PHP插入错误没有解释

Question

im farely new to php coding. I have been using web pages to assist me in learning. But right now im stuck.

Im trying to insert a record into a table but im unable. the php just produces the message "error:" but gives no further info. any assistance would be great.

P.S the conenction to the table is working fine, already checked i am able to read data, and obviously the username and password are for read and write rights...

  $sql="INSERT INTO users (email, username, password, full_name, company_name, active, active_until, start_date, remote_backup, local_backup)
VALUES
('".$register_email_address."','".$register_username."','".$register_password."','".$register_fullname."','".$register_company_name."','".$active."','".$active_until."','".$start_date."','".$remote_backup."','".$local_backup."'";
if (!mysqli_query($sql,$con))
  {
  die('Error: ' . mysqli_error());
  }
echo "1 record added";

Answer 1

if (!mysqli_query($sql,$con))

The mysqli_query function takes the connection as the first argument, not the second. You'll need to switch the order of the arguments. You should also modify your php.ini file to enable error reporting + display errors - it'll tell you about this sort of thing.