Gmail SMTP Tutorial

Creating a Login Form with OTP Verification through Email in PHP Tutorial

In this tutorial, I will show how to create a simple 2 Factor Authentication when logging in using PHP Language. This will help you to create a more secure authentication for your system users in your current or future PHP Projects. The system will generate an OTP or the One-Time-PIN every time the users attempt to login into the system. Here, the OTP will be through an email using GMail SMTP.

The application that we'll be crating in this tutorial has simple functionalities such registration, login, verification, home page, and logout. I hope this will help you.