I am developing a shift allocation app for part time shift workers. But having problems in conecting

[hassan naveed]

I developed an app for part time workers which has a login screen. The passwords and user name are stored in a file on local host server and available shift are stored in other file on server. So what i basically did was when user enters a password or username it reads the password php file and if login is correct it takes you to other screen and at another screen there is a button which when clicked it reads another file which is available shifts file and displays. But i have a problem they are not connected to each othe like i want to display different dhifts for different workers, so if person a sing in it gets different shifts as compared to person b.plese help?