The logic behind signing up users
The logic behind logging in users
The user signup form validation-back-end
Check if the user is registered and redirect to login page
Saving the user details into the database using php
Retrieving the user details from the database
Comparing passwords from the database and password entered by the user and if correct login the user.
Redirecting the user to another page on successful login.
Connecting the login form with the database
SQL Queries
Creating a MySQL database.