php - 注意第 10 行 : Undefined index: enroll in G:\xampp\htdocs\tg\1stSubmit. php

Question

这个问题已经有答案了:

"Notice: Undefined variable", "Notice: Undefined index", "Warning: Undefined array key", and "Notice: Undefined offset" using PHP (29 个回答)

已关闭 9 年前。

当我在mysql中插入数据时，会产生这个错误。

Notice: Undefined index: enroll in G:\xampp\htdocs\tg\1stSubmit.php on line 10

enroll是在 <input type="text" name="enroll"> 中定义的并在提交页面声明:

$a =  $POST['enroll'];
$sql="INSERT INTO student (e_no,f_name) VALUES ('$a','$b')";

Answer 1

使用

$a = $_POST['enroll'];

而不是

$a = $POST['enroll'];