userMsg')") 
or die (mysql_error());
mysql_close();
?>

这是我的错误...

( ! ) 注意：未定义的变量：C:\wamp\www\NewtestForm\form.php 中的 userFirstName 第 18 行调用堆栈

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