神农架2日游:用户注册问题，急！！！

问一下，我做的会员注册页，填完信息注册出现下面问题，请问为什么呀？

注册成功！
下面是你的注册资料:
用户名：
Notice: Use of undefined constant ID - assumed 'ID' in C:\Inetpub\wwwroot\bysj\regok.php on line 27

真实姓名：
Notice: Use of undefined constant name - assumed 'name' in C:\Inetpub\wwwroot\bysj\regok.php on line 32

性别：
Notice: Use of undefined constant sex - assumed 'sex' in C:\Inetpub\wwwroot\bysj\regok.php on line 37

种类：
Notice: Use of undefined constant kind - assumed 'kind' in C:\Inetpub\wwwroot\bysj\regok.php on line 42

部门：
Notice: Use of undefined constant DP - assumed 'DP' in C:\Inetpub\wwwroot\bysj\regok.php on line 47

Email：
Notice: Use of undefined constant email - assumed 'email' in C:\Inetpub\wwwroot\bysj\regok.php on line 52

城市：
Notice: Use of undefined constant city - assumed 'city' in C:\Inetpub\wwwroot\bysj\regok.php on line 57

电话：
Notice: Use of undefined constant tel - assumed 'tel' in C:\Inetpub\wwwroot\bysj\regok.php on line 65

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