Google oAuth API provides an easy and powerful way to integrate login system on the website. The web developers can implement login and registration system in the web application using Google OAuth 2.0. Google login system helps to increase subscribers on your website. Because nowadays almost all users have a Google account and they can log in with their Google account without registration on your website. In this tutorial, we’ll show you simple login system integration process with Google authentication using Google API PHP library . Here we’ll provide the step-by-step guide to implementing login with Google account using PHP and store the user information to the MySQL database. Using our Google login script you can easily implement Login with Google using PHP at your website. Before you begin to integrate Login with Google using PHP and MySQL, take a look at the folders and files structure. index.php gpConfig.php User.php logout.php src/ Google API, Google Client, Google O...