对xampp MySQL的INSERT查询不起作用

Question

这个php插入查询在MYSQL xampp中不起作用。我找不到任何错误

QUERY：

$query = "INSERT INTO member (id, username,fname,lname,email, password, salt )
VALUES ( '$username', '$password', '$email', '$salt' )";

Answer 1

你缺少$ fname，查询中的$ lname如果自动增加，也会使用NULL作为id

$query = "INSERT INTO member (id, username,fname,lname,email, password, salt )
VALUES (NULL, '$username', '$fname', '$lname', '$password', '$email', '$salt' )";

Answer 2

您传递的列名称数量错误。您的正确查询应如下所示：

$query = "INSERT INTO member (username,password,email,salt )
VALUES ( '$username', '$password', '$email', '$salt' )";

Answer 3

您没有向查询中指定的所有列插入值。

在您的查询中

$query = "INSERT INTO member (id, username,fname,lname,email, password, salt )
VALUES ( '$username', '$password', '$email', '$salt' )";

您指定了7列且只有4个值。因此，可以添加更多值或删除查询中指定的不必要的列，如

$query = "INSERT INTO member (username, password,email, salt )
VALUES ( '$username', '$password', '$email', '$salt' )";

OR

$query = "INSERT INTO member (id, username,fname,lname,email, password, salt )
VALUES ('$id', '$username','$fname','$lname','$email', '$password', '$salt' )";