php rto quiz problem

Question

my project is rto database management system in this i am using php and mysqli and in project i create a php rto quiz ana i want limitations on this listed below.

1.one user give one test only in one week?

2.and a user give test two time in month when he/she fail in it 

link of project given below 

http://rohitims.ml/RTO/php/loginerror.php

username - mohit.

pasword - mohit. 

plz help