PART 2:    • User registration and email verificat...  
In this video, we build a system where users can register by providing their username, email, and password. This stores their information in a MySQL database and logs them in automatically. But their account will not have the full functionalities until their have activated their account by clicking on the email verification link that our system is going to email to them.

This system uses PREPARED STATEMENTS to make queries with the database which makes the system secure from SQL injection attacks.

We also implement validation with error messages display. There is also duplicate email validation which means that if a user attempts to create an account with an email that has already been used before on our system, the system will display the error message "Email already exists".

That's the summary of the video. I hope you enjoy it.