Introduction Adding a Google login to your PHP website can enhance both user experience and security by allowing users to authenticate with their existing Google accounts. Instead of creating a separate registration system, you can integrate Google's OAuth 2.0 authentication, which is widely trusted and easy to implement. In this guide, we’ll walk you through each step—from creating a project in Google Cloud Console to writing PHP code that handles Google sign-in and displays user information. Whether you're a beginner or an experienced developer, this tutorial will help you build a fully functional Google login system in PHP using the Google API Client. Step 1: Create a Project on Google Cloud Console 1. First, go to this https://console.cloud.google.com/welcome . 2. Click on the "Select a Project" button that open a pop window. 3. Click on the "New Project" to open the project creation window. 4. Enter a project name and select an organization. 5. Click...