Excuse me, if you add the interface to the administrator, the modification to the background database has been implemented, and the data in the administrator table can also be added to the database. However, the password written to the database cannot be encrypted by MD5. How can I add it to the html interface? Implement Md5 encryption? And when the administrator added in the front desk logs in, it is still reminded that there is no such user. What to do about this?