小编1n9*_*7om的帖子

我真的不了解Random.Next(minValue,maxValue).这总是给我"1":

rnd.Next(1,2)

但是,这似乎创建了1或2:

rnd.Next(1,3)

但是,由于第二个参数被称为"maxValue",它是否也应该包含在Random.Next()的可能结果中？

我从mySQL收到此错误消息:

You have an error in your SQL syntax; check the manual that corresponds to your 
MySQL server version for the right syntax to use near 'key,time) 
VALUES ('FreeTest','86400')' at line 2

这是代码:

if ((isset($_POST['key'])) && (isset($_POST['days']))) {

  $key = mysql_escape_string($_POST['key']);
  $days = mysql_escape_string($_POST['days'] * 86400);

  $add = "INSERT INTO licence
  (key,time)
  VALUES
  ('$key','$days')";

  $addkey = mysql_query($add);
}